The FLASH HDF5 structure

1

== Contents ==

2

== General information about HDF5 and how to look at it ==

9

10

HDF5 is a data format maintained by the HDF group. For detailed general information see [[here>>url:https://portal.hdfgroup.org/display/support||shape="rect"]]

11

12

The easiest way to look at the HDF5 files from your beamtime is to use the **Jupyter notebook** interface to Maxwell: [[https:~~/~~/max-jhub.desy.de/>>https://max-jhub.desy.de/]]

13

14

The file content can be browsed by double clicking on the file.

15

16

Typically the Jupyter notebook starts at your home directory and you have to create a (soft) link to your beamtime folder: open a terminal window (File->New-> Terminal) and create the link via :

17

18

{{code language="none"}}> ln -sn beamtime path linkname

19

e.g.

20

> ln -sn /asap3/flash/gpfs/fl23/2025/data/11024321/ ~/beamtime_11024321 {{/code}}

21

Then a “beamtime_11024321” folder should appear in your home directory.

22

23

[[image:https://mail.desy.de/service/home/~~/?auth=co&loc=de&id=400586&part=2||height="219" width="500"]]

24

25

26

Alternativaly you can also use a conventional **HDF viewer:**

27

28

To download the HDF5 Viewer click [[here>>url:https://portal.hdfgroup.org/display/support/Download+HDFView||shape="rect"]]

29

30

For use on the DESY Maxwell or PAL (max-fsc or pal) **hdfview** is available in the xray module :

31

{{code language="none"}}> module load xray{{/code}}

32

{{code language="none"}}> hdfview{{/code}}

or you can use

> silx view

[[Contents>>doc:||anchor="Contents"]]

42

43

== The FLASH HDF5 format ==

44

45

FLASH provides a conversion of its data acquisition (DAQ) to the commonly used [[HDF5>>url:https://www.hdfgroup.org/solutions/hdf5/||shape="rect"]] format. Correlated data are mapped by a primary index called **train ID**. Every data set has an individual index of train IDs to identify the data even when data are missing or deviate in update rate. If the data set of choice contains gaps, users have to decide how to treat missing values. DAQ channels are spread across various files with one file name pattern for each DAQ. This means users have to assemble data from different files if necessary.

46

47

The hierarchy is realized using a human readable named HDF tree with each DAQ channel containing the data sets "//value//" and "//index//". Additionally, the HDF group //zraw// contains a tree of the original DAQ channel names.

48

49

Reference implementation, which follows the concept of Python libraries like Pandas, Xarray, or Dask, is given below.

50

51

52

=== Comparison to FLASH's deprecated HDF formats ===

53

54

Before 2021, FLASH provided two different HDF formats formally known as //near-online// and //offline// HDF files.

55

56

All data sets were aligned by the same global index by filling in missing data. Fast DAQ channels (pulse synchronous data - update 10 Hz) are filled in by NaN or 0, slow channels (not pulse synchronous data - update e.g. 1 Hz ) are interpolated by the DAQs libraries, by keeping the value constant up to the next change.

57

58

While the near-online HDF files were converted live during the beamtime, the offline HDF files were manually compiled weeks/months later. Near-online HDF files were used by a provided API [[BeamtimeDaqAccess>>url:https://confluence.desy.de/display/FLASHUSER/Near-Online+data+analysis#Near-Onlinedataanalysis-BriefUserGuidetoBeamtimeDAQAccess||shape="rect"]], which also searches for DAQ channels in files. With assembled files "by run", all DAQ channels were existing in the same HDF file. While shorter runs usually fitted into one file, longer runs still had to be aggregated over several files. The creation of the assembled type of files still involves the use of fairly unstable DAQ Mex-functions As the environment required for using the Mex-functions is already deprecated, its continued existence is uncertain.

59

60

The HDF hierarchy is almost identical in all formats. While in the the recent format each DAQ channel contains the data sets "value" and "index", the deprecated format had one data set for each DAQ channel. The deprecated formats supplies no time axis parameters for spectra data types.

61

62

63

**HDF5 example files (old format)**

64

65

Here we have a few HDF5 samples (User data combined with Photon diagnostics data) from a few beamtimes showing the different kind options.

66

67

[[image:attach:image2019-10-21_17-2-50.png||thumbnail="true" width="300"]] [[download HDF5 (Images @ FL2)>>url:https://desycloud.desy.de/index.php/s/nyEgeCWJFC4gao2||shape="rect"]]

68

69

70

[[~[~[image:attach:image2019-10-22_10-52-27.png~|~|thumbnail="true" width="300"~]~]download HDF5 (GHz ADC and OPIS @ FL2)>>url:https://desycloud.desy.de/index.php/s/AeA2kPNNnZgX95A||shape="rect"]]

=== HDF examples: ===

77

78

* ADC data as example for **fast** **data** (10 Hz):

79

80

[[image:attach:image2020-11-16_15-26-28.png||height="250"]]

81

82

* The //average// FEL pulse energy as example for the **slow** **data**. Here the data is not saved with 10 Hz - thus not for every FEL pulse train. The data is typically saved with 1 Hz if the values are changing (like the FEL energy) and every about 20 sec if there is no change for longer time ( e.g. motor set values). Thus to use the data together with the "fast" one, one has to interpolate the data as explained in the examples in the repos below show (e.g. {{code language="none"}}df['GMD_T_average'] = df['GMD_T_average'].interpolate(method='linear'){{/code}})

83

84

( as example only every 10th train ID is listed in the HDF group "index")

85

86

[[image:attach:image2020-11-16_15-31-45.png||height="250"]]

87

88

* (((

89

//zraw// group contains the **original DAQ (DOOCS) names**

90

)))

91

92

of the properties saved in the DESY internal raw format. (For experts)

93

94

95

[[image:attach:image2020-11-16_16-26-3.png||height="400"]]

96

97

98

=== There are different options that help you to work with the FLASH HDF5 data in Python ===

99

100

* The currently developed option for large data sets: [[the FAB package>>url:https://hasfcpkg.desy.de/fab/fab.html||shape="rect"]] ... see below

101

* and for smaller projects: (% class="Object" %)[[https:~~/~~/gitlab.desy.de/christopher.passow/flash-daq-hdf>>url:https://gitlab.desy.de/christopher.passow/flash-daq-hdf||shape="rect"]]

102

103

(% class="Object" %)See also the collection of Demo data and sample scripts : [[Collection of HDF5 sample data from different beamlines>>doc:FLASHUSER.Offline data analysis (DAQ).Collection of HDF5 sample data from different beamlines.WebHome]] and [[DEMO - Working with FLASH data>>doc:FLASHUSER.Offline data analysis (DAQ).DEMO - Working with FLASH data.WebHome]]

== Complete list of recordable parameters ==

109

110

The complete list for the relation between DOOCS names and HDF5 names for the recordable parameters can be found in [[DESY's Repository>>url:https://stash.desy.de/projects/CS/repos/pah/browse/src/camp/data/channel2HdfName.dat||shape="rect"]].

111

112

== Most popular FLASH parameters and their names in HDF5, DOOCS and (.raw) DAQ ==

=== FLASH1 ===

In the Shutdown 2024 / 2025 the complete photon diagnostic and experiment control was renewed and thus the Doocs names and also some HDF5 names had to be changed. The new naming will be documented here as soon as the systems are online again.

121

122

The previously used naming scheme (2024 and before) can be found here:

123

124

{{expand expanded="false" title="FLASH1 naming scheme used until 2024"}}

125

==== (% id="cke_bm_8853497S" style="display:none" %) (%%)Beamline info (FLASH1) ====

126

127

{{code language="none"}}/FL1/Beamlines/Attenuator/pressure{{/code}}

128

//always saved (PBD)//

129

DOOCS prop : {{code language="none"}}FLASH.FEL/GAS_DOSING/FL1.ATTENUATOR/PRESSURE{{/code}}

130

DAQ channel: {{code language="none"}}FLASH.FEL/GAS_DOSING/FL1.ATTENUATOR/PRESSURE{{/code}}

131

desc: set pressure in the gas attenuator

132

units: mbar

133

134

{{code language="none"}}/FL1/Beamlines/BL/Fast shutter/open{{/code}}

135

//always saved (PBD)//

136

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/BL.SHUTTER/CH00.TD{{/code}}

137

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/BL.SHUTTER{{/code}}

138

desc: BL Beamline Fast shutter state: 1 is open, 0 is closed ( for technical reasons there are 100 vales of this state saved ...)

139

units: none

140

141

{{code language="none"}}/FL1/Beamlines/PG/Fast shutter/open{{/code}}

142

//always saved (PBD)//

143

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/PG.SHUTTER/CH00.TD{{/code}}

144

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/PG.SHUTTER{{/code}}

145

desc: PG Beamline Fast shutter state: 1 is open, 0 is closed ( for technical reasons there are 100 vales of this state saved ...)

146

units: none

147

148

{{code language="none"}}/FL1/Beamlines/BL/Filters/BL filter wheel/position filter 1{{/code}}

149

//always saved (PBD)//

150

DOOCS prop : {{code language="none"}}TTF2.FEL/BLFILTERS1/FILTER1/FW.MOTOR.POS{{/code}}

151

DAQ channel: {{code language="none"}}TTF2.FEL/BLFILTERS1/FILTER1/FW.MOTOR.POS{{/code}}

152

desc: Position of the BL filter wheel 1 - to correlate with the filter material please look [[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

153

units: degree

154

155

{{code language="none"}}/FL1/Beamlines/BL/Filters/BL filter wheel/position filter 2{{/code}}

156

//always saved (PBD)//

157

DOOCS prop : {{code language="none"}}TTF2.FEL/BLFILTERS2/FILTER2/FW.MOTOR.POS{{/code}}

158

DAQ channel: {{code language="none"}}TTF2.FEL/BLFILTERS2/FILTER2/FW.MOTOR.POS{{/code}}

159

desc: Position of the BL filter wheel 2 - to correlate with the filter material please look [[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

160

units: degree

161

162

{{code language="none"}}/FL1/Beamlines/PG/Filters/position filter 1{{/code}}

163

//always saved (PBD)//

164

DOOCS prop : = TTF2.FEL/BDAF1/BDA.F1/FW.MOTOR.POS=

165

DAQ channel: {{code language="none"}}TTF2.FEL/BDAF1/BDA.F1/FW.MOTOR.POS{{/code}}

166

desc: Position of the PG filter wheel 1

167

units: degree

168

169

{{code language="none"}}/FL1/Beamlines/PG/Filters/position filter 2{{/code}}

170

//always saved (PBD)//

171

DOOCS prop : {{code language="none"}}TTF2.FEL/BDAF2/BDA.F2/FW.MOTOR.POS{{/code}}

172

DAQ channel: {{code language="none"}}TTF2.FEL/BDAF2/BDA.F2/FW.MOTOR.POS{{/code}}

173

desc: Position of the PG filter wheel 2

174

units: degree

175

176

{{code language="none"}}/FL1/Beamlines/PG/Filters/position filter 3{{/code}}

177

//always saved (PBD)//

178

DOOCS prop : {{code language="none"}}TTF2.FEL/PGFILTERS/PGFILTERS/FW.MOTOR.POS{{/code}}

179

DAQ channel: {{code language="none"}}TTF2.FEL/PGFILTERS/PGFILTERS/FW.MOTOR.POS{{/code}}

180

desc: Position of the PG filter wheel 3

units: degree

NOTE: Aperture positions in the beamline as well as the positions of the beam steering mirrors are also saved. For more Info contact your local contact

186

187

[[Contents>>doc:||anchor="Contents"]]

188

189

190

==== Photon Diagnostics SASE ([[GMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]]) ====

191

192

193

(% style="color:#000000" %)**Discontinued GMD data recording / evaluation (VME + PhotonFlux ML server)**

194

195

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}

196

//always saved (PBD)//

197

198

(% style="color:#000000" %)DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT04/VAL{{/code}} (%%)

199

(% style="color:#000000" %)DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENPULSEIC{{/code}}(%%)

200

desc : calibrated average SASE Energy/pulse measured in the TUNNEL upstream the gas attenuator (ion current)

201

units : microJ

202

203

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}

204

//always saved (PBD)//

205

206

DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT34/VAL{{/code}}

207

DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENERGYPULSE.USER{{/code}}

208

desc :Energy per pulse Tunnel (from e-) - the values are set to "0" if there was no SASE beam in the FEL

209

units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision) **[[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

210

211

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel (raw){{/code}}

212

//always saved (PBD)//

213

DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT14/VAL{{/code}}

214

DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENERGYPULSE.FF{{/code}}

215

desc :Energy per pulse Tunnel (from e-) - uncorrected values. There are also values saved if there was no beam ... just background noise

216

units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision) **[[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

217

218

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy BDA{{/code}}

219

//always saved (PBD)//

220

221

DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT05/VAL{{/code}}

222

DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENPULSEIC{{/code}}

223

desc : calibrated average SASE Energy/pulse measured in the BDA (in the experimental hall) after the attenuator (ion current)

224

units : microJ

225

226

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy BDA{{/code}}

227

//always saved (PBD)//

228

229

DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT35/VAL{{/code}}

230

DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENERGYPULSE.USER{{/code}}

231

desc :Energy per pulse BDA (from e-) - the values are set to "0" if there was no SASE beam in the FEL

232

units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision) **[[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

233

234

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy BDA (raw){{/code}}

235

//always saved (PBD)//

236

DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT15/VAL{{/code}}

237

DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENERGYPULSE.FF{{/code}}

238

desc :Energy per pulse BDA (from e-) - uncorrected values. There are also values saved if there was no beam ... just background noise

239

units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

(% style="color:#000000; letter-spacing:0px" %)**NEW (since 2021) GMD data recording / evaluation (same format as FLASH2 and XFEL)**

244

245

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}

246

//always saved (PBD)//

247

(% style="color:#000000" %)DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}} (%%)

248

(% style="color:#000000" %)DAQ channel: {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}}

249

250

desc : calibrated average SASE Energy/pulse measured in the TUNNEL upstream the gas attenuator

units : microJ

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}

255

//always saved (PBD)//

256

257

(% style="color:#000000" %)DOOCS prop : (%%)

258

(% style="color:#000000" %){{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL1.TUNNEL/INTENSITY.TD{{/code}}DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL1.TUNNEL/INTENSITY.TD{{/code}}

259

260

desc : Energy per pulse measured in the Tunnel. In addition measurement errors and beam position are included for EACH pulse in the pulse train !! (see below)

261

units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

262

263

264

For every pulse in the pulse train the information is saved:

265

266

1. **Intensity per pulse** (a.u. (more or less µJ ))

267

1. Intensity per pulse (auxillary GMD) - not used

268

1. Position horizontal (mm, for a single pulse the position information may be very noisy - talk to your local contact)

269

1. Position vertical (mm, for a single pulse the position information may be very noisy - talk to your local contact)

270

1. **Intensity per pulse sigma** (a.u. (more or less µJ ), (% style="color:#000000" %)This parameter gives an indication of the error of the measurement of the pulse energy. This takes signal to noise, detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%))

271

1. Position horizontal sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

272

1. Position vertical sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

273

1. Combined warning and error flags

274

275

The pulse energy and the error are plotted for the first bunch of the pulse trains saved in this

276

file

277

278

[[image:image2021-2-9_10-51-6.png]]

All values for the GMD are also available for the** BDA GMD **which is located in the experimental hall down stream the gas attenuator. If the attenuator is on the ratio between BDA and Tunnel signal shows the attenuation. **BUT NOTE** that the filter units are downstream the GMD. So if filters are used this influence is NOT measured by the GMD BDA !

284

285

286

Besides pulse energy the GMD also provides information about the beam position

287

288

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position BDA horizontal{{/code}}

289

//always saved (PBD)//

290

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IX.POS{{/code}}

291

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IX.POS{{/code}}

292

desc :Beam position of the photon Beam determined by the GMD (BDA, x=horizontal)

293

units : mm

294

295

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position BDA vertical{{/code}}

296

//always saved (PBD)//

297

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IY.POS{{/code}}

298

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IY.POS{{/code}}

299

desc :Beam position of the photon Beam determined by the GMD (BDA, y=vertical)

300

units : mm

301

302

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position tunnel horizontal{{/code}}

303

//always saved (PBD)//

304

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IX.POS{{/code}}

305

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IX.POS{{/code}}

306

desc :Beam position of the photon Beam determined by the GMD (TUNNEL, x=horizontal)

307

units : mm

308

309

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position tunnel vertical{{/code}}

310

//always saved (PBD)//

311

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IY.POS{{/code}}

312

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IY.POS{{/code}}

313

desc :Beam position of the photon Beam determined by the GMD (TUNNEL, y=vertical)

units : mm

==== Spectrometer (FLASH1) ====

318

319

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/Tunnelspectrometer/wavelength{{/code}}

320

_always saved (when Spectrum is measured !!) (PBD) _

321

DOOCS prop : {{code language="none"}}TTF2.EXP/PHOTONWL.ML/WAVE_LENGTH/VAL.TD{{/code}}

322

DAQ channel: {{code language="none"}}PBD.PHOTONWL.ML/WAVE_LENGTH{{/code}}

323

desc : XUV Spectrum measured with the "tunnel spectrometer"

324

units :

325

326

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/Tunnelspectrometer/wavelength start value{{/code}}

327

_always saved (when Spectrum is measured !!) (PBD) _

328

DOOCS prop : {{code language="none"}}TTF2.EXP/PBD.PHOTONWL.ML/BSTART/VAL{{/code}}

329

DAQ channel: {{code language="none"}}TTF2.EXP/PBD.PHOTONWL.ML/BSTART/VAL{{/code}}

330

desc : start value (in nm) for the wavelength axis of the XUV Spectrum measured with the "tunnel spectrometer"

331

units : nm

332

333

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/Tunnelspectrometer/wavelength increment{{/code}}

334

_always saved (when Spectrum is measured !!) (PBD) _

335

DOOCS prop : ==

336

DAQ channel: ==

337

desc : increment value (in nm) for each pixel for the wavelength axis of the XUV Spectrum measured with the "tunnel spectrometer"

338

units : nm

339

340

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon energy{{/code}}

341

//saved on DEMAND (PBD spectrometer stream)//

342

DOOCS prop : ==

343

DAQ channel: {{code language="none"}}PBD.PHOTONEN.ML/PHOTON_ENERGY{{/code}}

344

desc : XUV Spectrum in eV measured with the "PG2 spectrometer"

345

units :

346

347

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon energy start value{{/code}}

348

//saved on DEMAND (PBD spectrometer stream)//

349

DOOCS prop : ==

350

DAQ channel: ==

351

desc : start value (in eV) for the wavelength axis of the XUV Spectrum measured with the "PG2 spectrometer"

352

units : eV

353

354

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon energy increment{{/code}}

355

//saved on DEMAND (PBD spectrometer stream)//

356

DOOCS prop : ==

357

DAQ channel: ==

358

desc : increment value (in eV) for each pixel for the wavelength axis of the XUV Spectrum measured with the "PG spectrometer"

359

units : eV

360

361

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon wavelength{{/code}}

362

//saved on DEMAND (PBD spectrometer stream)//

363

DOOCS prop : ==

364

DAQ channel: {{code language="none"}}PHOTONEN.ML/PHOTON_WAVE_LEN{{/code}}

365

desc : XUV Spectrum in nm measured with the "PG2 spectrometer"

366

units :

367

368

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon wavelength increment{{/code}}

369

//saved on DEMAND (PBD spectrometer stream)//

370

DOOCS prop : ==

371

DAQ channel: ==

372

desc : start value (in nm) for the wavelength axis of the XUV Spectrum measured with the "PG2 spectrometer"

373

units : nm

374

375

{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon wavelength start value{{/code}}

376

//saved on DEMAND (PBD spectrometer stream)//

377

DOOCS prop : ==

378

DAQ channel: ==

379

desc : increment value (in nm) for each pixel for the wavelength axis of the XUV Spectrum measured with the "PG spectrometer"

380

units : nm

381

382

[[Contents>>doc:||anchor="Contents"]]

383

384

==== Electron Beam properties (FLASH1) ====

385

386

===== bunch charge =====

387

388

{{code language="none"}}/FL1/Electron Diagnostic/Bunch charge/after undulator{{/code}}

389

//always saved (PBD)//

390

DOOCS prop : {{code language="none"}}FLASH.DIAG/TOROID.ML/12EXP/CHARGE.FLASH1{{/code}}

391

DAQ channel: {{code language="none"}}FLASH.DIAG/TOROID/12EXP{{/code}}

392

desc: electron bunch charge (FLASH1)

units: nC

=====

arrival time (BAM) =====

397

398

399

* see: [[Info collection about the BAMs and how to use the BAM data>>doc:FS-FLASH USER tmp.jddd-linked help pages.Info collection for the BAM.WebHome||shape="rect"]]

400

* The data format of the BAM has been completely altered in the 2022 shutdown

401

* before 2022 BAMs were always saving the arrival time information for each 1µs bucked regardless if there were electrons in the accelerator or not. IN addition the arrival times for FL1 and FL2 were saved in the same parameter ...

402

* THIS is now different. There are new parameters saving only the arrival times for pulses that go to FL1 and to FL2 (in detail: first time slot of the accelerator and second)

403

* There has been also a renaming (and relocation) of the BAMs.

404

** acc: 4DBC3 → FL0.DBC2

405

** FL1: 1SFELC → FL1.SFELC

406

** FL2: FL2XTDS → (% style="color:#172b4d" %)FL2.SEED5

407

* for more Info: [[LINK to detailed infos from MSK>>doc:SDiag.How-to articles.BAM Data Structure.WebHome||shape="rect"]]

408

* [[Link a collection of papers related to the BAM and the analysis of pump-probe experiments>>doc:FS-FLASH USER tmp.Additional helpful things1.FLASH beamlines and instruments references.WebHome]]

409

* a recent [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]

(% style="color:#000000" %)**Discontinued BAM data recording **

414

415

{{code language="none"}}/FL1/Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}

416

//always saved (PBD)//

417

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}

418

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}

419

desc: Electron bunch arrival time measured with the BAM inside the accelerator - however shows a very good correlation to the arrivaltime of the XUV pulses in the experiment (pulse resolved data).

420

units: ps (bigger numbers indicate later arrivaltime of the electrons)

421

422

423

{{code language="none"}}/FL1/Electron Diagnostic/BAM/1SFELC/electron bunch arrival time (low charge){{/code}}

424

//always saved (PBD)//

425

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/1SFELC/LOW_CHARGE_ARRIVAL_TIME{{/code}}

426

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/1SFELC.LOW_CHARGE_ARRIVAL_TIME{{/code}}

427

desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020.

428

units: ps (bigger numbers indicate later arrival time of the electrons)

429

430

431

====== **BAM FL0.DBC2**{{code language="none"}}{{/code}} ======

432

433

(% style="color:#ff6600" %)**DBC2**/electron bunch arrival time (HDF5 name not yet implemented - see zraw)(%%)

434

//always saved (PBD)//

435

{{code language="none"}}/FL1/Electron Diagnostic/BAM/ {{/code}}DOOCS prop : FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA1.COMP

436

DAQ (% style="color:#000000" %)channel: FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA1.COMP (%%)

437

desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). The property contains only the arrival time of the bunches sent to FL1 (e.g. if there are 30 bunches in FL1 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not ). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

438

439

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

440

441

442

(% style="color:#ff6600" %)DBC2/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

443

//always saved (PBD)//

444

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE

445

DAQ channel: (% style="color:#000000" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE (%%)

446

desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 1 in the first part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

447

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

448

449

450

(% style="color:#ff6600" %)DBC2/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

451

//always saved (PBD)//

452

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color:#000000" %)E.bamError.1(%%)

453

DAQ channel: (% style="color:#000000" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMERROR.1(%%)

454

desc:(% style="letter-spacing:0.0px" %) status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

455

456

457

(% style="color:#ff6600" %)DBC2/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

458

//always saved (PBD)//

459

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color:#000000" %)E..bamStatus.//1//(%%)

460

DAQ channel(% style="color:#000000" %): FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS.1(%%)

461

desc: (% style="letter-spacing:0.0px" %) status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

462

463

464

====== **BAM FL1.SFELC**{{code language="none"}}{{/code}} ======

465

466

(% style="font-family:SFMono-Medium,~"SF Mono~",~"Segoe UI Mono~",~"Roboto Mono~",~"Ubuntu Mono~",Menlo,Courier,monospace; letter-spacing:0.0px" %)/FL1/Electron Diagnostic/BAM/**SFELC**(% style="color:#ff6600" %)/electron bunch arrival time (HDF5 name not yet implemented - see zraw)

467

468

//always saved (PBD)//

469

(% style="color:#172b4d" %)**FL1.SFELC**(%%)

470

(% style="color:#000000" %)channel: FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(% style="color:#000000" %)/ARRIVAL_TIME.ABSOLUTE.SA1.COMP(%%)

471

(% style="color:#000000" %){{code language="none"}} DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE.SA1.COMPDAQ {{/code}}(% style="letter-spacing:0.0px" %)desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020.. The property contains only the arrival time of the bunches sent to FL1 (e.g. if there are 30 bunches in FL1 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

472

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

(% style="color:#172b4d" %)SFELC(% style="color:#ff6600" %)/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

477

//always saved (PBD)//

478

DOOCS prop : FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(%%)/ARRIVAL_TIME.ABSOLUTE

479

DAQ channel:** **(% style="color:#000000" %)FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.ABSOLUTE (%%)

480

desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020. Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 1 in the first part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

481

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

482

483

484

(% style="color:#172b4d" %)SFELC(% style="color:#ff6600" %)/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

485

//always saved (PBD)//

486

DOOCS prop : FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(%%)/ARRIVAL_TIM(% style="color:#000000" %)E.bamError(%%)

487

DAQ channel(% style="color:#000000" %): FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.BAMERROR(%%)

488

desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!

489

490

491

(% style="color:#172b4d" %)SFELC(% style="color:#ff6600" %)/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

492

//always saved (PBD)//

493

DOOCS prop : FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(%%)/ARRIVAL_TIM(% style="color:#000000" %)E..bamStatus.//1//(%%)

494

DAQ chann(% style="color:#000000" %)el: FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.BAMSTATUS.1(%%)

495

desc: status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

===== electron beam profile =====

500

501

{{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/TDS profile{{/code}}

502

//always saved (PBD) - IF LOLA is ON and ACTIVATED in the PBD DAQ (talk to expert)//

503

DOOCS prop : {{code language="none"}}TTF2.DAQ/BEAM.PROF.ML/BEAM.PROF/OUT.PROF.CCCED{{/code}}

504

DAQ channel: {{code language="none"}}PBD.BEAM.PROF.ML/DAQ.OUT.PROF.CCCED{{/code}}

505

desc: temporal profile of electron bunch, y axis in Ampers (FLASH1)

506

units: pixel

507

508

{{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/Expert stuff/TDS calibration constant{{/code}}

509

//always saved (PBD) - IF LOLA is ON and ACTIVATED in the PBD DAQ (talk to expert)//

510

DOOCS prop : {{code language="none"}}TTF2.DAQ/BEAM.PROF.ML/BEAM.PROF/CALIB.CONST.T{{/code}}

511

DAQ channel: = PBD.BEAM.PROF.ML/CCT=

512

desc: TDS calibration constant for the x-axis of the profiles: fs per pixel

513

units: fs per pixel

514

515

{{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/TDS profile width rms{{/code}}

516

//always saved (PBD) - IF LOLA is ON and ACTIVATED in the PBD DAQ (talk to expert)//

517

DOOCS prop : {{code language="none"}}TTF2.DAQ/BEAM.PROF.ML/BEAM.PROF/SOWS.W.CCTED{{/code}}

518

DAQ channel: {{code language="none"}}PBD.BEAM.PROF.ML/PROFWIDTHCCTED{{/code}}

519

desc: rms pulse width of the measures TDS electron bunch profile

520

units: fs

521

522

===== electron bunch energy =====

523

524

{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/average electron energy{{/code}}

525

//always saved (PBD)//

526

DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/E_INTRA_MEAN/VAL{{/code}}

527

DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/E_MEAN{{/code}}

528

desc: electron bunch energy (average over the bunch train)

529

units: (% class="twikiNewLink" %)MeV

530

531

{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/pulse resolved energy{{/code}}

532

//always saved (PBD)//

533

DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/E_SPECT/VAL.TD{{/code}}

534

DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/E_SPECT{{/code}}

535

desc: electron bunch energy bunch resolved

536

units: (% class="twikiNewLink" %)MeV

537

538

539

{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/wavelength bunch train average{{/code}}

540

//always saved (PBD)//

541

DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/LAMBDA_MEAN/VAL{{/code}}

542

DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/LAMBDA_MEAN{{/code}}

543

desc: Wavelength calculated by the electron bunch energy (average over the bunch train) (FLASH1)

544

units: nm

545

546

[[Contents>>doc:||anchor="Contents"]]

==== ====

==== Timing information, rep rate etc. (FLASH1) ====

553

554

===== bunch repetition rate =====

555

556

{{code language="none"}}/Timing/repetition rate{{/code}}

557

//always saved (PBD)//

558

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.1{{/code}}

559

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.1{{/code}}

560

desc: repetition rate of the bunches / pulses within the burst (FLASH1)

561

units: kHz

562

563

===== set number of pulses =====

564

565

(% style="color:#ff6600" %)(HDF5 name not yet implemented - see zraw)(% style="color:#ff0000" %){{code language="none"}}/Timing/set number of bunches {{/code}}(%%)

566

//always saved (PBD)//

567

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1 [4th number]{{/code}}

568

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1 [4th number]{{/code}}

569

desc: Number of bunches set in the control (timing) system. The property contains 4 numbers. the last one is the number of pulses (see also [[doc:FLASH.Timing properties]] (internal link)). If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated and thus the actual number of pulses may be smaller than the set one

570

units:

571

572

===== actual number of pulses =====

573

574

{{code language="none"}}/FL1/Timing/actual number of bunches{{/code}}

575

//always saved (PBD)//

576

DOOCS prop : {{code language="none"}}FLASH.DIAG/TOROID.ML/12EXP/NUMBEROFBUNCHES.FLASH1{{/code}}

577

DAQ channel: {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP{{/code}}

578

desc: Number of bunches measured BEHIND the undulator. If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated this is the actual number that created XUV radiation.The number is calculated by the DAQ middle layer server, (FLASH1)

579

units:

580

581

===== actual pulse pattern recorded after the undulator =====

582

583

{{code language="none"}}/FL1/Timing/Bunch pattern/pattern after undulator{{/code}}

584

//always saved (PBD)//

585

DOOCS prop : {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP/CHARGE.TD{{/code}}

586

DAQ channel: {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP{{/code}}

587

desc: The bunch pattern as function of time in a burst recorded by toroid diagnostic BEHIND the undulator. (FLASH1)

units:

===== Train ID =====

{{code language="none"}}/Timing/train ID{{/code}}

593

//always saved (PBD)//

594

DOOCS prop : {{code language="none"}}none{{/code}}

595

DAQ channel: {{code language="none"}}none{{/code}}

596

desc: Each 10 Hz burst has its unique train ID. For the HDF5 data set the ID is the same for all parameters with the same index (note camera images may be shifted by 1 ID - talk to the experts !)

597

units:

598

599

===== (% style="color:#e67e22" %)Train time(%%) =====

600

601

(% style="color:#e67e22" %){{code language="none"}}/Timing/train time{{/code}}

602

desc:Local time as array of day, hour, minute, second, and centisecond. This data set is meant for visualization purposes only. For correlations use the train ID or the Unix time of the time stamp

603

units: d h min s cs

604

605

(% style="color:#e67e22" %){{code language="none"}}/Timing/time stamp{{/code}}

606

desc:first column: Local time in unix time. To get day, hour, minute, second you can use unix: e.g. date ~-~-date='@1553617729' or matlab, python etc

607

second column: microseconds

608

third column: Train ID of FLASH

609

610

currently it is saved as Unix time in : /zraw/FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1/dGroup/time

import time

# epoch time is found in /zraw/FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1/dGroup/time #!!! a leading 1 has to be added !!!

616

# The time and date of the start of the data taking in the HDF file is encoded in the filename - to roughly check the time

617

epoch_time = 1709051499.17 # Replace with your epoch time

618

619

formatted_time = time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(epoch_time))

620

print(formatted_time)

==== Pump Probe Laser (FLASH1) ====

627

628

**PIGLET (PG laser)**

629

630

**{{code language="none"}}/FL1/Experiment/Pump probe laser{{/code}}**

631

632

633

list of saved parameters status May 2024 (up to now the parameters can be found in /zraw/ ... )

Download the PDF:

/FL1/Experiment/Pump probe laser/laser attenuation

646

647

648

//always saved (PBD)//

649

DOOCS prop : {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/ROT2.CURRENT{{/code}}

650

DAQ channel: {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/ROT2.CURRENT{{/code}}

651

desc: attenuation of the PPLaser (rotation of a waveplate)

652

units : 0 no transmission , 1: full transmission

653

654

655

{{code language="none"}}/FL1/Experiment/Pump probe laser/laser delay{{/code}}

656

//always saved (PBD)//

657

DOOCS prop : {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/DLY1.CURRENT{{/code}}

658

DAQ channel: {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/DLY1.CURRENT{{/code}}

659

desc: delay of the Pump probe laser - measured by the read back position of the motor. only read out every secound ... better use the encoder

660

units : ps ( pos delay means IR comes later)

661

662

663

{{code language="none"}}/FL1/Experiment/Pump probe laser/delay line IK220.0/ENC.DELAY{{/code}}

664

//always saved (PBD)//

665

DOOCS prop : {{code language="none"}}TTF2.FEL/DELLINE.ENC/IK220.0/ENC.DELAY{{/code}}

666

DAQ channel: {{code language="none"}}TTF2.FEL/DELLINE.ENC/IK220.0:ENC.DELAY{{/code}}

667

subsystem: {{code language="none"}}DELLINE.ENC{{/code}} desc : delay of the Pump probe laser - measured by an encoder. The position is read out with 10Hz train synchronized and should be used to determine the actual laser delay (the motor position is only read out about every second

668

units : ps ( pos delay means IR comes later)

669

670

671

{{code language="none"}}/FL1/Experiment/Pump probe laser/Synchronization/timing jitter RMS GECCO{{/code}}

672

//always saved (PBD)//

673

DOOCS prop : {{code language="none"}}FLASH.SYNC/F1PPL.LASER_LOCK/28C.F1PPL1.CONTROLLER/ADV_CTRL_MANAGER.0.PID_INPUT_JITTER.2.RD{{/code}}

674

DAQ channel: {{code language="none"}}FLASH.SYNC/F1PPL.LASER_LOCK/28C.F1PPL1.CONTROLLER/ADV_CTRL_MANAGER.0.PID_INPUT_JITTER.2.RD{{/code}}

675

desc: rms jitter of the GECCO (% class="twikiNewLink" %)TiSa(%%) Oscillator units: fs

676

677

678

{{code language="none"}}/FL1/Experiment/Pump probe laser/streak camera delay time{{/code}}

679

//always saved (PBD)//

680

DOOCS prop : {{code language="none"}}TTF2.FEL/TDOLFEL/TDOLFEL/STREAK.CAM.TIME{{/code}}

681

DOOCS prop : {{code language="none"}}TTF2.FEL/TDOLFEL/TDOLFEL/STREAK.CAM.TIME{{/code}}

682

desc: delay time between the optical laser and the FEL units: ps

[[Contents>>doc:||anchor="Contents"]]

687

688

689

==== User Data (FLASH1) ====

690

691

The data saved specifically for detectors at an experiment will show up in /Experiment/ there is a large number of options for cameras or monitoring of slow properties (motor positions etc) for user experiments. For details please ask your local contact.

692

693

NOTE: If parameters for an experiment are included on short notice the correct naming in the HDF5 may not be in time and the data will show up in /uncategorized/ with the DOOCS names

694

695

The most common and permanently installed device used by experiment are our ADCs:

===== GHz ADCs =====

ADC traces of the (SPDevices 412) GHZ ADCs available for the users . More information about the ADCs can be found** [[here>>doc:FS-FLASH USER tmp.Data Acquisition and controls 1.Controls (DOOCS, jDDD,\.\.\.).MTCA ADCs.WebHome]]**

700

//saved on DEMAND in the user DAQ//

701

\\The HDF5 names for the ADC traces are depending on the beamline :

702

\\PG Beamline:

703

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH00/TD{{/code}}

704

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH01/TD{{/code}}

705

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH02/TD{{/code}}

706

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH03/TD{{/code}}

707

708

BL Beamlines:

709

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH00/TD{{/code}}

710

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH01/TD{{/code}}

711

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH02/TD{{/code}}

712

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH03/TD{{/code}}

713

\\{{code language="none"}}/FL1/Experiment/BL2/ADQ412 GHz ADC/CH00/TD{{/code}}

714

{{code language="none"}}/FL1/Experiment/BL2/ADQ412 GHz ADC/CH01/TD{{/code}}

715

\\{{code language="none"}}/FL1/Experiment/BL3/ADQ412 GHz ADC/CH02/TD{{/code}}

716

{{code language="none"}}/FL1/Experiment/BL3/ADQ412 GHz ADC/CH03/TD{{/code}}

717

718

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.ADQ.PG/EXP1.CH00/CH00.TD or CH00.DAQ.TD{{/code}}

719

here the {{code language="none"}}CH00.TD{{/code}} is the full ADC trace as it is sampled ( typically several 100.000 samples per pulse train) while the {{code language="none"}}CH00.DAQ.TD{{/code}} trace only has the number of samples which are sent to the DAQ OR if //grouping// is activated the {{code language="none"}}CH00.DAQ.TD{{/code}} contains only the grouped spectra. To read the ADC trace with an online analysis program the {{code language="none"}}CH00.DAQ.TD{{/code}} is used preferably.

720

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.ADQ.PG/EXP1.CH00{{/code}}

721

722

In addition there are also additional parameters saved like:

723

724

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

725

* {{code language="none"}}number of samples{{/code}}: total number of samples recorded for each 10 Hz trigger

726

* {{code language="none"}}error (ADC):{{/code}}0 indicates that there was no error

===== MHz ADCs =====

similar to the GHz ADCs the MHz ADCs are saved with HDF5 names like:

731

{{code language="none"}}/FL1/Experiment/BL1/SIS8300 100MHz ADC/CH2/TD{{/code}}

732

DOOCS prop : FLASH.FEL/ADC.SIS.BL1/EXP1.CH02/CH00.TD

733

DAQ channel: : FLASH.FEL/ADC.SIS.BL1/EXP1.CH02

734

735

In addition there are also additional parameters saved like:

736

737

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

738

* {{code language="none"}}number of samples{{/code}}: total number of samples recorded for each 10 Hz trigger

739

740

[[Contents>>doc:||anchor="Contents"]]

=== FLASH2 ===

There is analog to FLASH1 a permanently running "PhotonDagnostic DAQ FLASH2" (PBD2) and 2 User DAQs

747

748

==== Beamline info (FLASH2) ====

749

750

{{code language="none"}}/FL2/Beamlines/Attenuator/pressure {{/code}}

751

(% style="color:#000000" %)DOOCS prop : {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)

752

(% style="color:#000000" %)DAQ channel: {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)

753

(% style="color:#000000" %)desc: set pressure in the gas attenuator (%%)

754

(% style="color:#000000" %)units: mbar

755

756

{{code language="none"}}/FL2/Beamlines/FL20/Shutter/open{{/code}}

757

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.SIS.FL2FS/FL20.SHUTTER/CH00.TD{{/code}}

758

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.SIS.FL2FS/FL20.SHUTTER{{/code}}

759

desc: BL Beamline Fast shutter state: 1 is open, 0 is closed ( for technical reasons there are 100 vales of this state saved ...)

units: none

{{code language="none"}}/FL2/Beamlines/Filter wheel/position wheel 1{{/code}}

764

DOOCS prop : {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR1.MOT3/FPOS{{/code}}

765

DAQ channel: FLASH.FEL/FL20H.PH.MOTOR/MOTOR1.MOT3/FPOS

766

desc: Position of the BL filter wheel 1 - to correlate with the filter material please look **[[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]**

767

units: degree

768

769

/FL2/Beamlines/Filter wheel/position wheel 2

770

DOOCS prop : {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR2.MOT3/FPOS{{/code}}

771

DAQ channel: {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR2.MOT3/FPOS{{/code}}

772

desc: Position of the BL filter wheel 2 - to correlate with the filter material please look [[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

units: degree

NOTE: Aperture positions in the beamline as well as the positions of the beam steering mirrors are also saved. for more Info contact your local contact

777

778

[[Contents>>doc:||anchor="Contents"]]

==== Photon Diagnostics SASE ([[XGMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]] - FLASH2) ====

783

784

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}

785

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ{{/code}}

786

DAQ channel:{{code language="none"}} FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ{{/code}}

787

desc : calibrated average ( ~~ 20 sec averaging time ) SASE Energy/pulse measured in the TUNNEL before the attenuator (ion current)

units : microJ

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}

792

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}

793

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}

794

desc : Energy per pulse measured in the Tunnel (in front of the gas attenuator and the apertures in the Hall) In addition measurement errors and beam position are included for EACH pulse in the pulse train !! (see below)

795

units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

796

797

798

For every pulse in the pulse train the information is saved:

799

800

1. **Intensity per pulse** (a.u. (more or less µJ ))

801

1. Intensity per pulse (auxillary GMD) - not used

802

1. Position horizontal (mm, for a single pulse the position information may be very noisy - talk to your local contact)

803

1. Position vertical (mm, for a single pulse the position information may be very noisy - talk to your local contact)

804

1. **Intensity per pulse sigma** (a.u. (more or less µJ ), (% style="color:#000000" %)This parameter gives an indication of the error of the measurement of the pulse energy. This takes signal to noise, detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%))

805

1. Position horizontal sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

806

1. Position vertical sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

807

1. Combined warning and error flags

808

809

The pulse energy and the error are plotted for the first bunch of the pulse trains saved in this

file

[[image:attach:image2021-2-9_10-51-6.png||height="250"]]

All values for the GMD are also available for the** HALL GMD **which is located in the experimental hall down stream the gas attenuator. If the attenuator is on the ratio between Hall and Tunnel signal shows the attenuation. **BUT NOTE** that the filter unit and the Aperture 4 are downstream the GMD. So if filters and aperture are used this influence is NOT measured by the GMD hall !

820

821

822

Besides pulse energy the GMD also provides information about the beam position

823

824

825

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Average Beam position/position tunnel horizontal{{/code}}

826

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IX.POS{{/code}}

827

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IX.POS{{/code}}

828

desc : the Average ( ~~ 20 sec averaging time ) Beam position of the photon Beam determined by the GMD (tunnel, x=horizontal)

units : mm

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Average Beam position/position tunnel vertical{{/code}}

833

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IY.POS{{/code}}

834

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IY.POS{{/code}}

835

desc : the Average ( ~~ 20 sec averaging time ) Beam position of the photon Beam determined by the GMD (tunnel, x=horizontal)

units : mm

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel x

840

DOOCS prop : FLASH.FEL/XGM.BPM/FL2.HALL/X.TD

841

DAQ channel: FLASH.FEL/XGM.BPM/FL2.HALL:2

842

desc: Besides the well calibrated averaged beam position information there is also the option to measure the beam position on a single bunch level. HOWEVER this methide needs a perfectly adjusted signal level (talk to your local contact !!) and also then the signal to noise is rather small and one needs some averaging ... BUT with this option one can determine if there was a spatial slope on a burst (say forst bunches were lower than the last ones or so ...)

843

units : mm

844

845

(x=horizontal, y = vertial)

846

847

again the same parameter set is available for the **HALL GMD**

==== Photon Diagnostics OPIS[[ >>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/opis_spectrometer/index_eng.html||shape="rect"]](FLASH2) ====

852

853

for more info see:** [[ OPIS>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/opis_spectrometer/index_eng.html||shape="rect"]]**

854

855

(The OPIS hall is not installed yet ...)

856

857

858

{{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/mean photon energy{{/code}}

859

DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL042{{/code}}

860

DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL042{{/code}}

861

desc : mean photon energy ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)

units : eV

{{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/mean wavelength{{/code}}

866

DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}

867

DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}

868

desc : mean wavelength ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)

units : nm

{{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/number of analyzed bunch (in older version this can be found in OPIS tunnel/Expert stuff/General operation parameters/){{/code}}

873

DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL060{{/code}}

874

DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL060{{/code}}

875

desc : The bunch number of the bunch used for the wavelength calculation

876

units :

877

878

{{expand expanded="false" title="More detailed info on OPIS properties"}}

879

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL370,'%','relative width of photoline in percent of the FEL photon energy ROI1, rising flank'

880

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL375,'%','relative width of photoline in percent of the FEL photon energy ROI1, tailing flank'

881

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL470,'%','relative width of photoline in percent of the FEL photon energy ROI1, mean'

882

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL371,'%','relative width of photoline in percent of the FEL photon energy ROI2, rising flank'

883

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL376,'%','relative width of photoline in percent of the FEL photon energy ROI2, tailing flank'

884

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL471,'%','relative width of photoline in percent of the FEL photon energy ROI2, mean'

885

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL372,'%','relative width of photoline in percent of the FEL photon energy ROI3, rising flank'

886

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL377,'%','relative width of photoline in percent of the FEL photon energy ROI3, tailing flank'

887

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL472,'%','relative width of photoline in percent of the FEL photon energy ROI3, mean'

888

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL373,'%','relative width of photoline in percent of the FEL photon energy ROI4, rising flank'

889

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL378,'%','relative width of photoline in percent of the FEL photon energy ROI4, tailing flank'

890

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL473,'%','relative width of photoline in percent of the FEL photon energy ROI4, mean'

891

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL374,'%','relative width of photoline in percent of the FEL photon energy ROI5, rising flank'

892

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL379,'%','relative width of photoline in percent of the FEL photon energy ROI5, tailing flank'

893

FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL474,'%','relative width of photoline in percent of the FEL photon energy ROI5, mean'

894

895

896

If Opis is running typically on the the averaged data is saved. For several experiments it may make sense to save the information for each single bunch. This is up to now done by saving the complete ADC trace of the TOF setup. This is a huge amount of data and needs processing. This has to be performed after the beamtime in close contact to [[Markus Braune>>mailto:markus.braune@desy.de||shape="rect"]] ( responsible for [[OPIS>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/opis_spectrometer/index_eng.html||shape="rect"]])

897

898

899

In case OPIS was not operating there is still information about the **set wavelength** for the undulators (see below) which may differ by up to 5 % from the actual wavelength due to different settings in the FEL ...

==== Electron Beam properties (FLASH2) ====

904

905

===== bunch charge =====

906

907

{{code language="none"}}/FL2/Electron Diagnostic/Bunch charge/after undulator{{/code}}

908

DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}

909

DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}

910

desc: electron bunch charge FLASH2 (average value for each bunchtrain).

units: nC

===== electron bunch energy =====

915

916

{{code language="none"}}/FL2/Electron Diagnostic/Electron energy/energy of first bunch/behind undulators{{/code}}

917

DOOCS prop : {{code language="none"}}FLASH.DIAG/BEAM_ENERGY_MEASUREMENT/FL2XTDS/ENERGY.FLASH2{{/code}}

918

DAQ channel: (% style="color:#5e6c84" %)TTF2.DAQ/PBD2.BEAM.ENERGY.MEAS.ML.COPY/FL2XTDS.ENERGY.FLASH2{{code language="none"}}{{/code}}(%%)

919

desc: electron bunch energy measured behind the undulator. Data is saved with 10 Hz - BUT (for computation reasons) only the energy of the FIRST bunch is recorded. The data is also available for (% style="color:#5e6c84" %)extraction and septum in the beginning of FLASH2

920

921

(% style="letter-spacing:0.0px" %)units: (% class="twikiNewLink" %)MeV

922

923

924

(% style="color: rgb(94, 108, 132); font-weight: 600; letter-spacing: 0px;" %)

925

===== undulator settings =====

926

927

{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/set wavelength 1{{/code}}

928

DOOCS prop : {{code language="none"}}FLASH.FEL/FL2.WAVELENGTHCONTROL/FLASH2.COLOR1/WAVELENGTH{{/code}}

929

DAQ channel: {{code language="none"}}FLASH.FEL/FL2.WAVELENGTHCONTROL/FLASH2.COLOR1/WAVELENGTH{{/code}}

930

desc: Set value for the anticipated wavelength 1 . This parameter is used to set the undulator gap. It may however deviate from the actual wavelength by several % ... For 2 color operation there is also the same parameter for COLOR 2

931

units: nm

932

933

{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/SASE13 gap{{/code}}

934

DOOCS prop : {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE13/GAP{{/code}}

935

DAQ channel: {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE13/GAP{{/code}}

936

desc: gap value of the undulators. This can be used to follow up how many undulators were closed and if there was a taper.

937

units: mm

938

939

The gap values are saved for all 12 undulators (Nr 2 to 13). Undulator 13 is the one closest to the experimental hall.

940

941

=====

942

arrival time (BAM) =====

943

944

945

* see: [[Info collection about the BAMs and how to use the BAM data>>doc:FS-FLASH USER tmp.jddd-linked help pages.Info collection for the BAM.WebHome||shape="rect"]]

946

* The data format of the BAM has been completely altered in the 2022 shutdown

947

* before 2022 BAMs were always saving the arrival time information for each 1µs bucked regardless if there were electrons in the accelerator or not. IN addition the arrival times for FL1 and FL2 were saved in the same parameter ...

948

* THIS is now different. There are new parameters saving only the arrival times for pulses that go to FL1 and to FL2 (in detail: first time slot of the accelerator and second)

949

* There has been also a renaming (and relocation) of the BAMs.

950

** acc: 4DBC3 → FL0.DBC2

951

** FL1: 1SFELC → FL1.SFELC

952

** FL2: FL2XTDS → (% style="color:#172b4d" %)FL2.SEED5

953

* for more Info: [[LINK to detailed infos from MSK>>doc:SDiag.How-to articles.BAM Data Structure.WebHome||shape="rect"]]

954

* [[Link a collection of papers related to the BAM and the analysis of pump-probe experiments>>doc:FS-FLASH USER tmp.Additional helpful things1.FLASH beamlines and instruments references.WebHome]]

955

* a recent [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]

(% style="color:#000000" %)**Discontinued BAM data recording **

960

961

{{code language="none"}}/FL2/Electron Diagnostic/BAM/8FL2XTDS/electron bunch arrival time (low charge){{/code}}

962

//always saved (PBD2)//

963

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/8FL2XTDS/LOW_CHARGE_ARRIVAL_TIME{{/code}}

964

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/8FL2XTDS.LOW_CHARGE_ARRIVAL_TIME{{/code}}

965

desc: Electron bunch arrival time measured with the BAM after the FLASH2 undulator (pulse resolved data)

966

units: ps (bigger numbers indicate later arrivaltime of the electrons)

967

968

**FL1**{{code language="none"}}//Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}

969

//always saved (PBD2)//

970

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}

971

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}

972

desc: Electron bunch arrival time measured with the BAM in the accelerator (pulse resolved data)

973

units: ps (bigger numbers indicate later arrivaltime of the electrons)

974

975

976

* The BAM 4DBC3 measures the arrivaltime of** FLASH 1 and FLASH2** in the same data set (thus also sorted in at /FL1/ !).

977

* The BAM 8FL2XTDS measures only for FLASH2 BUT has the same data structure as the other BAMS ... thus there are also (random) values in in the FLASH1 time slot

978

** Structure: The first values are for FLASH1 bunches. After a gap of about 70 micros ( 70 colums) with as entry for the switching between FLASH 1 and 2 the values for the electrons used in FLASH2 start. The start time of FLASH2 is also recorded in the DAQ. FLASH1 start time is for historic reasons 700. thus if e.g. the start time of FLASH2 ( property name see below) is 1200 it means that FLASH starts at column 500 (1200-700) ... .In case of doubt ask your local contact

979

* [[Link a collection of papers related to the BAM and the analysis of pump-probe experiments >>doc:FS-FLASH USER tmp.Additional helpful things1.FLASH beamlines and instruments references.WebHome]]

980

* [[LINK to detailed infos from MSK (may only work inside DESY network~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|height="12" width="13"~]~]>>url:http://www.desy.de/~~mbock/pages/BAM_daq_channel_descriptions.html||shape="rect"]]

981

* a recent [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]

====== **BAM FL0.DBC2**{{code language="none"}}{{/code}} ======

987

988

(% style="color:#ff6600" %)**DBC2**/electron bunch arrival time (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

989

990

991

/zraw/FLASH.SDIAG/BAM.DAQ/FL0.DBC2.ARRIVAL_TIME.ABSOLUTE.SA2.COMP/dGroup/

992

993

994

//always saved (PBD)//

995

**FL0.DBC2**

996

(% style="color:#000000" %)channel: FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA2.COMP

997

{{code language="none"}} DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE.SA2.COMPDAQ {{/code}}(% style="letter-spacing:0.0px" %)desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). The property contains only the arrival time of the bunches sent to FL2 (e.g. if there are 30 bunches in FL2 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not0). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

998

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

999

1000

1001

(% style="color:#ff6600" %)DBC2/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

1002

1003

{{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.DBC2.ARRIVAL_TIME.ABSOLUTE.SA2/dGroup/{{/code}}

1004

//always saved (PBD)//

1005

{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE{{/code}}

1006

(% style="color:#000000" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE {{code language="none"}}DAQ channel: {{/code}}(%%)

1007

desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 2 in the second part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

1008

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

1009

1010

1011

DBC2/error (% style="color:#f39c12" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1012

//always saved (PBD)//

1013

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.bamError.2

1014

DAQ channel: FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMERROR.2

1015

desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!

1016

1017

DBC2/status (% style="color:#e67e22" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1018

//always saved (PBD)//

1019

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.bamStatus.//2//

1020

DAQ channel: FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS.2

1021

desc: status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

====== **BAM FL2.SEED5**{{code language="none"}}{{/code}} ======

1026

1027

/FL2/Electron Diagnostic/BAM/**SEED5**(% style="color:#ff6600" %)/electron bunch arrival time (HDF5 name not yet implemented - see zraw)

1028

1029

(% style="color:#000000" %){{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.SEED5.ARRIVAL_TIME.ABSOLUTE.SA2.COMP/dGroup/{{/code}}

1030

1031

//always saved (PBD)//

1032

(% style="color:#172b4d" %)**FL2.SEED5**(%%)

1033

(% style="color:#000000" %)channel: FLASH.SDIAG/BAM/(% style="color:#172b4d" %)**FL2.SEED5**(% style="color:#000000" %)/ARRIVAL_TIME.ABSOLUTE.SA1.COMP

1034

{{code language="none"}} DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE.SA1.COMPDAQ {{/code}}(%%)desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020.. The property contains only the arrival time of the bunches sent to FL2 (e.g. if there are 30 bunches in FL2 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

1035

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

(% style="color:#172b4d" %)SEED5(% style="color:#ff6600" %)/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

1040

1041

(% style="color:#000000" %){{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.SEED5.ARRIVAL_TIME.ABSOLUTE.SA2/dGroup/{{/code}}(%%)

1042

//always saved (PBD)//

1043

(% style="color:#172b4d" %)**FL2.SEED5**{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE{{/code}}(%%)

1044

**~ **(% style="color:#000000" %)FLASH.SDIAG/BAM/(% style="color:#172b4d" %)**FL2.SEED5**(% style="color:#000000" %)/ARRIVAL_TIME.ABSOLUTE {{code language="none"}}DAQ channel:{{/code}}(%%)

1045

desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020. Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 2 in the second part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

1046

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

1047

1048

1049

FL2.SEED5/error (% style="color:#f39c12" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1050

//always saved (PBD)//

1051

DOOCS prop : FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.bamError.2

1052

DAQ channel: FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.BAMERROR.2

1053

desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!

1054

1055

FL2.SEED5/status (% style="color:#e67e22" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1056

//always saved (PBD)//

1057

DOOCS prop : FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.bamStatus.//2//

1058

DAQ channel: FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.BAMSTATUS.2

1059

desc: status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

1060

1061

1062

[[Contents>>doc:||anchor="Contents"]]

1063

1064

1065

==== Timing information, rep rate etc. (FLASH2) ====

1066

1067

===== start time of FLASH2 =====

1068

1069

{{code language="none"}}/FL2/Timing/start time flash2{{/code}}

1070

//always saved (PBD2)//

1071

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/BUNCH_POSITION.2{{/code}}

1072

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/BUNCH_POSITION.2{{/code}}

1073

desc: The max 600 µs acceleration time of FLASH is devided between FLASH1 and FLASH2. This 600 µs window starts with FLASH1 (up to now) at a time"label" of 700 µs (for historic reasons). Thus the first bunch of FLASH 1 comes at "700" and the last possibel bunch comes at 1300 (700+600). After FLASH1 train is over ther is a about 70µs switching time with no bunches. Then comes the first FLASH2 bunch. Thus if e.g. the start time of FLASH2 is 1200 it means that FLASH2 starts at column 500 (1200-700) in the HDF5 files. (However for yet unknown reasons this may change by 2-3 colums ...)

1074

units: µs

1075

1076

===== bunch repetition rate =====

1077

1078

{{code language="none"}}/FL2/Timing/repetition rate{{/code}}

1079

//always saved (PBD2)//

1080

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.2{{/code}}

1081

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.2{{/code}}

1082

desc: repetition rate of the bunches / pulses within the burst (FLASH2)

units: kHz

===== set number of pulses =====

1087

1088

(% style="color:#ff6600" %)(HDF5 name not yet implemented - see zraw)(% style="color:#ff0000" %){{code language="none"}}/FL2/Timing/set number of bunches {{/code}}(%%)

1089

//always saved (PBD2)//

1090

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.2 [4th number]{{/code}}

1091

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.2 [4th number]{{/code}}

1092

desc: Number of bunches set in the control (timing) system. The property contains 4 numbers. the last one is the number of pulses (see also [[doc:FLASH.Timing properties]] (internal link)). If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated and thus the actual number of pulses may be smaller than the set one

1093

units:

1094

1095

===== actual number of pulses =====

1096

1097

{{code language="none"}}/FL1/Timing/actual number of bunches{{/code}}

1098

//always saved (PBD2)//

1099

DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/3GUN/NUMBEROFBUNCHES.FLASH2{{/code}}

1100

DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/3GUN/NUMBEROFBUNCHES.FLASH2{{/code}}

1101

desc: Number of bunches measured BEHIND the undulator. If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated this is the actual number that created XUV radiation.The number is calculated by the DAQ middle layer server, (FLASH2)

1102

units:

1103

1104

===== actual pulse pattern recorded after the undulator =====

1105

1106

{{code language="none"}}/FL1/Timing/Bunch pattern/pattern after undulator{{/code}}

1107

//always saved (PBD2)//

1108

DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN.PULSEPATTERN{{/code}}

1109

DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN.PULSEPATTERN{{/code}}

1110

desc: The bunch pattern as function of time in a burst recorded by toroide diagnostic BEHIND the undulator. (FLASH2)

units:

===== Train ID =====

{{code language="none"}}/Timing/train ID{{/code}}

1116

//always saved (PBD2)//

1117

DOOCS prop : {{code language="none"}}none{{/code}}

1118

DAQ channel: {{code language="none"}}none{{/code}}

1119

desc: Each 10 Hz burst has its unique train ID. For the HDF5 dataset the ID is the same for all parameters with the same index (note camera images may be shifted by 1 ID - talk to the experts !)

1120

units:

1121

1122

===== (% style="color:#e67e22" %)Train time(%%) =====

1123

1124

(% style="color:#e67e22" %)//always saved (PBD2)//(%%)

1125

(% style="color:#e67e22" %){{code language="none"}}/Timing/train time{{/code}}

1126

desc:Local time as array of day, hour, minute, second, and centisecond. This dataset is meant for visualisation purposes only. For correlations use the train ID or the Unix time of the time stamp

units: d h min s cs

/Timing/time stamp

(% style="color:#e67e22" %)//always saved (PBD2)//(%%)

1134

(% style="color:#e67e22" %)desc: first column: Local time in unix time. To get day, hour, minute, second you can use unix: e.g. date ~-~-date='@1553617729' or matlab, python etc

1135

second column: microseconds

1136

third column: Train ID of FLASH

1137

1138

1139

(% id="cke_bm_2455529S" style="display:none" %) (%%)currently it is saved as Unix time in : /zraw/FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1/dGroup/time

import time

# epoch time is found in /zraw/FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1/dGroup/time #!!! a leading 1 has to be added !!!

1145

# The time and date of the start of the data taking in the HDF file is encoded in the filename - to roughly check the time

1146

epoch_time = 1709051499.17 # Replace with your epoch time

1147

1148

formatted_time = time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(epoch_time))

1149

print(formatted_time)

[[Contents>>doc:||anchor="Contents"]]

1156

1157

1158

==== User Data (FLASH2) ====

1159

1160

The data saved specifically for detectors at an experiment will show up in /Experiment/ there is a large number of options for cameras or monitoring pslow properties (motor positons etc) for user experiments. For details please ask your local contact.

1161

1162

NOTE: If parameters for an experiment are included on short notice the correct naming in the HDF5 may not be in time and the data will show up in /uncategorized/ with the DOOCS names

1163

1164

The most common and permanently installed device used by experiment are our ADCs:

===== GHz ADCs =====

ADC traces of the (SPDevices 412) GHZ ADCs available for the users . More information about the ADCs can be found** [[here>>doc:FS-FLASH USER tmp.Data Acquisition and controls 1.Controls (DOOCS, jDDD,\.\.\.).MTCA ADCs.WebHome]]**

1169

//saved on DEMAND in the user DAQ//

1170

\\Up to now there are 4 channels available at FL24

1171

\\\\{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH00/TD{{/code}}

1172

{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH01/TD{{/code}}

1173

\\{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH02/TD{{/code}}{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH03/TD{{/code}}

1174

1175

1176

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.ADQ.FL2EXP1/FL2EXP1.CH00/CH00.TD or CH00.DAQ.TD{{/code}}

1177

here the {{code language="none"}}CH00.TD{{/code}} is the full ADC trace as it is sampled ( typically several 100.000 samples per pulse train) while the {{code language="none"}}CH00.DAQ.TD{{/code}} trace only has the number of samples which are sent to the DAQ OR if //grouping// is activated the {{code language="none"}}CH00.DAQ.TD{{/code}} conatins only the grouped spectra. To read the ADC trace with an online analysis program the {{code language="none"}}CH00.DAQ.TD{{/code}} is used preferablly.

1178

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.ADQ.FL2EXP1/FL2EXP1.CH00{{/code}}

1179

1180

In addition there are also additional parameters saved like:

1181

1182

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

1183

* {{code language="none"}}number of samples{{/code}}: total number of samoles recorded for each 10 Hz trigger

1184

* {{code language="none"}}error (ADC):{{/code}}0 indicates that there was no error

1185

* {{code language="none"}}/CH0-CH3/offset{{/code}}: To use the full dynamic range of the ADC one can shift the base line . This offset is saved here.

===== MHz ADCs =====

similar to the GHz ADCs the MHz ADCs are saved with HDF5 names like:

1190

{{code language="none"}}/FL2/Experiment/MTCA-EXP1/SIS8300 100MHz ADC/CH2/TD{{/code}}

1191

DOOCS prop : FLASH.FEL/ADC.SIS.FL2EXP1/FL2EXP1.CH02/CH00.TD

1192

DAQ channel: : FLASH.FEL/ADC.SIS.FL2EXP1/FL2EXP1.CH02

1193

1194

In addition there are also additional parameters saved like:

1195

1196

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

1197

* {{code language="none"}}number of samples{{/code}}: total number of samoles recorded for each 10 Hz trigger

1198

1199

[[Contents>>doc:||anchor="Contents"]]

==== Pump Probe Laser (FLASH2) ====

1204

1205

1206

list of saved parameters status May 2024 (up to now the parameters can be found in /zraw/ ... )

1207

1208

[[attach:FSLADAQ-DAQParameterlistULGAN-2.pdf||target="_blank"]]

1209

1210

[[attach:FSLADAQ-DAQParameterlistFL23-2.pdf||target="_blank"]]

1211

1212

[[attach:FSLADAQ-DAQParameterlistFL24-2.pdf||target="_blank"]]

internal link to parameter list: [[FS-LA DAQ - XWiki>>url:https://xwiki.desy.de/xwiki/bin/view/FSLADAQ/]]

These are the parameters that can be saved in the FL2 User DAQ for the FL2 PP laser//** FOR BEAMLINE FL24**//

**User delay**

Delay (set value):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION_SET.WR

Delay (readback):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION.RD

1241

1242

1243

(% style="letter-spacing:0.0px" %)Delay (encoder readback):

1244

1245

1246

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.ENCODER_POSITION.RD

OXC. jitter:

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/CURRENT_INPUT_JITTER.RD

**FL24 Pulse resolved energy:**

1258

1259

OPCPA output (photodiode signal raw ADC trace 16000 samples):

1260

1261

1262

/zraw/FLASH.LASER/FLASH2CPUULGAN1.ADCSCOPE/CH23.TD/dGroup

1263

1264

1265

(% style="letter-spacing:0.0px" %)Upper breadboard Photodiode (THG) burst (photodiode signal raw ADC trace 16000 samples)::

1266

1267

1268

/zraw/FLASH.LASER/FLASH2CPUULGAN1.ADCSCOPE/CH26.TD/dGroup

1269

1270

1271

Upper breadboard Photodiode (THG) energy (analyzed signal. integration over pulses in the ADC trace. contains for each laser pulse the pulse energy in a.u.)

1272

1273

1274

/zraw/FLASH.LASER/MOD24.PES/FL24_userPD/dGroup

**FL24 LAM (Laser Arrivaltime Monitor) pulse resolved data:**

1279

1280

Signal of Photodiode1 - for experts only... (analyzed signal. integration over pulses in the ADC trace. )

1281

1282

1283

/zraw/FLASH.LASER/MOD24.PES/LAM.PD1/dGroup

1284

1285

1286

Signal of Photodiode2 - for experts only... (analyzed signal. integration over pulses in the ADC trace.)

1287

1288

1289

/zraw/FLASH.LASER/MOD24.PES/LAM.PD2/dGroup

1290

1291

1292

"Actual" LAM Signal - to be calibrated ...... (analyzed signal. integration over pulses in the ADC trace.)

1293

1294

1295

/zraw/FLASH.LASER/MOD24.PES/LAM.PDBAL/dGroup

1296

1297

1298

The delay feedback(% style="letter-spacing:0.0px" %)

1299

1300

1301

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE26

1302

1303

1304

The LAM delay feedback(% style="letter-spacing:0.0px" %) (the pulse energy signal, which is saved in the above but maybe it’s good to have this also as slow, in the case these two numbers are not the same the sysdc was active instead of the LAM):

1305

1306

1307

FLASH.LASER/MOD24.PES/LAM.PDBAL/PULSEENERGY.MEAN

LAM Delay line act:

{{code language="none"}}FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.1.POSITION.RD{{/code}}

LAM Delay line set:

FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.1.POSITION_SET.WR

1317

1318

1319

LAM Delay line encoder:

1320

1321

1322

FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.1.ENCODER_POSITION.RD

1323

1324

1325

Temperature feedback:

1326

1327

1328

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE24

1329

1330

1331

**Feedback mode** (if this is not =1 the delay FB is not active, then it’s either temp feedback controlled or failsave, maybe it’s good to have):

1332

1333

1334

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.INTS/INTEGER30

**FL24 Attenuator angle:**

1339

1340

1341

FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS

1342

1343

1344

**FL24 Polarization control:**

1345

1346

1347

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL24/FPOS

1348

1349

1350

**SysDC delay error:**

1351

1352

1353

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE26

**Timing error: (these two need to be observed and both=0 means no error)**

1358

1359

1360

FLASH/CPUULGAN1.TIMING/ULGAN1/dT_alarm

FLASH/CPUULGAN1.TIMING/ULGAN1/dMPN

1365

1366

1367

**Laser error status:**

1368

1369

1370

**FL24 Virtual camera X and Y history, beam size: (use slow data)**

1371

1372

1373

FLASH.LASER/MOD24.BEAMPOS/UV.VF_BP/CENTER.X

FLASH.LASER/MOD24.BEAMPOS/UV.VF_BP/CENTER.Y

FLASH.LASER/MOD24.CAM/UV.14.VF/ROI_SPECTRUM.X.SIG

//{{code language="none"}}/FL2/Experiment/Pump probe laser/FL24/attenuator position{{/code}}always saved (PBD2)//

1386

DOOCS prop : {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS{{/code}}

1387

DAQ channel: {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS{{/code}}

1388

desc: attenuation of the PPLaser in the FL24 hutch (rotation of a waveplate)

units : deg.

//{{code language="none"}}/FL2/Experiment/Pump probe laser/FL24/polarization position{{/code}}always saved (PBD2)//

1394

DOOCS prop : {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR2.FL24/FPOS{{/code}}

1395

DAQ channel: {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR2.FL24/FPOS{{/code}}

1396

desc: attenuation of the PPLaser in the FL24 hutch (rotation of a waveplate)

units : deg.

{{code language="none"}}/FL1/Experiment/Pump probe laser/laser delay readback{{/code}}

1401

//always saved (PBD2)//

1402

DOOCS prop : {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/FMC0.MD22.0.POSITION.RD{{/code}}

1403

DAQ channel: {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/FMC0.MD22.0.POSITION.RD{{/code}}

1404

desc: delay of the Pump probe laser - measured by the read back position of the motor. There is also the set value available ( upto now these values are only updating every 1-2 seconds. There is no fast encoder property as on FLASH1 available)

units : ps )

{{code language="none"}}/FL1/Experiment/Pump probe laser/Synchronization/timing jitter RMS{{/code}}

1409

//always saved (PBD)//

1410

DOOCS prop : {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/CURRENT_INPUT_JITTER.RD{{/code}}

1411

DAQ channel: {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/CURRENT_INPUT_JITTER.RD{{/code}}

1412

desc: rms jitter of the fs-Oscillator

units: fs

==== FL 26 Pump Probe Laser (FLASH2) ====

1418

1419

These are the parameters that can be saved in the FL2 User DAQ for the FL2 PP laser//** FOR BEAMLINE FL26**//

**User delay**

Delay (set value):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION_SET.WR

Delay (readback):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION.RD

1434

1435

1436

Delay (encoder readback):

1437

1438

1439

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.ENCODER_POSITION.RD

OXC. jitter:

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/CURRENT_INPUT_JITTER.RD

**Parameters for FL26**

1450

1451

(% class="wrapped" %)

1452

|(((

1453

FL2PPL FL26 REMI Attenuation: HWP motor current position

1454

)))|(((

1455

FLASH.FEL/FLAPP2BEAMLINES/MOTOR11.FL26B/FPOS

1456

)))

1457

|(((

1458

FL2PPL FL26 REMI Polarization: linear polarization angle

1459

)))|(((

1460

FLASH.FEL/FLAPP2BEAMLINES/MOTOR12.FL26B/FPOS

1461

)))

1462

|(((

1463

FL2PPL FL26 REMI Diagnostics: NIR spectrum

1464

)))|(((

1465

FLASH.LASER/MOD26.SPECT/REMI/DAQ_CHANNEL

1466

)))

1467

|(((

1468

FL2PPL FL26 REMI Diagnostics: photo diode input MOD2.6 - pulse energy mean

1469

)))|(((

1470

FLASH.LASER/MOD26.PES/RE_OUT/PULSEENERGY.MEAN

1471

)))

1472

|(((

1473

FL2PPL FL26 REMI Diagnostics: photo diode input MOD2.6 - intra burst pulse energy

1474

)))|(((

1475

FLASH.LASER/MOD26.PES/RE_OUT/DAQ_CHANNEL

1476

)))

1477

|(((

1478

FL2PPL FL26 REMI Diagnostics: photo diode input MOD2.6 - raw adc

1479

)))|(((

1480

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH04.TD

1481

)))

1482

|(((

1483

FL2PPL FL26 REMI Diagnostics: photo diode input REMI - pulse energy mean

1484

)))|(((

1485

FLASH.LASER/MOD26.PES/INC_BOX/PULSEENERGY.MEAN

1486

)))

1487

|(((

1488

FL2PPL FL26 REMI Diagnostics: photo diode input REMI - intra burst pulse energy

1489

)))|(((

1490

FLASH.LASER/MOD26.PES/INC_BOX/DAQ_CHANNEL

1491

)))

1492

|(((

1493

FL2PPL FL26 REMI Diagnostics: photo diode input REMI - raw adc

1494

)))|(((

1495

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH05.TD

1496

)))

1497

|(((

1498

FL2PPL FL26 REMI In coupling: filter wheel 1 position

1499

)))|(((

1500

FLASH/MOD26.FW1/FLASH2MOD26/pos

1501

)))

1502

|(((

1503

FL2PPL FL26 REMI In coupling: filter wheel 2 position

1504

)))|(((

1505

FLASH/MOD26.FW2/FLASH2MOD26/pos

1506

)))

1507

|(((

1508

FL2PPL FL26 REMI: Energy meter REMI incoupling breadboard

1509

)))|(((

1510

FLASH.LASER/MOD26.OPHIRE/REINC.54/DAQ_CHANNEL

1511

)))

1512

|(((

1513

FL2PPL FL26 REMI Incoupling: focusing lens position

1514

)))|(((

1515

FLASH.FEL/FLAPP2BEAMLINES/MOTOR3.FL26B/FPOS

1516

)))

1517

|(((

1518

FL2PPL FL26 REMI Incoupling: nearfield

1519

)))|(((

1520

FLASH.LASER/MOD26.CAM/REINC.21.NF/DAQ_CHANNEL

1521

)))

1522

|(((

1523

FL2PPL FL26 REMI Incoupling: focus

1524

)))|(((

1525

FLASH.LASER/MOD26.CAM/REINC.22.FF/DAQ_CHANNEL

1526

)))

1527

|(((

1528

FL2PPL FL26 REMI Drift: relative arrival time intra burst LAM balanced - calb. in the PES

1529

)))|(((

1530

FLASH.LASER/MOD26.PES/LAM_DIFF/DAQ_CHANNEL

1531

)))

1532

|(((

1533

FL2PPL FL26 REMI Drift: forward signal (PD1) raw

1534

)))|(((

1535

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH00.TD

1536

)))

1537

|(((

1538

FL2PPL FL26 REMI Drift: backward signal (PD2) raw

1539

)))|(((

1540

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH01.TD

1541

)))

1542

|(((

1543

FL2PPL FL26 REMI Drift: mean relative burst arrival time - avarage of the calib value

1544

)))|(((

1545

FLASH.LASER/MOD26.PES/LAM_DIFF/PULSEENERGY.MEAN

1546

)))

1547

|(((

1548

FL2PPL FL26 REMI Drift: delay line position (ODL of the LAM REMI)

1549

)))|(((

1550

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL26B/FPOS

1551

)))

1552

|(((

1553

FL2PPL FL26 Laser Hutch: delay line position (ODL of the osc. Sync / user delay)

1554

)))|(((

1555

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION.RD

1556

)))

1557

|(((

1558

FL2PPL FL26 REMI Drift: delay line encoder position (ODL REMI raw value)

1559

)))|(((

1560

FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.0.ENCODER_POSITION.RD

1561

)))

1562

|(((

1563

Jiiter between oscillator and MLO (inloop jitter osc. Sync)

1564

)))|(((

1565

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/CURRENT_INPUT_JITTER.RD

1566

)))

1567

|(((

1568

Temperature controlled fiber (PWM signal to the temperature controlled fiber delay sysdc)

1569

)))|(((

1570

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE23

1571

)))

1572

|(((

1573

Temperature controlled fiber (Temp of the fiber delay sysdc)

1574

)))|(((

1575

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE24

1576

)))

1577

|(((

1578

Sydc feedback data if LAM is not activated (sysdc delay)

1579

)))|(((

1580

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE26

)))

=== "/uncategorized/" ===

1587

1588

If parameters for an experiment are included on short notice the correct naming in the HDF5 may not be in time and the data will show up in /uncategorized/ with their DOOCS names

1589

1590

1591

=== HDF5 structure revisions ===

1592

1593

Starting with Beamblock 4, August 2018, the hierarchy of the HDF group names have been adapted to reflect the new situation at FLASH. FLASH2 is operating for users quite some time now. Therefore, both accelerators appear equally in their respective HDF groups, namely "/FL1" and "/FL2". The root group of proper, by run organised HDF files have an attribute called "version". This version attribute has changed from "0.2.x" to "0.3.x". The changes in detail:

1594

1595

1596

* All FLASH1 related HDF groups moved to group "/FL1", i.e. a new prefix "/FL1" is added to their HDF path.

1597

* The ambigious term "pulse" has been replaced by "train" to refer to "pulse train". Most notably, the dataset "/Timing/pulse ID" has changed to "/Timing/train ID".

1598

* A number of inconsistent names have been streamlined. The relevant changes are listed in the following table.

1599

1600

(% class="wrapped" %)

1601

|=(((

1602

earlier HDF path (vers. 0.2)

)))|=(((

is now (vers. 0.3)

)))

|(((

/Photon Diagnostic/GMD/Beam position/position BDA x

1608

)))|(((

1609

/FL1/Photon Diagnostic/GMD/Beam position/position BDA horizontal

1610

)))

1611

|(((

1612

/Photon Diagnostic/GMD/Beam position/position BDA y

1613

)))|(((

1614

/FL1/Photon Diagnostic/GMD/Beam position/position BDA vertical

1615

)))

1616

|(((

1617

/Photon Diagnostic/GMD/Beam position/position tunnel x

1618

)))|(((

1619

/FL1/Photon Diagnostic/GMD/Beam position/position tunnel horizontal

1620

)))

1621

|(((

1622

/Photon Diagnostic/GMD/Beam position/position tunnel y

1623

)))|(((

1624

/FL1/Photon Diagnostic/GMD/Beam position/position tunnel vertical

1625

)))

1626

|(((

1627

/Experiment/Pump probe laser/BPM/position x

1628

)))|(((

1629

/FL1/Experiment/Pump probe laser/BPM/position horizontal

1630

)))

1631

|(((

1632

/Experiment/Pump probe laser/BPM/position y

1633

)))|(((

1634

/FL1/Experiment/Pump probe laser/BPM/position vertical

1635

)))

1636

|(((

1637

/FL2/Photon Diagnostic/GMD/Beam position/Average/position hall horizontal

1638

)))|(((

1639

/FL2/Photon Diagnostic/GMD/Average beam position/position hall horizontal

1640

)))

1641

|(((

1642

/FL2/Photon Diagnostic/GMD/Beam position/Average/position hall vertical

1643

)))|(((

1644

/FL2/Photon Diagnostic/GMD/Average beam position/position hall vertical

1645

)))

1646

|(((

1647

/FL2/Photon Diagnostic/GMD/Beam position/Average/position tunnel horizontal

1648

)))|(((

1649

/FL2/Photon Diagnostic/GMD/Average beam position/position tunnel horizontal

1650

)))

1651

|(((

1652

/FL2/Photon Diagnostic/GMD/Beam position/Average/position tunnel vertical

1653

)))|(((

1654

/FL2/Photon Diagnostic/GMD/Average beam position/position tunnel vertical

1655

)))

1656

|(((

1657

/FL2/Photon Diagnostic/GMD/Average energy/hall

1658

)))|(((

1659

/FL2/Photon Diagnostic/GMD/Average energy/energy hall

1660

)))

1661

|(((

1662

/FL2/Photon Diagnostic/GMD/Average energy/hall (raw)

1663

)))|(((

1664

/FL2/Photon Diagnostic/GMD/Average energy/energy hall (raw)

1665

)))

1666

|(((

1667

/FL2/Photon Diagnostic/GMD/Average energy/tunnel

1668

)))|(((

1669

/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel

1670

)))

1671

|(((

1672

/FL2/Photon Diagnostic/GMD/Average energy/tunnel (raw)

1673

)))|(((

1674

/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel (raw)

1675

)))

1676

|(((

1677

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/hall x

1678

)))|(((

1679

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position hall horizontal

1680

)))

1681

|(((

1682

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/hall y

1683

)))|(((

1684

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position hall vertical

1685

)))

1686

|(((

1687

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/tunnel x

1688

)))|(((

1689

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel horizontal

1690

)))

1691

|(((

1692

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/tunnel y

1693

)))|(((

1694

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel vertical

1695

)))

1696

1697

[[Contents>>doc:||anchor="Contents"]]

Wiki source code of The FLASH HDF5 structure