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Changes for page Gotthard related stuff

Last modified by sndueste on 2025-08-22 10:41
From version 18.1
edited by sndueste
on 2023-09-15 13:52
Change comment: There is no comment for this version
To version 20.1
edited by sndueste
on 2025-08-22 10:41
Change comment: There is no comment for this version

Summary

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1 +FLASHUSER.Misc.jddd-linked help pages.WebHome
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1 -=== page content: ===
1 +== page content: ==
2 2  
3 -== ==
4 -
5 5  {{toc maxLevel="2"/}}
6 6  
7 -\\
8 8  
9 -----
10 -
11 11  == Info collection related to the Detector ==
12 12  
13 13  * [[Data sheet of a macro objective>>attach:MP-E_65mm_F2.8_1-5x_Instruction_DE.pdf]]
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15 15  * [[attach:READ_ME_GOTTHARD_detector.pdf]]: READ_ME_GOTTHARD_detector.pdf (Server information is outdated, see below)
16 16  * some investigation related to read out noise for different exposure times [[attach:GOTTHARD noise evaluation and exposure time dependence (002).pdf]]
17 17  
18 -\\
19 19  
20 -Ethernet connections:
21 21  
22 -(% style="list-style-type: square;" %)
15 +Ethernet and trigger  connections:
16 +
17 +[[image:attach:20230922_161707_resized.jpg||thumbnail="true" height="250"]]
18 +
19 +(% style="list-style-type:square" %)
20 +* trigger at port 1
23 23  * gbit port  <~-~-->  Server PC (hasfl2det01 at FLASH2, no server currently at FLASH1)
24 24  * base-T     <~-~-->  Office net
25 25  
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27 27  
28 28  for now very short: run the Exp2 DAQ with EXPERIMENT_GOTTHARD included as shown below. AND press the start button in the Gotthard DAQ (you get there from the Gotthard panel lower left button "Gotthard DAQ"
29 29  
30 -\\
31 31  
32 32  * Main Gotthard panel for users :
33 33  
34 34  [[image:attach:Clipboard05.gif||height="400"]]
35 -\\
32 +
36 36  
37 -\\
38 38  
39 39  * Exp2 DAQ RC gui for recording Gotthard data. EXPERIMENT_GOTTHARD has to be included
40 40  
41 41  [[image:attach:Clipboard01.gif||height="400"]]
42 42  
43 -\\
44 44  
40 +
45 45  == Operation hints (June 2023): ==
46 46  
47 -(% style="list-style-type: square;" %)
43 +(% style="list-style-type:square" %)
48 48  * **Where is the GOTTHARD GUI:** FLASH2 - Panel: Infrastructure tab → Miscellaneous tab → FLASH2 GOTTHARD ctrl button
49 49  * **Never change a running system:** Do not change parameters while the Detector is running/taking data, The detector will crash.
50 50  * Furthermore the module will crash if recieving to much light (e.g. illuminating with flash light during data dating.
51 51  * **Checking/switching server:** The server is reachable from the GOTTHARD GUI (lower left corner find the status of the server PC "hasfl2det01") click it to open server/watchdog control. The server is otherwise found under FLASH.SYSTEM → HASFL2DET01.WATCH. Open control of SVR.GOTTHARD (for start/stop/reboot)
52 52  
53 -(% style="list-style-type: square;" %)
49 +(% style="list-style-type:square" %)
54 54  * **Robooting the GOTTHARD** (if it has crashed): 
55 -(% style="list-style-type: square;" %)
51 +(% style="list-style-type:square" %)
56 56  ** soft reboot: 1. open console on linux DESY PC, 2. type "telnet (Hostname/IP)" e.g. "telnet cfeld-gotthard02" , 3. you are logged on the GOTTHARD module as /root, type "reboot", 4. wait until server/GUI has reconnected to the module
57 57  ** hard reset: power down the GOTTHARD, wait some seconds, Repower the module, wait for reconnection to server/GUI
58 58  * **In case of a crashes** (no data taking, no reaction on input: Reboot the detector) or if GUI input returns error: Check connection (Power/Data), check GOTTHARD server
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61 61  
62 62  Using burst mode (standard operation as of June 2023)
63 63  
64 -(% style="list-style-type: square;" %)
60 +(% style="list-style-type:square" %)
65 65  * Do not change the delay in the GOTTHARD GUI. The Alignment to the FEL pulses are done by adjusting the FLASH trigger: FL2EXP1/RTM.TRG6, it can be opened from the GOTTHARD GUI or from FLASH2 → Beamlines → FL26 → Exp. control → Patch Panel26-2 → MTCA Trigger 2
66 66  * Exposure range is 2**00ns <  Exposure < ~~1/3 * Frame periode**
67 -* The periode is:** 9968ns for 100kHz, 4984 for 200kHz, 1993 for 500kHz**
68 -* The number of** frames must be lower than 125, for stable operation 120**
63 +* The periode is:** 9968ns for 100kHz, 4984 for 200kHz, 1993 for 500kHz**
64 +* The number of** frames must be lower than 125, for stable operation 120**
69 69  * Number of Shots: Number of trigger events before self stopping, select large number for permanent operation
70 70  
71 71  == Modules and their exchange ==
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72 72  
73 73  Two (Three) modules available (physically at FLASH):
74 74  
75 -(% class="wrapped relative-table" style="width: 64.2451%;" %)
71 +(% class="relative-table wrapped" style="width:64.2451%" %)
76 76  |=(((
77 77  hostname
78 78  )))|=(((
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130 130  )))|(((
131 131  ?
132 132  )))|(% colspan="1" %)(((
133 -\\
129 +
134 134  )))|(((
135 135  bchip_mpc1922Receiver_petra.config
136 136  )))|(% colspan="1" %)(((
137 -\\
133 +
138 138  )))
139 139  
140 -\\
141 141  
137 +
142 142  To change a module the respective config file has to be selected. However changing it will crash the server, thus, it is not possible to change on the fly. Connact Sören if there is the need to exchange a module. However, the differences in the configs are only the hostname. (**To be tested: On the fly might work, if one edits the config-file itself after switching of the server instead of selecting another config file in the GUI. But how to transport this information to the GUI? → Display the first line of the config file!**) The config files are located at the **hasfl2det01: /export/doocs/server/gotthard_server/cfgs/**
143 143  
144 -\\
145 145  
146 146  == GOTTHARD Server ==
147 147  
148 -The server for GOTTHARD (FLASH2) runs on **hasfl2det01**. Its watchdog and control (svr.GOTTHARD) can be found under** FLASH.SYSTEMS - HASFL2DET01.**
143 +The server for GOTTHARD (FLASH2) runs on **hasfl2det01**. Its watchdog and control (svr.GOTTHARD) can be found under** FLASH.SYSTEMS - HASFL2DET01.**
149 149  
150 -\\
151 151  
152 152  == Main Parameters and limits ==
153 153  
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171 171  )))|(((
172 172  ~~2/3 of period time
173 173  )))|(% colspan="1" %)(((
174 -\\
168 +
175 175  )))
176 176  |(((
177 177  Min. period time
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178 178  )))|(((
179 179  ca. 930 ns
180 180  )))|(% colspan="1" %)(((
181 -\\
175 +
182 182  )))
183 183  |(((
184 184  Max repetition frequ.
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188 188  833 kHz (software limited)
189 189  )))
190 190  
191 -\\
192 192  
186 +
193 193  == Soft reset a GOTTHARD Module ==
194 194  
195 -(% style="list-style-type: square;" %)
189 +(% style="list-style-type:square" %)
196 196  * Open console on Linux PC (connected to DESY net)
197 197  * write "telnet cfeld-gotthard02" (or the respective Host name or IP of the module)
198 -(% style="list-style-type: square;" %)
192 +(% style="list-style-type:square" %)
199 199  ** you should be connected to the GOTTHARD onboard system → </root:
200 200  * type: "reboot"
201 -(% style="list-style-type: square;" %)
195 +(% style="list-style-type:square" %)
202 202  ** the module reboots (wait ~~1-2 min), the telnat connection will be cut due to reboot.
203 203  
204 -\\
205 205  
199 +
206 206  == Triggering the Gotthard with a burst trigger ==
207 207  
208 208  it is also possible to trigger the Gotthard not only with 10 Hz but with a burst trigger
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227 227  
228 228  Alignment: One of the four lemo connectors on G1 outputs its exposure window. Using an oscilloscope, one can use a photodiode under the beam and align the pulses from the diode and the exposure window of G1 by fine tuning the exposure time of G1 and/or the setting of "delay after trigger" from the detector, or "delay time" of the wave-generator (if a wave-generator is used to generate the triggers for every pulse). After this, one can do a fine scan of trigger delay to find an optimal setting with highest signal after putting G1 under the beam.
229 229  
230 -\\
231 231  
232 232  by:
233 233  
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241 241  
242 242  Switzerland
243 243  
244 -\\
245 245  
246 246  == Using the Spectralyzer together with Gotthard ==
247 247  
248 248  one needs spectralyzer 0.2.4 or newer
249 249  
250 -\\
251 251  
252 252  start spectralyzer on one of our consoles ( works for fl24 and fl26user )  (for installing new version or for other users .. ask Christopher Behrens... )
253 253  
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257 257  (spectralyzer) fl26user@hasfcons1:~~$ spectralyzer
258 258  )))
259 259  
260 -\\
261 261  
262 262  [[image:url:https://ttfinfo.desy.de/Flash2_FL26elog/data/2023/06/2023-02-10T16:03:53-00.jpg||height="250"]]
263 263  
264 264  [[image:attach:image2023-9-15_11-16-3.png||height="400"]]
265 265  
266 -\\
267 267  
268 -\\
269 269  
270 -\\
271 271  
272 -\\
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Flash_G1.pdf
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GOTTHARD noise evaluation and exposure time dependence (002).pdf
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MP-E_65mm_F2.8_1-5x_Instruction_DE.pdf
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READ_ME_GOTTHARD_detector.pdf
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