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Changes for page Gotthard related stuff

Last modified by sndueste on 2025-08-22 10:41
From version 16.1
edited by sndueste
on 2023-09-15 13:46
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

Details

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1 +FLASHUSER.Misc.jddd-linked help pages.WebHome
Content
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1 -== ==
1 +== page content: ==
2 2  
3 -{{toc/}}
3 +{{toc maxLevel="2"/}}
4 4  
5 +
5 5  == Info collection related to the Detector ==
6 6  
7 7  * [[Data sheet of a macro objective>>attach:MP-E_65mm_F2.8_1-5x_Instruction_DE.pdf]]
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9 9  * [[attach:READ_ME_GOTTHARD_detector.pdf]]: READ_ME_GOTTHARD_detector.pdf (Server information is outdated, see below)
10 10  * some investigation related to read out noise for different exposure times [[attach:GOTTHARD noise evaluation and exposure time dependence (002).pdf]]
11 11  
12 -\\
13 13  
14 -Ethernet connections:
15 15  
16 -(% 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
17 17  * gbit port  <~-~-->  Server PC (hasfl2det01 at FLASH2, no server currently at FLASH1)
18 18  * base-T     <~-~-->  Office net
19 19  
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21 21  
22 22  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"
23 23  
24 -\\
25 25  
26 26  * Main Gotthard panel for users :
27 27  
28 28  [[image:attach:Clipboard05.gif||height="400"]]
29 -\\
32 +
30 30  
31 -\\
32 32  
33 33  * Exp2 DAQ RC gui for recording Gotthard data. EXPERIMENT_GOTTHARD has to be included
34 34  
35 35  [[image:attach:Clipboard01.gif||height="400"]]
36 36  
37 -\\
38 38  
40 +
39 39  == Operation hints (June 2023): ==
40 40  
41 -(% style="list-style-type: square;" %)
43 +(% style="list-style-type:square" %)
42 42  * **Where is the GOTTHARD GUI:** FLASH2 - Panel: Infrastructure tab → Miscellaneous tab → FLASH2 GOTTHARD ctrl button
43 43  * **Never change a running system:** Do not change parameters while the Detector is running/taking data, The detector will crash.
44 44  * Furthermore the module will crash if recieving to much light (e.g. illuminating with flash light during data dating.
45 45  * **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)
46 46  
47 -(% style="list-style-type: square;" %)
49 +(% style="list-style-type:square" %)
48 48  * **Robooting the GOTTHARD** (if it has crashed): 
49 -(% style="list-style-type: square;" %)
51 +(% style="list-style-type:square" %)
50 50  ** 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
51 51  ** hard reset: power down the GOTTHARD, wait some seconds, Repower the module, wait for reconnection to server/GUI
52 52  * **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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55 55  
56 56  Using burst mode (standard operation as of June 2023)
57 57  
58 -(% style="list-style-type: square;" %)
60 +(% style="list-style-type:square" %)
59 59  * 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
60 60  * Exposure range is 2**00ns <  Exposure < ~~1/3 * Frame periode**
61 -* The periode is:** 9968ns for 100kHz, 4984 for 200kHz, 1993 for 500kHz**
62 -* 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**
63 63  * Number of Shots: Number of trigger events before self stopping, select large number for permanent operation
64 64  
65 65  == Modules and their exchange ==
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66 66  
67 67  Two (Three) modules available (physically at FLASH):
68 68  
69 -(% class="wrapped relative-table" style="width: 64.2451%;" %)
71 +(% class="relative-table wrapped" style="width:64.2451%" %)
70 70  |=(((
71 71  hostname
72 72  )))|=(((
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124 124  )))|(((
125 125  ?
126 126  )))|(% colspan="1" %)(((
127 -\\
129 +
128 128  )))|(((
129 129  bchip_mpc1922Receiver_petra.config
130 130  )))|(% colspan="1" %)(((
131 -\\
133 +
132 132  )))
133 133  
134 -\\
135 135  
137 +
136 136  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/**
137 137  
138 -\\
139 139  
140 140  == GOTTHARD Server ==
141 141  
142 -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.**
143 143  
144 -\\
145 145  
146 146  == Main Parameters and limits ==
147 147  
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165 165  )))|(((
166 166  ~~2/3 of period time
167 167  )))|(% colspan="1" %)(((
168 -\\
168 +
169 169  )))
170 170  |(((
171 171  Min. period time
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172 172  )))|(((
173 173  ca. 930 ns
174 174  )))|(% colspan="1" %)(((
175 -\\
175 +
176 176  )))
177 177  |(((
178 178  Max repetition frequ.
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182 182  833 kHz (software limited)
183 183  )))
184 184  
185 -\\
186 186  
186 +
187 187  == Soft reset a GOTTHARD Module ==
188 188  
189 -(% style="list-style-type: square;" %)
189 +(% style="list-style-type:square" %)
190 190  * Open console on Linux PC (connected to DESY net)
191 191  * write "telnet cfeld-gotthard02" (or the respective Host name or IP of the module)
192 -(% style="list-style-type: square;" %)
192 +(% style="list-style-type:square" %)
193 193  ** you should be connected to the GOTTHARD onboard system → </root:
194 194  * type: "reboot"
195 -(% style="list-style-type: square;" %)
195 +(% style="list-style-type:square" %)
196 196  ** the module reboots (wait ~~1-2 min), the telnat connection will be cut due to reboot.
197 197  
198 -\\
199 199  
199 +
200 200  == Triggering the Gotthard with a burst trigger ==
201 201  
202 202  it is also possible to trigger the Gotthard not only with 10 Hz but with a burst trigger
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221 221  
222 222  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.
223 223  
224 -\\
225 225  
226 226  by:
227 227  
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235 235  
236 236  Switzerland
237 237  
238 -\\
239 239  
240 240  == Using the Spectralyzer together with Gotthard ==
241 241  
242 242  one needs spectralyzer 0.2.4 or newer
243 243  
244 -\\
245 245  
246 246  start spectralyzer on one of our consoles ( works for fl24 and fl26user )  (for installing new version or for other users .. ask Christopher Behrens... )
247 247  
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251 251  (spectralyzer) fl26user@hasfcons1:~~$ spectralyzer
252 252  )))
253 253  
254 -\\
255 255  
256 256  [[image:url:https://ttfinfo.desy.de/Flash2_FL26elog/data/2023/06/2023-02-10T16:03:53-00.jpg||height="250"]]
257 257  
258 258  [[image:attach:image2023-9-15_11-16-3.png||height="400"]]
259 259  
260 -\\
261 261  
262 -\\
263 263  
264 -\\
265 265  
266 -\\
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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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