 Thu Jun 6 19:47:01 2024, Carsten, DAQ, Exchange of Mesytec CFD/shaper - noise on signal lines from ESR magnets
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Jan exchanged the Mesytec CFD/shper since it could not be "remote controlled" anymore. The new one has different shaping times and delays.
It is noted the threshold range is rather small.
With the new shaper only the x100 signals could meaningfully discriminated etc.
After start of the ESR (magnets etc.) the signals of the 10x channels see quite some noise that makes it more difficult to adjust the thresholds for the low signals. |
Fri Jun 7 09:15:31 2024, Carsten, DAQ, Updated Channel List 
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Sat Jun 8 12:45:05 2024, Carsten, DAQ, Temporary change of RF signal
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The setting was 1.540974 MHz and division factor 68 (for a 200 MeV/u) beam, and the signal was taken from a signal generator.
I now switch to the "real" RF signal from the accelerator (~400MeV/u), that is 1.9693 MHz and the factor is set to 88.
This should be set back for laser tests or adjusted when we have the real decellerated beam. |
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Mon Jun 10 08:57:35 2024, Carsten/Konstantin, DAQ, Further Tests from Sunday 2024-06-09 - new voltages and tresholds for PMTs - testdata in files
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Voltages and thresholds increased for PMT Middle and North (in order to account for the ADC measurement in DAQ2
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PMT South ("braodband") ET9422 | 1500 V | thresh: 7
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PMT Middle ("smallband") ET9423 | 2650 V | thresh: 10
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PMT North ("smallband") ET9423 | 2650 V | thresh: 12
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Tests with laser
Thresholds adjusted for PD SO and PD NO.
Smaller adjustements in the analysis cdoe of DAQ1 (directory 229Th) to deal with the proper alignment of laser steps (Step-spectra). Seems to solved now.
DAQ rate/trigger rate DAQ1 - interference with Labview
DAQ1 can be started without connection to Labview server after some timeout (~ 1min) or so the usual trigger rtate of 200 Hz can be seen in mbs (via: "sh acq" command)
If the Labview server is closed, e.g. during the run or between to laser runs - the DAQ rate drops to 30 Hz only. Very likely MBS is busy trying to fetch data from the non existing Labiew server.
The problem can be solved by leaving closing the the DAQ (MBS not Go4...) and restarting mbs/DAQ, e.g. via @shutdown, leave mbs, resl, start mbs, Qstartup, start acq.
Of course, also Go4 needs to be restarted to establish a new connection to MBS.
The DAQ rate of DAQ1 should be regularly checked with sh acq !
Test data
DAQ1: 005.lmd
DAQ2: 010.lmd
both rubbish, partially adjustments of threshilds etc.
~2.7e6 ions (238U92+)
201 laser steps 550nm, 549nm, 50 shots per step
DAQ1: 006.lmd
DAQ2: 011.lmd/012.lmd
Threshold for PD SO not adjusted
restart
DAQ1: 007.lmd
DAQ2 013-017.lmd
same with few 10^5 ions:
DAQ1: 008.lmd
DAQ2: 018-020.lmd |
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Mon Jun 10 09:17:38 2024, Carsten, DAQ, Updated Channel List
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Tue Jun 11 09:17:46 2024, Julien, Konstantin, Lukas, DAQ, Important commands (DAQ1)
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To connect to the DAQ1 pc, open a terminal and type:
ssh atplaser@r4l-41
Enter password for user atplaser (note that you're typing on an English keyboard).
To start MBS on DAQ1 go to folder mbsrun/E0052/DAQ1 via "cd mbsrun/E0052/DAQ1" and start mbs by typing "mbs". If you want to ensure that you are in the correct folder list the content of the folder by using "ls -l". You should see the list depicted in the second attachment.
Finally, to start the data acquisition (ensure that the 'medusa' is running on atppc023) use commands
@startup
sta ac
within the mbs prompt. You should see a similar result as in attachment 3. Particularly, note the important line
"-R4L-41 :read_meb :connected successfully to LabView Server. ".
A more detailed compilation of commands within mbs is given in Entry 10.
If one wants to observe the current acquisition, one must open a second terminal and establish another ssh-connection to R4l-41. The "rate" command will then show the incoming events on mbs (see attachment 4). If something went wrong you will see that the event-rate goes down. This might be an indication that the connection to medusa has crashed (see attachment 5). |
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Sat Jun 1 18:14:01 2024, Carsten, Analysis, DAQ and analysis directories
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DAQ1 (original):
-user atplaser
-runs on lxg1297
-go4 in ~/go4/229Th
-mbs in /esr/usr/atplaser/mbsrun/E0052/DAQ1
-data in lxg1297:/data.local2/229Th/
filenames follow the style 229ThDAQ1_nnnn.lmd (where nnnn is 4 digit integer number)
Data backup on WDBook lxg0155 local:
/media/stoe_exp/WDBook/E0052daq1 (/dev/sdc2)
Since the Go4 Code is still under development (clean up etc.), I still plan to submit regular updates, the last version before is always in ~go4/229Th
It is planned that all essential settings can be done via the automatically loaded script files SetParamters.C and SetConditions.C, so that no recompilation (and change of code) is required (work in progress).
Values in SetParamters.C and SetConditions.C have to be adjusted to the actual run.
DAQ2 (new / enhanced):
additional 25ps TDC, ADC and Vulom Scaler
-user stoe_exp
-runs on lxg0155
-go4 in ~/E0052/go4
-mbs in /esr/usr/atplaser/mbsrun/E0052/DAQ2
-data in lxg0155:/data.lcoal2/E0052/
filenames follow the style ThDAQ2_nnnn.lmd (where nnnn is 4 digit integer number)
Data backup on WDBook lxg1297 local:
/media/stoe_exp/WDBook/E0052daq2 (/dev/sdd2)
The following .scom in the directories will help to run the experiment
@startup in mbs -> Generic startup of all mbs tasks for data acquisition
@shutdown in mbs -> Ceans up everything before leaving mbs
@connectdisk -> connects to the rfio server on the data local disks.
or this, rawDispRFIO64, has to be started (locally __IN__ the data directory).
@openfile -> automatically opens a new file in the data local disks
@closefile -> closes the file
@disconndisk -> disconnects from the rfio server
Please note that the different path and file names are on purpose, so that they can be distinguished after the run. |
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Sat Jun 1 18:55:18 2024, Carsten, Analysis, Go4 Analysis Version for DAQ1 (atplaser)
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Small enhancements and minor corrections / bug fixes are made to the original version of the online GO$ for DAQ1.
Assignment of channel names corrected, condition names adapted to present DAQ
Potential pitfalls are commented in the code.
The old version is untouched in its old directory.
The new version is in directory ~/go4/229Th. This version should be used for DAQ1 !
Some minor changes will still be needed to be done.
Please comment changes in the code with date and name and write into Elog. |
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Mon Jun 10 11:59:12 2024, Ruijiu Chen, Analysis, The ion identification of spectrum recorded on 2022
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The simulated frequency is given in simulation_result.out. The yield is calculated by LISE file. The LISE file is attached here also. |
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Wed Jun 12 01:51:51 2024, RuiJiu, David, Analysis, ID
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The preliminary identification has been thoroughly checked using the RionID software. We have confirmed that the identification is accurate.
Attached can be found the simulation file with each of the expected ions, their revolutions frequencies in the 125th harmonic and expected yield from the LISE file attached.
Also attached are some figures from RionID that highlight the region of interest for the 124th and 125th harmonics. The center frequency of the 245 MHz resonator is closer to the 124th harmonic for 229Th+89 which is located at 244.769 MHz.
If necessary, we can slightly shift the resonator curve to higher frequencies to fine-tune the signal-to-noise ratio for 229Th+89. |
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Thu Jun 13 12:37:14 2024, Ruijiu Chen, David, Analysis, Lifetime of beam in center of mass is 193 s.
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Thu Jun 13 13:29:47 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 12 22:00- June 13 0:00
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Thu Jun 13 14:20:36 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 4:30:7:00
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Thu Jun 13 14:35:27 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 7:00~9:00
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Thu Jun 13 14:41:22 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 9:00~11:00
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Thu Jun 13 18:48:26 2024, Ruijiu Chen, David, Shahab, Yuri, Analysis, The ion identification of 229Th is correct.
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Harmonic: 124.0 , Bp: 7.796046 [Tm]
ion fre[Hz] yield [pps]
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237U+92 243732740.7822311819 8.6164e+03
237Np+92 243732858.1891748905 1.9672e+02
224Ac+87 243759120.6575988531 1.7025e+03
229Pa+89 243784072.1343108118 2.5529e+03
229Th+89 243784111.0000000000 3.3883e+03
234Pa+91 243807737.9699291289 2.4721e+03
234Np+91 243807852.4158236086 1.7745e+01
The strongest line is 229Th+89/229Pa+89. The yield and frequency of 229Pa+89 and 229Th+89 are very close to each other. We needed to
install Al target to suppress Pa as much as possible. Al gives a better ratio of h-like to he-like than Be. Two peaks at left
side are 237U+92/237Np+92 and 224Ac+87. One peak at right side is
234Pa+91/234Np+91.
Note added 2024-06-14 (Carsten): a) We will not produce Np, this is an artifact of Lise, b) relative intensities are for injection only. Line intensities for 237U/224Ac/234Pa are substantially lower after cooling/HF/deceleration. |
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Wed Jun 26 11:59:12 2024, Ruijiu, Shahab, Carsten, Analysis, Prepare plots for Thomas's presentation 6x
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data:
(env_OnlineDataAnalysisSystem) litv-exp@lxbk0497:/lustre/astrum/experiment_data/2024-05_E018/OnlineDataAnalysisSystem/data/iq/IQ_2024-06-
12_21-47-54$
The root file is at:
(env_OnlineDataAnalysisSystem) litv-exp@lxbk0497:/lustre/astrum/experiment_data/2024-05_E018/OnlineDataAnalysisSystem/data/iq/IQ_2024-06-
12_21-47-54$ root filtered_spectrum_670_750.root
The figure below shows the interface of the program "combine_injection". You can combine any tdms file with this program. To run this
program, you need to log in to the server /luster/astrum/, and activate the conda environment. Then type the command "combine_injection" at
the terminal. You will see the interface. |
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Wed Jun 5 14:17:36 2024, Carsten, Accelerator, Distance Cooler Detector
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Calculation from Helmut Weick (copied from E142)
Distance e-cooler to particle detectors chamber:
“This is half of ESR plus distance target - detector. This even is on the web page”
54.28 m + 21.64 m |
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Thu Jun 6 08:16:36 2024, Danyal, Accelerator, scraper info by Robert Boywitt
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attched is more info about the T-scrapers (E-cooler) by Robert Boywitt (Tel: 2067 or 3357) |
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Thu Jun 6 19:51:11 2024, Carsten, Accelerator, ESR crew left after persisting problems with ESR magnets
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No beam today.--. |
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