 Mon Apr 6 05:43:50 2020, Ragan, Laszlo, Nikos, Runs, One and a half hour measurement (S2: 0/35 mm and S6: -20/7 mm) 
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 1.5 hr
S2: 0/35 mm
s6: -20/7
purpose: data with TARGET ON
Detector position (CsISiPHOS): out of the ring
Detector position (MWPC): -60 mm
run start at 20:21, run0540.lmd
file running: 0558.lmd
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time when accumulation starts: 05:41
time when storage starts: 06:19
time when storage ends: 07:49
I_cooler during storage time: -1 mA (20 mA)
I_cooler = 179 mA
I_SIS: 1.75e9
ESR particles after stacking: 2.3e6 (offset 5e5)
Number of stackings: 100
Target ON density: 4.36e12
Target on time for measurement: 10 mins (by event mode)
time spend at manipulation 13 : 3 mins
(i.e. time for which electron cooler is on after gas jet)
NTCAp file:
SC_2020-04-06_00-59-46
\IQ_2020-04-06_00-59-38
IQ rate: 8 MS/s
(saved in drive : O)
copy and repeat the above (below the line) for every storage time measurement/ |
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Mon Apr 6 08:37:02 2020, Ragan, Shahab, Pierre-Michel, Runs, 10 hour measurement (S2: 0/35 mm and S6: -20/7 mm) 8x
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beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 10 hr
S2: 0/35 mm
s6: -20/7
purpose: data with TARGET ON
Detector position (CsISiPHOS): out of the ring
Detector position (MWPC): -60 mm
run start at 20:21, run0540.lmd
file running: 0558.lmd
_______________________________________________________________________________
time when accumulation starts: 08:21
time when storage starts: 09:27
time when storage ends: 19:27
I_cooler during storage time: -1 mA (20 mA)
I_cooler = 180 mA
I_SIS: 1.8e9
ESR particles after stacking: 3.1e6 (offset 4e5)
Number of stackings: 200
Target ON density: 4.15e12
Target on time for measurement: 10 mins (by event mode)
time spend at manipulation 13 : 10 mins
(i.e. time for which electron cooler is on after gas jet)
I_ESR (10:34): 2.78e6
I_ESR (11:07): 2.53e6
I_ESR (12:07): 2.2e6
I_ESR (13:43): 1.7e6
I_ESR (14:00): 1.6E6
I_ESR (14:43): 1.5e6
I_ESR (15:24): 1.43e6
I_ESR (16:19): 1.3e6
I_ESR (17:03): I.IIIeVI
I_ESR (18:20): 1.15e6 (frozen screen)
I_ESR (18:50): 9.5e5
I_ESR (19:27): 8.5e5
NTCAp file:
SC_2020-04-06_00-59-46
\IQ_2020-04-06_00-59-38
IQ rate: 8 MS/s
(saved in drive : O)
copy and repeat the above (below the line) for every storage time measurement/ |
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Mon Apr 6 09:34:58 2020, Shahab, Runs, Pictures from one and a half hour measurement
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cheers! |
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Mon Apr 6 14:17:54 2020, Yuri, Shahab, Runs, FRS valves
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We saw reduction in ESR beam life. It turned out that FRS has opened valves and venting caused us reduction of the quality of vacuum in ESR leading to beam loss. We manged to closed GEE5VV so that now beam is stable somehow.
how could you guys!!!!
arrrrgggggggg!!!!!!! |
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Mon Apr 6 14:57:04 2020, Shahab, Runs, cooler down
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cooler component GECEBG2T again had to be reset. |
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Mon Apr 6 20:03:50 2020, Ragan, General, Experiment finished ))
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E121 experiment is finished with the last 10 hours measurement at 19:47 ))
Many thanks to everyone for there significant contributions )) |
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Thu Apr 9 11:16:35 2020, Ragan, General, Measurements done in the experiment
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Thu Apr 9 11:47:28 2020, ruijiu, , backup data
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2020.4.8 12:00Started copying
data。
2020.4.9 11:52 Copied 6.3TB
data. The copy speed is 65-67MB/s.
2020.4.15 Bring the two USB hard disk to my office and connect them to lxg1298 computer.
Send email |
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Fri Apr 17 18:27:34 2020, ruijiu, Analysis, backup data
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1.connect USB harddisk to computer lxg1254 and copy data to sever.
sync -rtmv --progress --checkSUD /media/sdgl/data/ litv-exp@sbk0l9:/lustre/ap/litv-exp/2020-
04-14 e121_rchen/NTCAP/hd1
2020.05.02 08:06 copied 11.88 TB to server. 1.8TB rest on hard disk. |
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Mon Apr 20 11:17:18 2020, Ragan, General, Logbook
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Wed Aug 5 17:19:16 2020, Rui-Jiu Chen, Analysis, Data structure
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Thu Oct 1 22:20:03 2020, Jan, DAQ, final unpacker config
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We identified an issue with randomly missing adc channels in all lmd-files before run 0273.
This led to errors in the unpacking process.
This issue is solved with the new config and mapping for the unpacker.
The respective files are attached here.
The unpacker is ready to use in /u/litv-exp/unpacker/unpackexps/E121
The adc issue is also understood. We deactivated the internal adc thresholds during the experiment, because we encountered the very same unpacker errors. This solved the problem for all later runs, but we forgot to think about a solution for the earlier runs.
Mea culpa.
Jan |
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Mon Nov 2 16:45:55 2020, Jan, DAQ, f_user & mbslog
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Attached is the f_user.c and the mbslog.l files.
The readout function is for the following setup:
3x ADC CAEN V785
1x SCA CAEN V830
1x TDC CAEN V1190
1x Vulom TRB5 (triggerbox)
1x Vulom4b PEV (priority encoder)
1x TRIVA7
1x RIO4 R4L-47 |
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Thu Nov 5 15:13:43 2020, Jan, Analysis, root script example
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Attached is an example root script/macro that shows how to use scripts for analysis.
Usage:
1. change INPUT and OUTPUT preprocessor variables in e121_analysis.c pointing to your desired input and output root-files.
2. open root and type: root [1] .L e121_analysis.C++
root [2] run() 3. check plots popping up and output files
Hints:
in e121_analysis.C use #include "e121_raw.h" for the original channel names/mapping (e.g. ADC1_1,...)
and use#include "e121_mapped.h" for named channels (e.g. e_csi[0] or e_dssd_top) |
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Thu Nov 19 09:14:40 2020, Jan, Detectors, remote MSCF settings for CsISiPHOS
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Attached is a list of all set values for the 5 MSCF shaper modules.
This was done prior to run0251, which served as a final benchmark for those settings.
See: https://elog.gsi.de/esr/E121/62
And https://elog.gsi.de/esr/E121/104
The det. to MSCF assignment is the following:
MSCF 1: Si-pad 1 + 2 p-side/strips (ch. 1-7 + ch. 9-15)
MSCF 2: Si-pad 3 + 4 p-side/strips (ch. 1-7 + ch. 9-15)
MSCF 3: Si-pad 5 p-side/strips (ch. 1-7)
MSCF 4: Si-pad 6 p-side/strips (ch. 1-7)
MSCF 5: DSSD (ch. 1 - 4); CsI (ch. 7 & 8); Si-pad n-sides (ch. 11 - 16)
Note that only the pre-amplification stage of the MSI-8 amplifiers were used for all channels. |
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Tue Dec 8 15:47:07 2020, Jan, Detectors, manual preamp & shaper settings for CsISiPhos
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attached is a document showing fotos of all involved amplifiers in the chain to document the manual settings active during the experiment.
Summary:
Si-pad n-sides [MSI-8 (1)] were set to 5 GeV (expected E-deposition ~2 GeV)
Si-pad p-sides [MPR-32 (1 & 2)] were set to 1 GeV (expected E-deposition ~2 GeV)
DSSD channels [MSI-8 (2)] were set to 5 GeV (expected E-deposition ~1.2 GeV)
CsI channels [MSI-8 (2)] were set to 4 GeV (expected E-deposition 46 GeV)
It seems we got clipped signals from the Si-pad p-sides, because the MPR-32 were saturated due to a wrong gain setting.
This might explain, why there was not real influence on the spectra when adjusting MSCF settings for those channels.
I cannot comment on the CsI gain setting, because i don't know whether the given GeV-range by MesyTec directly applies for CsI & photodiode.
However, for DSSD and Si-pad n-sides the settings look okay. |
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Tue Dec 15 09:25:41 2020, Jan, DAQ, SiCsIPhos signal/amplitude reconstruction
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Mon Mar 29 16:31:09 2021, Pierre-Michel, DAQ, cross section
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(1.393*^-8 + 3.18*^-13 + 4.707*^-8)/4.707*^-8 = 1.29595 |
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Sun May 30 12:09:00 2021, Ragan, General, NTCAP
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Attached is the info given by Carsten.
The instructions to operate NTCAP are given on https://wiki.gsi.de/ESR_EXP/ManualOfNTCAP |
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Wed Aug 25 15:13:41 2021, Jan, DAQ, SC13 clock frequency
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The frequency of the clock used as reference in scaler channel 13 has been measured precisely.
In contrast to what was expected (1.5MHz precisely), it is:
f_ref = 1.5625(5) MHz |