 Sun Mar 22 23:19:23 2020, Michael, General, ESR Vacuum readings, 
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Sun Mar 22 23:59:12 2020, Shahab, Runs, run entry - run091,
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Taking data again with primary beam.
open file : run090
beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -27 mm
GE01DD1IG position (Scraper): 9 mm
run start at 23:07:10, first file: run091_0001.lmd
run stop at , last file: run_0xxx.lmd
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time: 23:57:53
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 5 Hz
Xray_90: 102 Hz
Xray_145: 35 Hz
BaF_OR: ---
Si voltage: 60.02 V
Si leakage current: 4.23 uA
SIS particles before: 4.6e8
ESR current at injection:
ESR particles after decel.: 1.12e7
Target ON density: 5e13
copy and repeat the above (below the line) every 30 minutes |
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Mon Mar 23 00:13:25 2020, Laszlo, General, SIS and ESR beam currents,
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Mon Mar 23 00:36:51 2020, Shahab, Runs, run entry - run091,
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Taking data again with primary beam.
open file : run091
beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -27 mm
GE01DD1IG position (Scraper): 9 mm
run start at 23:07:10, first file: run091_0001.lmd
run stop at 00:59:55, last file: run_0xxx.lmd
_______________________________________________________________________________
time: 00:36
ON Rates
Si_X: 3 Hz
Si_Y: 3 Hz
Xray_35: 1 Hz
Xray_90: 57 Hz
Xray_145: 16 Hz
BaF_OR: ---
Si voltage: 60.02 V
Si leakage current: 4.25 uA
SIS particles before: 7e8
ESR current at injection:
ESR particles after decel.: 8.5e6
Target ON density: 5e13
copy and repeat the above (below the line) every 30 minutes |
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Mon Mar 23 00:39:52 2020, Shahab, General, Ramping cycle picture and data,
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Complete ramping cycle recorded from Oscilloscope Tektronix MSOX2024A.
Stored as XLS file. |
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Mon Mar 23 01:17:26 2020, Shahab, General, Life time measurements using Schottky,
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Did Schottky measurements using 5 shots with and without gas target each
restarting the DAQ |
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Mon Mar 23 01:18:16 2020, Shahab, Runs, run entry - run092,
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Taking data again with primary beam.
open file : run092
beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -27 mm
GE01DD1IG position (Scraper): 9 mm
run start at 23:07:10, first file: run092_0001.lmd
run stop at 00:59:55, last file: run_0xxx.lmd
_______________________________________________________________________________
time: 01:16
ON Rates
Si_X: 2 Hz
Si_Y: 2 Hz
Xray_35: 0 Hz
Xray_90: 92 Hz
Xray_145: 36 Hz
BaF_OR: ---
Si voltage: 60.02 V
Si leakage current: 4.12 uA
SIS particles before: 7.6e8
ESR current at injection:
ESR particles after decel.: 2.3e6
Target ON density: 5.55e13
copy and repeat the above (below the line) every 30 minutes |
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Mon Mar 23 01:53:59 2020, Shahab, Runs, Empty shots in ESR,
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since about 01:40 AM, there is no beam in ESR. .
stopped data acquisition
OPs are working on it. After searching, OPs decided that something is wrong with ESR. |
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Mon Mar 23 03:04:56 2020, Shahab, Runs, run entry - run093,
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RUN 93 is with faulty SIS kicker module. Let's see what we can get. waiting for SIS kicker on-call duty (rufbereitschaft) to come.
open file : run093
beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -27 mm
GE01DD1IG position (Scraper): 9 mm
run start at 03:04, first file: run093_0001.lmd
run stop at 00:59:55, last file: run_0xxx.lmd
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time: 03:04
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 3 Hz
Xray_90: 34 Hz
Xray_145: 18 Hz
BaF_OR: ---
Si voltage: 60.02 V
Si leakage current: 4.18 uA
SIS particles before: 4.9e8
ESR current at injection:
ESR particles after decel.: 8.7e6
Target ON density: 5.55e13
copy and repeat the above (below the line) every 30 minutes |
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Mon Mar 23 03:07:11 2020, Shahab, Runs, SIS Kicker problem,
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After calling ESR on-call duty (M. Steck) he confirmed that the ESR is fine and suspected the SIS kicker modules.
SIS operators then checked and could confirm that module 5 is out of order and module 4 sometimes works sometimes not.
They asked me I said better to run as good as possible with lower number of modules until the end of experiment, then later change the module. because otherwise changing module might take time.
they tried to increase the kick angle to check if they can move the spot to the center.
some shots went well but mostly failed.
they decided to call the Rufbereitschaft.
meanwhile I started the run number 93 to at least collect some data from some of the correct shots.
if counts are too high I will stop it.
let's see. |
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Mon Mar 23 03:38:01 2020, Shahab, Runs, run entry - run093,
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RUN 93 is with faulty SIS kicker module. Let's see what we can get. waiting for SIS kicker on-call duty (rufbereitschaft) to come.
open file : run093
beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -27 mm
GE01DD1IG position (Scraper): 9 mm
run start at 03:04, first file: run093_0001.lmd
run stop at 00:59:55, last file: run_0xxx.lmd
_______________________________________________________________________________
time: 03:36
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 1 Hz
Xray_90: 45 Hz
Xray_145: 19 Hz
BaF_OR: ---
Si voltage: 60.02 V
Si leakage current: 4.29 uA
SIS particles before: 5.6e8
ESR current at injection:
ESR particles after decel.: 8.64e6
Target ON density: 4.35e13
copy and repeat the above (below the line) every 30 minutes |
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Mon Mar 23 03:53:41 2020, Shahab, Runs, Reduced intensity inspite of faulty kicker,
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SIS Kicker is still faulty. but we managed to reduce again the intensity to around 2e6 particles in ring to reduce scattering on scraper. |
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Mon Mar 23 03:58:25 2020, Shahab, General, Kicker guy arrived,
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Kicker Guy (U. Blell) arrived in order to fix modules. |
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Mon Mar 23 04:08:12 2020, Shahab, Runs, run 93 stopped,
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run 93 which was during faulty kicker was stopped so that the kicker module can be repaired. |
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Mon Mar 23 05:55:24 2020, Shahab, Runs, Kicker problem not solved yet,
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no solution to kicker problem. |
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Mon Mar 23 05:59:01 2020, Shahab, Runs, SIS Kicker ,
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SIS Kicker seems to be working properly. but we have to see how regularly it will work. |
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Mon Mar 23 06:20:06 2020, Shahab, Runs, Position on scintillator corrected sitll no beam in ESR,
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position on the scintillator was corrected by the OPs to center, but beam is still not in ESR. |
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Mon Mar 23 06:40:17 2020, Shahab, Runs, no beam in SIS nor in ESR,
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manic Monday morning. |
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Mon Mar 23 06:49:46 2020, Shahab, Runs, ESR kicker also has some problems,
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Mon Mar 23 07:56:51 2020, Laszlo, General, Yuri made magick and we operate again,
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DSSSD was moved out (HV switched off)
also the scraper was mistakenly moved.
Now we move everything back to its original position
We leave the scraper still in the "scraping position" in order to collect more data.
Soon we should switch to "without sctraper mode" |