 Fri Mar 20 01:22:23 2020, Shahab, Runs, Setting for Gas target, 
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Setting for the machines. |
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Fri Mar 20 04:32:22 2020, Shahab, Runs, run entry - run046,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 04:31 , first file: run046_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 04:31:44
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 3 Hz
Xray_90: 33 Hz
Xray_145: 23 Hz
BaF_OR: 2463 Hz
Si voltage: 60.02 V
Si leakage current: 3.93 uA
SIS particles before: 2e9
ESR particles at injection: 5e7
ESR particles after decel.: 2e6
Target ON density: 1.8e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 05:03:03 2020, Shahab, Runs, run entry - run046,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 04:31 , first file: run046_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 05:00
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 3 Hz
Xray_90: 28 Hz
Xray_145: 24 Hz
BaF_OR: 2452 Hz
Si voltage: 60.02 V
Si leakage current: 3.93 uA
SIS particles before: 2e9
ESR particles at injection: 5e7
ESR particles after decel.: 2e6
Target ON density: 1.8e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 05:32:44 2020, Shahab, Runs, run entry - run047,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 05:30 , first file: run047_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 05:30
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 2 Hz
Xray_90: 27 Hz
Xray_145: 20 Hz
BaF_OR: 2379 Hz
Si voltage: 60.02 V
Si leakage current: 3.93 uA
SIS particles before: 2e9
ESR particles at injection: 5e7
ESR particles after decel.: 5e6
Target ON density: 1.97e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 06:00:26 2020, Shahab, Runs, run entry - run047,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 05:30 , first file: run047_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 06:00
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 3 Hz
Xray_90: 33 Hz
Xray_145: 23 Hz
BaF_OR: 2512 Hz
Si voltage: 60.02 V
Si leakage current: 3.94 uA
SIS particles before: 2e9
ESR particles at injection: 5.3e7
ESR particles after decel.: 5.8e6
Target ON density: 1.97e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 06:34:40 2020, Shahab, Runs, run entry - run048,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 06:33 , first file: run048_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 06:36
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 0 Hz
Xray_90: 39 Hz
Xray_145: 16 Hz
BaF_OR: 2590 Hz
Si voltage: 60.02 V
Si leakage current: 4.0 uA
SIS particles before: 2e9
ESR particles at injection: 5.8e7
ESR particles after decel.: 5.2e6
Target ON density: 1.55e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 07:01:06 2020, Shahab, Runs, run entry - run048,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 06:33 , first file: run048_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 07:00
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 1 Hz
Xray_90: 39 Hz
Xray_145: 38 Hz
BaF_OR: 2498 Hz
Si voltage: 60.02 V
Si leakage current: 4.03 uA
SIS particles before: 2e9
ESR particles at injection: 5.8e7
ESR particles after decel.: 5.4e6
Target ON density: 1.57e13
copy and repeat the above (below the line) every 30 minutes |
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Sat Mar 21 18:13:22 2020, Shahab, General, rough comparison gas target off and on,
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rough comparison of life time at 10 MeV/u when target off with on. more noise in background means weaker signal. |
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Sun Mar 22 12:50:00 2020, Shahab, Runs, Life time of 10 MeV/u Tail of 118-Te-52+,
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The life time of 10 MeV/u Tail of cycle 118-Te-52+ was analyzed using Schottky peak intensity. Schottky signal was taken from the parallel plate Schottky monitor at using the:
Tektronix RSA5103B analyzer parameters:
Frequency = 39.8380 MHz
span = 50 kHz
RBW = 100 Hz
AcqBW = 78.12 kHz
The peak intensity is integrated power of the resolution bandwidth.
Trigger was set to machine 12, same as gas target "on" signal. Each file contains 40 seconds of recorded signal. Spectra were calculated using sensitive multitaper method with additional averaging of every 10 time frames.
After evaluation of several Schottky spectra, except from some fluctuations, there was no significant change in beam lifetime with or without gas target. They are in the same order of magnitude, that is, it seems that target interaction is not so prominent compared to the rest of the ring. with a xenon target the situation would be much different.
Attached are some plots. Also here are the results of the analyzed files in text form:
Target off: average 9.21 sec
118Te52+_-2020.03.21.08.35.40.854.tiq t= 9.24733015363724
118Te52+_-2020.03.21.08.36.50.173.tiq t= 8.070302067046537
118Te52+_-2020.03.21.08.37.58.916.tiq t= 9.309208734357618
118Te52+_-2020.03.21.08.39.07.690.tiq t= 7.94474492655749
118Te52+_-2020.03.21.08.40.16.459.tiq t= 11.510487780556794
Target on: average 10.9 secs
118Te52+_-2020.03.21.08.28.48.246.tiq t= 9.80012584127354
118Te52+_-2020.03.21.08.29.56.985.tiq t= 11.751070659928155
118Te52+_-2020.03.21.08.31.05.750.tiq t= 10.719205394679026
118Te52+_-2020.03.21.08.32.14.509.tiq t= 13.722763765411063
118Te52+_-2020.03.21.08.33.23.269.tiq t= 8.513007281444073 |
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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
_______________________________________________________________________________
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 00:36:51 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
_______________________________________________________________________________
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. |