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  proton-capture on 118Te, Page 26 of 29  Not logged in ELOG logo
ID Date Author Category Subject Yeardown
  208   Sun Mar 22 23:19:23 2020 MichaelGeneralESR Vacuum readings 
Attachment 1: ESR_Vakuum2020-03-22-2318.PNG
ESR_Vakuum2020-03-22-2318.PNG
  209   Sun Mar 22 23:59:12 2020 ShahabRunsrun entry - run091 
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
  210   Mon Mar 23 00:13:25 2020 LaszloGeneralSIS and ESR beam currents 
Attachment 1: 2020-03-23_00-09-48-737.png
2020-03-23_00-09-48-737.png
Attachment 2: 2020-03-23_00-21-43-581.png
2020-03-23_00-21-43-581.png
  211   Mon Mar 23 00:36:51 2020 ShahabRunsrun entry - run091 
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
  212   Mon Mar 23 00:39:52 2020 ShahabGeneralRamping cycle picture and data 
Complete ramping cycle recorded from Oscilloscope Tektronix MSOX2024A.
 Stored as XLS file.
Attachment 1: 2020-03-23_machine_cycle_ramping.bmp
Attachment 2: 2020-03-23_machine_cycle_ramping.xlsx
  213   Mon Mar 23 01:17:26 2020 ShahabGeneralLife time measurements using Schottky 
Did Schottky measurements using 5 shots with and without gas target each
restarting the DAQ
  214   Mon Mar 23 01:18:16 2020 ShahabRunsrun entry - run092 
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
  215   Mon Mar 23 01:53:59 2020 ShahabRunsEmpty shots in ESR 
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.
  216   Mon Mar 23 03:04:56 2020 ShahabRunsrun entry - run093 
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
  217   Mon Mar 23 03:07:11 2020 ShahabRunsSIS Kicker problem 
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.
Attachment 1: IMG_20200323_021051.jpg
IMG_20200323_021051.jpg
  218   Mon Mar 23 03:38:01 2020 ShahabRunsrun entry - run093 
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
  219   Mon Mar 23 03:53:41 2020 ShahabRunsReduced intensity inspite of faulty kicker 
SIS Kicker is still faulty. but we managed to reduce again the intensity to around 2e6 particles in ring to reduce scattering on scraper.
  220   Mon Mar 23 03:58:25 2020 ShahabGeneralKicker guy arrived 
Kicker Guy (U. Blell) arrived in order to fix modules.
  221   Mon Mar 23 04:08:12 2020 ShahabRunsrun 93 stopped 
run 93 which was during faulty kicker was stopped so that the kicker module can be repaired.
  222   Mon Mar 23 05:55:24 2020 ShahabRunsKicker problem not solved yet 
no solution to kicker problem. 
  223   Mon Mar 23 05:59:01 2020 ShahabRunsSIS Kicker  
SIS Kicker seems to be working properly. but we have to see how regularly it will work.
  224   Mon Mar 23 06:20:06 2020 ShahabRunsPosition on scintillator corrected sitll no beam in ESR 
position on the scintillator was corrected by the OPs to center, but beam is still not in ESR.
Attachment 1: IMG_20200323_061337.jpg
IMG_20200323_061337.jpg
  225   Mon Mar 23 06:40:17 2020 ShahabRunsno beam in SIS nor in ESR 
manic Monday morning.
  226   Mon Mar 23 06:49:46 2020 ShahabRunsESR kicker also has some problems 
  227   Mon Mar 23 07:56:51 2020 LaszloGeneralYuri made magick and we operate again 
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"
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