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  Bound beta decay experiment on Tl-205, Page 9 of 9  Not logged in ELOG logo
ID Date Authorup Category Subject Text Attachments
  58   Sun Mar 29 21:02:43 2020 ruijiuAnalysisdecay line of 205Tl beamdecay line of 205Tl beam with Ar gas jet target
on and S6 slit at -8mm
Ar gas density~1e12 atoms/cm2
 main_s6_neg8_202003292059.pngmain_s6_neg8_202003292059.root 
  60   Sun Mar 29 21:39:27 2020 ruijiuAnalysisIonization cross section and capture cross section for h-206Pb + ArIonization cross section = 1320 barn.
Capture cross section = 557+137+44.5=735.5.
sigma_Ion/sigma_cap=1.79
 202003292141.png 
  90   Mon Mar 30 12:12:25 2020 ruijiuGeneralInstruction of NTCAP for shift personTo start a new run with NTCap, we need to
retart NTCAP. 
1. Stop labview program. 
 Instruction_of_NTCAP_for_shift_person.png 
  95   Mon Mar 30 13:40:57 2020 ruijiuDetectorsHV of Inner detector   IMG_20200330_133909.jpg 
  96   Mon Mar 30 13:41:20 2020 ruijiuDetectorsHV of Inner detector   IMG_20200330_133909.jpg 
  98   Mon Mar 30 14:24:46 2020 ruijiuDAQstop taking data.1. stop run0272.lmd.
2. stop NTCAP. 
  NTCAp file:
  
  101   Mon Mar 30 16:25:05 2020 ruijiuDetectorsturn down the HVturn down the hv and pull out the detector.
 
  
  102   Mon Mar 30 16:37:53 2020 ruijiuAnalysis     
  106   Tue Mar 31 15:30:43 2020 ruijiuAnalysisThe beam position on DSSD with different conditions on on the dEE spectrumI analyzed the first measurement with 206Pb81+
beam, run 250-267. 
 6x 
  111   Wed Apr 1 01:02:24 2020 ruijiuDetectorsthe detector cable is disconnected.    
  112   Wed Apr 1 01:05:36 2020 ruijiuDetectorsdetector position fixed at 60 mmThe detector cable was disconnected . We entered
and reconnected the cable.
 VID_20200401_010416.mp4 
  120   Thu Apr 2 12:52:25 2020 ruijiuGeneralsetup FRS with 2 g/cm2 degrader.Yuri sets up FRS with 2 g/cm2 degrader (previous
one is 1 g/cm2). The ESR is not changed.
The contamination should be less now.
  
  171   Thu Apr 9 11:47:28 2020 ruijiu backup data2020.4.8  12:00Started copying 
data。
2020.4.9    11:52 Copied 6.3TB 
 IMG_20200409_113155.jpg 
  172   Fri Apr 17 18:27:34 2020 ruijiuAnalysisbackup data1.connect USB harddisk  to computer lxg1254
and  copy data to sever.
 IMG_20200417_162202.jpg 
  100   Mon Mar 30 15:03:58 2020 ruijiu Tino, Yuri, Lasoro, Nik and UliDetectorsthe gas bottle is empty.The gas bottle was empty. Tino replaced 
the previous old bottle with 50 bar gas left.
 IMG_20200330_152735_mh1585575780057.jpg 
  99   Mon Mar 30 14:48:02 2020 ruijiu and TinoDetectorsThe leakcurrent of SiPad is over the setting limit.Because the 
leakcurrent of 
6 Sipads is 
 Screenshot_20200330-145551.jpgScreenshot_20200330-145544.jpgIMG_20200330_144915.jpg 
  15   Tue Feb 25 15:48:31 2020 ruijiu chenDAQImportant folders of e121 eperiments:1. slow control:
1.1. program file:
litv-exp@ringpi:~/epics/mrcc_ioc/db $ 
  
  16   Tue Feb 25 15:49:58 2020 ruijiu chenDAQchanging scaling factor.How to change scaling factor?
The parameters is in f_user.c file:
1. open the f_user.C with emacs :
  
  41   Sat Mar 28 16:12:25 2020 ruijiu, raganDAQenter ESR and turn on the HV crate.    
  80   Mon Mar 30 07:02:15 2020 tinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 20 mA I_cooler = 20 mA

beam: 206Pb81+
  
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