 Sun Mar 29 21:02:43 2020, ruijiu, Analysis, decay line of 205Tl beam 
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decay line of 205Tl beam with Ar gas jet target on and S6 slit at -8mm
Ar gas density~1e12 atoms/cm2 |
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Sun Mar 29 21:39:27 2020, ruijiu, Analysis, Ionization cross section and capture cross section for h-206Pb + Ar
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Ionization cross section = 1320 barn.
Capture cross section = 557+137+44.5=735.5.
sigma_Ion/sigma_cap=1.79 |
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Mon Mar 30 12:12:25 2020, ruijiu, General, Instruction of NTCAP for shift person
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To start a new run with NTCap, we need to retart NTCAP.
1. Stop labview program.
2. Start labview program and start a new run. |
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Mon Mar 30 13:40:57 2020, ruijiu, Detectors, HV of Inner detector
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Mon Mar 30 13:41:20 2020, ruijiu, Detectors, HV of Inner detector
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Mon Mar 30 14:24:46 2020, ruijiu, DAQ, stop taking data.
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1. stop run0272.lmd.
2. stop NTCAP.
NTCAp file:
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Mon Mar 30 16:25:05 2020, ruijiu, Detectors, turn down the HV
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turn down the hv and pull out the detector.
suggest by
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Mon Mar 30 16:37:53 2020, ruijiu, Analysis,
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Tue Mar 31 15:30:43 2020, ruijiu, Analysis, The beam position on DSSD with different conditions on on the dEE spectrum 6x
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| I analyzed the first measurement with 206Pb81+ beam, run 250-267. |
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Wed Apr 1 01:02:24 2020, ruijiu, Detectors, the detector cable is disconnected.
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Wed Apr 1 01:05:36 2020, ruijiu, Detectors, detector position fixed at 60 mm
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| The detector cable was disconnected . We entered and reconnected the cable. |
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Thu Apr 2 12:52:25 2020, ruijiu, General, setup FRS with 2 g/cm2 degrader.
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| 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. |
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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
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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-
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Mon Mar 30 15:03:58 2020, ruijiu Tino, Yuri, Lasoro, Nik and Uli, Detectors, the gas bottle is empty.
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The gas bottle was empty. Tino replaced
the previous old bottle with 50 bar gas left.
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Mon Mar 30 14:48:02 2020, ruijiu and Tino, Detectors, The leakcurrent of SiPad is over the setting limit.
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Because the
leakcurrent of
6 Sipads is
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Tue Feb 25 15:48:31 2020, ruijiu chen, DAQ, Important folders of e121 eperiments:
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1. slow control:
1.1. program file:
litv-exp@ringpi:~/epics/mrcc_ioc/db $
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Tue Feb 25 15:49:58 2020, ruijiu chen, DAQ, changing scaling factor.
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How to change scaling factor?
The parameters is in f_user.c file:
1. open the f_user.C with emacs :
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Sat Mar 28 16:12:25 2020, ruijiu, ragan, DAQ, enter ESR and turn on the HV crate.
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Mon Mar 30 07:02:15 2020, tino, Runs, Second measurement with 206Pb81+ beam at I_cooler = 20 mA
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I_cooler = 20 mA
beam: 206Pb81+
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