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Bound beta decay experiment on Tl-205, Page 1 of 9  Not logged in

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Full | Summary | Threaded     -- All entries -- Last day Last 3 Days Last week Last month Last 3 Months Last 6 Months Last Year -- Category -- Analysis Calibration DAQ General Collaboration Runs Detectors SlowControl  180 Entries

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ID Date Author Category Subject Text   80   Mon Mar 30 07:02:15 2020 tino Runs Second measurement with 206Pb81+ beam at I_cooler = 20 mA I_cooler = 20 mA beam: 206Pb81+      41   Sat Mar 28 16:12:25 2020 ruijiu, ragan DAQ enter ESR and turn on the HV crate.        15   Tue Feb 25 15:48:31 2020 ruijiu chen DAQ Important 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 chen DAQ changing scaling factor. How to change scaling factor? The parameters is in f_user.c file: 1. open the f_user.C with emacs :      99   Mon Mar 30 14:48:02 2020 ruijiu and Tino Detectors The leakcurrent of SiPad is over the setting limit. Because the  leakcurrent of  6 Sipads is       100   Mon Mar 30 15:03:58 2020 ruijiu Tino, Yuri, Lasoro, Nik and Uli Detectors the gas bottle is empty. The gas bottle was empty. Tino replaced  the previous old bottle with 50 bar gas left.      37   Sat Mar 28 15:07:40 2020 ruijiu DAQ start run        38   Sat Mar 28 15:19:23 2020 ruijiu   start run e121_run_0236.lmd store 206Pb81+ beam inside ESR and measure its halflife.  The HV of detector is off.      44   Sun Mar 29 09:40:35 2020 ruijiu DAQ restart go4 go4 crush up.  the problem is  due to  mbs.       45   Sun Mar 29 09:57:26 2020 ruijiu Detectors the HV of charged particle detector         MHV1     MHV2 ch1:1st Sipad  4th  Sipad      46   Sun Mar 29 10:09:14 2020 ruijiu   start run e121_run_0237.lmd Sergey and Yuri are tuning Tl beam. The particle number in ers is about 1e4. I(SIS)=5e8 run stop: after few minutes (garbage data)      51   Sun Mar 29 13:05:36 2020 ruijiu DAQ start ntcap IQ_2020-03-29_13-05- 56 SC_2020-03-29_13-05-      53   Sun Mar 29 14:01:45 2020 ruijiu   beam position on DSSD move the detector 1cm  outside.from 60mm to  70mm.      54   Sun Mar 29 14:29:13 2020 ruijiu   e121_run_00240.lmd s6 positon at 50mm.      55   Sun Mar 29 18:41:31 2020 ruijiu Analysis Ratio between MPWC rate and DSSD rate slit Ratio error -1 18.64 0.4 -2 18.18 0.38      58   Sun Mar 29 21:02:43 2020 ruijiu Analysis decay line of 205Tl beam decay line of 205Tl beam with Ar gas jet target on and S6 slit at -8mm Ar gas density~1e12 atoms/cm2      60   Sun Mar 29 21:39:27 2020 ruijiu Analysis Ionization cross section and capture cross section for h-206Pb + Ar Ionization cross section = 1320 barn. Capture cross section = 557+137+44.5=735.5. sigma_Ion/sigma_cap=1.79      90   Mon Mar 30 12:12:25 2020 ruijiu General Instruction of NTCAP for shift person To start a new run with NTCap, we need to retart NTCAP.  1. Stop labview program.       95   Mon Mar 30 13:40:57 2020 ruijiu Detectors HV of Inner detector        96   Mon Mar 30 13:41:20 2020 ruijiu Detectors HV of Inner detector

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