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Bound beta decay experiment on Tl-205, Page 9 of 9
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Thu Jan 1 01:00:00 1970
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ID
Date
Author
Category
Subject
Text
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
98
Mon Mar 30 14:24:46 2020
ruijiu
DAQ
stop taking data.
1. stop run0272.lmd.
2. stop NTCAP.
NTCAp file:
101
Mon Mar 30 16:25:05 2020
ruijiu
Detectors
turn down the HV
turn down the hv and pull out the detector.
102
Mon Mar 30 16:37:53 2020
ruijiu
Analysis
106
Tue Mar 31 15:30:43 2020
ruijiu
Analysis
The beam position on DSSD with different conditions on on the dEE spectrum
I analyzed the first measurement with 206Pb81+
beam, run 250-267.
6x
111
Wed Apr 1 01:02:24 2020
ruijiu
Detectors
the detector cable is disconnected.
112
Wed Apr 1 01:05:36 2020
ruijiu
Detectors
detector position fixed at 60 mm
The detector cable was disconnected . We entered
and reconnected the cable.
120
Thu Apr 2 12:52:25 2020
ruijiu
General
setup 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 data
2020.4.8 12:00Started copying
data。
2020.4.9 11:52 Copied 6.3TB
172
Fri Apr 17 18:27:34 2020
ruijiu
Analysis
backup data
1.connect USB harddisk to computer lxg1254
and copy data to sever.
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.
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
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 :
41
Sat Mar 28 16:12:25 2020
ruijiu, ragan
DAQ
enter ESR and turn on the HV crate.
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+
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