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  Bound beta decay experiment on Tl-205, Page 8 of 9  Not logged in ELOG logo
ID Date Authorup Category Subject
  86   Mon Mar 30 09:34:02 2020 TinoRunsRestart of second measurement with 206Pb81+ beam at I_cooler = 10 mA
Stopped Data recording for Restart of the measurement

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 09:28

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  5.7E6
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  87   Mon Mar 30 10:01:31 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 10:00

I_cooler = -01 mA
      
ESR particles:  2.8E5
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  88   Mon Mar 30 10:32:01 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 10:31

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  2.7E5
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  89   Mon Mar 30 10:57:43 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 10:57

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  2.7E5
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  91   Mon Mar 30 12:16:04 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 12:00

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  2.3E5
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  92   Mon Mar 30 12:33:04 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 12:30

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  2.8E5
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  93   Mon Mar 30 13:02:49 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 13:00

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  4.5E5
(Intensity rised @ around 12:52, without a new shot from SIS)
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  94   Mon Mar 30 13:31:58 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 


_______________________________________________________________________________

time: 13:30

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  4.0E5
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  97   Mon Mar 30 14:02:41 2020 TinoRunsSecond measurement with 206Pb81+ beam at I_cooler = 10 mA

I_cooler = 10 mA

beam: 206Pb81+
energy: 400 MeV/u

purpose: data for the measurement of half life of 206Pb81+ due to its interaction with electron cooler and residual gas

Detector position (CsISiPHOS): 60 mm
Detector position (MWPC):     -10 mm

run start at 09:28 , run file: run0272.lmd 
run stop at  14Ö23 , run file: run0272.lmd


_______________________________________________________________________________

time: 14:00

I_cooler = -01 mA

SIS particles: 3.1E8      
ESR particles:  4.2E5
        


NTCAp file:
SC_2020-03-30_09-28-14
IQ_2020-03-30_09-28-14
(saved in drive: p)

copy and repeat the above (below the line) every 30 minutes
  105   Tue Mar 31 00:47:18 2020 YuriRunsS2 slits 0/+35 mm, target bump +13 mm
Run start: 0276.lmd
  167   Mon Apr 6 14:17:54 2020 Yuri, ShahabRunsFRS valves
We saw reduction in ESR beam life. It turned out that FRS has opened valves and venting caused us reduction of the quality of vacuum in ESR leading to beam loss. We manged to closed GEE5VV so that now beam is stable somehow.


how could you guys!!!!

arrrrgggggggg!!!!!!!
Attachment 1: 2020-04-06_14-22-20-965.png
2020-04-06_14-22-20-965.png
  37   Sat Mar 28 15:07:40 2020 ruijiuDAQstart 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.
Start DAQ to record the ESR current in lmd file.
Nik is optimizing the gas jet target. So this file is still test run.
  44   Sun Mar 29 09:40:35 2020 ruijiuDAQrestart go4
go4 crush up. 
the problem is 
due to  mbs. 
restart mbs. 
see an error. 
restart again. 
the mbs and go4 
are working 
working. 
Attachment 1: IMG_20200329_093354.jpg
IMG_20200329_093354.jpg
  45   Sun Mar 29 09:57:26 2020 ruijiuDetectorsthe HV of charged particle detector
        MHV1     MHV2
ch1:1st Sipad  4th 
Sipad
ch2:2nd Sipad  6th 
Sipad
ch3:3rd Sipad  DSSD
ch4:4th Sipad  CsI
Attachment 1: IMG_20200329_095014.jpg
IMG_20200329_095014.jpg
  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 ruijiuDAQstart ntcap
IQ_2020-03-29_13-05-
56
SC_2020-03-29_13-05-
56
Attachment 1: IMG_20200329_130438.jpg
IMG_20200329_130438.jpg
  53   Sun Mar 29 14:01:45 2020 ruijiu beam position on DSSD
move the detector 1cm 
outside.from 60mm to 
70mm.
left direction is 
outside. right direction 
is 
inside(close to beam).
the spot is moving from 
left to right.
Attachment 1: IMG_20200329_140003.jpg
IMG_20200329_140003.jpg
  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 ruijiuAnalysisRatio between MPWC rate and DSSD rate
slit	Ratio	error
-1	18.64	0.4
-2	18.18	0.38
-3	20.85	0.5
-4	18.15	0.34
-5	17.44	0.31
-6	17.38	0.32
-7	17.82	0.32
-8	16.41	0.27
-9	18.51	0.37
Attachment 1: ratio.png
ratio.png
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