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ID Date Author Categoryup Subject Text Attachments
  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 
  107   Tue Mar 31 20:32:05 2020 RaganGeneral203Tl80+ 200Hg79+ 205Tl81+Below in the schottky spectrum, on left is
203Tl80+ contamination, in middel is 200Hg79+
contamination and on right most is 205Tl81+.
 85AD7203-736C-4531-BA80-D045CC690BED.jpeg 
  108   Tue Mar 31 20:50:05 2020 RaganGeneral200Hg79+ 205Tl81+203Tl80+ impurity is removed by moving scrapper
inside ESR.
Only 220Hg79+ is left now
 31E7D028-F469-4BFF-B683-203821C174E9.jpeg 
  109   Tue Mar 31 21:07:05 2020 RaganGeneralSeparation of 203Tl80+ and 200Hg79+ using scrapper in ESRIt can be seen in the video how 203Tl80+ (on
extreme left) and then 200Hg79+ (in middle
originally) is separted from 205Tl81+ by
 06B012F5-5435-41D7-AD82-4A5FDADF281E.MOV 
  113   Thu Apr 2 02:36:48 2020 RaganGeneralStochastic cooling and orbit problemOn 1 April by 5 pm, we could stop the stochastic
cooling after the stacking process and also
change the orbit of the Tl beam to centre.
  
  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.
  
  121   Thu Apr 2 15:24:15 2020 RaganGeneralHow to know whether electron cooling is workingFor Alle and Kuehler the bottom left status
should look like as shown in pictures below.
 IMG_8238.JPGIMG_8239.JPG 
  130   Fri Apr 3 04:36:21 2020 Ragan, Pierre-Michel, DimaGeneralElectron cooler problem which was then solved04:09 Electron cooler had some problem when
we were stacking for 2 hours measurement.
04:20 GECEBG2T and GECEBG5T were Reset and
  
  143   Sat Apr 4 03:06:12 2020 RaganGeneralInstructions if electron cooler goes off during long storage time measurementsPlease read the attachment.  electron_cooler.pdf 
  148   Sat Apr 4 17:32:01 2020 Ragan, Alex, EstherGeneralNo beam in ESRThe beam is coming from SIS but doesn't arrive
in ESR because the quadrupole magnets in
ESR have failed.
  
  150   Sat Apr 4 18:57:49 2020 Ragan, Alex, EstherGeneralTiming problem with SIS & ESR and problems with stackingThere are further problems with beam stacking
in ESR. It works occasionally but keeps failing.
There is also timing problem between SIS
  
  152   Sat Apr 4 22:31:02 2020 Alex, EstherGeneralBeam in ESR lostThe beam in ESR was lost suddenly at ~22:20
due to a power supply failure of the quadrupoles.
 2020-04-04_22-50-23-470.png 
  169   Mon Apr 6 20:03:50 2020 RaganGeneralExperiment finished ))E121 experiment is finished with the last
10 hours measurement at 19:47 ))
Many thanks to everyone for there significant
  
  170   Thu Apr 9 11:16:35 2020 RaganGeneralMeasurements done in the experiment   storage11.pdfstorage12.pdfstorage13.pdf 
  173   Mon Apr 20 11:17:18 2020 RaganGeneralLogbook   logbook.pdfcombined_FRS.pdfcombined_data.pdf 
  183   Sun May 30 12:09:00 2021 RaganGeneralNTCAPAttached is the info given by Carsten.
The instructions to operate NTCAP are given
on https://wiki.gsi.de/ESR_EXP/ManualOfNTCAP
 ntcap_carsten.pdf 
  35   Sat Mar 28 13:19:56 2020 RaganRunsTemplatebeam: 
energy: 
storage time:
  
  48   Sun Mar 29 11:12:00 2020 RaganRunsstart run e121_run_0239.lmd Sergey and Yuri are tuning Tl beam. The particle
number in ers is about 1e4. I(SIS)=5e8
  
  50   Sun Mar 29 13:04:32 2020 Ragan, RuiJiuRunsrun file: 1298The Tl fragments are being stacked (almost
~20 staacks) and tried to store nicely in
ESR.
 61308F61-2C4C-4651-8C74-608E4E585B14.jpegEB5CA42A-B8DC-4892-8357-9006A1C3BAC0.jpeg 
  56   Sun Mar 29 18:55:19 2020 ShahabRunsFrequency list for identificationHere are some frequencies for identification
of the fragments.
 freqs.jpg 
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