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ID Date Author Categorydown Subject Text Attachments
  165   Mon Apr 6 08:37:02 2020 Ragan, Shahab, Pierre-MichelRuns10 hour measurement (S2: 0/35 mm and S6: -20/7 mm)beam: 205Tl81+ (no scraping , Al ~1g/cm2)
energy: 400 MeV/u
storage time: 10 hr
 8x 
  166   Mon Apr 6 09:34:58 2020 ShahabRunsPictures from one and a half hour measurementcheers!  wideband_rec_001.PNG 
  167   Mon Apr 6 14:17:54 2020 Yuri, ShahabRunsFRS valvesWe saw reduction in ESR beam life. It turned
out that FRS has opened valves and venting
caused us reduction of the quality of vacuum
 2020-04-06_14-22-20-965.png 
  168   Mon Apr 6 14:57:04 2020 ShahabRunscooler downcooler component GECEBG2T again had to be
reset.
  
  13   Wed Jan 29 10:42:42 2020 ShahabGeneralGas target control with the new control system event
Many thanks to Sergey and Nikos we have tested
the connection of the new control system
 IMG_20200128_153508.jpgIMG_20200128_145345.jpgIMG_20200128_145340.jpgIMG_20200128_145307.jpgIMG_20200128_144555.jpg 
  14   Fri Feb 21 11:30:52 2020 LaszloGeneralShift plane127: https://docs.google.com/spreadsheets/d/14m8WcCq1erx6HqWJRK7TLbCx121IkjqGa5l-frf4YjI/edit#gid=0

e121: https://docs.google.com/spreadsheets/d/10MUzA5-Ilf2WzCyNj8u_KSG6yzPg0e4vtZGGPFB3K-k/edit#gid=0
  
  18   Thu Mar 26 17:21:40 2020 RaganGeneralStochastic cooling1) From SIS, 206Pb67+ @401.17 MeV/u goes to
FRS where only SEETRAM is placed in the target
area to strip off 206Pb67+ to get 206Pb81+.
  
  19   Fri Mar 27 13:02:07 2020 RaganGeneralStochastic cooling1) ESR team is successful with the Stochstic
cooling of primary H-like 206Pb81+ beam @400
MeV/u.
 stochastic_cooling.PNG 
  20   Fri Mar 27 13:04:17 2020 RaganGeneralFRS Settings until nowYuri and Helmut have been extensively involved
in tuning and optimizing of the FRS.
 frs.pdfFRS.pdf 
  21   Fri Mar 27 13:40:54 2020 RaganGeneralNTCap start and shutdown informationThe attachment contains information on how
to start and shutdown NTCap and bridge computer.
 ntcapmanual.pdf 
  22   Fri Mar 27 19:51:37 2020 RaganGeneralESR MachineBy changing the tune to Qx=2.33, Qy=2.36 the
momentum acceptance was significantly improved.
A variation of the cooler voltage of 10300
  
  23   Fri Mar 27 19:59:09 2020 RaganGeneralBeam stacking in ESR is achievedThanks to Sergey and Markus, stacking of primary
H-like 206Pb81+ beam in ESR is achieved.
 8B7F254E-DB10-48B6-9E2E-9CA0FF998C12.MOVstacking.png 
  24   Fri Mar 27 20:05:43 2020 RaganGeneralH2 gas jet readyThanks to Nikos, stable H2 gas jet target
with 10^14 particles/cm^3 is ready.
(More information can be found on: https://ulpc24.gsi.de/cgi-bin/jet.py?gasart=Helium
 BAFA7906-5F66-4108-86F9-6D61573B43CD.MOV 
  25   Fri Mar 27 20:52:31 2020 RaganGeneralPlans for the measurement with 206Pb81+We plan to measure:

1. Lifetime of H-like 206Pb81+ beam with
  
  26   Sat Mar 28 01:14:19 2020 RaganGeneralCross-section for capture and ionisation of 206Pb81+ with H2 target Cross-section for capture and ionisation of
206Pb81+ with H2 gas jet target are calculated
using GLOBAL code.
 GLOBAL.pdf 
  30   Sat Mar 28 11:07:49 2020 Ragan, RuiJiu, Tino, GeneralNikos is changing gas jet targetThe gas jet target is now being changed from
H2 to Ar by Nikos.
  
  31   Sat Mar 28 11:20:10 2020 Ragan, RuiJiu, Mei, Yuri, TinoGeneralReducing beam intensity in ESRYuri reduces beam intensity in the ESR to
reduce the countrate on the detectors.
  
  32   Sat Mar 28 11:28:11 2020 Ragan, RuiJiu, Mei, Yuri, TinoGeneralESR openESR is open now   
  34   Sat Mar 28 13:09:11 2020 Mei,Yury, Tino, Ragan, RuijiuGeneralShift planFrom Yury,

For now, measure the beam life time with
  
  36   Sat Mar 28 14:19:24 2020 Ragan, RuiJiu, Mei, YuriGeneralInstructions to change the electron cooler currentAttached are the instructions on how to change
the electron cooler current for the lifetime
measurements of 206Pb81+ beam (interaction
 instructions.pdf 
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