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  nuclear two-photon decay, Page 1 of 12  Not logged in ELOG logo
ID Date Authordown Category Subject Text Attachments
  167   Thu Jul 1 14:47:15 2021 Yury, HelmutAcceleratoradded high Brho scrapersSo far only scrapers for low Brho were used:
  GE01DS_HI = -58mm (arc from inside) and
  GEEXDS2HA = -11.2 (straight from outside)
 ESR-scraper-overview.jpgscrapers-used.JPG 
  105   Sun May 9 13:53:07 2021 Yuri, Wolfram, Andrew, LilianaCalibrationChange of energy: Back as beforeAfter looking at the spectrum it was concluded
that the same isotopes, and no more, could
be identified. 
 Screenshot_2021-05-09_13-59-36.png 
  77   Sat May 8 17:29:54 2021 Yuri, Sergey, Wolfram, Michael, ShahabRunsrecording Kr decay measurement on NTCAPUc = 250mA
decay Kr 78, 476 MeV/u
  
  153   Wed Jun 30 13:57:14 2021 Yuri, SergeyAcceleratorsextupoles + scraper positionsAfter setting up on 70Se
Sextupoles were adjusted to optimize the
resolution of the 70Se peak. Set values are
 photo_2021-06-30_14-09-08.jpgphoto_2021-06-30_14-02-25.jpg 
  148   Wed Jun 30 09:04:50 2021 Yuri, MarkusAcceleratorStatus1) Over night the source was conservated.
It is being restarted now.
2) The approximated amount of Gas in this
  
  16   Thu May 6 21:26:02 2021 Yuri et al.AcceleratorEnergiesgamma_t = 1.3955
Br(72Ge) corresponds to 6.79575 Tm
E (Kr) at Br(72Ge) = 392.9 MeV/u
  
  3   Tue May 4 13:26:40 2021 YuriSimulationsExpected spectrum 72GeA       Z      M/q                Int    difference
in kHz@245MHz
68 30 2.263614752 35 -933.1
  
  40   Fri May 7 09:56:43 2021 YuriCalibrationIdentification VerificationWith closed scrapers there are only a few
weak lines.
Open temporarily all scrapers in the ESR
  
  41   Fri May 7 09:58:04 2021 YuriAcceleratorSetting up KO extraction for CavesSIS optimisation requires us to stop. Only
sporadic shots.
  
  42   Fri May 7 10:05:06 2021 YuriAcceleratorE02DS3HG does not driveE02DS3HG stays at -35 mm and does not react   
  43   Fri May 7 10:46:40 2021 YuriAcceleratorGE02DS3HGThe scraper is blocked at -10 mm and -unfortunately-
blocks the beam in the ESR. Uli Popp is taking
care.
  
  46   Fri May 7 14:06:02 2021 YuriAcceleratorSIS kicker failure    
  48   Fri May 7 16:09:50 2021 YuriAcceleratorStop, change of sextuple settings    
  74   Sat May 8 11:42:21 2021 YuriAcceleratorKPsEO1KP03 was on = -44.9 A
E01KP05 was off, now is on = 3.67 A
The beam is on the right frequency, but the
  
  106   Sun May 9 14:19:44 2021 YuriAcceleratorSpectrumWe accept larger m/q values than we like to.
m/q(low) cut ~ 2.08. Decrease ESR energy
from 369.2 -> 368.4 MeV/u
  
  135   Fri Jun 25 21:47:24 2021 YuriAnalysisIdentificationAttached are two files with a proposed particle
identification.
Different colors indicate different harmonic
 Spectrum_possible_ID.pngID_2nd_Part.jpg 
  147   Wed Jun 30 08:59:37 2021 YuriAccelerator70Se settingX(9Be)=1.815 g/cm2 (adjusted in primary beam
setting)
  
  209   Fri Jul 2 13:10:00 2021 YuriAcceleratorScrapers12:46 moved the TOF detector scraper back
to -11 mm
  
  214   Fri Jul 2 16:14:17 2021 YuriAcceleratorScrapers 4 72BrStarting 15:15
The scrapers are moved very much close to
each other to eliminate all background particles
 1C28A49A-5FA1-4A81-8675-3ED9660FD793.png 
  220   Fri Jul 2 20:33:44 2021 YuriAccelerator70Se setting with closed scrapersWe tune back to 70Se.
The scrapers stay closed at EEXDS2HA=0 mm,
EEXDS1HG=+5 mm
  
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