December 1st

(return)

  1. KO extraction to HHD with Argon 18+, 300 MeV/u investigation of spill structure.
  2. Observation: momentum increases during KO extraction. This is the reason for beam movement on the screens. But why?
  3. Ag beam (isotope 107) from Nord source, accelerated to 11.05 MeV/u in UNILAC, stripped to 45+, accelerated to in SIS18 1050 MeV/u (13.86 Tm), intensity out of the box: 5E8 particles.
  4. checking HHD, nice beam in all screens.
  5. copying HHD setting to HAD machine.
  6. optimizing beam to HADES using MADX tool
  7. 18:35 Radiation alarm, probably Biorem "NE-5 aussen Ost", losses were somewhere right before or right after the pion target.
  8. Paramodi save at radiation alarm: 2018-12-01_18-46-11_SIS18_SLOW_HADES_20181201_161118_radalarm.C1.txt

  9. resetting the alarm, reducing the intensity in UNILAC down to about 4E7 particles.
  10. typical BioRem readings:

BioRems20181201.jpg

  1. beam optimized down to GHADDF3, trying to focus to minimize sweep

BeamOnGHADDF3_20181201.jpg

  1. Paramodi settings:

2018-12-01_20-21-20_SIS18_SLOW_HADES_20181201_161118.C1.txt

  1. transmission through beam line almost 100%
  2. transmission SIS18->GTE1DI... 5.6E6/1.5E7 particles = ~20% only

  3. Hansi optimizes resonant extraction, paramodi save with 70% transmission: 2018-12-01_21-32-23_SIS18_SLOW_HADES_20181201_161118.C1.txt


2020-06-17 16:00