Speaker
Carsten Omet
(GSI)
Description
During operation with low charge state heavy ions (e.g. U28+) in the GSI synchrotron SIS18, fast beam losses
have been observed in experiments. At the same time, a dynamic behaviour of the residual gas pressure was
observed. To evercome these problems, a collimator system has been devoped and is now in the final
preparation for installation into two of the twelve sectors of SIS18 in the shutdown this year. It incorporates
the use of the CERN developd NEG coating as well as low desorption rate materials found out by systematic
studies using the ERDA (Elastic Recoil Detection Analysis) technology at GSI. The collimator system will both
reduce the desorption rate as well as control the not avoidable produced desorption gases. Simulation
studies using the code STRAHLSIM as well as construction details are presented.
Co-Authors: SPILLER Peter (GSI)
Primary author
Carsten Omet
(GSI)
Co-author
Peter Spiller
(GSI)
