12 research outputs found
BEAM LOSS MONITORING AND CONTROL FOR HIGH INTENSITY BEAMS AT THE AGOR-FACILITY
The experiments at the AGOR facility require intense
heavy ion beams. Typical examples are 1013 pps of 20Ne6+
at 23.3 MeV/A and ≥1012 pps 206Pb27+ at 8.5 MeV/A. To
prevent damage to components by the beam (power
density up to 1 kW/mm3 in unfavourable cases) a modular
beam loss monitoring and control system has been
developed for the cyclotron and high energy beam lines.
The architecture of the system is described and the
considerations for the major design choices discussed.
The system uses the CAN-bus for communication and
verification of system integrity. The injected beam is
chopped at 1 kHz with a variable duty factor between 5
and 90 %. The beam intensity at injection and a number
of locations in the high energy beam line is measured by
inductive pick-ups. Furthermore, localized beam losses on
slits and diaphragms are directly measured. When beam
loss in any section exceeds the predefined maximum
value, the duty factor of the beam is automatically
reduced.IMP;Chinese Academy of Science