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Abstract:
Beam halo can have severe effects on the performance
of high energy accelerators. It reduces the experimental
throughput, may lead to noise in the experiments, or even
damage accelerator components. In order to understand
and ideally control the formation and evolution of beam
halo, detailed studies are required.
In this contribution halo generation mechanisms and the
underlying physical principles are first presented, before
the particular case of the CLIC Test Facility (CTF3) is
discussed. The results from test measurements at UMER,
based on an adaptive mask that is used to filter out the
beam core, are presented.