Beams Document 7829-v1

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Optical diagnostics for beam halo

Document #:
Beams-doc-7829-v1
Document type:
Talk
Submitted by:
Rob Ainsworth
Updated by:
Rob Ainsworth
Document Created:
14 Nov 2019, 09:44
Contents Revised:
14 Nov 2019, 09:44
Metadata Revised:
14 Nov 2019, 09:53
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Abstract:
Diagnostics of beam halo is important issue especially for machine protection in the high intensity machines. The coronagraph, very special telescope which is designed to observe sun corona by Lyot is applied to beam halo diagnostics. The beam core is masked with opaque disk like eclipse, and surrounding week structure is observed with a contrast of 10^6. In this lecture, I would like to introduce the physics of coronagraph, and measurement result in PF, KEK. I will briefly introduce beam halo diagnostics at LHC with coronagraph, and also introduce a dedicated design for reflective objective system to new coronagraph for the LHC and SuperB. If the time is remained, I will touch a screen-monitor based beam halo measurement at J-PARC.
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