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Preprint
Report number LHC-PROJECT-Report-1174 ; CERN-LHC-PROJECT-Report-1174
Title LHCb Injected Beam Accidents
Author(s) Appleby, R B (CERN)
Publication 2009
Imprint 31 Jan 2009
Number of pages 27
Note Presented at The 23rd Particle Accelerator Conference, PAC'09, 4 to 8 May 2009
Not published in the proceedings
Subject category Accelerators and Storage Rings
Accelerator/Facility, Experiment CERN LHC ; LHCb
Keywords LHC ; experiments ; machine protection ; injection ; LHCb
Abstract The LHCb (point 8) interaction region is sensitive to beam orbit errors arising from magnet setting errors on injection. In this report, beam accident scenarios under injection for LHCb are described, focusing on ultra- fast error injection scenarios for the interaction straight correctors and dipoles. Beam 1 and beam 2 accident scenarios are considered, where the errors can lead to beam orbits striking the LHCb vacuum chamber or elements of the machine. The required thresholds for magnet current interlocks are calculated to avoid machine and detector risk.
Submitted by sonia.escaffre@cern.ch

 


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