About SciDoc
Document Search

DOCUMENT METADATA
SLAC Publication: SLAC-PUB-16982
SLAC Release Date: May 25, 2017
PERTURBATION ANALYSIS FOR BEAM TRAJECTORIES. DETERMINING LOCAL SHIELDING CONTAINMENT FOR LCLS-II
Santana Leitner, Mario.
Containment of normal beam losses is a well-established practice for normal operation of particle accelerators, for which well-established tracking codes are applied. However, for exceptional events, such as magnet power failures, se- vere lattice mis-match, etc., ad-hoc analytical approaches are typically applied. Oftentimes those methods are not au- tomatic; they dont define the full phase-space of mis-steered trajectories and cannot keep up with beam-line upgrades. Moreover, there may exist a... Show Full Abstract
Containment of normal beam losses is a well-established practice for normal operation of particle accelerators, for which well-established tracking codes are applied. However, for exceptional events, such as magnet power failures, se- vere lattice mis-match, etc., ad-hoc analytical approaches are typically applied. Oftentimes those methods are not au- tomatic; they dont define the full phase-space of mis-steered trajectories and cannot keep up with beam-line upgrades. Moreover, there may exist a disconnect between the teams an- alyzing consequences of errant beams and those involved in beam-line design. With electron beams exceeding 100 kW, design of LCLS-II at SLAC National Accelerator Laboratory requires exhaustive beam-containment studies to avoid po- tential destruction of components and excessive dose rates. Here we present ray-trace studies for LCLS-II performed with FLUKA Monte Carlo code. The implementation of the geometry of the different beam-lines and of the nomi- nal optics was assisted by MadFLUKA. Perturbations to the magnetic were applied to inspect failures compatible with beam operations and hardware settings. Consequences of mis-steered rays and the respective mitigations were also analyzed with FLUKA. Show Partial Abstract
Download File:
  • Interest Categories: Instrumentation/Development, General Physics, Other Physics, X-Ray Free Electron Laser, Other