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Data-driven cross-talk modeling of beam losses in LHC collimators
- Source :
- Physical Review Accelerators and Beams, Vol 22, Iss 8, p 083002 (2019)
- Publication Year :
- 2019
- Publisher :
- American Physical Society, 2019.
-
Abstract
- The Large Hadron Collider at CERN is equipped with a collimation system to intercept potentially dangerous beam halo particles before they damage its sensitive equipment. The collimator settings are determined following a beam-based alignment procedure, in which the collimator jaws are moved towards the beam until losses appear in the beam loss monitors. When the collimator reaches the beam envelope, beam losses propagate mainly in the direction of the beam and are, therefore, also observed by other nearby beam loss monitors. This phenomenon is known as cross talk. Due to this, collimators are aligned sequentially to be able to identify which losses are generated by which collimator, such that any cross talk across beam loss monitors positioned close to each other is avoided. This paper seeks to quantify the levels of cross-talk observed by beam loss monitors when multiple collimators are moving, to be able to determine the actual beam loss signals generated by their corresponding collimators. The results obtained successfully predicted the amount of cross-talk observed for each of the cases tested in this study. This was then extended to predict loss map case studies and the proton impacts at each collimator by comparing them to simulations.<br />peer-reviewed
- Subjects :
- Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)
Proton
Physics::Medical Physics
01 natural sciences
Collimated light
Data-driven
law.invention
Beam halo
Optics
law
0103 physical sciences
Machine learning
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
Envelope (radar)
010306 general physics
Large Hadron Collider (France and Switzerland)
Physics
Large Hadron Collider
010308 nuclear & particles physics
business.industry
Collimator
Surfaces and Interfaces
Accelerators and Storage Rings
Physics::Accelerator Physics
lcsh:QC770-798
business
Beam (structure)
Subjects
Details
- Language :
- English
- ISSN :
- 24699888
- Volume :
- 22
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- Physical Review Accelerators and Beams
- Accession number :
- edsair.doi.dedup.....dabc9ab7aab359bbc6bd19ed0bd091f4