Please use this identifier to cite or link to this item:
https://www.um.edu.mt/library/oar/handle/123456789/58702
Title: | Simulator for beam-based LHC collimator alignment |
Authors: | Valentino, Gianluca Aßmann, Ralph Redaelli, Stefano Sammut, Nicholas |
Keywords: | Colliders (Nuclear physics) Collimators (Optical instrument) -- Calibration Beam optics Particle beams, Colliding |
Issue Date: | 2014 |
Publisher: | American Physical Society |
Citation: | Valentino, G., Aßmann, R., Redaelli, S., & Sammut, N. (2014). Simulator for beam-based LHC collimator alignment. Physical Review Special Topics-Accelerators and Beams, 17(2), 021003. |
Abstract: | In the CERN Large Hadron Collider, collimators need to be set up to form a multistage hierarchy to ensure efficient multiturn cleaning of halo particles. Automatic algorithms were introduced during the first run to reduce the beam time required for beam-based setup, improve the alignment accuracy, and reduce the risk of human errors. Simulating the alignment procedure would allow for off-line tests of alignment policies and algorithms. A simulator was developed based on a diffusion beam model to generate the characteristic beam loss signal spike and decay produced when a collimator jaw touches the beam, which is observed in a beam loss monitor (BLM). Empirical models derived from the available measurement data are used to simulate the steady-state beam loss and crosstalk between multiple BLMs. The simulator design is presented, together with simulation results and comparison to measurement data. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/58702 |
Appears in Collections: | Scholarly Works - FacICTMN |
Files in This Item:
File | Description | Size | Format | |
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Simulator_for_beam_based_LHC_collimator_alignment.pdf | 2.04 MB | Adobe PDF | View/Open |
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