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Title: First attempts at using active halo control at the LHC
Authors: Wagner, Jorg
Bruce, Roderik
Garcia Morales, H.
Hofle, Wolfgang
Kotzian, G.
Kwee-Hinzmann, Regina
Langner, Andy S.
Mereghetti, Alessio
Quaranta, E.
Redaelli, Stefano
Rossi, Adriana
Salvachua, Belen
Tomas, Rogelio
Valentino, Gianluca
Valuch, Daniel
Stancari, Giulio
Keywords: Large Hadron Collider (France and Switzerland)
Colliders (Nuclear physics)
Issue Date: 2016
Publisher: Joint Accelerator Conferences Website (JACoW)
Citation: Wagner, J. F., Bruce, R., Garcia-Morales, H., Hofle, W., Kotzian, G., Kwee-Hinzmann, R.,... Stancari, G. (2016). First attempts at using active halo control at the LHC. 7th International Particle Accelerator Conference, Busan. 2486-2489.
Abstract: The beam halo population is a non-negligible factor for the performance of the LHC collimation system and themachine protection. In particular this could become crucial for aiming at stored beam energies of 700MJ in the High Luminosity (HL-LHC) project, in order to avoid beam dumps caused by orbit jitter and to ensure safety during a crab cavity failure. Therefore several techniques to safely deplete the halo, i.e. active halo control, are under development. In a first attempt a novel way for safe halo depletion was tested with particle narrow-band excitation employing the LHC Transverse Damper (ADT). At an energy of 450GeV a bunch selective beam tail scraping without affecting the core distribution was attempted. This paper presents the first measurement results, as well as a simple simulation to model the underlying dynamics.
ISBN: 9783954501472
Appears in Collections:Scholarly Works - FacICTCCE

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