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Title: High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility
Authors: Cauchi, Marija
Aberle, Oliver
Wolfgang Assmann, Ralph
Bertarelli, Alessandro
Carra, Federico
Cornelis, Karel
Dallocchio, Alessandro
Deboy, Daniel
Lari, Luisella
Redaelli, Stefano
Rossi, Adriana
Salvachua, Belen
Mollicone, Pierluigi
Sammut, Nicholas
Keywords: Large Hadron Collider (France and Switzerland)
Collimators (Optical instrument)
Beam optics
Issue Date: 2014
Publisher: American Physical Society
Citation: Cauchi, M., Aberle, O., Wolfgang Assmann, R., Bertarelli, A., Carra, F., Cornelis, K.,… Sammut, N. (2014). High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility. Physical Review Special Topics - Accelerators and Beams, 17(2), 021004-1-14.
Abstract: The correct functioning of a collimation system is crucial to safely operate highly energetic particle accelerators, such as the Large Hadron Collider (LHC). The requirements to handle high intensity beams can be demanding. In this respect, investigating the consequences of LHC particle beams hitting tertiary collimators (TCTs) in the experimental regions is a fundamental issue for machine protection. An experimental test was designed to investigate the robustness and effects of beam accidents on a fully assembled collimator, based on accident scenarios in the LHC. This experiment, carried out at the CERN High-Radiation to Materials (HiRadMat) facility, involved 440 GeV proton beam impacts of different intensities on the jaws of a horizontal TCT. This paper presents the experimental setup and the preliminary results obtained, together with some first outcomes from visual inspection and a comparison of such results with numerical simulations.
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