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Title: Preliminary assessment of beam impact consequences on LHC Collimators
Authors: Cauchi, Marija
Wolfgang Assmann, Ralph
Bertarelli, Alessandro
Bruce, Roderik
Carra, Federico
Dallocchio, Alessandro
Deboy, D.
Mariani, Nicola
Rossi, Adriana
Lari, Luisella
Mollicone, Pierluigi
Sammut, Nicholas
Keywords: Collimators (Optical instrument)
Large Hadron Collider (France and Switzerland)
Issue Date: 2011
Publisher: IPAC
Citation: Cauchi, M., Wolfgang Assmann, R., Bertarelli, A., Bruce, R., Carra, F., Dallocchio, A.,… Sammut, N. (2011). Preliminary assessment of beam impact consequences on LHC Collimators. International Particle Accelerator Conference (IPAC11), San Sebastian. 1617-1619.
Abstract: The correct functioning of the LHC collimation system is crucial to attain the desired LHC luminosity performance. However, the requirements to handle high intensity beams can be demanding. In this respect, the robustness of the collimators plays an important role. An accident, which causes the proton beam to hit a collimator, might result in severe beam-induced damage and, in some cases, replacement of the collimator, with consequent downtime for the machine. In this paper, several case studies representing different realistic beam impact scenarios are shown. A preliminary analysis of the thermal response of tertiary collimators to beam impact is presented, from which the most critical cases can be identified. Such work will also help to give an initial insight on the operational constraints of the LHC by taking into account all relevant collimator damage limits.
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