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Title: Preliminary thermo-mechanical analysis of angular beam impact on LHC collimators
Authors: Cauchi, Marija
Wolfgang Assmann, Ralph
Bertarelli, Alessandro
Carra, Federico
Dallocchio, Alessandro
Deboy, D.
Mariani, Nicola
Rossi, Adriana
Lari, Luisella
Mollicone, Pierluigi
Sammut, Nicholas
Keywords: Large Hadron Collider (France and Switzerland)
Collimators (Optical instrument)
Issue Date: 2012
Publisher: IPAC
Citation: Cauchi, M., Wolfgang Assmann, R., Bertarelli, A., Carra, F., Dallocchio, A., Deboy, D.,… Sammut, N. (2012). Preliminary thermo-mechanical analysis of angular beam impact on LHC collimators. International Particle Accelerator Conference (IPAC’12), New Orleans.
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, accident scenarios must be well studied in order to assess their effect on the robustness of the collimators. One of the most probable accident scenarios identified is an asynchronous beam dump coupled with slight angular misalignment errors of the collimator installation at the beam-line. Previous work presented a preliminary thermal evaluation of the extent of beam-induced damage for such scenarios, where it was shown that in some cases, a tilt of the jaw could actually serve to mitigate the effect of an asynchronous dump on the collimators. This paper will further analyze the response of tertiary collimators in presence of such angular jaw alignments. Such work will also help to start identifying optimal operational conditions.
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