IPAC2012 - List of Authors (Cauchi, M.)

Paper	Title	Page
MOPPD079	Preliminary Thermo-Mechanical Analysis of Angular Beam Impact on LHC Collimators	550
	M. Cauchi, R.W. Assmann, A. Bertarelli, F. Carra, A. Dallocchio, D. Deboy, N. Mariani, A. Rossi CERN, Geneva, Switzerland L. Lari IFIC, Valencia, Spain P. Mollicone UoM, Msida, Malta N.J. Sammut University of Malta, Faculty of Engineering, Msida, Malta
	Funding: This work is supported by EuCARD. 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 if the collimator design is robust against likely error scenarios. One of the catastrophic - though not very probable - accident scenarios identified is an asynchronous beam dump coupled with slight angular misalignment errors of the collimator jaw. 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, with the aim to identify optimal operational conditions.

MOPPD080	Improved Robustness of the LHC Collimation System by Operating with a Jaw-beam Angle	553
	L. Lari, R.W. Assmann, A. Rossi CERN, Geneva, Switzerland M. Cauchi UoM, Msida, Malta A. Faus-Golfe, L. Lari IFIC, Valencia, Spain
	Funding: This work has been carried out through of the European Coordination for Accelerator Research and Development (EuCARD), co-sponsored by EU 7th Framework Program. The robustness of the Phase I collimation system could be improved playing with the angular orientation of each single jaw. A preliminary study on the asymmetric misalignment of the collimator jaws, scanning through different jaw angles and varying beam sizes and energy, have been carried out, aiming at minimizing the energy deposited on metallic collimators, following an asynchronous dump.

Paper

Title

Page

Preliminary Thermo-Mechanical Analysis of Angular Beam Impact on LHC Collimators

550

M. Cauchi, R.W. Assmann, A. Bertarelli, F. Carra, A. Dallocchio, D. Deboy, N. Mariani, A. Rossi
CERN, Geneva, Switzerland
L. Lari
IFIC, Valencia, Spain
P. Mollicone
UoM, Msida, Malta
N.J. Sammut
University of Malta, Faculty of Engineering, Msida, Malta

Funding: This work is supported by EuCARD.
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 if the collimator design is robust against likely error scenarios. One of the catastrophic - though not very probable - accident scenarios identified is an asynchronous beam dump coupled with slight angular misalignment errors of the collimator jaw. 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, with the aim to identify optimal operational conditions.

MOPPD080

Improved Robustness of the LHC Collimation System by Operating with a Jaw-beam Angle

553

L. Lari, R.W. Assmann, A. Rossi
CERN, Geneva, Switzerland
M. Cauchi
UoM, Msida, Malta
A. Faus-Golfe, L. Lari
IFIC, Valencia, Spain

Funding: This work has been carried out through of the European Coordination for Accelerator Research and Development (EuCARD), co-sponsored by EU 7th Framework Program.
The robustness of the Phase I collimation system could be improved playing with the angular orientation of each single jaw. A preliminary study on the asymmetric misalignment of the collimator jaws, scanning through different jaw angles and varying beam sizes and energy, have been carried out, aiming at minimizing the energy deposited on metallic collimators, following an asynchronous dump.