• Open Access

Impedance simulations and measurements on the LHC collimators with embedded beam position monitors

N. Biancacci, F. Caspers, J. Kuczerowski, E. Métral, N. Mounet, B. Salvant, A. Mostacci, O. Frasciello, and M. Zobov
Phys. Rev. Accel. Beams 20, 011003 – Published 12 January 2017

Abstract

The LHC collimation system is a critical element for the safe operation of the LHC machine. The necessity of fast accurate positioning of the collimator’s jaws, recently introduced the need to have button beam position monitors directly embedded in the jaws extremities of the LHC tertiary collimators and some secondary collimators. This addition led to a new design of these collimators including ferrites to damp higher order modes instead of rf fingers. In this work we will present the impedance bench measurements and simulations on a TCT (Transverse Tertiary Collimator) prototype including estimations for beam stability for the LHC.

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  • Received 12 September 2016

DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.011003

Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

N. Biancacci, F. Caspers, J. Kuczerowski, E. Métral, N. Mounet*, and B. Salvant

  • CERN, CH-1211 Geneva 23, Switzerland

A. Mostacci

  • Rome University “La Sapienza,” Piazzale Aldo Moro 5, 00185 Roma, Italy

O. Frasciello and M. Zobov

  • INFN-LNF, Via Enrico Fermi 40, 00044 Frascati (Roma), Italy

  • *Present address: Ecole Polytechnique Federale de Lausanne, Switzerland.

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Issue

Vol. 20, Iss. 1 — January 2017

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