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Potential Remedies for the High Synchrotron-Radiation-Induced Heat Load for Future Highest-Energy-Proton Circular Colliders

R. Cimino, V. Baglin, and F. Schäfers
Phys. Rev. Lett. 115, 264804 – Published 31 December 2015
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Abstract

We propose a new method for handling the high synchrotron radiation (SR) induced heat load of future circular hadron colliders (like FCC-hh). FCC-hh are dominated by the production of SR, which causes a significant heat load on the accelerator walls. Removal of such a heat load in the cold part of the machine, as done in the Large Hadron Collider, will require more than 100 MW of electrical power and a major cooling system. We studied a totally different approach, identifying an accelerator beam screen whose illuminated surface is able to forward reflect most of the photons impinging onto it. Such a reflecting beam screen will transport a significant part of this heat load outside the cold dipoles. Then, in room temperature sections, it could be more efficiently dissipated. Here we will analyze the proposed solution and address its full compatibility with all other aspects an accelerator beam screen must fulfill to keep under control beam instabilities as caused by electron cloud formation, impedance, dynamic vacuum issues, etc. If experimentally fully validated, a highly reflecting beam screen surface will provide a viable and solid solution to be eligible as a baseline design in FCC-hh projects to come, rendering them more cost effective and sustainable.

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  • Received 12 August 2015

DOI:https://doi.org/10.1103/PhysRevLett.115.264804

This article is available 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

Synopsis

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Cooler Colliders

Published 31 December 2015

A new design scheme for high-energy particle colliders could halve the cost of cooling future machines.

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Authors & Affiliations

R. Cimino1,2,*, V. Baglin2, and F. Schäfers3

  • 1LNF-INFN, Via Enrico Fermi 40, 00044 Frascati, Italy
  • 2CERN, CH-1211 Geneva 23, Switzerland
  • 3Institute for Nanometre Optics and Technology, HZB BESSY-II, Berlin, Germany

  • *roberto.cimino@lnf.infn.it

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Vol. 115, Iss. 26 — 31 December 2015

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