Beam losses from ultra-peripheral nuclear collisions between 208Pb82+ ions in the Large Hadron Collider and their alleviation

Bruce, R; Gildardoni, S; Jowett, J M; Bocian, D

doi:10.1103/PhysRevSTAB.12.071002

Title: Beam losses from ultra-peripheral nuclear collisions between 208Pb82+ ions in the Large Hadron Collider and their alleviation

Journal Article · Wed Jul 01 00:00:00 EDT 2009 · Submitted to Phys.Rev.ST Accel.Beams

DOI:https://doi.org/10.1103/PhysRevSTAB.12.071002· OSTI ID:962751

Bruce, R; Gildardoni, S; Jowett, J M; Bocian, D

Electromagnetic interactions between colliding heavy ions at the Large Hadron Collider (LHC) at CERN will give rise to localized beam losses that may quench superconducting magnets, apart from contributing significantly to the luminosity decay. To quantify their impact on the operation of the collider, we have used a three-step simulation approach, which consists of optical tracking, a Monte-Carlo shower simulation and a thermal network model of the heat flow inside a magnet. We present simulation results for the case of {sup 208}Pb{sup 82+} ion operation in the LHC, with focus on the ALICE interaction region, and show that the expected heat load during nominal {sup 208}Pb{sup 82+} operation is 40% above the quench level. This limits the maximum achievable luminosity. Furthermore, we discuss methods of monitoring the losses and possible ways to alleviate their effect.

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Research Organization:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 962751

Report Number(s):: FERMILAB-PUB-09-367-TD; TRN: US0902934

Journal Information:: Submitted to Phys.Rev.ST Accel.Beams, Journal Name: Submitted to Phys.Rev.ST Accel.Beams

Country of Publication:: United States

Language:: English

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Title: Beam losses from ultra-peripheral nuclear collisions between 208Pb82+ ions in the Large Hadron Collider and their alleviation

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