Physics – Accelerator Physics
Scientific paper
2009-08-18
Phys.Rev.ST Accel.Beams 12:071002,2009
Physics
Accelerator Physics
17 pages, 20 figures
Scientific paper
10.1103/PhysRevSTAB.12.071002
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 Pb ion operation in the LHC, with focus on the ALICE interaction region, and show that the expected heat load during nominal Pb 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.
Bocian D.
Bruce Rebecca
Gilardoni S.
Jowett John M.
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