欧洲核子研究中心质子同步加速器内部倾倒的性能:数值模拟研究以及与光束测量结果的比较

S. Niang, T. Pugnat, D. Domange, L.S. Esposito, M. Giovannozzi, E. Gnacadja, C. Hernalsteens, A. Huschauer, R. Tesse
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引用次数: 0

摘要

在大型强子对撞机注入器升级项目的框架内,欧洲核子研究中心质子同步加速器(PS)环的新型内部倾卸装置已经设计、安装完毕并成功投入使用。该装置的设计目的是快速进入光束,并在几千次旋转过程中阻止带电粒子,从而保护质子同步加速器硬件免受光束引起的损坏。由于其设计,内部倾弃装置只能吸收撞击它的光束粒子所产生的部分二次粒子雨。倾卸器的性能应确保在整个 PS 能量范围内有效使用,即从 2 GeV 的注入(动能)到 26 GeV 的平顶(总能量)。本文介绍了综合数值模拟,结合先进的光束动力学和光束与物质相互作用代码来分析停止或散射粒子的行为。在多圈光束动力学模拟计算的影响基础上,使用 FLUKA 进行了详细的喷淋模拟,以评估辐射场对下游设备的影响,重点是光束损耗监测仪测量的剂量。这些数值模拟的结果与 PS 及其内部转储站日常运行期间收集的数据进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance of the CERN Proton Synchrotron internal dump: numerical simulation studies and comparison with beam measurements
In the framework of the LHC Injector Upgrade project, a new internal dump for the CERN Proton Synchrotron (PS) ring has been designed, installed, and successfully commissioned. This device is designed to move rapidly into the beam and stop charged particles over several thousand turns to provide protection to PS hardware against beam-induced damage. Due to its design, the internal dump absorbs only a fraction of the secondary particles shower produced by the beam particles that impinge on it. The performance of the dump should ensure efficient use throughout the PS energy range, i.e. from injection at 2 GeV (kinetic energy) to flat top at 26 GeV (total energy). This paper presents comprehensive numerical simulations that combine advanced beam dynamics and beam-matter interaction codes to analyse the behaviour of stopped or scattered particles. Based on the impacts computed by multi-turn beam dynamics simulations, detailed shower simulations with FLUKA were performed to assess the impact of the radiation field on downstream equipment, with a particular emphasis on the dose measured by Beam Loss Monitors. The results of these numerical simulations are compared with the data collected during the routine operation of the PS and its internal dump.
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