A new beam dump has been designed, built, installed and operated to withstand the future proton beam extracted from the proton synchrotron booster (PSB) in the framework of the LHC Injector Upgrade (LIU) Project at CERN. The future proton beam consists of up to $1\times {10}^{14}$ protons per pulse at 2 GeV and is foreseen after the machine upgrades planned for CERN’s Long Shutdown 2 (2019-2020). In order to be able to efficiently dissipate the heat deposited by the primary beam, the new dump was designed as a cylindrical block assembly, made out of a copper alloy and cooled by forced airflow. In order to determine the energy density distribution deposited by the beam in the dump, Monte Carlo simulations were performed using the fluka code, and thermomechanical analyses were carried out by importing the energy density into ANSYS. In addition, computational fluid dynamics (CFD) simulations of the airflow were performed in order to accurately estimate the heat transfer convection coefficient on the surface of the dump. This paper describes the design process, highlights the constraints and challenges of integrating a new dump for increased beam power into the existing facility and provides data on the operation of the dump.

中文翻译：

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CERN质子同步加速器提取器风冷束流收集器的设计和运行

在欧洲核子研究组织（CERN）的LHC喷射器升级（LIU）项目的框架内，已经设计，建造，安装和运行了一个新的电子束收集器，以承受从质子同步加速器（PSB）提取的未来质子束。未来的质子束包括$\mathrm{1个}\times {10}^{14}$每个脉冲的质子数为2 GeV，预计在CERN的Long Shutdown 2（2019-2020）计划升级后进行。为了能够有效地散发初级光束沉积的热量，新的垃圾箱被设计为圆柱形的块状组件，由铜合金制成并通过强制气流冷却。为了确定光束在堆场中沉积的能量密度分布，使用fluka进行了蒙特卡洛模拟代码，并通过将能量密度导入ANSYS进行热机械分析。此外，对气流进行了计算流体动力学（CFD）模拟，以准确估算垃圾堆表面的传热对流系数。本文介绍了设计过程，重点介绍了将新的转储站集成到现有设施中以提高光束功率的限制和挑战，并提供了转储站的运行数据。