Design and operation of the air-cooled beam dump for the extraction line of CERN’s proton synchrotron booster

A Perillo-Marcone,P Kaiser,V Venturi,V Vlachoudis,A Ciccotelli,N Solieri,M Calviani,A Sarrio

doi:10.1103/physrevaccelbeams.23.063001

A Perillo-Marcone, P Kaiser + Show 6 more

Open Access

https://doi.org/10.1103/physrevaccelbeams.23.063001

Copy DOI

Abstract

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, consisting of up to 1E14 protons per pulse at 2 GeV, 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 thermo-mechanical 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.

Highlights

The proton synchrotron booster (PSB) has accelerated protons as part of CERN’s accelerator complex for more than 40 years [1]
As a result of the Large Hadron Collider (LHC) Injector Upgrade (LIU) project at CERN [3], foreseen after the machine upgrades planned for CERN’s LS2 (Long Shutdown 2, 2019-2020), the booster will be able to accelerate up to 1 × 1014 ppp at 2 GeV. It was in the framework of this series of upgrades that the dump was replaced in October 2013, during CERN’s LS1 (Long Shutdown 1, 2013-2014)
In order to cope with the more intense and powerful beam expected after the PS booster upgrade during LS2, thorough calculations were performed to produce a robust, conservative beam dump design

Summary

Introduction

The proton synchrotron booster (PSB) has accelerated protons as part of CERN’s accelerator complex for more than 40 years [1]. As a result of the LHC Injector Upgrade (LIU) project at CERN [3], foreseen after the machine upgrades planned for CERN’s LS2 (Long Shutdown 2, 2019-2020), the booster will be able to accelerate up to 1 × 1014 ppp at 2 GeV. It was in the framework of this series of upgrades that the dump was replaced in October 2013, during CERN’s LS1 (Long Shutdown 1, 2013-2014).

Objectives

Methods

Findings

Conclusion