Abstract
The HL-LHC (High Luminosity LHC) project aims to an increase of the luminosity of the LHC by a factor of 10. In order to realize this ambitious goal, the LHC itself has to undergo a major upgrade accompanied by an extensive upgrade of the complete injector complex referred to as LHC injector upgrade (LIU). In the framework of the LIU project, a new rapid cycling synchrotron (RCS) as an alternative to the energy upgrade of the existing PS Booster has been proposed. Motivated by the optics studies conducted for this RCS, the more general question of the influence of the linear optics on the machine performance has been raised. In this paper, we want to investigate this question by comparing different lattices with the final aim of identifying lattice characteristics advantageous under strong space-charge effects.
Highlights
One of the main performance limitations of the CERN Proton Synchrotron (PS) Booster are space-charge effects
Based on the considerations for the PS Booster, it was initially expected that a small variation of the beam size, a high lattice symmetry, a small phase advance per cell, and no inserted straight section would lead to the best performance, but the importance of the individual characteristics was not evident
This paper aims at studying in detail the importance of the individual characteristics by comparing different lattices and optics with regard to the above-mentioned assumptions
Summary
The HL-LHC (High Luminosity LHC) project aims to an increase of the luminosity of the LHC by a factor of 10. In order to realize this ambitious goal, the LHC itself has to undergo a major upgrade accompanied by an extensive upgrade of the complete injector complex referred to as LHC injector upgrade (LIU). In the framework of the LIU project, a new rapid cycling synchrotron (RCS) as an alternative to the energy upgrade of the existing PS Booster has been proposed. Motivated by the optics studies conducted for this RCS, the more general question of the influence of the linear optics on the machine performance has been raised. We want to investigate this question by comparing different lattices with the final aim of identifying lattice characteristics advantageous under strong space-charge effects
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