Six-dimensional weak-strong simulations of head-on beam-beam compensation in RHIC

TL;DR

This paper uses six-dimensional weak-strong simulations to analyze how electron lenses can compensate beam-beam effects in RHIC's polarized proton collisions, aiming to improve beam stability.

Contribution

It introduces a 6-D simulation model to evaluate head-on beam-beam compensation with electron lenses in RHIC, providing insights into proton beam dynamics.

Findings

Electron lenses can effectively mitigate beam-beam tune spread.

Simulation results show improved beam stability with compensation.

The model predicts potential operational benefits for RHIC.

Abstract

To compensate the large beam-beam tune spread and beam-beam resonance driving terms in the polarized proton operation in the Relativistic Heavy Ion Collider (RHIC), we will introduce a low-energy DC electron beam into each ring to collide head-on with the opposing proton beam. The device to provide the electron beam is called an electron lens. In this article, using a 6-D weak-strong-beam-beam interaction simulation model, we investigate the effects of head-on beam-beam compensation with electron lenses on the proton beam dynamics in the RHIC 250 GeV polarized proton operation. This article is abridged from the published article [1].