Weak-Strong Simulation of Beam-Beam Effects in Super Proton-Proton Collider

TL;DR

This paper investigates beam-beam interactions in the proposed Super Proton-Proton Collider, analyzing their effects on dynamic aperture and exploring compensation methods like crossing angle adjustments and wire compensation.

Contribution

It provides the first detailed simulation analysis of beam-beam effects in the SPPC, including strategies for mitigating long-range interactions.

Findings

Dynamic aperture is less than 6σ with beam-beam interactions.

Tune scans can optimize dynamic aperture.

Compensation methods include increasing crossing angle and using current-carrying wires.

Abstract

A Super Proton-Proton Collider (SPPC) that aims to explore new physics beyond the standard model will be built in China. Here we focus on the impact of beam-beam interactions in the SPPC. Simulations show that with the current optics and nominal tunes, the dynamic aperture (DA) with all the beam-beam interactions is less than 6{\sigma}, the dominant cause being the long-range interactions. First, we show the results of a tune scan done to maximize the DA. Next, we discuss the compensation of the long-range interactions by increasing the crossing angle and also by using current carrying wires.