Combined-function optics for circular high-energy hadron colliders

TL;DR

This paper proposes a novel combined-function periodic cell design for circular high-energy hadron colliders to maximize dipole magnet filling factor, involving detailed optical and magnet design considerations.

Contribution

It introduces a combined-function periodic cell approach to improve dipole magnet utilization in future high-energy colliders.

Findings

Optimized magnetic field strength for collider design

Detailed optical properties of the proposed structure

Design of superconducting magnets for implementation

Abstract

The design of future circular high-energy hadron colliders is based on the achievement of challenging magnetic fields, needed to keep the hadron beams orbiting along the ring circumference. The strength of the dipolar magnetic field is a function of the machine radius, beam energy, and of the fraction of the ring circumference that can be filled with dipoles. In this paper we propose to use a combined-function periodic cell to maximise the filling factor of the dipole magnets. The optical properties of the proposed periodic structure are discussed in detail together with the design of the superconducting magnets needed to implement the proposed approach.