Conceptual designs of dipole magnet for muon collider ring

TL;DR

This paper presents conceptual designs for superconducting dipole magnets using Nb3Sn for a 1.5 TeV muon collider, addressing heat load, field quality, and mechanical support to meet collider requirements.

Contribution

It introduces a novel design of Nb3Sn-based dipole magnets optimized for muon collider conditions, including heat load management and mechanical stability.

Findings

Magnet design achieves 10 T field in 20-mm aperture.

Magnets handle ~0.5 kW/m heat load from muon decays.

Optimized cross-sections improve field quality.

Abstract

Conceptual designs of a superconducting dipole magnet for a Storage Ring of a Muon Collider with a 1.5 TeV center of mass (c.o.m.) energy and an average luminosity of 10 34 cm-2s-1 are presented. In contrast to proton machines, the dipoles for the Muon Collider should be able to handle ~0.5 kW/m of dynamic heat load from the muon beam decays. The magnets are based on Nb3Sn superconductor and designed to provide an operating field of 10 T in the 20-mm aperture with the critical current margin required for reliable machine operation. The magnet cross-sections were optimized to achieve the best possible field quality in the aperture occupied by beams. The developed mechanical structures provide adequate coil prestress and support at the maximum level of Lorentz forces in the coil. Magnet parameters are reported and compared with the requirements.