论文标题
解决Muon Collider Higgs工厂的关键问题：光学，磁铁及其保护，检测器背景
Solving Critical Problems of the Muon Collider Higgs Factory: Optics, Magnets and their Protection, Detector Backgrounds
论文作者
论文摘要
一个低能的中型亮度muon对撞机（MC）被研究为可能的希格斯工厂（HF）。来自Muon衰减的电子将在HF撞机环的超导磁铁中沉积超过300 kW。这对在MC存储环（SR）和相互作用区域（IR）中使用的超导（SC）磁体构成了重大挑战。提出了磁铁设计，该设计提供了较大的孔径，可提供高孔径，以适应大尺寸的亮束（由于β*较低），以及一个冷却系统，可拦截衰减电子引起的阵雨的大热沉积。在MC SR晶格元件中的热沉积分布需要大量磁铁，以适应厚的高Z吸收剂以保护SC线圈。基于已发达的MARS15模型和密集的模拟，为对撞机SR和IR设计了复杂的辐射保护系统，使超导线圈中的峰值密度以下是淬火限制以下，并将冷质量中的动态热量减少100倍。每个磁铁。这些还减少了对撞机检测器中的背景粒子通量。
A low-energy medium-luminosity Muon Collider (MC) is being studied as a possible Higgs Factory (HF). Electrons from muon decays will deposit more than 300 kW in superconducting magnets of the HF collider ring. This imposes significant challenges to superconducting (SC) magnets used in the MC storage ring (SR) and interaction regions (IR). Magnet designs are proposed which provide high operating gradient and magnetic field in a large aperture to accommodate the large size of muon beams (due to low beta*), as well as a cooling system to intercept the large heat deposition from the showers induced by decay electrons. The distribution of heat deposition in the MC SR lattice elements requires large-aperture magnets in order to accommodate thick high-Z absorbers to protect the SC coils. Based on the developed MARS15 model and intensive simulations, a sophisticated radiation protection system was designed for the collider SR and IR to bring the peak power density in the superconducting coils below the quench limit and reduce the dynamic heat deposition in the cold mass by a factor of 100. The system consists of tight tungsten masks in the magnet interconnect regions and elliptical tungsten liners in the magnet aperture optimized individually for each magnet. These also reduce the background particle fluxes in the collider detector.
