Ultimate neutrino flux optimisation and design of next-generation neutrino experiments in nuSTORM

存储μ子的中微子（nuSTORM）设施将提供一个由介子衰变产生的中微子束，这些介子被限制在一个动量可调的存储环中（1-6 GeV/c）。众所周知，光束的风味成分和能谱将允许在未来长期基线实验感兴趣的运动范围内进行最终精确的电子和介子-中微子散射测量。它们还将使中微子振荡的研究和超越标准模型现象的搜索成为可能，其灵敏度远远超过目前在FNAL建设的短基线实验。该设施的发展将极大地有利于粒子物理、核物理和加速器物理学界：中微子-核截面的精确测定将直接影响DUNE和Hyper-K对CP违逆的灵敏度，并将有助于核动力学描述的发展；nuSTORM靶复合体和存储环将成为介子对撞机研发的重要试验台。该项目将评估和优化nuSTORM在标准模型内外的中微子物理过程的能力。该学生将研究存储环中介子衰变产生的中微子，并确定nuSTORM对电子和介子中微子（和反中微子）横截面测量的灵敏度。将对Hyper-K和DUNE的预期进行定量比较。更具体地说，学生将开发nuSTORM最先进的模拟，以改进中微子束线的设计；探索产生单能电子中微子通量的新思路；执行中微子截面测量的灵敏度研究，巩固光束线和探测器设计。此外，在沃力克-牛津小组最近开发的重中性轻子（HNL）束流模拟的基础上，可以生成nuSTORM的HNL通量，并可以进行nuSTORM对HNL搜索的敏感性研究。学生将在华威大学和卢瑟福阿普尔顿实验室呆上一段时间。长期访问欧洲核子研究中心，与欧洲核子研究中心中微子组的物理学家一起工作是可能的。

The Neutrinos from Stored Muons (nuSTORM) facility will provide a neutrino beam from the decays of muons confined in a storage ring with tunable momentum (1-6 GeV/c). The well-known flavour composition and energy spectrum of the beam will allow ultimate precision electron- and muon-neutrino scattering measurements to be made over the kinematic range of interest to future long-baseline experiments. They will also enable studies of neutrino oscillations and searches for beyond the Standard Model phenomena with a sensitivity that goes significantly beyond that of the short-baseline experiments currently in construction at FNAL. The development of this facility will strongly benefit the particle physics, nuclear physics and accelerator physics communities: the precise determination of neutrino-nucleus cross-sections will have a direct impact on the sensitivity of DUNE and Hyper-K to CP violation and will contribute to the development of the description of the nuclear dynamics; the nuSTORM target complex and storage ring will form an essential testbed for muon-collider R&D.This project will evaluate and optimise the nuSTORM neutrino physics capabilities for processes in and beyond the Standard Model. The student will study the neutrino production from the muon decay in the storage ring and determine the sensitivity of nuSTORM to measurements of electron- and muon-neutrino (and antineutrino) cross-sections. Quantitative comparisons to expectations from Hyper-K and DUNE will be made. More specifically, the student will develop the nuSTORM state-of-the-art simulation to improve the design of the neutrino beamline; explore novel ideas to produce mono-energetic electron neutrino fluxes; perform sensitivity studies of neutrino cross-section measurements and consolidate the beamline and detector designs. Additionally, building on the Heavy Neutral Lepton (HNL) beam simulation recently developed by the Warwick-Oxford group, HNL fluxes from nuSTORM can be generated and studies of the sensitivity of nuSTORM to HNL searches can be performed.The student will spend time both at Warwick and at the Rutherford Appleton Laboratory. Long-term visits to CERN, working with physicists in the CERN neutrino group, are possible.