First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment
First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment
复制标题
Mu 子电离冷却实验中首次逐个粒子测量发射度
DOI：
10.1140/epjc/s10052-019-6674-y
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Adams D
中科院分区：
文献类型：
--
作者：
Adams D
μ子电离冷却实验（MICE）合作旨在证明电离冷却的可行性，该技术被提议在未来的中微子工厂或μ子对撞机中冷却μ子束。发射度是从通过实验的μ子集合中测量的。一个纯μ介子系综选择使用粒子识别系统，可以有效地拒绝π介子和电子。在4 T螺线管磁场中，使用高精度的光纤跟踪器测量每个μ子的位置和动量。本文介绍了用于重建相空间分布的上游跟踪检测器的技术，并报告了第一个粒子的测量MICE μ子束的发射度作为μ子束动量的函数。
The Muon Ionization Cooling Experiment (MICE) collaboration seeks to demonstrate the feasibility of ionization cooling, the technique by which it is proposed to cool the muon beam at a future neutrino factory or muon collider. The emittance is measured from an ensemble of muons assembled from those that pass through the experiment. A pure muon ensemble is selected using a particle-identification system that can reject efficiently both pions and electrons. The position and momentum of each muon are measured using a high-precision scintillating-fibre tracker in a 4 T solenoidal magnetic field. This paper presents the techniques used to reconstruct the phase-space distributions in the upstream tracking detector and reports the first particle-by-particle measurement of the emittance of the MICE Muon Beam as a function of muon-beam momentum.