用于氚端点精密能量测量的电磁滤波器设计
天体物理仪器与方法
2019-05-01 v1 仪器与探测器
摘要
我们给出了 PTOLEMY 项目用于直接探测宇宙 neutrino 背景（CNB）的电磁滤波器的详细描述。从对轨道磁矩的初步估计出发，将 ExB 的高阶漂移过程配置为平衡电子的梯度-B 漂移运动，从而将轨迹导引至滤波器中间平面沿线的驻立电压势。作为沿滤波器长度的漂移距离的函数，滤波器以指数增长的精度聚焦于电子动能的横向速度分量。由此得到的总滤波器长度线性尺度相较先前的电磁滤波技术极为紧凑。电子动能的平行速度分量在静电谐波陷阱中随电子沿滤波器长度漂移而振荡。对相空间体积守恒的分析依据轨道磁矩的绝热不变性与遵循哈密顿系统刘维尔定理的能量守恒，验证了滤波器的预期行为。
引用
@article{arxiv.1810.06703,
title = {A Design for an Electromagnetic Filter for Precision Energy Measurements at the Tritium Endpoint},
author = {M. G. Betti and M. Biasotti and A. Bosca and F. Calle and J. Carabe-Lopez and G. Cavoto and C. Chang and W. Chung and A. G. Cocco and A. P. Colijn and J. Conrad and N. D'Ambrosio and P. F. de Salas and M. Faverzani and A. Ferella and E. Ferri and P. Garcia-Abia and G. Garcia Gomez-Tejedor and S. Gariazzo and F. Gatti and C. Gentile and A. Giachero and J. Gudmundsson and Y. Hochberg and Y. Kahn and M. Lisanti and C. Mancini-Terracciano and G. Mangano and L. E. Marcucci and C. Mariani and J. Martinez and M. Messina and A. Molinero-Vela and E. Monticone and A. Nucciotti and F. Pandolfi and S. Pastor and J. Pedros and C. Perez de los Heros and O. Pisanti and A. Polosa and A. Puiu and Y. Raitses and M. Rajteri and N. Rossi and R. Santorelli and K. Schaeffner and C. F. Strid and C. G. Tully and F. Zhao and K. M. Zurek},
journal= {arXiv preprint arXiv:1810.06703},
year = {2019}
}