自旋调谐映射作为探究储存环中自旋动力学的新工具
加速器物理
2017-07-12 v3 核实验
仪器与探测器
摘要
诸如利用储存环搜寻带电粒子电偶极矩的精密实验，要求以前所未有的精度理解自旋动力学。最终目标是测量电偶极矩，其灵敏度需比所储存粒子的磁偶极矩高 15 个数量级。这一艰巨任务要求理解由储存环杂散磁场中自旋旋转产生的电偶极信号背景。其中一个对环中缺陷磁场特别敏感的可观测量是稳定自旋轴的角取向。迄今为止，稳定自旋轴从未在实验上被测定，此外 JEDI 合作组首次成功量化了由储存环水平与纵向缺陷磁场中磁偶极矩的虚假旋转所产生的背景信号。为此，我们开发了一种基于加速器对人工施加纵向磁场的自旋调谐响应的新方法。这一被称为自旋调谐映射的新技术，成为探究储存环中自旋动力学的强大工具。该技术于 2014 年在冷却同步加速器 COSY 上进行了实验测试，并首次以优于 rad 的前所未有的精度测定了环中两个不同位置的稳定自旋轴角取向。
引用
@article{arxiv.1703.01295,
title = {Spin tune mapping as a novel tool to probe the spin dynamics in storage rings},
author = {A. Saleev and N. N. Nikolaev and F. Rathmann and W. Augustyniak and Z. Bagdasarian and M. Bai and M. Berz and S. Chekmenev and G. Ciullo and S. Dymov and D. Eversmann and M. Gaisser and R. Gebel and K. Grigoryev and D. Grzonka and G. Guidoboni and D. Heberling and N. Hempelmann and V. Hejny and J. Hetzel and F. Hinder and A. Kacharava and V. Kamerdzhiev and I. Keshelashvili and I. Koop and A. Kulikov and A. Lehrach and P. Lenisa and N. Lomidze and B. Lorentz and P. Maanen and G. Macharashvili and D. Mchedlishvili and A. Magiera and S. Mey and A. Nass and A. Pesce and D. Prasuhn and J. Pretz and M. Rosenthal and V. Schmidt and Y. Semertzidis and Y. Senichev and V. Shmakova and A. Silenko and J. Slim and A. Stahl and R. Stassen and E. Stephenson and H. Stockhorst and H. Ströher and P. Thörngren Engblom and M. Tabidze and G. Tagliente and R. Talman and F. Trinkel and Yu. Uzikov and Yu. Valdau and E. Valetov and A. Vassiliev and C. Weidemann and A. Wrońska and P. Wüstner and P. Zuprański},
journal= {arXiv preprint arXiv:1703.01295},
year = {2017}
}
备注
32 pages, 15 figures, 7 tables