Møller与Compton电子束极化仪的新颖比较
仪器与探测器
2017-03-08 v2 核实验
摘要
我们对基于Møller散射和Compton散射的电子束极化仪进行了一次新颖的比较。在杰斐逊实验室C厅的Q_weak实验期间，于低束流（<5 μA）下进行了一系列电子束极化测量。这些低流强测量被常规高流强（180 μA）运行的Compton极化仪测量所包围。所有测量结果在1%或更小的实验不确定度内一致，表明电子极化不显著依赖于束流强度。这一结果增强了人们对将低束流下进行的Møller测量应用于更高束流下物理实验这一常见做法的信心。两种基于独立物理过程的极化测量技术之间的一致性，为未来要求极化测量精度优于1%的精密不对称性测量设定了一个重要基准。
引用
@article{arxiv.1610.06083,
title = {A novel comparison of M{\o}ller and Compton electron-beam polarimeters},
author = {J. A. Magee and A. Narayan and D. Jones and R. Beminiwattha and J. C. Cornejo and M. M. Dalton and W. Deconinck and D. Dutta and D. Gaskell and J. W. Martin and K. D. Paschke and V. Tvaskis and A. Asaturyan and J. Benesch and G. Cates and B. S. Cavness and L. A. Dillon-Townes and G. Hays and J. Hoskins and E. Ihloff and R. Jones and P. M. King and S. Kowalski and L. Kurchaninov and L. Lee and A. McCreary and M. McDonald and A. Micherdzinska and A. Mkrtchyan and H. Mkrtchyan and V. Nelyubin and S. Page and W. D. Ramsay and P. Solvignon and D. Storey and W. A. Tobias and E. Urban and C. Vidal and B. Waidyawansa and P. Wang and S. Zhamkotchyan},
journal= {arXiv preprint arXiv:1610.06083},
year = {2017}
}