Jefferson实验室Qweak实验的光束调制系统
Beam Modulation System for the Qweak Experiment at Jefferson Lab
摘要：
Qweak实验旨在通过弹性e+p散射中的宇称违反不对称性（$\sim$ -200 ppb）测量质子的弱电荷至4%。散射率主要受五个射束参数的影响：水平位置（X）、角度（X '）、垂直位置（Y）、角度（Y'）和射束能量（E）。当光束偏振反转时，这些参数的变化将产生虚假的不对称性。为了测量探测器的灵敏度，我们使用霍尔C束线中的四个空心偶极子以及使用超导RF腔的束能量来调制X、X '、Y、Y'。然后使用线性回归来消除虚假的不对称性。光束调制系统还被证明对于跟踪霍尔C光束线光学器件的变化（包括目标处的色散）是有价值的。
英文摘要：
The Qweak experiment aims to measure the weak charge of the proton to 4% via the parity-violating asymmetry ($\sim$-200 ppb) in elastic e+p scattering. The scattering rate is largely influenced by five beam parameters: horizontal position (X), angle (X'), vertical position (Y), angle (Y'), and beam energy (E). Changes in these parameters when the beam polarization is reversed will create a false asymmetry. To measure the detector sensitivities, we modulate X, X', Y, Y' using four air-core dipoles in the Hall C beamline as well as beam energy with a superconducting RF cavity. Linear regression is then used to remove the false asymmetry. The beam modulation system has also proven valuable for tracking changes in the Hall-C beamline optics including dispersion at the target.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
