Collaborative Research: Development of a Particle Tracking System for the Qweak Experiment

威廉和玛丽学院将为杰斐逊实验室的Qweak实验设计和建造“区域3”跟踪室。这个突破性的实验将测量质子的弱电荷，作为对弱混合角sin 2（theta_W）的能量尺度依赖性的精确测试，从而提供了超越基础物理学标准模型的独特灵敏的物理探测器。 区域3线室是粒子跟踪系统的重要组成部分，需要精确测量弹性散射电子的运动学，以及用于实验背景的关键研究。该室将包括两套大型（2米长，30厘米宽）的垂直漂移室，共4个平面的x，y的位置与延迟线读出，提供了一个位置分辨率的顺序为100微米和角分辨率约1.5毫弧度。 第三区项目将有一个实质性的教育组成部分，因为本科生和研究生将密切参与所有阶段：设计，原型，建造和测试室。威廉玛丽已承诺新的资金支持为两个入门级的研究生为三年，研究生物理教育提供切实的影响这个项目。该项目将是理想的为本科生的高级论文和暑期研究项目生成主题。

The College of William and Mary will design and build the `Region 3'tracking chambers for the Qweak experiment at Jefferson Lab. Thisgroundbreaking experiment will measure the weak charge of the proton,as a precision test of the energy scale dependence of the weak mixingangle, sin2(theta_W), thus providing a uniquely sensitive probe of physicsbeyond the Standard Model of fundamental physics. The Region 3 wire chambers are an essential component of the particletracking system, which is needed in order to precisely measure the kinematics ofthe elastically scattered electrons, as well as for critical studiesof experimental backgrounds. The chambers will consist of two sets of large (2 m long, 30 cm wide) vertical drift chambers fora total of 4 planes of x,y positions with delay-line readout, providinga position resolution on the order of 100 microns and an angular resolution of about 1.5 milliradians. The Region 3 project will have a substantial educational component,as both undergraduate and graduate students will be intimatelyinvolved in all phases: design, prototyping, construction and testingof the chambers. William & Mary has committed new funding support forthis project for two entry-level graduate students for three years,providing tangible impact on graduate physics education. The projectwill be be ideal for generating topics for senior theses and summerresearch projects for undergraduate students.