Precision Measurement of the Muon Anomalous Magnetic Moment

μ子反常磁矩的精密测量

基本信息

批准号：
1807266
负责人：
Tim Gorringe
金额：
$ 55.5万
依托单位：
University of Kentucky Research Foundation
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2022-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1807266&HistoricalAwards=false
关键词：
Precision Measurement Muon Anomalous Magnetic

项目摘要

This award supports continuing research activities to precisely measure characteristics of an elementary particle called the muon, which is similar to the electron but with larger mass. The experiment takes place at Fermi National Accelerator Facility (Fermilab) near Chicago, Illinois. Precise experimental tests of fundamental particle properties are now a well-established way to search for new laws of nature beyond our current physical knowledge. The measurement will address an intriguing discrepancy between a prior measurement and the Standard Model prediction of the muon?s characteristics and is sensitive to new particles and undetected forces that uniquely complement other efforts at high energy colliders and elsewhere. The PI will continue his involvement of high school students, physics majors, graduate students and post-doctoral researchers in research activities. The group's involvement in high-performance data acquisition, analysis and simulations will expose students to many aspects of innovative computer and telecommunications technology. The muon g-2 experiment will measure the muon anomalous magnetic moment to 140 ppb; a four-fold improvement over the prior BNL E821 experiment. The measurement will address the longstanding discrepancy of ~3.5 sigma between the previous BNL E821 measurement and the Standard Model prediction. It represents a key test of the Standard Model and has broad sensitivity to new particles and interactions beyond the Standard Model. It complements other searches for new physics at the energy, intensity and cosmic frontiers. The muon g-2 project has involved the relocation of the E821 muon storage ring from Brookhaven National Laboratory to Fermilab as well as major upgrades of the detector, electronics and acquisition sub-systems. The installation of the storage ring and its associated instrumentation on the Fermilab muon campus was completed in 2017. The first data taking run took place from November, 2017 to July, 2018 and has already exceeded the statistics of prior BNL E821. Two further majo running periods over the next three years should achieve the goals of collecting about 21 times the statistics of BNL E821. The PI's group has been, and continues to be, the lead for both the 20 GByte/sec, 100 TFlop, g-2 data readout and processing system and the infrastructure, analysis and simulation effort for the Q-method determination of the anomalous precession frequency. About one third of the group's overall effort will be associated with data acquisition responsibilities and two thirds of the overall effort associated with Q-method analysis responsibilities.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持持续的研究活动，以衡量称为MUON的基本粒子的特征，该粒子类似于电子，但具有较大的质量。该实验在伊利诺伊州芝加哥附近的费米国家加速器设施（Fermilab）进行。现在，基本粒子特性的精确实验测试是一种良好的方法，可以在我们当前的物理知识之外寻找新的自然定律。该测量方法将解决先前测量和MUON特征的标准模型预测之间的有趣差异，并且对新颗粒和未发现的力敏感，这些粒子和未发现的力是独特地补充了高能量攻针和其他地方的其他努力。 PI将继续他参与高中生，物理专业，研究生和博士后研究人员的研究活动。该小组参与高性能数据获取，分析和模拟将使学生了解创新的计算机和电信技术的许多方面。 MUON G-2实验将测量MUON异常磁矩至140 ppb。与先前的BNL E821实验相比，改进了四倍。该测量将解决以前的BNL E821测量和标准模型预测之间的长期差异。它代表了标准模型的关键测试，并且对标准模型以外的新粒子和相互作用具有广泛的敏感性。它补充了在能量，强度和宇宙边界上寻找新物理学的其他搜索。 MUON G-2项目涉及将E821 MUON存储环从布鲁克黑文国家实验室搬迁到费米拉布，以及对检测器，电子和采集子系统的重大升级。 2017年完成了存储环及其相关仪器在Fermilab Muon校园上的安装。首次获取数据运行是从2017年11月到2018年7月进行的，已经超过了先前的BNL E821的统计数据。在接下来的三年中，另外两个Majo的跑步期应该实现收集BNL E821统计数据的21倍的目标。 PI的组曾经并且一直是20 GBYTE/SEC，100 TFLOP，G-2数据读数和处理系统的领导，以及用于确定异常进液频率的基础架构，分析和仿真工作。该小组的总体努力的大约三分之一将与数据获取责任以及与Q-Method分析责任相关的总体努力的三分之二有关。该奖项反映了NSF的法定任务，并且认为值得通过基金会的知识分子优点和更广泛的影响审查标准通过评估来获得支持。