Stability of the Electrical Supply to Rack Room 1 of the MICE Experiment at the Rutherford-Appleton Laboratory in 2014

MICE, the international Muon Ionization Cooling Experiment, is a project to design, construct, operate and test a cell of a muon ionisation cooling channel that may be used for a future Muon Collider or Neutrino Factory.The object of the MICE experiment is to take a beam of muons created from protons from the ISIS accelerator hitting a titanium target and to show that it is possible to create a narrow intense beam, using detector techniques from particle physics.Mains power fluctuations can obviously affect the experiment directly, e.g. a power drop-out will disable plant, but much of the equipment also depends on reference voltages that may be affected by mains power fluctuations. Stability of the mains power in Rack Room 1 in July 2014 was monitored using a similar approach to [1].The power supply voltage in Rack Room 1 was sampled by querying one of the UPS units. The UPS (APC SmartUPS 3000XL) reports three values for each 60-second interval (defined internally by the UPS):- the maximum supply voltage during that interval- the minimum supply voltage during that interval- the "instantaneous" supply voltage at the end of that intervalThe granularity of the measurement is coarse, about 1.5 V. Voltage spikes will be seen as high values of the maximum voltage, and supply dips as low values of the minimum voltage.The UPS was monitored using the Network UPS Tools ("NUT") framework [2]. A cron job queried NUT once a minute and appended the values to a text file (in CSV format).MaterialMainsVoltage_RR1-2014.zip (20/08/2019): collection of CSV format text files containing mains voltage history.This item forms part of the MICE Miscellaneous data, DOI: 10.17633/rd.brunel.5024885 ( Construction/Beamline/Other/StabilityOfTheElectricalSupplyToRackRoom1OfTheMICEExperimentAtTheRutherford-AppletonLaboratoryIn2014.zip ).AcknowledgementsHenry Nebrensky configured the MICE NUT instance, and wrote the query script.DisclaimerThis data is provided as-is. The format of the date/timestamp changes between files, as I tried to find one that Microsoft Excel would parse correctly.References1. H. Nebrensky and R. Lopes: "Stability of the Electrical Supply to Grid Computing Facilities in Tower B, Brunel University in 2009" DOI: 10.17633/rd.brunel.7152089 (2018)2. "Network UPS Tools" https://networkupstools.org/

MICE（国际缪子电离冷却实验，Muon Ionization Cooling Experiment）是一项旨在设计、建造、运行并测试缪子电离冷却通道单元的项目，该通道可应用于未来的缪子对撞机或中微子工厂。
本实验的目标是获取由ISIS加速器轰击钛靶产生的缪子束流，并借助粒子物理探测器技术，验证制备窄化强流缪子束流的可行性。
市电电源波动显然会直接影响实验：例如断电会导致设备停机，且多数实验设备依赖的参考电压也可能受市电波动干扰。2014年7月，研究团队采用与文献[1]类似的方法，对1号机架室的市电稳定性进行了监测。
研究团队通过查询其中一台不间断电源（Uninterruptible Power Supply，简称UPS）单元，对1号机架室的电源电压进行采样。该APC SmartUPS 3000XL型UPS会为其内部定义的每个60秒采样周期报告三项数据：该周期内的最大电源电压、该周期内的最小电源电压，以及该周期结束时的“瞬时”电源电压。该测量的采样粒度较粗，约为1.5 V。电压尖峰会表现为该周期内最大电压的高值，电源电压骤降则会表现为最小电压的低值。
研究团队通过网络UPS工具（Network UPS Tools，简称NUT）框架[2]对UPS进行监控，借助cron定时任务每分钟查询一次NUT，并将采集到的数据以逗号分隔值（Comma-Separated Values，简称CSV）格式追加至文本文件中。
数据集文件MainsVoltage_RR1-2014.zip（2019年8月20日）包含多份CSV格式文本文件，记录了市电电压的历史变化情况。该数据集隶属于MICE杂项数据，DOI：10.17633/rd.brunel.5024885，对应文件路径为Construction/Beamline/Other/StabilityOfTheElectricalSupplyToRackRoom1OfTheMICEExperimentAtTheRutherford-AppletonLaboratoryIn2014.zip。
致谢
亨利·内布伦斯基（Henry Nebrensky）完成了MICE的NUT实例配置，并编写了查询脚本。
免责声明
本数据按“现状”提供。由于作者曾尝试寻找可被Microsoft Excel正确解析的日期时间戳格式，不同文件的日期/时间戳格式存在差异。
参考文献
1. H. Nebrensky与R. Lopes：《2009年布鲁内尔大学B号楼网格计算设施的电源稳定性》，DOI: 10.17633/rd.brunel.7152089 (2018)
2. "网络UPS工具"，https://networkupstools.org/