First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform
First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform
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DOI：
10.1088/1748-0221/15/12/p12004
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发表时间：
2020-12-01
影响因子：
1.3
通讯作者：
Zwaska, R.
中科院分区：
文献类型：
--
作者：
Abi, B.;Abud, A. Abed;Zwaska, R.
ProtoDUNE-SP探测器是一个单相液氩时间投影室，有效体积为7.2 x 6.1 x 7.0 m3。它被安装在欧洲核子研究中心中微子平台上，以一种特殊构造的光束提供带电的π介子、K介子、质子、μ介子和电子，动量范围在0.3 GeV/c到7 GeV/c之间。束线仪器提供精确的动量测量和粒子识别。ProtoDUNE-SP探测器是深层地下中微子实验的第一个远探测器模块的原型，它包含了为该模块设计的全尺寸组件。本文介绍了束线、时间投影室、光子探测器、宇宙线示踪器、信号处理和粒子重建。它介绍了ProtoDUNE-SP性能的第一个结果，包括噪声和增益测量，μ子，质子，π介子和电子的dE/dx校准，漂移电子寿命测量，光子探测器噪声，信号灵敏度和时间分辨率测量。测量值满足或超过DUNE远距离探测器的规格，在某些情况下大幅度。ProtoDUNE-SP于2018年开始成功运行，并产生了大量高质量数据样本，证明了单相远探测器设计的有效性。
The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber with an active volume of 7.2 x 6.1 x 7.0 m(3). It is installed at the CERN Neutrino Platform in a specially-constructed beam that delivers charged pions, kaons, protons, muons and electrons with momenta in the range 0.3 GeV/c to 7 GeV/c. Beam line instrumentation provides accurate momentum measurements and particle identification. The ProtoDUNE-SP detector is a prototype for the first far detector module of the Deep Underground Neutrino Experiment, and it incorporates full-size components as designed for that module. This paper describes the beam line, the time projection chamber, the photon detectors, the cosmic-ray tagger, the signal processing and particle reconstruction. It presents the first results on ProtoDUNE-SP's performance, including noise and gain measurements, dE/dx calibration for muons, protons, pions and electrons, drift electron lifetime measurements, and photon detector noise, signal sensitivity and time resolution measurements. The measured values meet or exceed the specifications for the DUNE far detector, in several cases by large margins. ProtoDUNE-SP's successful operation starting in 2018 and its production of large samples of high-quality data demonstrate the effectiveness of the single-phase far detector design.