Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC
文献类型：期刊论文
| 作者 | Unzhakov, EV; Agnes, P; Albuquerque, IFM; Alex; er, T; Alton, AK; Asner, DM; Ave, MP; Back, HO; Baldin, B |
| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
 |
| 出版日期 | 2018 |
| 卷号 | 904页码:23-34 |
| ISSN号 | 0168-9002 |
| 关键词 | Electron diffusion constant Liquid argon Time projection chamber |
| DOI | 10.1016/j.nima.2018.06.077 |
| 文献子类 | Article |
| 英文摘要 | We report the measurement of the longitudinal diffusion constant in liquid argon with the DarkSide-50 dual-phase time projection chamber. The measurement is performed at drift electric fields of 100 V/cm, 150 V/cm, and 200 V/cm using high statistics Ar-39 decays from atmospheric argon. We derive an expression to describe the pulse shape of the electroluminescence signal (S2) in dual-phase TPCs. The derived S2 pulse shape is fit to events from the uppermost portion of the TPC in order to characterize the radial dependence of the signal. The results are provided as inputs to the measurement of the longitudinal diffusion constant D-L, which we find to be (4.12 +/- 0.09) cm(2)/s for a selection of 140 keV electron recoil events in 200 V/cm drift field and 2.8 kV/cm extraction field. To study the systematics of our measurement we examine data sets of varying event energy, field strength, and detector volume yielding a weighted average value for the diffusion constant of (4.09 +/- 0.12) cm(2)/s. The measured longitudinal diffusion constant is observed to have an energy dependence, and within the studied energy range the result is systematically lower than other results in the literature. |
| 电子版国际标准刊号 | 1872-9576 |
| WOS关键词 | TRANSPORT ; XENON ; AR-39 |
| WOS研究方向 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000442083200004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286228]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_实验物理中心 高能物理研究所_加速器中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Unzhakov, EV,Agnes, P,Albuquerque, IFM,et al. Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2018,904:23-34. |
| APA | Unzhakov, EV.,Agnes, P.,Albuquerque, IFM.,Alex.,er, T.,...&杨长根.(2018).Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,904,23-34. |
| MLA | Unzhakov, EV,et al."Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 904(2018):23-34. |
入库方式： OAI收割
来源：高能物理研究所
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