Design of a μSR spectrometer with ultrahigh arrays at China Spallation Neutron Source
文献类型：期刊论文
| 作者 | Dong, J. ; Pan, Z.; Yang, T.; Lin, Z.; Wang, Z.; He, Z.; Chen, Z.; Jing, H.,; Tang, J.,; Liu, J.D.
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| 刊名 | Journal of Instrumentation
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| 出版日期 | 2022 |
| 卷号 | 17期号:11页码:11008 |
| DOI | 10.1088/1748-0221/17/11/T11008 |
| 文献子类 | Article |
| 英文摘要 | A new muon source has been proposed to conduct muon spin rotation/relaxation/ resonance (μSR) measurements at China Spallation Neutron Source (CSNS). Only 1 Hz of the CSNS proton beams (25 Hz in total) will be allocated for muon production. To make better use of muons in every pulse, an ultrahigh-array μSR spectrometer (UHAM) with thousands of detector channels is under design. Due to such a high granularity of detectors, multiple counting events generated from particle scattering or spiral motions of positrons in a strong longitudinal field should be carefully considered in the design. Six different structures were modeled and simulated based on two types of angular orientations (parallel arrangement and pointing arrangement) and three kinds of spectrometer geometries (cylinder, cone and sphere). A quality factor, Q, was proposed to evaluate the performance of these structures by integrating their impacts on the overall asymmetry, the counting rate and the percentage of multiple counts. According to the simulation, the conical structure with detectors pointing to the sample has the highest Q in both zero field and longitudinal field. The results also show that all kinds of structures cannot be operated under strong longitudinal fields with a strength over 2 T. The full simulation of a μSR spectrometer can provide good guidance for the construction of the UHAM in the upcoming upgrade of CSNS. © 2022 IOP Publishing Ltd and Sissa Medialab. |
| 电子版国际标准刊号 | 17480221 |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299709]  |
| 专题 | 高能物理研究所_东莞分部 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 高能物理研究所_粒子天体物理中心 高能物理研究所_多学科研究中心 |
| 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 | Dong, J.,Pan, Z.,Yang, T.,et al. Design of a μSR spectrometer with ultrahigh arrays at China Spallation Neutron Source[J]. Journal of Instrumentation,2022,17(11):11008. |
| APA | Dong, J..,Pan, Z..,Yang, T..,Lin, Z..,Wang, Z..,...&Ye, B.J..(2022).Design of a μSR spectrometer with ultrahigh arrays at China Spallation Neutron Source.Journal of Instrumentation,17(11),11008. |
| MLA | Dong, J.,et al."Design of a μSR spectrometer with ultrahigh arrays at China Spallation Neutron Source".Journal of Instrumentation 17.11(2022):11008. |
入库方式： OAI收割
来源：高能物理研究所
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