Study of the trigger mode of LHAASO-KM2A
文献类型：期刊论文
| 作者 | LHAASO Collaboration |
| 刊名 | ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2018 |
| 卷号 | 103页码:41-48 |
| ISSN号 | 0927-6505 |
| 关键词 | Cosmic ray VHE gamma-ray Extensive air shower KM2A |
| DOI | 10.1016/j.astropartphys.2018.07.002 |
| 文献子类 | Article |
| 英文摘要 | The Large High Altitude Air Shower Observatory (LHAASO), built 4410 m a.s.l. near Daocheng, in the Sichuan province of China, is a new-generation complex EAS array. The Square Kilometre Array (KM2A), one of LHAASO's three detector arrays, is composed of 5195 electromagnetic particle detectors and 1171 muon detectors, which are distributed in an area of 1.3 km(2). A lower trigger threshold would increase the number of low-energy showers detected, although this would also import many noise events because of the numerous KM2A detectors. In this work, the KM2A trigger logic adopted a software trigger system. A toy simulation was developed to estimate the chance coincidence rate of noise hits. Taking into account the characteristics of real cosmic ray shower events, the trigger logic was investigated by adjusting the space and time windows simultaneously using the detector simulation sample. In order to improve trigger efficiency and reduce the effect of noise, an optimized trigger criterion was achieved. The KM2A threshold energy can be reduced to 5 TeV. The performance of KM2A with this trigger criterion is presented. The expectation on observation of sun shadow and cosmic ray large-scale anisotropy are also shown. (C) 2018 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1873-2852 |
| WOS关键词 | COSMIC-RAY ANISOTROPY ; MILAGRO ; TIBET |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000445718600006 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286369]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 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 | LHAASO Collaboration. Study of the trigger mode of LHAASO-KM2A[J]. ASTROPARTICLE PHYSICS,2018,103:41-48. |
| APA | LHAASO Collaboration.(2018).Study of the trigger mode of LHAASO-KM2A.ASTROPARTICLE PHYSICS,103,41-48. |
| MLA | LHAASO Collaboration."Study of the trigger mode of LHAASO-KM2A".ASTROPARTICLE PHYSICS 103(2018):41-48. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。