Stratospheric LArTPC首次运行：eGRAMS气球飞行工程实验
天体物理仪器与方法
2024-12-24 v2 高能天体物理现象
摘要
GRAMS（Gamma-Ray and AntiMatter Survey）是一项新一代气球/卫星实验，旨在利用液氦氩离子探测器（LArTPC）同时探测宇宙中介米伽射线和通过反物质进行间接暗物质搜索。虽然LArTPC在粒子物理实验中广泛应用，但从未在气球高度运行过。2023年7月27日进行了一次小型LArTPC（eGRAMS）工程气球飞行，以建立在气球高度安全运行LArTPC的系统，并获取LArTPC的宇宙线数据。该飞行从日本航天航行研究机构（JAXA）在北海道的太iki航天研究场发射，飞行时长为3小时12分钟，其中在最高海拔28.9公里的44分钟平稳飞行期间，最终在海上成功着陆并回收。LArTPC在整个飞行期间成功运行，收集了约50万个包含μ子、质子及Compton散射伽马射线候选事件的宇宙线数据。这次 pioneering飞行表明了在高空环境下运行LArTPC的可行性，为未来的GRAMS任务铺平了道路，推动了MeV级伽马射线天文学和暗物质研究的能力提升。
引用
@article{arxiv.2409.13209,
title = {First operation of LArTPC in the stratosphere as an engineering GRAMS balloon flight (eGRAMS)},
author = {R. Nakajima and S. Arai and K. Aoyama and Y. Utsumi and T. Tamba and H. Odaka and M. Tanaka and K. Yorita and S. Arai and T. Aramaki and J. Asaadi and A. Bamba and N. Cannady and P. Coppi and G. De Nolfo and M. Errando and L. Fabris and T. Fujiwara and Y. Fukazawa and P. Ghosh and K. Hagino and T. Hakamata and U. Hijikata and N. Hiroshima and M. Ichihashi and Y. Ichinohe and Y. Inoue and K. Ishikawa and K. Ishiwata and T. Iwata and G. Karagiorgi and T. Kato and H. Kawamura and J. Krizmanic and J. Leyva and A. Malige and J. G. Mitchell and J. W. Mitchell and R. Mukherjee and K. Nakazawa and K. Okuma and K. Perez and N. Poudyal and I. Safa and M. Sasaki and W. Seligman and K. Shirahama and T. Shiraishi and S. Smith and Y. Suda and A. Suraj and H. Takahashi and S. Takashima and S. Tandon and R. Tatsumi and J. Tomsick and N. Tsuji and Y. Uchida and S. Watanabe and Y. Yano and K. Yawata and H. Yoneda and M. Yoshimoto and J. Zeng},
journal= {arXiv preprint arXiv:2409.13209},
year = {2024}
}