Design and performance of the balloon-borne magnetic spectrometer AESOP-Lite

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2024-11-19 DOI:10.1016/j.nima.2024.170077

John Clem , Paul Evenson , Robert P. Johnson , Brian Lucas , Pierre-Simon Mangeard , Scott Martin , Sarah Mechbal , James Roth

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Abstract

The Anti-Electron Sub-Orbital Payload Low Energy (AESOP-Lite) is designed to determine the source of the negative spectral index of cosmic-ray electrons below 100 MeV through a series of balloon flights. The entry telescope from the classic LEE (Low Electron Energy) instrument was directly integrated into AESOP-Lite, which utilizes a gas-Cherenkov and magnetic-spectrometer configuration to identify the particle type and measure its energy. Its first flight took place May 15–21, 2018 from Kiruna, Sweden accumulating roughly 130 h of exposure above 130,000 ft altitude before landing on Ellesmere Island, Canada. After recovery, work began to upgrade the instrument for its next flight, from McMurdo Station, Antarctica. In this paper, we report on its updated design, calibration and performance. This includes analyses of ground data taken during integration. The observed muon charge separation from ground runs is discussed and compared to the expected performance of the spectrometer, and the first test results of the new time-of-flight (TOF) system are presented. The energy resolution from track reconstruction algorithms and the energy-dependent geometry factor are tested with Monte Carlo simulations.

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气球载磁谱仪 AESOP-Lite 的设计和性能

低能量反电子亚轨道有效载荷（AESOP-Lite）旨在通过一系列气球飞行确定 100 MeV 以下宇宙射线电子负光谱指数的来源。经典的LEE（低电子能）仪器的入口望远镜被直接集成到AESOP-Lite中，它利用气体-切伦科夫和磁谱仪配置来识别粒子类型并测量其能量。它于2018年5月15日至21日从瑞典基律纳进行了首次飞行，在加拿大埃尔斯米尔岛着陆之前，在13万英尺的高空累计暴露了大约130小时。恢复后，我们开始为下一次从南极洲麦克默多站起飞的飞行升级仪器。在本文中，我们报告了仪器的更新设计、校准和性能。其中包括对集成过程中采集的地面数据的分析。本文讨论了从地面运行中观测到的μ介子电荷分离情况，并将其与光谱仪的预期性能进行了比较，还介绍了新的飞行时间（TOF）系统的首次测试结果。通过蒙特卡洛模拟测试了轨道重建算法的能量分辨率和与能量有关的几何系数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.