论文标题
低能模块（LEM）：用于子MEV颗粒和伽马射线爆发检测的立方体光谱仪的开发
The Low Energy Module (LEM): development of a CubeSat spectrometer for sub-MeV particles and Gamma Ray Burst detection
论文作者
论文摘要
对于空间天气的表征，必须精确的低能电荷颗粒测量，并研究岩石圈和磁层之间的耦合，从而可以研究地震事件与范·艾伦带的颗粒沉淀之间的相关性。在这项工作中，显示了立方体空间光谱仪的项目，即低能模块（LEM）。该检测器将能够对低能电荷颗粒的基于事件的能量，到达方向以及低至0.1 MEV的组成进行基于事件的测量。此外，得益于CDZNTE迷你滤光度计，LEM光谱仪还允许在子MEV范围内进行光子检测，从而追求研究伽马射线爆发的性质。 LEM的粒子识别依赖于薄硅检测器执行的$ΔE -e $技术。该多功能光谱仪将适合10x10x10 $ \ text {cm}^3 $ cubesat框架，它将被构造为Trento大学，FBK和INFN-TIFPA之间的连接项目。为了满足尺寸和质量要求，基于主动粒子准则的创新方法是为LEM设计的，这避免了以前空间探测器的重型/笨重的被动准直仪。在本文中，我们将介绍LEM几何形状，其检测概念以及开发的Geant4模拟的结果。
Accurate flux measurement of low energy charged particles, trapped in the magnetosphere, is necessary for Space Weather characterization and to study the coupling between the lithosphere and magnetosphere, allowing the investigation of the correlations between seismic events and particle precipitation from Van Allen Belts. In this work, the project of a CubeSat space spectrometer, the Low Energy Module (LEM), is shown. The detector will be able to perform an event-based measurement of energy, arrival direction, and composition of low-energy charged particles down to 0.1 MeV. Moreover, thanks to a CdZnTe mini-calorimeter, the LEM spectrometer also allows photon detection in the sub-MeV range, joining the quest for the investigation of the nature of Gamma Ray Bursts. The particle identification of the LEM relies on the $ΔE - E$ technique performed by thin silicon detectors. This multipurpose spectrometer will fit within a 10x10x10 $\text{cm}^3$ CubeSat frame and it will be constructed as a joining project between the University of Trento, FBK, and INFN-TIFPA. To fulfil the size and mass requirements an innovative approach, based on active particle collimation, was designed for the LEM, this avoids heavy/bulky passive collimators of previous space detectors. In this paper, we will present the LEM geometry, its detection concept, and the results from the developed GEANT4 simulation.
