Construction and preliminary observation of high sensitive solar neutron detection system

本项目的目的是通过观测高能离子在太阳大气中产生的中子的能量分布和时间分布，研究太阳耀斑中高能离子的加速机制。由于中子不受太阳和地球之间磁场的影响，这些中子预计将为我们带来有关离子加速的信息。在这笔赠款中，为了在Sierra Negra顶部安装粒子跟踪探测器（SciBar），该探测器已用于加速器实验作为用于上述目的的观测设备，已在墨西哥的一个地点（海拔4600米）使用原型探测器进行了初步观测。通过将观测结果与计算机模拟结果进行比较，进行了检查和设计，建立并启动了高灵敏度太阳中子探测系统（SciCRT）。

The purpose of this project is to investigate the acceleration mechanisms of high energy ions at Solar flares by observing energy distributions and time profiles of neutrons produced in the Solar atmoshpere by the accelerated ions. These neutrons are expected to bring us information concerning the accelerations of ions, since neutrons are not affected by the magnetic field between the Sun and the Earth.During this grant, in order to set a particle tracking detector (SciBar), which had been used at the accelerator experiment, on the top of Sierra Negra (4600 m above sea level) in Mexico as a observational equipment for the above purpose, preliminary observation at the site using a prototype detector had been done. After examinations and designings by comparing the results of the observations with computer simulations, a high sensitivity solar neutron detection system (SciCRT) has been constructed and started.