Observation of Solar Neutron at Mt.Chacaltaya on the equator

对太阳耀斑产生的中子的观测可以提供有关耀斑中粒子加速到高能的独特信息。查卡尔塔亚的高度和位置为探测太阳中子提供了极好的条件。事实上，Chacaltaya望远镜的灵敏度是Norikura山2号望远镜的8倍，该望远镜是由日地环境实验室于1992年建造的。此外，当Norikura探测器进入夜晚时，Chacaltaya望远镜观察太阳。更多的望远镜被计划用一个新的网络系统覆盖地球。查卡尔塔亚实验有两个明显的特点。一个是测量入射中子的能量。这允许确定太阳中子的能谱作为时间的函数。另一个是中子是有区别的， 关于我们 艾德从带电粒子，这是不可能的，通过传统的中子监测器。在这个项目中，望远镜的建设和实验开始于1993财政年度。查卡尔塔亚实验的日常运作由玻利维亚科学家进行。在1994财政年度，实现了将在Chacaltaya获得的数据复制到工作站的硬盘上，该工作站属于圣安德烈斯大学。操作和分析的维护变得更加复杂。在1995财政年度，查卡尔塔亚的业务受到两名日本工作人员的两次检查。现在再次证实，查卡尔塔亚望远镜的操作是由玻利维亚科学家和技术人员维持的，数据在圣安德烈斯市长大学复制后每月发送到日本。在1995财政年度，用加速器对Chacaltaya探测器的性能进行了标定。预计在1997年底开始的下一个太阳活动周，将有更多的成果。少

Observation of neutrons from solar flares can provide unique information on the acceleration of particles to high energies in flares.A new experiment has been in operation since March 1994 at Mt.Chacaltaya, 5200m above sea level and near the equator (16ﾟ21'S and 68ﾟ08'W) in Bolivia. The height and the location of Chacaltaya provide excellent conditions for detecting solar neutrons. In fact the Chacaltaya telescope is 8 times more sensitive than the #2 telescope at Mt.Norikura, which was built in 1992 by Solar-Terrestrial Environment Laboratory. Furthermore, the Chacaltaya telescope observes the Sun when the Norikura detectors enter the night side. More telescopes are planed to cover the earth with a new network system.There are two distinguishable characteristics of the Chacaltaya experiment. One is that the energy of the incident neutrons is measured. This allows to determine the energy spectrum of the neutrons at the Sun as a function of time. Another is that neutrons are discriminat … More ed from charged particles, which is not possible by conventional neutron monitors.In this project, the telescope was constructed and the experiment started in fiscal year of 1993. The day to day operation of the Chacaltaya experiment is carried out by the Bolivian scientists. In fiscal year of 1994, it was realized to copy data obtained at Chacaltaya to the hard disk of the workstation, which belongs to Universidad Mayor de San Andres. And the maintenance of an operation and an analysis became more sophisticated. In fiscal year of 1995, the operation at Chacaltaya was checked twice by two Japanese staffs. It is now confirmed again that the operation of the telescope at Chacaltaya is maintained by the Bolivian scientists and technicians and data are sent to Japan every month after being copied at Universidad Mayor de San Andres. The performances of the Chacaltaya detector was also calibrated by an accelerator in fiscal year of 1995.More than fruitful results are expected in the next solar cycle which is estimated to begin at the end of 1997. Less