Si-detector telescope as real time monitoring devices for measurement of LET-distribution in the space

研制了一种由三个二维位置敏感硅探测器组成的新型望远镜，可测量0.2~400keV/um范围内的线性能量转移(LET)分布，作为载人飞船的实时辐射监测装置。首先介绍了LET测量的原理及其设计方法。其次，实验确定了适合LET测量的电学参数。最后，利用相对论重离子对望远镜性能进行了研究。这种类型的望远镜将于1997年5月在美国航天飞机(STS-84)上进行首次飞行测试。

A new telescope consisting of three two-dimensional position-sensitive silicon detectors which can measure the linear energy transfer (LET) distibution over the range from 0.2 to 400keV/mum has been developed as a real-time radiation monitor in manned spacecraft. First, the principle of LET measurement and its design method are described. Second, suitable electronic parameters for the LET measurement are experimentally determined. Finally, the telescope performance is investigated by using relativistic heavy ions. The first-flight test of this type of telescope on the US Space Shuttle (STS-84) is scheduled for May 1997.