Study of cooled solid state detectors for X-rays

我们研究了x射线光子固体探测器的新方法。我们特别研究了尚未建立的冷却固体探测器。首先，与相关领域的权威机构合作，对离子注入Si PIN探测器、约瑟夫森结型探测器和微比色仪进行了研究。参考这次检查，我们决定参与微量热量计的研究。这种新的探测器有几个基本问题需要实验检验。(1)应开发一种可靠、方便的低温恒温系统。我们购买了一种特殊设计的低温恒温器，它通过^3He的封闭系统工作。这适用于0.3 K的工作表面。我们已经研究了几种固体材料的基本性质。由此我们了解了固体材料在极低温下的基本性质。(2)我们还购买了一些低于1 K的低温温度计。我们改进了这些来检查热量计的基本性质，如热容和导热性。最后，我们得到了用射线或x射线照射的量热计的脉冲信号。我们建立了x射线光子微量热计的基本概念。因此，我们将在未来发展现有的成果，制造一种新型的热敏电阻。

We have studied on new approach of solid state detectors for X-ray photons. Especially we examined the cooled solid state detectors which have not yet been established. First of all ion-implanted Si PIN detectors, Josephson junction type detectors and micro-colorimeters were examined in collaboration with authorities of related fields. Refering this examination we decided that we were involved in study of the micro-calorimeter. This new detectors have several fundamental prolbems to be examined experimentally.(1) A reliable and handy cryostat system should be developed. We purchased a special desighed cryostat which works by means of a closed system of ^3He. This is useful for working surface of 0.3 K. We have examined basic properties of some kinds of solid material. Thus we have understood fundermental properties of solid material at very low temperature. (2) We also purchased some kinds of thermomitors for low temperature less than 1 K. We improved these to inspect fundamental properties such as heat capacity and thermal conductivity for calorimeters. (3) Finally we have obtained pulse signals from the calorimeter which is irradiated by -rays or X-rays.We have established basic concept of micro-calorimeters for X-ray photons. Therefore, we will develop the present result making a new type of thermisters in future.