Micro calorimeter array for space research

我们在以下四个不同领域取得了新的研究成果。(1)To为了获得高的量子效率，我们测量了铋膜的R-T关系和晶体结构，并制作了带有铋吸收体的TES量热计。能量分辨率保持在20 eV，但我们确定了限制能量分辨率的潜在问题; TES和吸收剂之间的边界处的热导率，以及Bisplane膜内部的热导率。(2)We制作了一个16 × 16格式的TES热量计阵列，每个像素上都有电极和X射线吸收器。这表明可以用我们的制造工艺制造这样的大阵列。(3)We研究了频分信号复用的理论问题，研制了满足理论研究要求的SQUID驱动电路。(4)We研究了与邻近星系团有关的暖/热星系际物质，这将有助于未来使用TES热量计阵列的天体物理使命。

We obtained new research results in the following four different areas. (1)To obtain a high quantum efficiency, we measured the R-T relation and crystal structure of Bismuth membranes, then fabricated TES calorimeters with a Bismuth absorber. The energy resolution remain at 20 eV, but we identified potential problems which restrict the energy resolution ; thermal conductivity at the boundary between the TES and the absorber, and thermal conductivity inside Bismuth membrane. (2)We fabricated a 16x16 format TES calorimeter array with electrodes and an X-ray absorber attached to every pixel., which demonstrates that such a large array can be fabricated with our fabrication process. (3)We investigated theoretical aspect of frequency division signal multiplex and developed a SQUID driver electronics which satisfies the requirement obtained from the theoretical study. (4)We studied warm/hot intergalactic matter associated with nearby cluster of galaxies, which will be useful for future astrophysical mission using the TES calorimeter arrays.