Status of X-ray microcalorimeter development at ISAS

A superconducting phase-transition microcalorimeter is a promising detector for high resolution X-ray spectroscopy. We are developing such a detector for future Japanese X-ray astronomy missions. In our design, a tin absorber is electrodeposited as a mushroom structure to achieve a high covering fra...

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Bibliographic Details
Main Authors: Fujimoto, R, Mitsuda, K, Iyomoto, N, Audley, M D, Miyazaki, T, Oshima, T, Yamazaki, M, Futamoto, K, Takei, Y, Ishisaki, Y
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:A superconducting phase-transition microcalorimeter is a promising detector for high resolution X-ray spectroscopy. We are developing such a detector for future Japanese X-ray astronomy missions. In our design, a tin absorber is electrodeposited as a mushroom structure to achieve a high covering fraction. We have succeeded in detecting X-rays with the first model of our calorimeter with an electrodeposited absorber, though the energy resolution was limited due to residual resist. We are also developing a phase-transition microcalorimeter with a low transition temperature. We describe the results of these experiments, and discuss the limiting factors of their performance. (Author)
ISSN:0094-243X