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Development of STJ as a New X-Ray Detector

Published online by Cambridge University Press:  25 May 2016

N. Y. Yamasaki ,
T. Ohashi ,
K. Kikuchi ,
H. Miyazaki ,
E. Rokutanda ,
A. Kushino  and
M. Kurakado
N. Y. Yamasaki
Affiliation:
Dept. of Phys., Tokyo Metropolitan Univ. 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-03, Japan
T. Ohashi
Affiliation:
Dept. of Phys., Tokyo Metropolitan Univ. 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-03, Japan
K. Kikuchi
Affiliation:
Dept. of Phys., Tokyo Metropolitan Univ. 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-03, Japan
H. Miyazaki
Affiliation:
Dept. of Phys., Tokyo Metropolitan Univ. 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-03, Japan
E. Rokutanda
Affiliation:
Dept. of Phys., Tokyo Metropolitan Univ. 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-03, Japan
A. Kushino
Affiliation:
Dept. of Phys., Tokyo Metropolitan Univ. 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-03, Japan
M. Kurakado
Affiliation:
Advanced Technology Research Laboratories, Nippon Steel Corporation 1618 Ida, Nakahara-ku, Kawasaki, Kanagawa 211, Japan

Extract

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STJs are promising X-ray detectors as high energy resolution spectrometers due to the small excitation energy to break the Cooper pairs to product detectable electrons. The expected energy resolution is about 5 eV for a 6 keV incident X-rays (see review by Kraus et al. and Esposito et al.). We have developed a large area (178 × 178μm2) Nb/Al/AlOX/Al/Nb STJs (Kurakado et al. 1993) and series-connected STJs with a position resolution of 35μm for α particles (Kurakado 1997) at Nippon Steel Corporation. As a focal plane detector in future X-ray missions, we are developing STJs whose targert characteristics are; an energy resolution of 20 eV at 6keV, an effective area of 1 cm2, and position resolution of 100μm.

Type
Session 2: Future Space Programs
Information
Symposium - International Astronomical Union , Volume 188: The Hot Universe , 1998 , pp. 335 - 336
Copyright
Copyright © Kluwer 1998 

References

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Kraus, H., Jochum, J., Kemmather, B., Gutsche, M., (1993) Progress on Detectors with Superconducting Tunnel junctions, SPIE 2006, 211 Google Scholar
Kurakado, M., Takahashi, T., Matsumura, A., (1993) High Resolution Detection of X-rays with a Nb-based STJ Detector, Journal of Low Temperature Physics , 93, 567 Google Scholar
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