Integration of the readout electronics for the Astro-E hard x-ray detector

Hideki Ozawa; Jun Kataoka; Toshio Murakami; Mutsumi Sugizaki; Tadayuki Takahashi; Kazutaka Yamaoka; Hajime Ezawa; Yasushi Fukazawa; Tuneyoshi Kamae; Kazuo Makishima; Tsunefumi Mizuno; Kazuhiro Nakazawa; Satoko Osone; Hirokazu Ikeda; Kiwamu Tsukada; Hidetoshi Kubo

doi:10.1117/12.277690

7 July 1997 Integration of the readout electronics for the Astro-E hard x-ray detector

Hideki Ozawa, Jun Kataoka, Toshio Murakami, Mutsumi Sugizaki, Tadayuki Takahashi, Kazutaka Yamaoka, Hajime Ezawa, Yasushi Fukazawa, Tuneyoshi Kamae, Kazuo Makishima, Tsunefumi Mizuno, Kazuhiro Nakazawa, Satoko Osone, Hirokazu Ikeda, Kiwamu Tsukada, Hidetoshi Kubo

Author Affiliations +

Proceedings Volume 3115, Hard X-Ray and Gamma-Ray Detector Physics, Optics, and Applications; (1997) https://doi.org/10.1117/12.277690
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We have developed the analog electronics of the ASTRO-E hard x-ray detector (HXD). The ASTRO-E is the fifth Japanese x-ray astronomy satellite scheduled for launch in 2000. Three experiments will be on board the satellite, one of which being the HXD. The detector consists of 16 units of well-type phoswich counters with silicon PIN diodes embedded therein, and covers the energy range of 10 approximately 600 keV with photon collecting area of about 350 cm². The readout circuit for the HXD handles many signal channels (96 channels in total) under the limitation of power consumption and size set by the satellite. To meet the limitations, we have developed two types of bipolar semicustom LSIs. One is the pulse-shape discriminator (PSD-LSI) for phoswich counters and the other is for silicon PIN diodes (PIN-LSI). The PSD-LSI selects clean GSO hits and reduces the off-aperture x rays and internal background of the detector down to 10^-5 c/s/cm²keV. One PIN-LSI handles signals from two PIN diodes, each consisting of an amplifier, a peak-hold circuit, and a comparator to trigger the readout system. Test pieces of these LSIs meet the specifications such as power consumptions and linearities. Using PIN-LSI, we could successfully obtain x-ray spectrum from ²⁴¹Am with a PIN diode.

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Hideki Ozawa, Jun Kataoka, Toshio Murakami, Mutsumi Sugizaki, Tadayuki Takahashi, Kazutaka Yamaoka, Hajime Ezawa, Yasushi Fukazawa, Tuneyoshi Kamae, Kazuo Makishima, Tsunefumi Mizuno, Kazuhiro Nakazawa, Satoko Osone, Hirokazu Ikeda, Kiwamu Tsukada, and Hidetoshi Kubo "Integration of the readout electronics for the Astro-E hard x-ray detector", Proc. SPIE 3115, Hard X-Ray and Gamma-Ray Detector Physics, Optics, and Applications, (7 July 1997); https://doi.org/10.1117/12.277690

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