Abstract
The hard X-ray imager (HXI) and soft gamma-ray detector (SGD) onboard Astro-H observe astronomical objects with high sensitivity in the hard X-ray (5-80 keV) and soft gamma-ray (40-600 keV) energy bands. To achieve this high sensitivity, background rejection is essential, and these detectors are surrounded by large and thick bismuth germinate scintillators as an active shield. We have developed adequate trigger logic for both the HXI and SGD to process signals from main detector and BGO shield simultaneously and then we optimized the trigger delay and width, with consideration of the trigger latch efficiency. The shield detector system performs well, even after it is assembled as the HXI sensor. The energy threshold maintains the same level as that observed during the prototype development phase, and the experimental room background level of the main detector is successfully reduced by our optimized trigger timing.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | SPIE |
| Volume | 9144 |
| ISBN (Print) | 9780819496126 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray - Montreal Duration: 2014 Jun 22 → 2014 Jun 26 |
Other
| Other | Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray |
|---|---|
| City | Montreal |
| Period | 14/6/22 → 14/6/26 |
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Keywords
- active shield
- ASTRO-H
- FPGA
- gamma-ray
- HXI
- SGD
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Development and verification of signal processing system of BGO active shield onboard Astro-H. / Ohno, Masanori; Tokuda, Shin'Ya; Kawano, Takafumi; Furui, Shunya; Edahiro, Ikumi; Takahashi, Hiromitsu; Goto, Kunihiro; Fukazawa, Yasushi; Murakami, Hiroaki; Kobayashi, Syogo; Sakurai, Soki; Sasano, Makoto; Torii, Shunsuke; Nakano, Toshio; Ono, Ko; Miyake, Kazuma; Nishida, Terukazu; Nakazawa, Kazuhiro; Makishima, Kazuo; Hagino, Kouichi; Yuasa, Takayuki; Odaka, Hirokazu; Sato, Rie; Watanabe, Shin; Kokubun, Motohide; Sato, Goro; Kataoka, Jun; Saito, Tatsuhiko; Yamaoka, Kazutaka; Tajima, Hiroyasu; Yatsu, Yoichi; Nakamori, Takeshi; Uchiyama, Hideki; Yonetoku, Daisuke.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9144 SPIE, 2014. 91445G.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Development and verification of signal processing system of BGO active shield onboard Astro-H
AU - Ohno, Masanori
AU - Tokuda, Shin'Ya
AU - Kawano, Takafumi
AU - Furui, Shunya
AU - Edahiro, Ikumi
AU - Takahashi, Hiromitsu
AU - Goto, Kunihiro
AU - Fukazawa, Yasushi
AU - Murakami, Hiroaki
AU - Kobayashi, Syogo
AU - Sakurai, Soki
AU - Sasano, Makoto
AU - Torii, Shunsuke
AU - Nakano, Toshio
AU - Ono, Ko
AU - Miyake, Kazuma
AU - Nishida, Terukazu
AU - Nakazawa, Kazuhiro
AU - Makishima, Kazuo
AU - Hagino, Kouichi
AU - Yuasa, Takayuki
AU - Odaka, Hirokazu
AU - Sato, Rie
AU - Watanabe, Shin
AU - Kokubun, Motohide
AU - Sato, Goro
AU - Kataoka, Jun
AU - Saito, Tatsuhiko
AU - Yamaoka, Kazutaka
AU - Tajima, Hiroyasu
AU - Yatsu, Yoichi
AU - Nakamori, Takeshi
AU - Uchiyama, Hideki
AU - Yonetoku, Daisuke
PY - 2014
Y1 - 2014
N2 - The hard X-ray imager (HXI) and soft gamma-ray detector (SGD) onboard Astro-H observe astronomical objects with high sensitivity in the hard X-ray (5-80 keV) and soft gamma-ray (40-600 keV) energy bands. To achieve this high sensitivity, background rejection is essential, and these detectors are surrounded by large and thick bismuth germinate scintillators as an active shield. We have developed adequate trigger logic for both the HXI and SGD to process signals from main detector and BGO shield simultaneously and then we optimized the trigger delay and width, with consideration of the trigger latch efficiency. The shield detector system performs well, even after it is assembled as the HXI sensor. The energy threshold maintains the same level as that observed during the prototype development phase, and the experimental room background level of the main detector is successfully reduced by our optimized trigger timing.
AB - The hard X-ray imager (HXI) and soft gamma-ray detector (SGD) onboard Astro-H observe astronomical objects with high sensitivity in the hard X-ray (5-80 keV) and soft gamma-ray (40-600 keV) energy bands. To achieve this high sensitivity, background rejection is essential, and these detectors are surrounded by large and thick bismuth germinate scintillators as an active shield. We have developed adequate trigger logic for both the HXI and SGD to process signals from main detector and BGO shield simultaneously and then we optimized the trigger delay and width, with consideration of the trigger latch efficiency. The shield detector system performs well, even after it is assembled as the HXI sensor. The energy threshold maintains the same level as that observed during the prototype development phase, and the experimental room background level of the main detector is successfully reduced by our optimized trigger timing.
KW - active shield
KW - ASTRO-H
KW - FPGA
KW - gamma-ray
KW - HXI
KW - SGD
UR - http://www.scopus.com/inward/record.url?scp=84922551405&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922551405&partnerID=8YFLogxK
U2 - 10.1117/12.2055676
DO - 10.1117/12.2055676
M3 - Conference contribution
AN - SCOPUS:84922551405
SN - 9780819496126
VL - 9144
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - SPIE
ER -