24 July 2014 Pre-flight performance of a micro-satellite TSUBAME for X-ray polarimetry of gamma-ray bursts
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To measure the polarization of gamma-ray bursts in X-ray energy band, we have developed a 50 kg micro-satellite named "SUBAME". The satellite has a compact and high-sensitive hard X-ray polarimeter employing newly-developed shock resistant multi-anode photomultipliers and Si avalanche photodiodes. Thanks to the ultra low-noise detectors and signal processors, the polarimeter can cover a wide energy range of 30􀀀200 keV even at 25°C with a high modulation factor of 62 %. TSUBAME is in the phase of final functional tests waiting for shipping to Baikonur and will be launched into a sun-synchronous orbit at an altitude of 700 km in late 2014. In this paper, the pre-ight performance of the gamma-ray detector system and the satellite bus system are presented.
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Yoichi Yatsu, Kei Ito, Shin Kurita, Makoto Arimoto, Nobuyuki Kawai, Masanori Matsushita, Shota Kawajiri, Shogo Kitamura, Saburo Matunaga, Shin'ichi Kimura, Jun Kataoka, Takeshi Nakamori, Sin Kubo, "Pre-flight performance of a micro-satellite TSUBAME for X-ray polarimetry of gamma-ray bursts", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91440L (24 July 2014); doi: 10.1117/12.2056275; http://dx.doi.org/10.1117/12.2056275






Gamma radiation

Signal processing

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