Fast x-ray detector system with simultaneous measurement of timing and energy for a single photon

We developed a fast X-ray detector system for nuclear resonant scattering (NRS) experiments. Our system employs silicon avalanche photo-diode (Si-APD) as a fast X-ray sensor. The system is able to acquire both timing and energy of a single X-ray photon simultaneously in a high rate condition, 106 co...

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Veröffentlicht in:Review of scientific instruments 2017-06, Vol.88 (6), p.063105-063105
Hauptverfasser: Masuda, T., Okubo, S., Hara, H., Hiraki, T., Kitao, S., Miyamoto, Y., Okai, K., Ozaki, R., Sasao, N., Seto, M., Uetake, S., Yamaguchi, A., Yoda, Y., Yoshimi, A., Yoshimura, K.
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Sprache:eng
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Zusammenfassung:We developed a fast X-ray detector system for nuclear resonant scattering (NRS) experiments. Our system employs silicon avalanche photo-diode (Si-APD) as a fast X-ray sensor. The system is able to acquire both timing and energy of a single X-ray photon simultaneously in a high rate condition, 106 counts per second for one Si-APD. The performance of the system was investigated in SPring-8, a synchrotron radiation facility in Japan. Good time resolution of 120 ps (FWHM) was achieved with a slight tail distribution in the time spectrum by a level of 10−9 at 1 ns apart from the peak. Using this system, we successfully observed the NRS from the 26.27-keV level of mercury-201, which has a half-life of 630(50) ps. We also demonstrated the reduction of background events caused by radioactive decays in a radioactive sample by discriminating photon energy.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4989405