[21p-224B-1~8] 2.2 Detection systems

[21p-224B-3] Measurement of 73-keV X-ray time spectrum with a proportional-mode APD scintillation detector using Bi₂O₃-PLS

〇Shunji Kishimoto¹, Rie Haruki¹, Masanori Koshimizu², Fumiyuki Hiyama², Fumihiko Nishikido³ (1.KEK IMSS, 2.Tohoku Univ., 3.QST)

Keywords:scintillation detector, bismuth-oxide nanoparticle, plastic scintillator

We have developed a fast scintillation detector for high-energy X-rays using proportional-mode silicon avalanche photodiode (Si-APD). Evaluation of time response was carried out at beamline BL-14A of the Photon Factory ring for the new detector mounted with a Bi₂O₃ nano-particle doped plastic scintillator. We obtained a peak width (FWHM) of 0.30 ns for an X-ray peak in the time spectrum.