[16p-Z28-1~21] 2.2 Detection systems

[16p-Z28-10] Measurements of 57.6 keV X-rays with MPPC scintillation detector using HfO₂-PLS:
its properties with different MPPC pixel sizes

〇Shunji Kishimoto¹, Akehiro Toda² (1.KEK IMSS, 2.Tokyo Printing Ink)

Keywords:plastic scintillator, Geiger-mode APD, X-rays

We produced an X-ray scintillation detector with HfO₂ nanoparticle-loaded plastic scintillator, which has a Geiger-mode avalanche photodiode (MPPC) as photodetector. Its properties were evaluated with different pixel sizes of MPPC, using 57.6-keV X-rays which energy is the same as the excited level of I-127. We measured the pulse height and time spectra, and also the count rate against the input photon rate.