TY - JOUR
T1 - Studies on multiplication effect of noises of PPD, and a proposal of a new structure to improve the performance
AU - Oide, H.
AU - Murase, T.
AU - Otono, H.
AU - Yamashita, S.
N1 - Funding Information:
The authors wish to express our deep appreciation to the Hamamatsu Photonics K.K. and the KEK-DTP photon-sensor group members for their helpful discussions and suggestions. This work was supported by Grant-in-Aid for Exploratory Research 20654021 from the Japan Society for the Promotion of Science (JSPS) and by Grant-in-Aid for JSPS Fellows 20.4439.
PY - 2010/11/1
Y1 - 2010/11/1
N2 - Pixelated photon detectors (PPDs) are arrayed APDs operated in Geiger-mode. Multi-pixel photon counter (MPPC) is a PPD produced by Hamamatsu Photonics K.K. We performed measurement of total noise rate, random noise rate, after-pulsing, crosstalk, and relative photon detection efficiency for a 1600 px MPPC. The explosive increase of total noise rate to over-voltage is able to be understood of multiplication effect of after-pulsing and crosstalk. Considering the electric field structure of MPPC (p-on-n type) and Geiger-efficiency as a function of the position of initial pair creation, these characteristics are all able to be understood. One suggestion for p-on-n type PPD from these results is narrowing the depletion layer below the multiplication layer to reduce random noise and after-pulsing. Another proposal is to put additional buffer capacitance parallel to the diode to accomplish higher gain with lower over-voltage simultaneously with lower noise rate.
AB - Pixelated photon detectors (PPDs) are arrayed APDs operated in Geiger-mode. Multi-pixel photon counter (MPPC) is a PPD produced by Hamamatsu Photonics K.K. We performed measurement of total noise rate, random noise rate, after-pulsing, crosstalk, and relative photon detection efficiency for a 1600 px MPPC. The explosive increase of total noise rate to over-voltage is able to be understood of multiplication effect of after-pulsing and crosstalk. Considering the electric field structure of MPPC (p-on-n type) and Geiger-efficiency as a function of the position of initial pair creation, these characteristics are all able to be understood. One suggestion for p-on-n type PPD from these results is narrowing the depletion layer below the multiplication layer to reduce random noise and after-pulsing. Another proposal is to put additional buffer capacitance parallel to the diode to accomplish higher gain with lower over-voltage simultaneously with lower noise rate.
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U2 - 10.1016/j.nima.2010.02.236
DO - 10.1016/j.nima.2010.02.236
M3 - Article
AN - SCOPUS:77957838439
SN - 0168-9002
VL - 623
SP - 324
EP - 326
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1
ER -