Speaker
Dr
Slawomir Mianowski
(National Centre for Nuclear Research)
Description
During my talk I would like to show and discuss results of evolution of MPPC properties during irradiation by neutrons. Two models of Multi-Pixel Photon Counters: S13360-3050CS and S13360-6050CS from Hamamatsu with different size (3x3 mm$^{-2}$ and 6x6 mm$^{-2}$, respectively) and the same subpixel pitch size (50 $\mu m$) were irradiated by neutrons from two sources: PuBe source with continuous energy spectrum up to 11~MeV and mono-energetic 4.8~MeV neutrons produced in (d,d) reaction. For both cases the neutron fluence/(MPPC size) in a range of 10$^{9}$ mm$^{-2}$ was achieved. The observed changes of current-voltage characteristics and breakdown voltage evolution for neutron fluence increase will be shown . The energy resolution degradation of 662 keV gamma line from $^{137}$Cs, obtained for non-irradiated GAGG scintillator, as a function of neutron fluence will be presented. Finally, calculated contribution of noise component in measured energy resolution will be also shown.
Primary author
Dr
Slawomir Mianowski
(National Centre for Nuclear Research)
Co-authors
Mr
Jaroslaw Baszak
(Hamamatsu Photonics Deutschland GmbH)
Prof.
Marek Moszynski
(National Centre for Nuclear Research)
Dr
Pawel Sibczynski
(National Centre for Nuclear Research)
Dr
Tomasz Szczesniak
(National Centre for Nuclear Research)
Dr
Yuri Gledenov
(Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics)
Dr
Yuri Kopatch
(Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics)
Mrs
Zuzanna Mianowska
(National Centre for Nuclear Research)
