Speaker
Mr.
Pavel Buzhan
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
Description
Geiger discharge for a single cell and real SiPMs for under- and oversaturation light intensities has been investigated.
It has been shown that not only signal amplitude but even signal charge rises with increasing of light intensity for single SiPM cell illuminated by high intensity light flash for constant applied overvoltage.
This effect can be explained by creation of multiple avalanche starting points inside of a SiPM cell which leads to the development of multiple avalanches inside of the cell and thus to a higher discharge current when compared with the case of a single avalanche per cell.
Due to this effect a real SiPM device consisting of many connected together cells and illuminated by high light intensity pulse produces a signal with amplitude that is higher then A1*N, where A1 – one-cell signal amplitude for low light conditions, N - total number of cells inside the SiPM.
| Presentation type | Section talk (10+5 min) |
|---|
Primary author
Mr.
Pavel Buzhan
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
Co-authors
Mr.
Alexey Stifutkin
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
Mr.
Andrey Ilyin
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
Dr.
Elena Popova
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
