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EnglishIn this work, we propose a new analog SiPM structure, characterized by the Passive Quenching Active Recharge operation of the microcells. The structure is obtained by including a MOSFET transistor close to each cell. The transistor is built without any changes to the standard SiPM micro-fabrication process and it does not significantly reduce the fill-factor of the device. We operated this detector in a periodic pulsed reset mode. Potential advantages of this approach are: reduction of the effective Dark Count Rate, strong suppression of the afterpulsing, very short pulse duration, lower fabrication cost. In this paper, we provide a preliminary characterization of the first 1x1 mm2 prototype of the structure, with 50x50 μm2 cells, fabricated at FBK. The measured duration of he single-cell response is 3.4 ns FWHM. Using a pulsed LED source, we were able to measure a very good photon counting resolution at a level of 18 detected photons and more, thanks to the absence of after pulses.
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| Titolo: | A Passive-Quenching Active-Recharge Analog Silicon Photomultiplier |
| Autori: | |
| Data di pubblicazione: | 2013 |
| Abstract: | In this work, we propose a new analog SiPM structure, characterized by the Passive Quenching Active Recharge operation of the microcells. The structure is obtained by including a MOSFET transistor close to each cell. The transistor is built without any changes to the standard SiPM micro-fabrication process and it does not significantly reduce the fill-factor of the device. We operated this detector in a periodic pulsed reset mode. Potential advantages of this approach are: reduction of the effective Dark Count Rate, strong suppression of the afterpulsing, very short pulse duration, lower fabrication cost. In this paper, we provide a preliminary characterization of the first 1x1 mm2 prototype of the structure, with 50x50 μm2 cells, fabricated at FBK. The measured duration of he single-cell response is 3.4 ns FWHM. Using a pulsed LED source, we were able to measure a very good photon counting resolution at a level of 18 detected photons and more, thanks to the absence of after pulses. |
| Handle: | http://hdl.handle.net/11582/207421 |
| ISBN: | 978-1-4799-0533-1 978-1-4799-0534-8 978-1-4799-3423-2 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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