Improved Fast Neutron Detector Based on Timepix and Plastic Scintillating Converter

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F17%3A00338434" target="_blank" >RIV/68407700:21670/17:00338434 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/NSSMIC.2016.8069789" target="_blank" >https://doi.org/10.1109/NSSMIC.2016.8069789</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/NSSMIC.2016.8069789" target="_blank" >10.1109/NSSMIC.2016.8069789</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improved Fast Neutron Detector Based on Timepix and Plastic Scintillating Converter

Popis výsledku v původním jazyce

The detection of fast neutrons by recoiled protons from a plastic scintillator situated very close to the pixel detector Timepix was introduced. The directional sensitivity of the detection was proven when signal generated by the scintillating light collected by silicon photomultipliers (SiPM) was used for triggering and synchronization of the system. In the proposed contribution the technique refines measuring the analog value of the scintillation light from all segments of an array 4x4 of silicon photomultipliers. Position and energy sensitivity of the silicon pixel detector Timepix is supplemented by position and energy sensitivity of the plastic scintillator. Each of 16 SiPM segments is connected to the independent channel of the spectroscopic ASIC VATA64HDR16. The ASIC provides trigger signal for the system including the pixel detector readout interface FITPix. Variable threshold allows changing the sensitive level and omitting SiPM dark noise or low-energetic particles. Sampled and hold analog value can be readout channel-by-channel through an analog multiplex and converted by an ADC for further digital processing. The whole activity is controlled by a FPGA. The results of measurements with a laboratory radioactive source (AmBe) will be presented.

Název v anglickém jazyce

Improved Fast Neutron Detector Based on Timepix and Plastic Scintillating Converter

Popis výsledku anglicky

The detection of fast neutrons by recoiled protons from a plastic scintillator situated very close to the pixel detector Timepix was introduced. The directional sensitivity of the detection was proven when signal generated by the scintillating light collected by silicon photomultipliers (SiPM) was used for triggering and synchronization of the system. In the proposed contribution the technique refines measuring the analog value of the scintillation light from all segments of an array 4x4 of silicon photomultipliers. Position and energy sensitivity of the silicon pixel detector Timepix is supplemented by position and energy sensitivity of the plastic scintillator. Each of 16 SiPM segments is connected to the independent channel of the spectroscopic ASIC VATA64HDR16. The ASIC provides trigger signal for the system including the pixel detector readout interface FITPix. Variable threshold allows changing the sensitive level and omitting SiPM dark noise or low-energetic particles. Sampled and hold analog value can be readout channel-by-channel through an analog multiplex and converted by an ADC for further digital processing. The whole activity is controlled by a FPGA. The results of measurements with a laboratory radioactive source (AmBe) will be presented.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016

ISBN

978-1-5090-1642-6

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

Institute of Electrical and Electronics Engineers, Inc.

Místo vydání

—

Místo konání akce

Steasbourg

Datum konání akce

29. 10. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000432419500411