Pulse-shape discrimination of the new plastic scintillators in neutron–gamma mixed field using fast digitizer card
| Autor: | Zdeněk Matěj, Carlos Granja, Zdeněk Kopecký, Michael Solar, Jan Dressler, Martin Veškrna, Aleš Jančář |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Radiation 010308 nuclear & particles physics business.industry Resolution (electron density) Converters Scintillator 01 natural sciences law.invention Optics law 0103 physical sciences Wide dynamic range Van de Graaff generator Figure of merit Neutron 010306 general physics business Digital signal processing |
| Zdroj: | Radiation Physics and Chemistry. 116:60-64 |
| ISSN: | 0969-806X |
| Popis: | Recently invented plastic scintillator EJ-299-33 enables pulse-shape discrimination (PSD) and thus measurement of neutron and photon spectra in mixed fields. In this work we compare the PSD properties of EJ-299-33 plastic and the well-known NE-213 liquid scintillator in monoenergetic neutron fields generated by the Van de Graaff accelerator using the 3H(d, n)4He reaction. Pulses from the scintillators are processed by a newly developed digital measuring system employing the fast digitizer card. This card contains two AD converters connected to the measuring computer via 10 Gbps optical ethernet. The converters operate with a resolution of 12 bits and have two differential inputs with a sampling frequency 1 GHz. The resulting digital channels with different gains are merged into one composite channel with a higher digital resolution in a wide dynamic range of energies. Neutron signals are fully discriminated from gamma signals. Results are presented. |
| Databáze: | OpenAIRE |
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