Characterization of the response and the intrinsic efficiency of a 4He scintillation detector to fast mono-energetic neutrons
| Autor: | Andreas Zimbal, Daniele Marocco, Marco Riva, Quentin Ducasse, Salvatore Podda, B. Esposito |
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| Přispěvatelé: | Ducasse, Q., Esposito, B., Zimbal, A., Riva, M., Marocco, D., Podda, S. |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Nuclear and High Energy Physics Physics::Instrumentation and Detectors Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory Detector Monte Carlo method Mono-energetic neutrons Intrinsic efficiency Scintillator Neutron temperature Monte Carlo simulations Characterization (materials science) Ion Nuclear physics 4He scintillation detector Response function Neutron detection High Energy Physics::Experiment Neutron Nuclear Experiment Instrumentation PTB Ion Accelerator Facility |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 998:165168 |
| ISSN: | 0168-9002 |
| Popis: | The general features of a 4He gas scintillator prototype detector were characterized, as an alternative to liquid and plastic scintillators for a potential integration into the Radial Neutron Camera (RNC) in ITER. Two measurement campaigns were conducted at the Physikalisch-Technische Bundesanstalt (PTB) Ion Accelerator Facility (PIAF) in Germany using fast mono-energetic neutrons. Results from the first measurement campaign showed a light output response of the detector linear with the incident neutron energy, at least up to 14.8 MeV. A complete discrimination between neutrons and gammas was achieved by applying a 0.30 MeV threshold in terms of deposited neutron energy. The response function and the intrinsic efficiency of the detector were characterized in a second measurement campaign using collimated-beam conditions, similar to those expected in the RNC at ITER, to test the suitability of the detector in such a diagnostic system. The response function to 2.5 MeV and 14.8 MeV mono-energetic neutrons was measured and validated by Monte Carlo simulations. Some changes to the present prototype may be considered in the future to make it suitable as a neutron detector for the RNC at ITER. |
| Databáze: | OpenAIRE |
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