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SCENA: A simulation tool for radiation-induced gas scintillation

Maxime Lamotte 1, 2, * Grégoire de Izarra 1, 2 C. Jammes 1, 2 
* Corresponding author
1 LDCI - Laboratoire de Dosimétrie, de Contrôle-commande et Instrumentation
SPESI - Service Physique EXpérimentale, d'essais en Sûreté et d'Instrumentation : DEN/DER
Abstract : Within the framework of the dependable neutron ux instrumentation development for Sodium-cooled Fast Reactor (SFR) of Generation IV, the French Alternative Energies and Atomic Energy Commission (CEA) is investigating an innovative technology based on optical signals produced within an ionization chamber. In such gaseous detectors, neutrons interact with a ssile material, releasing heavy ions in the MeV-range, eventually leading to spontaneous photon emission in the ultraviolet to infrared range. In this paper, the process of light generation is analyzed through a newly-developed computer code named SCENA. Semi-empirical models for ion-togas energy exchange and secondary electron production are assessed. The output of the SCENA subroutines are satisfactory checked against other electron swarm simulation tools, experimental data and a theoretical gas model. SCENA is able to follow the cold-plasma created along a heavy ion slowing-down in space and time evolution. This performance is a key point in the development of optical ionization chambers.
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Submitted on : Tuesday, January 19, 2021 - 11:43:42 AM
Last modification on : Sunday, June 26, 2022 - 12:30:46 AM
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Maxime Lamotte, Grégoire de Izarra, C. Jammes. SCENA: A simulation tool for radiation-induced gas scintillation. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2020, 982, pp.164576. ⟨10.1016/j.nima.2020.164576⟩. ⟨cea-02931959⟩



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