Rejection of partial-discharge-induced pulses in fission chambers designed for sodium-cooled fast reactors

Hassen Hamrita (1) , C. Jammes (2) , Giacomo Galli (1) , Frédéric Lainé (1)

1 LCAE (CEA, LIST) - Laboratoire Capteurs et Architectures Electroniques (CEA, LIST)
2 DER - Département Etude des Réacteurs

Under given temperature and bias voltage conditions, partial discharges can create pulses in fission chambers. Based on experimental results, this phenomenon is in-depth investigated and discussed. A pulse-shape-analysis technique is proposed to discriminate neutron-induced pulses from partial-discharge-induced ones.

Mots clés: Sodium fast reactor; Neutron detection; High Temperature Fission Chamber; Partial Discharge; Pulse shape analysis; detector; instrumentation; nuclear instrumentation; fission chamber; neutrons; Neutron-gamma discrimination; signal processing; spectrum analysis

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Traitement du signal et de l'image [eess.SP]

Hassen Hamrita, C. Jammes, Giacomo Galli, Frédéric Lainé. Rejection of partial-discharge-induced pulses in fission chambers designed for sodium-cooled fast reactors. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2017, 848, pp.109 - 113. ⟨10.1016/j.nima.2016.11.055⟩. ⟨hal-01879004⟩