MicroMegas-based detectors for time-of-flight measurements of neutron-induced reactions

F. Gunsing (1) , F. Belloni (1) , E. Berthoumieux (1) , M. Diakaki (2) , E. Dupont (1) , E. Ferrer-Ribas (1) , Th. Papaevangelou (1)

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)

MicroMegas detectors are versatile gaseous detectors which are used for ionizing paricle detection. A MicroMegas detector consists of two adjacent gas-filled volumes. One volume acts as a drift region with an electric field operating in the ionization chamber regime, the second volume is the amplification region acting as a parallel-plate avalanche counter. The use of the microbulk technique allows the production of thin, radiation resistant, and low-mass detector with a highly variable gain. Such MicroMegas detectors have been developed and used in combination with neutron time-of-flight measurements for in-beam neutron-flux monitoring, fission and light-charged particle reaction cross section measurements, and for neutron-beam imaging. An overview of MicroMegas detectors for neutron detection and neutron reaction cross section measurements and related results and developments will be presented.

Keywords: experimental facilities; equipment

Domains: Nuclear Theory [nucl-th]; Nuclear Experiment [nucl-ex]

F. Gunsing, F. Belloni, E. Berthoumieux, M. Diakaki, E. Dupont, et al.. MicroMegas-based detectors for time-of-flight measurements of neutron-induced reactions. EPJ Web of Conferences, 2020, 239, pp.17007. ⟨10.1051/epjconf/202023917007⟩. ⟨cea-02976817⟩