Measurement of the ionization yield of neutron-induced proton recoils in Tetramethylsilane. (28th July 2021)

• Record Type: Journal Article
• Authors: Wu, S.X.; Lenardo, B.G.; Gratta, G.
• Is Part Of: Journal of instrumentation. Volume 16:Number 7(2021)
• Publication Date: 2021-07-28
• Subjects: Calorimeters -- Neutron detectors (cold, thermal, fast neutrons) -- Time projection chambers; Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/16/07/P07053
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: We report on a low energy measurement of the ionization yield in a Tetramethylsilane Time Projection Chamber (TPC) using 2.8 MeV neutrons from a deuterium-deuterium neutron generator. The proton recoil charge yield is measured at four different electric fields, finding a dependence that can be described by the Thomas-Imel model. By comparing the proton recoil yield to that obtained from γ-ray calibrations, a quenching factor is obtained for each electric field. These results demonstrate the feasibility of using room temperature organic ionisation detectors to detect MeV-scale neutrons in the proton-recoil channel.