Development of a low-pressure Multi-Mesh THGEM detector for fission experiments at FRIB

Journal Article · 30 April 2024 · Journal of Instrumentation

DOI: https://doi.org/10.1088/1748-0221/19/05/p05023 · OSTI ID:2578839

Harca, I. ; Cortesi, M. ; Chyzh, R.; Brown, K.; McCormick, C.; Basson, M.

Abstract A small-area imaging detector prototype for position measurement of fission fragments produced in low energy heavy-ion reactions is presented in this study. The detector readout is equipped with a 2-dimensional, position-sensitive gaseous avalanche readout based on the novel Multi-Mesh Thick-GEM (MM-THGEM), and is coupled to a delay-line board for particle localization. The prototype has an effective area of 10 × 10 cm²and is operated in isobutane at low pressure (7–10 Torr). We present and discuss a series of systematic evaluation tests performed by irradiating the detector with α-particles and fission fragments emitted by small-rate sources (²⁴¹Am,²⁴⁹Cf and²⁵²Cf). Position and time resolutions of about 0.42 mm and 1 ns were achieved, respectively. This work serves as a benchmark for the development of a large-scale array of detectors for experiments with fission and fission-like reaction products at the Facility for Rare Isotope Beams (FRIB).

• Research Organization: Michigan State Univ., East Lansing, MI (United States); Michigan State University
• Sponsoring Organization: USDOE Office of Science (SC); USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: SC0023633
• OSTI ID: 2578839
• Journal Information: Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 05 Vol. 19; ISSN 1748-0221
• Publisher: Institute of Physics (IOP)Copyright Statement
• Country of Publication: United States
• Language: English