Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 45: Instrumentation IX
HK 45.4: Talk
Thursday, March 19, 2026, 17:00–17:15, PHIL B 302
Development of a BaF - Plastic Phoswich Detector for Particle Identification in Mixed Fields — •Lara Dippel1,2, Anna Becker2,3, Kilian Simon Baumann2,3, Kai-Thomas Brinkmann1,2, Kim Tabea Giebenhain1, Dzmitry Kazlou1, Markel Fix Martinez2,3, Uli Weber2,3, Hans-Georg Zaunick1,2, and Klemens Zink2,3 — 12nd Physics Institute, Justus Liebig University Giessen, Germany — 2LOEWE Research Cluster for Advanced Medical Physics in Imaging and Therapy (ADMIT) — 3TH Mittelhessen University of Applied Sciences, Giessen, Germany
This work presents the development of a Phoswich detector for fast neutron detection and particle discrimination in mixed radiation fields. The detector consists of a Barium Fluoride (BaF) crystal optically coupled to a thin plastic scintillator. Measurements were performed at the Marburg Ion Beam Therapy Center, where a water phantom was irradiated with 300 MeV/u carbon ions. Particle discrimination and identification were achieved using pulse shape discrimination (PSD) techniques, allowing the relative abundances of particles produced in the irradiation to be extracted. The measurement setup was replicated in a Geant4 simulation to validate the particle identification and to compare the relative particle yields. This work is part of the ADMIT consortium under Project Part A, which focuses on estimating spectral neutron fluxes for flash therapy in tumor treatment applications. This project is financed with funds of LOEWE - Landes-Offensive zur Entwicklung Wissenschaftlich-ökonomischer Exzellenz, Förderlinie 2: LOEWE-Schwerpunkte.
Keywords: Phoswich; Neutron Detection; Pulse Shape Discrimination; Particle Identification