Göttingen 2025 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 7: Poster Session
ST 7.3: Poster
Donnerstag, 3. April 2025, 13:45–15:45, ZHG Foyer 1. OG
Development of a BaF-Plastic Phoswich Detector for Fast Neutron Detection — •Lara Dippel1,2, Kai-Thomas Brinkmann1,2, Hans-Georg Zaunick1,2, and Dzmitry Kazlou1 — 1II. Physikalisches Institut, JLU Gießen — 2LOEWE Research Cluster for Advanced Medical Physics in Imaging and Therapy (ADMIT), TH Mittelhessen University of Applied Sciences, Giessen, Germany.
This poster presents the initial development steps of a Phoswich detector designed for fast neutron detection. The detector comprises a Barium Fluoride (BaF) crystal optically coupled to a thin plastic scintillator, with the system read out via a photomultiplier tube (PMT) on the BaF side. Particle discrimination is evaluated using pulse shape discrimination (PSD) techniques and integral versus amplitude histograms, enabling the identification of different particle types. The system was tested using Na-22, Sr-90, and an AmBe neutron source, as well as cosmic particles. For comparison, reference measurements were conducted with a standalone BaF detector to assess the particle identification capabilities and potential advantages of the Phoswich configuration. This work is part of the ADMIT consortium under Project Part A, which focuses on estimating spectral neutron fluxes for 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; Neutrons