Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 45: Instrumentation IX
HK 45.2: Talk
Thursday, March 19, 2026, 16:30–16:45, PHIL B 302
Thermal Neutron Detection with Lithium-Silica Glass in Proton Therapy — •Kim Tabea Giebenhain1, Anna Becker2,3, Lara Dippel1,3, Markel Fix-Martinez2,3, Hans-Georg Zaunick1,3, Dzmitry Kazlou1, Kilian-Simon Baumann2,3, Ulrich Weber2,3, Klemens Zink2,3, and Kai-Thomas Brinkmann1,3 — 12nd Physics Institute, Justus Liebig University, Giessen, Germany — 2TH Mittelhessen University of Applied Sciences, Giessen, Germany — 3LOEWE Research Cluster for Advanced Medical Physics in Imaging an Therapy (ADMIT)
Neutron detection is an important topic in IonBeam Therapy, specifically when irradiating patients with ultra high dose rates (also knownas FLASH). At cyclotron-based facilities, these dose rates can only be reached at the highest energies without a degrader. which necessitates range modulators and thick absorbers to ensure conformal tumor coverage in clinical ranges.
These absorbers can increase the amount of produced neutrons
significantly. To reliably assess the neutron amount, efficient neutron detectors are needed to benchmark Monte-Carlo simulations which are used for dosimetric assessment.
This work presents the findings of a scintillation-based thermal neutron detector, consisting of Lithium-silica glass and a photomultiplier tube.
The detector has been tested at an Americium-Beryllium neutron source and for different absorbers at the Marburg IonBeam Therapy center.
This project is financed with funds of LOEWE-Landes-Offensive zur Entwicklung Wissenschaftlich-ökonomischer Exzellenz, Förderlinie 2: LOEWE-Schwerpunkte
Keywords: Neutron Detection; Thermal Neutrons; Proton Therapy; Detector Development