Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 116: Detectors 11 (gas detectors)
T 116.1: Talk
Friday, March 8, 2024, 09:00–09:15, Geb. 30.23: 2/17
BODELAIRE: A TPC for Neutron Science — Klaus Desch1, Jochen Kaminski1, •Thomas Block1, Michael Lupberger1,2, Markus Köhli3, Saime Gürbuz1, Markus Gruber1, and Laura Rodriguez Gómez1 — 1Physikalisches Institut, Univeristät Bonn — 2HISKP, Universität Bonn — 3Physikalisches Institut, Univeristät Heidelberg
An increase in demand and the resulting price increase of Helium-3 has sparked the development of alternative kinds of neutron detectors for various applications in neutron science.
The Boron Detector with Light and Ionisation Reconstruction (BODELAIRE) is a detector, which combines the concept of a time projection chamber (TPC) with a highly granular readout with high time resolution and a boronated glass window for neutron conversion. Boron absorbs incoming neutrons and decays into an alpha particle and a Lithium ion. One of the ions enters the drift volume of the TPC and creates a trace of electron-ion pairs, which the readout detects. The other ion emitted in opposite direction is used to start the readout with the help of a scintillator inside the glass vessel. The light created in the scintillator is coupled to a trigger board via wavelength shifting fibers to generate a start signal in silicon photomultiplier-based electronics. The trigger system is FPGA-controlled, which the user can interface with to set signal thresholds.
In this talk I will present the detector concept and its current status of development.
Keywords: TPC; Neutrons; FPGA; Trigger