Mainz 2022 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 67: Instrumentation XVII

HK 67.1: Gruppenbericht

Donnerstag, 31. März 2022, 16:00–16:30, HK-H3

New detectors for high precision measurements of thermal neutrons — •Jochen Kaminski¹, Markus Gruber¹, Saime Gürbüz¹, Markus Köhli², Michael Lupberger¹, Divya Pal¹, Laura Rodríguez Gómez¹, and Klaus Desch¹ — ¹Physikalisches Institut, Universität Bonn, Bonn, Deutschland — ²Physikalisches Institut, Universität Heidelberg, Heidelberg, Deutschland

In the light of neutron sources in the construction or the commissioning phase, such as the ESS or the CSNS, the demand for neutron detectors is increasing. Because of the shortage and the subsequent rise in cost of helium-3 the availability of conventional neutron detectors is limited. Therefore, new types of detectors based on layers of solid state converters made of boron or gadolinium are being developed. Our group is developing three different types of detectors for high spatial and time resolution for which very different technologies are employed. One of them uses a boron and gadolinium loaded MCP as a converter and amplification stage with a readout by four Timepix3 ASICs, which is ideal for time resolved imaging applications. The two gaseous detectors are aimed for event-by-event high precision measurements of space and time of the conversion point. The detectors use boron-rich conversion layers and are based on the one hand on the TPC principle with a GridPix readout for high precision or on the other hand on a multi-layer GEM-based detector for high rates. In this presentation the principles and the current development statuses of the three detectors are discussed.