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arXiv · 1801.08182

Detector Development for a Sterile Neutrino Search with the KATRIN Experiment

Tim Brunst·Konrad Altenmüller·Tobias Bode·Luca Bombelli·Vasiliy Chernov·Anton Huber·Marc Korzeczek·Thierry Lasserre·Peter Lechner·Susanne Mertens·Aleksander Nozik·Vladislav Pantuev·Daniel Siegmann·Aino Skasyrskaya
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Abstract

The KATRIN (Karlsruhe Tritium Neutrino) experiment investigates the energetic endpoint of the tritium $\beta$-decay spectrum to determine the effective mass of the electron anti-neutrino with a precision of $200\,\mathrm{meV}$ ($90\,\%$ C.L.) after an effective data taking time of three years. The TRISTAN (tritium $\beta$-decay to search for sterile neutrinos) group aims to detect a sterile neutrino signature by measuring the entire tritium $\beta$-decay spectrum with an upgraded KATRIN system. One of the greatest challenges is to handle the high signal rates generated by the strong activity of the KATRIN tritium source. Therefore, a novel multi-pixel silicon drift detector is being designed, which is able to handle rates up to $10^{8}\,\mathrm{cps}$ with an excellent energy resolution of $<200\,\mathrm{eV}$ (FWHM) at $10\,\mathrm{keV}$. This work gives an overview of the ongoing detector development and test results of the first seven pixel prototype detectors.

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Tim Brunst, Konrad Altenmüller, Tobias Bode, Luca Bombelli, Vasiliy Chernov, Anton Huber, Marc Korzeczek, Thierry Lasserre, Peter Lechner, Susanne Mertens, Aleksander Nozik, Vladislav Pantuev, Daniel Siegmann, Aino Skasyrskaya. 2018-01-24. Detector Development for a Sterile Neutrino Search with the KATRIN Experiment. https://arxiv.org/abs/1801.08182

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