A novel detector system for KATRIN to search for keV-scale sterile neutrinos

Susanne Mertens, Antonio Alborini, Konrad Altenmüller, Tobias Bode, Luca Bombelli, Tim Brunst, Marco Carminati, David Fink, Carlo Fiorini, Thibaut Houdy, Anton Huber, Marc Korzeczek, Thierry Lasserre, Peter Lechner, Michele Manotti, Ivan Peric, David C. Radford, Daniel Siegmann, Martin Slezák, Kathrin ValeriusJoachim Wolf, Sascha Wüstling

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53 Scopus citations


Sterile neutrinos appear in minimal extensions of the Standard Model of particle physics. If their mass is in the keV regime, they are viable dark matter candidates. One way to search for sterile neutrinos in a laboratory-based experiment is via the analysis of β-decay spectra, where the new neutrino mass eigenstate would manifest itself as a kink-like distortion of the β-decay spectrum. The objective of the TRISTAN project is to extend the KATRIN setup with a new multi-pixel silicon drift detector system to search for a keV-scale sterile neutrino signal. In this paper we describe the requirements of such a new detector, and present first characterization measurement results obtained with a 7 pixel prototype system.

Original languageEnglish
Article number065203
JournalJournal of Physics G: Nuclear and Particle Physics
Issue number6
StatePublished - 2019


  • neutrino mass
  • silicon drift detector
  • sterile neutrino
  • tritium beta decay


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