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A novel detector system for KATRIN to search for keV-scale sterile neutrinos
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abstract
Sterile neutrinos are a minimal extension of the Standard Model of Particle Physics. If their mass is in the kilo-electron-volt regime, they are viable dark matter candidates. One way to search for sterile neutrinos in a laboratory-based experiment is via tritium-beta decay, where the new neutrino mass eigenstate would manifest itself as a kink-like distortion of the $\beta$-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.
Forward citations
Cited by 3 Pith papers
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Opening up New Parameter Space for Sterile Neutrino Dark Matter
A new production channel, nu_a + nu_a -> nu_s + nu_s, mediated by a heavy scalar, can generate the observed sterile neutrino dark matter abundance independently of active-sterile mixing.
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The Remote Analog to Digital Conversion DAQ System for the TRISTAN Detector Upgrade
A remote-ADC data acquisition system — 168-channel digitizer boards at 62.5 MS/s streaming 192 Gb/s over optical links into FPGA pulse-processing and histogramming — is designed and built for the TRISTAN upgrade of KATRIN.
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Characterization of Low-energy Ionization Signals in Silicon Detectors for the Nab Experiment
Proton energy response of Nab's silicon detectors was stable over a year, with a dead layer of about 55 nm, and the timing model predicts proton time-of-flight bias uncertainty below 0.3 ns.
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