Investigation of Electron Backscattering on Silicon Drift Detectors for the Sterile Neutrino Search with TRISTAN
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866929623358504960 |
|---|---|
| author | Spreng, Daniela Urban, Korbinian Carminati, Marco Edzards, Frank Fiorini, Carlo Lechner, Peter Nava, Andrea Siegmann, Daniel Wiesinger, Christoph Mertens, Susanne |
| author_facet | Spreng, Daniela Urban, Korbinian Carminati, Marco Edzards, Frank Fiorini, Carlo Lechner, Peter Nava, Andrea Siegmann, Daniel Wiesinger, Christoph Mertens, Susanne |
| contents | Sterile neutrinos are hypothetical particles in the minimal extension of the Standard Model of Particle Physics. They could be viable dark matter candidates if they have a mass in the keV range. The Karlsruhe tritium neutrino (KATRIN) experiment, extended with a silicon drift detector focal plane array (TRISTAN), has the potential to search for keV-scale sterile neutrinos by measuring the kinematics of the tritium $β$-decay. The collaboration targets a sensitivity of $10^{-6}$ on the mixing amplitude $\sin^2Θ$. For this challenging target, a precise understanding of the detector response is necessary. In this work, we report on the characterization of electron backscattering from the detector surface, which is one of the main effects that influence the shape of the observed energy spectrum. Measurements were performed with a tandem silicon drift detector system and a custom-designed electron source. The measured detector response and backscattering probability are in good agreement with dedicated backscattering simulations using the Geant4 simulation toolkit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_12776 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Investigation of Electron Backscattering on Silicon Drift Detectors for the Sterile Neutrino Search with TRISTAN Spreng, Daniela Urban, Korbinian Carminati, Marco Edzards, Frank Fiorini, Carlo Lechner, Peter Nava, Andrea Siegmann, Daniel Wiesinger, Christoph Mertens, Susanne Instrumentation and Detectors Sterile neutrinos are hypothetical particles in the minimal extension of the Standard Model of Particle Physics. They could be viable dark matter candidates if they have a mass in the keV range. The Karlsruhe tritium neutrino (KATRIN) experiment, extended with a silicon drift detector focal plane array (TRISTAN), has the potential to search for keV-scale sterile neutrinos by measuring the kinematics of the tritium $β$-decay. The collaboration targets a sensitivity of $10^{-6}$ on the mixing amplitude $\sin^2Θ$. For this challenging target, a precise understanding of the detector response is necessary. In this work, we report on the characterization of electron backscattering from the detector surface, which is one of the main effects that influence the shape of the observed energy spectrum. Measurements were performed with a tandem silicon drift detector system and a custom-designed electron source. The measured detector response and backscattering probability are in good agreement with dedicated backscattering simulations using the Geant4 simulation toolkit. |
| title | Investigation of Electron Backscattering on Silicon Drift Detectors for the Sterile Neutrino Search with TRISTAN |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2405.12776 |