20 research outputs found
Herstellung und Verwendung von hochkonzentriertem HD zur Validierung der Kalibrierung von Wasserstoffanalysesystemen am Tritiumlabor Karlsruhe
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Relative intensity correction of Raman systems with National Institute of Standards and Technology standard reference material 2242 in 90⁰-scattering geometry
No full textConcentrated Nonequilibrium HD for the Cross Calibration of Hydrogen Isotopologue Analytics
No full textOverview of recent and current spectroscopic investigations with hydrogen isotopologues for KATRIN
No full textDesign of a tritium compatible spectroscopy experiment for hydrogen istopologues for temperatures between 15-293 K
No full textDevelopment of a silicon drift detector system for the TRISTAN project
No full textSterile 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 spectrum. The objective of the TRISTAN project is to extend the KATRIN setup with a novel multi-pixel silicon drift detector system to search for a keV-scale sterile neutrino signal. First seven-pixel prototype detectors were produced and characterized with radioactive x-ray and electron sources. The next prototype generation with 166 pixels is currently in production and will be ready at the end of 2018. This poster describes the requirements of the novel TRISTAN detector system and presents the technical realization of the first prototypes
Detector Development for a Sterile Neutrino Search with the KATRIN Experiment
No full textInternational audienceThe KATRIN (Karlsruhe Tritium Neutrino) experiment investigates the energetic endpoint of the tritium -decay spectrum to determine the effective mass of the electron anti-neutrino with a precision of ( C.L.) after an effective data taking time of three years. The TRISTAN (tritium -decay to search for sterile neutrinos) group aims to detect a sterile neutrino signature by measuring the entire tritium -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 with an excellent energy resolution of (FWHM) at . This work gives an overview of the ongoing detector development and test results of the first seven pixel prototype detectors
Silicon drift detector prototypes for the keV-scale sterile neutrino search with TRISTAN
No full textInternational audienceThe TRISTAN project is an extension of the KATRIN experiment to search for the signature of keV-scale sterile neutrinos in the tritium beta decay spectrum. Sterile neutrinos are hypothetical particles that mix with the active neutrinos and thus affect the spectral shape of the beta decay. For the spectroscopy of electrons from the high-activity tritium source a novel pixelated silicon drift detector (SDD) is in development. In this work the characterization of 7-pixel SDD prototypes equipped with the IDeF-X BD ASIC is presented. The prototype detectors have pixel diameters between 0.5 and 2 mm with 2–12 drift rings. The ASIC noise floor was reached with all designs. A particular focus of the characterization measurements was the study of charge sharing. A very good general performance of the SDD prototypes was demonstrated. In order to reduce charge sharing the detector prototyping continues with SDDs with a pixel diameter of 3 mm. The next prototypes with 160 pixels are in production
