Mainz 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 56: Astroteilchenphysik
HK 56.1: Gruppenbericht
Freitag, 23. März 2012, 11:00–11:30, RW 3
Status of the KATRIN Experiment — •Miroslav Zbořil — Institut für Kernphysik, Westfälische Wilhelms-Universität Münster
The KArlsruhe TRItium Neutrino experiment (KATRIN) aims at a direct and model independent determination of the electron antineutrino mass with a sensitivity of 0.2 eV/c2 (90 % C.L.) via a measurement of the endpoint region of the tritium β-decay spectrum. The experiment consists of a windowless gaseous tritium source, differential and cryogenic pumping sections and a tandem of a pre- and a main spectrometer, applying magnetic adiabatic collimation (MAC-E filter concept) to guide the β-electrons with sufficient energy onto a segmented silicon PIN detector.
At present the experiment is being set up at the Karlsruhe Institute of Technology. Several major components have been installed and tested. A large range of test experiments and background studies have been performed at the pre-spectrometer. The installation of the inner wire electrode is being completed, such that the commissioning of the main spectrometer can take place in 2012. The commissioning of the 148 pixel silicon detector is currently in progress. The same holds for an additional MAC-E filter spectrometer, the monitor spectrometer, which will be utilized for continuous monitoring of the energy scale stability with the help of mono-energetic conversion electrons from a 83mKr source. The talk will present results of recent test experiments and provide an outlook on the commissioning activities.
The project is supported by BMBF under contract number 05A11PM2.