Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 43: Astroparticle Physics 2
HK 43.1: Gruppenbericht
Mittwoch, 25. März 2015, 14:30–15:00, M/HS4
Status and commissioning of the KATRIN spectrometer and detector section — •Philipp C.-O. Ranitzsch for the KATRIN collaboration — Institut für Kernphysik, Universität Münster
The goal of the KArlsruhe TRItium Neutrino experiment (KATRIN) is to investigate the neutrino mass with a sensitivity of 0.2 eV/c2 by a high-resolution and high-statistics measurement of the end-point region of the 3H β-spectrum. For this task it uses an experimental setup made of two main parts, firstly a source and transport section (STS) including a windowless gaseous tritium source (WGTS), a differential and a cryogenic pumping section (DPS and CPS). The STS provides a clean current of 3H β-electrons that are analyzed and detected in the second part, namely the spectrometer and detector section (SDS). The SDS consists of two electrostatic spectrometers based on the MAC-E filter technique and a multi-pixel silicon semiconductor detector.
At the experimental site at the Karlsruhe Institute of Technology (KIT), the STS is currently under construction, while the SDS has recently undergone its second commissioning measurement phase. The main spectrometer together with the detector has been investigated regarding its transmission properties and the various sources of background. Improvements suggested from the first commissioning phase have been employed and tested.
This talk gives an overview of the current status of the KATRIN experiment, focussing on the recent second commissioning phase.
The work of the author is supported by BMBF Verbundforschung under contract 05A14PMA.