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Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Poster

HK 46.80: Poster

Donnerstag, 20. März 2014, 16:00–18:00, HZ Poster

Commissioning of a pulsed UV photoelectron source at the KATRIN main spectrometerJan Behrens1, Stefan Groh2, •Volker Hannen1, Raphael Jöhren1, Lorenz Josten1, Nicholas Steinbrink1, Christian Weinheimer1, Daniel Winzen1, Michael Zacher1, and Miroslav Zbořil1 for the KATRIN collaboration — 1Westfälische Wilhelms-Universität, Institut für Kernphysik, Münster, Germany — 2Karlsruher Institut für Technologie, KIT Zentrum für Elementarteilchen- und Astrophysik, Karlsruhe, Germany

The KATRIN experiment aims to measure the electron neutrino mass with a sensitivity of < 0.2 eV at 90% confidence level. The measurement is accomplished by scanning the endpoint of the tritium β-spectrum with an electrostatic spectrometer, based on the MAC-E-Filter (magnetic adiabatic collimation with an electrostatic filter). For the calibration of the spectrometer a mono-energetic, angular selective UV photoelectron source had been developed and constructed in Münster (see K. Hugenberg, Prog. Part. Nucl. Phys. 64 (2010) 288). This electron source has been used in the successful commissioning of the main spectrometer and detector system in summer 2013. The poster will present the characteristics of the electron source determined during the spectrometer measurements.
This work is supported by BMBF under 05A11PM2.

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