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HK: Fachverband Physik der Hadronen und Kerne
HK 49: Poster
HK 49.22: Poster
Thursday, March 15, 2007, 16:00–17:00, P
Development of a QA system for the wire electrode of the KATRIN main spectrometer — •Martina Reinhardt, Helmut Baumeister, Alexander Gebel, Volker Hannen, Raphael Jöhren, Hans-Werner Ortjohann, Matthias Prall, Kim Temming, and Christian Weinheimer for the KATRIN collaboration — Institut für Kernphysik, Westfälische Wilhelms-Universität Münster
The KArlsruhe TRItium Neutrino experiment will measure the mass of the νe
with a sensitivity of 0.2 eV/c2 at 90% C.L. The main spectrometer of the experiment has to be equipped with
a wire electrode to reduce background from electrons produced in the vessel material either by cosmic muons
or by radioactive isotopes. It is also used to shape the electric potential. Computer simulations have shown that the modules of the wire electrode,
that covers a surface area of ca. 650 m2, have to be manufactured with a
precision of the order of 0.1 mm. For the quality assessment of the produced wire modules we have automated a 3D measurement table and equipped it with
a machine vision system and a dedicated laser sensor system.
The emphasis of the poster lies on the setup and the principle of these QA components.
Supported by BMBF under contract number 05CK5MA/0 and
the virtual institut VIDMAN of the HGF.