Heidelberg 2015 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 33: Astroparticle Physics 1
HK 33.5: Talk
Tuesday, March 24, 2015, 18:30–18:45, P/H2
Commissioning and first measurements with the post regulation for the high voltage system of the KATRIN-experiment — •Oliver Wack for the KATRIN collaboration — IKP,KIT,Karlsruhe,Germany
The Karlsruhe Tritium Neutrino-Experiment KATRIN will measure the endpoint energy region of the tritium β -decay spectrum to determine the mass of the electron antineutrino with a sensitivity of about 200meV/c2. Therefore the principle of a MAC-E-filter spectrometer will be used. The retarding potential up to -35kV has to achieve a stability of at least 3ppm. For this two high precision voltage dividers in addition with high precision digital voltmeters will be monitoring the high voltage in parallel with another MAC-E-filter type spectrometer formerly used in the Mainz-Experiment.
This talk will give a brief introduction in the problem of electromagnetic disturbances coupling into the spectrometer resulting in AC noise in the retarding potential. It will also cover the hardware solution, the so called post regulation and the first measurements during the second main spectrometer commissioning phase.