Hannover 2010 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 8: Poster

MS 8.3: Poster

Donnerstag, 11. März 2010, 16:00–18:00, Lichthof

Minimization of environmental influences for precision mass measurements — •Sebastian Streubel1, Christoph Diehl1, Jochen Ketter1, Martin Höcker1, David B. Pinegar1, Robert S. Van Dyck Jr.2, and Klaus Blaum11Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — 2Department of Physics, University of Washington, Seattle, WA 98195-1560, USA

In an experiment with a double-Penning trap mass spectrometer, we aim to measure the mass ratio of 3H to 3He with a precision of 10−11 and below. This mass ratio gives an independent measurement of the tritium Q-value and is thus of relevance for the determination of the electron antineutrino mass by the Karlsruhe Tritium Neutrino Experiment (KATRIN). To obtain the desired precision, it is important to control the environmental influences. For the best B-field control possible, we stabilize the pressure and the height of the liquid He surrounding the traps and the temperature of the room in which the magnet stands. We actively compensate the drift of the geomagnetic field, and reduce the coupling of vibrations to the magnet from the movement of the building.

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DPG-Physik > DPG-Verhandlungen > 2010 > Hannover