Hamburg 2009 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 2: Präzisionsmassenspektrometrie, Ionenfallen, FT-IZR-MS, Moleküle, Cluster II

MS 2.3: Vortrag

Montag, 2. März 2009, 14:45–15:00, VMP 8 R05

Preparation of a tritium Q-value measurement in a double Penning trap — •Christoph Diehl^1,2, David Pinegar¹, Robert Van Dyck Jr.³, Christoph Orth^1,2, and Klaus Blaum^1,2 — ¹Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — ²Physikalisches Institut, Ruprecht-Karls-Universität, 69120 Heidelberg, Germany — ³Department of Physics, University of Washington, Seattle, WA 98195-1560, USA

A precise determination of the Q-value of tritium (³H) is of relevance for the determination of the electron anti-neutrino mass as aspired by the Karlsruhe Tritium Neutrino Experiment (KATRIN). In our double Penning trap mass spectrometer we aim to measure the mass ratio of ³H and its β-decay product ³He to an accuracy of 10⁻¹¹, which would determine the Q-value to an accuracy of 30 meV. The spectrometer we utilize is an enhanced version of the University of Washington Penning trap mass spectrometer (UW-PTMS)[1] and was recently transfered from Seattle to Heidelberg, where it is set up at the moment as the MPIK/UW-PTMS. We will present the necessary preparation work at the Max-Planck-Institut für Kernphysik. This includes major reconstructions of the building as well as studies and control of environmental parameters in the laboratory, like temperature and magnetic field.

[1] D. B. Pinegar, S. L. Zafonte, R. S. Van Dyck Jr., Hyperf. Int. 174, 47 (2007)