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Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.73: Poster

Thursday, March 19, 2009, 14:00–16:00, Audi-Max

Tracking Simulations for the WITCH Experiment — •Jonas Mader1, Marcus Beck1, Peter Friedag1, Christian Weinheimer1, Nausikaa Geeraert2, Nathal Severijns2, Michael Tandecki2, Emil Traykov2, Simon van Gorp2, Frederik Wauters2, Alexander Herlert3, and ISOLDE Collaboration31Institut für Kernphysik, WWU Münster, Wilhelm-Klemm Str. 9, 48149 Münster, Germany — 2Instituut voor Kern- en Stralingsfysica, K.U.Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium — 3CERN, CH-1211 Geneve 23, Switzerland

The WTICH experiment will measure the energy spectrum of recoil ions after a beta decay. From such a recoil energy spectrum the beta-neutrino angular correlation, which is sensitive to exotic interactions, will be extracted. For a precise determination of the beta-neutrino angular correlation coefficient a with Δ a < 0.5% the systematic uncertainties have to be understood in detail. To this end we perform particle tracking simulations from the source to the detector. The simulation package was originally developed for electrons and used in the KATRIN experiment. We adapted it for ions and use it to understand the transmission and reponse of the WITCH set-up, to investigate the effect of modifications of the set-up, to determine suitable configurations of the electrode potentials at WITCH and to analyse the data.

We will present the simulation package, show its functions using some select examples and give an outlook on the planned simulations.

This project is supported by BMBF under contract number 06MS270.

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