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Using GPU parallelization to perform realistic simulations of the LPCTrap experiments

Abstract : The LPCTrap setup is a sensitive tool to measure the β − ν angular correlation coefficient, a β ν , which can yield the mixing ratio ρ of a β decay transition. The latter enables the extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element V u d . In such a measurement, the most relevant observable is the energy distribution of the recoiling daughter nuclei following the nuclear β decay, which is obtained using a time-of-flight technique. In order to maximize the precision, one can reduce the systematic errors through a thorough simulation of the whole set-up, especially with a correct model of the trapped ion cloud. This paper presents such a simulation package and focuses on the ion cloud features; particular attention is therefore paid to realistic descriptions of trapping field dynamics, buffer gas cooling and the N-body space charge effects.
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Submitted on : Friday, January 16, 2015 - 2:35:56 PM
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X. Fabian, F. Mauger, G. Quéméner, Ph. Velten, G. Ban, et al.. Using GPU parallelization to perform realistic simulations of the LPCTrap experiments. 6th international conference on Trapped Charged Particles and Fundamental Physics (TCP2014), Nov 2014, Takamatsu, Japan. pp.87-95, ⟨10.1007/s10751-015-1192-2⟩. ⟨in2p3-01104281⟩



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