Speaker
Dr
Marcus Beck
(Helmholtz-Institut Mainz and Johannes Gutenberg Universität Mainz)
Description
The aSPECT experiment aims to determine the beta-neutrino angular correlation in the decay of the free neutron to determine the ratio of the weak coupling constants gA/gV. The past years have been used to optimize the set-up and to investigate and minimize systematic effects. A new beam-time to determine the beta-neutrino angular correlation with an uncertainty of ~1% has taken place with this improved set-up at the cold neutron beam of PF1b at the Institut Laue Langevin from May to August 2013.
The focus of this talk will be the major improvements and investigations leading to the beamtime in 2013. These include a modified detector electronics to avoid saturation effects and an improved electrode system to suppress field emission and optimized with respect to fluctuations of the work function.
Summary
The improvements of the aSPECT experiment with which a proton recoil measurement was performed at the ILL in 2013 will be presente.
Primary author
Dr
Marcus Beck
(Helmholtz-Institut Mainz and Johannes Gutenberg Universität Mainz)
Co-authors
Mr
Alexander Wunderle
(Institute of Physics, Uni Mainz)
Mr
Christian Schmidt
(Johannes Gutenberg-Universität Mainz)
Dr
Gertrud Konrad
(Atominstitut Wien)
Dr
Martin Simson
(Institut Laue-Langevin)
Michael Klopf
(Atominstitut Wien)
Prof.
Oliver Zimmer
(Institut Laue-Langevin)
Mr
Romain MAISONOBE
(Institut Laue-Langevin)
Mr
Romain Virot
(Institut Laue-Langevin)
Prof.
Stefan Baeßler
(University of Virginia)
Dr
Torsten Soldner
(Institut Laue-Langevin)
Prof.
Werner Heil
(Institute of Physics)
