https://doi.org/10.1051/epjconf/201921910003
ANNI – A pulsed cold neutron beam facility for particle physics at the ESS
1 Institut Laue-Langevin, CS 20156, 38042 Grenoble Cedex 9, France
2 Atominstitut, TU Wien, Stadionallee 2, 1020 Wien, Austria
3 Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Wien, Austria
4 Physik-Department ENE, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
5 Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
6 Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
7 European Spallation Source, Box 176, 22100 Lund, Sweden
8 Fac Ciencias, Universidad de Granada, Av. Fuente Nueva S/N, 18071 Granada, Spain
a e-mail: soldner@ill.fr
Published online: 12 December 2019
Pulsed beams have tremendous advantages for precision experiments with cold neutrons. In order to minimise and measure systematic effects, they are used at continuous sources in spite of the related substantial decrease in intensity. At the European Spallation Source ESS these experiments will profit from the pulse structure of the source and its 50 times higher peak brightness compared to the most intense reactor facilities, making novel concepts feasible. Therefore, the cold neutron beam facility for particle physics ANNI was proposed as part of the ESS instrument suite. The proposed design has been re-optimised to take into account the present ESS cold moderator layout. We present design considerations, the optimised instrument parameters and performance, and expected gain factors for several reference experiments.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
