The n2EDM experiment at the Paul Scherrer Institute

C. Abel; N. J. Ayres; G. Ban; G. Bison; K. Bodek; V. Bondar; E. Chanel; P.-J. Chiu; B. Clement; C. Crawford; M. Daum; S. Emmenegger; P. Flaux; L. Ferraris-Bouchez; W.C. Griffith; Z.D. Grujić; P.G. Harris; W. Heil; N. Hild; K. Kirch; P.A. Koss; A. Kozela; J. Krempel; B. Lauss; T. Lefort; Y. Lemière; A. Leredde; P. Mohanmurthy; O. Naviliat-Cuncic; D. Pais; F.M. Piegsa; G. Pignol; M. Rawlik; D. Rebreyend; D. Ries; S. Roccia; K. Ross; D. Rozpedzik; P. Schmidt-Wellenburg; A. Schnabel; N. Severijns; J. Thorne; R. Virot; J. Voigt; A. Weis; E. Wursten; J. Zejma; G. Zsigmond

doi:10.1051/epjconf/201921902002

Proceedings

Open Access

EPJ Web of Conferences 219, 02002 (2019)
https://doi.org/10.1051/epjconf/201921902002

The n2EDM experiment at the Paul Scherrer Institute

C. Abel¹, N. J. Ayres¹, G. Ban², G. Bison³, K. Bodek⁴, V. Bondar⁵, E. Chanel⁶, P.-J. Chiu³, B. Clement⁷, C. Crawford⁸, M. Daum³, S. Emmenegger⁹, P. Flaux², L. Ferraris-Bouchez⁷, W.C. Griffith¹, Z.D. Grujić¹⁰, P.G. Harris¹, W. Heil¹¹, N. Hild³, K. Kirch³^,9, P.A. Koss⁵^a, A. Kozela¹², J. Krempel⁹, B. Lauss³^b, T. Lefort², Y. Lemière², A. Leredde⁷, P. Mohanmurthy³^,9, O. Naviliat-Cuncic²^c, D. Pais³, F.M. Piegsa⁶, G. Pignol⁷, M. Rawlik⁹, D. Rebreyend⁷, D. Ries¹³, S. Roccia¹⁴, K. Ross¹³, D. Rozpedzik⁴, P. Schmidt-Wellenburg³, A. Schnabel¹⁵, N. Severijns⁵, J. Thorne¹^,6, R. Virot⁷, J. Voigt¹⁵, A. Weis¹⁰, E. Wursten⁵, J. Zejma⁴ and G. Zsigmond³

¹ University of Sussex, Brighton, UK
² Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, Caen, France
³ Paul Scherrer Institute, 5232 Villigen, Switzerland
⁴ Jagiellonian University, Cracow, Poland
⁵ Instituut voor Kern- en Stralingsfysica, KU Leuven, 3001 Heverlee, Belgium
⁶ Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, Bern, Switzerland
⁷ Laboratoire de Physique Subatomique et de Cosmologie, Grenoble, France
⁸ University of Kentucky, Lexington, USA
⁹ Institute for Particle Physics and Astrophysics, ETH Zürich, 8093 Zürich, Switzerland
¹⁰ Physics Department, University of Fribourg, 1700 Fribourg, Switzerland
¹¹ Institut für Physik, Johannes-Gutenberg-Universität, Mainz, Germany
¹² Henryk Niedwodniczański Institute for Nuclear Physics, Cracow, Poland
¹³ Institut für Kernchemie, Johannes-Gutenberg-Universität, Mainz, Germany
¹⁴ CSNSM, Université Paris Sud, CNRS/IN2P3, Université Paris Saclay, Orsay-Campus, France
¹⁵ Physikalisch Technische Bundesanstalt, Berlin, Germany

^a e-mail: peter.koss@kuleuven.be/ ORCiD: 0000-0001-5094-3056
^b e-mail: bernhard.lauss@psi.ch / ORCiD: 0000-0002-1986-391X
^c e-mail: Present address: Michigan State University, East-Lansing, MI, USA

Published online: 12 December 2019

Abstract

We present the new spectrometer for the neutron electric dipole moment (nEDM) search at the Paul Scherrer Institute (PSI), called n2EDM. The setup is at room temperature in vacuum using ultracold neutrons. n2EDM features a large UCN double storage chamber design with neutron transport adapted to the PSI UCN source. The design builds on experience gained from the previous apparatus operated at PSI until 2017. An order of magnitude increase in sensitivity is calculated for the new baseline setup based on scalable results from the previous apparatus, and the UCN source performance achieved in 2016.

© The Authors, published by EDP Sciences, 2019

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