The n2EDM experiment at the Paul Scherrer Institute

C. Abel , N.J. Ayres , G. Ban (1) , G. Bison , K. Bodek , V. Bondar , E. Chanel , P.-J. Chiu , B. Clement (2) , C. Crawford , M. Daum , S. Emmenegger , P. Flaux (1) , L. Ferraris-Bouchez (2) , 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 (1) , Y. Lemière (1) , A. Leredde (2) , P. Mohanmurthy , O. Naviliat-Cuncic (1) , D. Pais , F.M. Piegsa , G. Pignol (2) , M. Rawlik , D. Rebreyend (2) , D. Ries , S. Roccia (3) , K. Ross , D. Rozpedzik , P. Schmidt-Wellenburg , A. Schnabel , N. Severijns , J. Thorne , R. Virot (2) , J. Voigt , A. Weis , E. Wursten , J. Zejma , G. Zsigmond

1 LPCC - Laboratoire de physique corpusculaire de Caen
2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
3 CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière

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.

Mots clés: n: electric moment; spectrometer: design; sensitivity; performance

Domaines: Instrumentations et Détecteurs [physics.ins-det]

C. Abel, N.J. Ayres, G. Ban, G. Bison, K. Bodek, et al.. The n2EDM experiment at the Paul Scherrer Institute. International Workshop on Particle Physics at Neutron Sources 2018, May 2018, Grenoble, France. pp.02002, ⟨10.1051/epjconf/201921902002⟩. ⟨hal-01937665⟩