Abstract
We present the design of a next-generation experiment, n2EDM, currently under construction at the ultracold neutron source at the Paul Scherrer Institute (PSI) with the aim of carrying out a high-precision search for an electric dipole moment of the neutron. The project builds on experience gained with the previous apparatus operated at PSI until 2017, and is expected to deliver an order of magnitude better sensitivity with provision for further substantial improvements. An overview is of the experimental method and setup is given, the sensitivity requirements for the apparatus are derived, and its technical design is described.
| Original language | English |
|---|---|
| Article number | 512 |
| Journal | European Physical Journal C |
| Volume | 81 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2021 |
Bibliographical note
Publisher Copyright:© 2021, The Author(s).
Funding
We gratefully acknowledge the outstanding support from technicians, engineers and other professional services throughout the collaboration: B. Blau, K. Boutellier, B. Bougard, J. F. Cam, B. Carniol, M. Chala, A. Chatzimichailidis, M. Dill, P. Desrues, P. Erisman, A. Ersin, D. Etasse, R. Faure, C. Fourel, J. Fulachier, C. Fontbonne, C. Geraci, A. Gn\u00E4dinger, U. Greuter, J. Hadobas, L. Holitzner, J. Hommet, M. Horisberger, S. Hauri, B. Jehle, R. K\u00E4ch, G. K\u00E4slin, C. Kramer, K. Lojek, S. Major, M. M\u00E4hr, J. Marpaud, C. Martin, M. Marton, Y. Merrer, O. Morath, R. Nicolini, L. Noorda, F. Nourry, J. Odier, J. Oertli, C. Pain, J. Perronnel, M. Philippin, W. Pfister, S. Roni, S. Roudier, D. Reggiani, R. Schwarz, J.P. Scordilis, M. St\u00F6ckli, C. Str\u00E4ssle, V. Talanov, V. Teufel, C. Thomass\u00E9, C. VanDamme, C. Vescovi, A. Van Loon, R. Wagner, X. Wang, J. Welte. We are grateful for financial support from the the Swiss National Science Foundation through projects 200020-188700 (PSI), 200020-137664 (PSI), 200021-117696 (PSI), 200020-144473 (PSI), 200021-126562 (PSI), 200021-181996 (Bern), 200020-172639 (ETH), R\u2019EQUIP under numbers 139140 and 177008 and FLARE 20FL21-186179. The support by Emil-Berthele-Fonds is acknowledged. The LPC Caen and the LPSC Grenoble acknowledge the support of the French Agence Nationale de la Recherche (ANR) under reference ANR-14-CE33-0007 and the ERC project 716651-NEDM. The Polish collaborators acknowledge support from the National Science Center, Poland, Grants no. 2015/18/M/ST2/00056, no. 2018/30/M/ST2/00319, no. 2016/23/D/ST2/00715 and no. 2020/37/B/ST2/02349. Support by the Cluster of Excellence \u201CPrecision Physics, Fundamental Interactions, and Structure of Matter\u201D (PRISMA & EXC 2118/1) funded by the German Research Foundation (DFG) within the German Excellence Strategy (Project ID 39083149) is acknowledged. This work was partly supported by the Fund for Scientific Research Flanders (FWO) and Project GOA/2010/10 of the KU Leuven. The Core Facility \u201DMetrology of Ultra-Low Magnetic Fields\u201D at PTB was funded by Deutsche Forschungsgemeinschaft (DFG) through funding codes: DFG KO 5321/3-1 and TR408/11-1. We gratefully acknowledge the outstanding support from technicians, engineers and other professional services throughout the collaboration: B.?Blau, K.?Boutellier, B.?Bougard, J.?F.?Cam, B.?Carniol, M.?Chala, A.?Chatzimichailidis, M.?Dill, P.?Desrues, P.?Erisman, A.?Ersin, D.?Etasse, R.?Faure, C.?Fourel, J.?Fulachier, C. Fontbonne, C. Geraci, A. Gn?dinger, U. Greuter, J. Hadobas, L.?Holitzner, J.?Hommet, M.?Horisberger, S.?Hauri, B.?Jehle, R.?K?ch, G.?K?slin, C.?Kramer, K.?Lojek, S.?Major, M.?M?hr, J.?Marpaud, C.?Martin, M.?Marton, Y.?Merrer, O.?Morath, R.?Nicolini, L.?Noorda, F.?Nourry, J.?Odier, J.?Oertli, C.?Pain, J.?Perronnel, M.?Philippin, W.?Pfister, S.?Roni, S.?Roudier, D.?Reggiani, R. Schwarz, J.P. Scordilis, M.?St?ckli, C.?Str?ssle, V.?Talanov, V.?Teufel, C.?Thomass?, C.?VanDamme, C.?Vescovi, A.?Van Loon, R.?Wagner, X.?Wang, J.?Welte. We are grateful for financial support from the the Swiss National Science Foundation through projects 200020-188700 (PSI), 200020-137664 (PSI), 200021-117696 (PSI), 200020-144473 (PSI), 200021-126562 (PSI), 200021-181996 (Bern), 200020-172639 (ETH), R?EQUIP under numbers 139140 and 177008 and FLARE 20FL21-186179. The support by Emil-Berthele-Fonds is acknowledged. The LPC Caen and the LPSC Grenoble acknowledge the support of the French Agence Nationale de la Recherche (ANR) under reference ANR-14-CE33-0007 and the ERC project 716651-NEDM. The Polish collaborators acknowledge support from the National Science Center, Poland, Grants no.?2015/18/M/ST2/00056, no.?2018/30/M/ST2/00319, no.?2016/23/D/ST2/00715 and no.?2020/37/B/ST2/02349. Support by the Cluster of Excellence ?Precision Physics, Fundamental Interactions, and Structure of Matter? (PRISMA & EXC 2118/1) funded by the German Research Foundation (DFG) within the German Excellence Strategy (Project ID 39083149) is acknowledged. This work was partly supported by the Fund for Scientific Research Flanders (FWO) and Project GOA/2010/10 of the KU Leuven. The Core Facility ?Metrology of Ultra-Low Magnetic Fields? at PTB was funded by Deutsche Forschungsgemeinschaft (DFG) through funding codes: DFG KO 5321/3-1 and TR408/11-1.
| Funders | Funder number |
|---|---|
| KU Leuven | |
| ANR-14-CE33-0007 | |
| Fonds National de la Recherche Scientifique (FNRS) | |
| H2020 European Research Council | |
| Deutsche Forschungsgemeinschaft | 39083149, TR408/11-1, DFG KO 5321/3-1 |
| Deutsche Forschungsgemeinschaft | |
| Narodowe Centrum Nauki | 2018/30/M/ST2/00319, EXC 2118/1, 2020/37/B/ST2/02349, 2016/23/D/ST2/00715, 2015/18/M/ST2/00056 |
| Narodowe Centrum Nauki | |
| Paul Scherrer Institut | 139140, 200020-137664, 200020-172639, 200021-126562, FLARE 20FL21-186179, 177008, 200021-181996, 200021-117696, 200020-144473 |
| Paul Scherrer Institut | |
| Horizon 2020 Framework Programme | 716651 |
| Horizon 2020 Framework Programme | |
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | 186179, 200020-188700 |
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | |
| Fonds Wetenschappelijk Onderzoek | GOA/2010/10 |
| Fonds Wetenschappelijk Onderzoek | |
| Agence Nationale de la Recherche | ANR-14-CE33-0007 |
| Agence Nationale de la Recherche |
ASJC Scopus subject areas
- Engineering (miscellaneous)
- Physics and Astronomy (miscellaneous)