European Physical Journal C: Particles and Fields (Jan 2024)
Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments
- N. J. Ayres,
- G. Ban,
- G. Bison,
- K. Bodek,
- V. Bondar,
- T. Bouillaud,
- D. Bowles,
- E. Chanel,
- W. Chen,
- P.-J. Chiu,
- C. B. Crawford,
- O. Naviliat-Cuncic,
- C. B. Doorenbos,
- S. Emmenegger,
- M. Fertl,
- A. Fratangelo,
- W. C. Griffith,
- Z. D. Grujic,
- P. G. Harris,
- K. Kirch,
- V. Kletzl,
- J. Krempel,
- B. Lauss,
- T. Lefort,
- A. Lejuez,
- R. Li,
- P. Mullan,
- S. Pacura,
- D. Pais,
- F. M. Piegsa,
- I. Rienäcker,
- D. Ries,
- G. Pignol,
- D. Rebreyend,
- S. Roccia,
- D. Rozpedzik,
- W. Saenz-Arevalo,
- P. Schmidt-Wellenburg,
- A. Schnabel,
- E. P. Segarra,
- N. Severijns,
- K. Svirina,
- R. Tavakoli Dinani,
- J. Thorne,
- J. Vankeirsbilck,
- J. Voigt,
- N. Yazdandoost,
- J. Zejma,
- N. Ziehl,
- G. Zsigmond,
- The nEDM collaboration at PSI
Affiliations
- N. J. Ayres
- Institute for Particle Physics and Astrophysics, ETH Zürich
- G. Ban
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen
- G. Bison
- Paul Scherrer Institut
- K. Bodek
- Marian Smoluchowski Institute of Physics, Jagiellonian University
- V. Bondar
- Institute for Particle Physics and Astrophysics, ETH Zürich
- T. Bouillaud
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3
- D. Bowles
- Department of Physics and Astronomy, University of Kentucky
- E. Chanel
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern
- W. Chen
- Institute for Particle Physics and Astrophysics, ETH Zürich
- P.-J. Chiu
- University of Zürich
- C. B. Crawford
- Department of Physics and Astronomy, University of Kentucky
- O. Naviliat-Cuncic
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen
- C. B. Doorenbos
- Institute for Particle Physics and Astrophysics, ETH Zürich
- S. Emmenegger
- Institute for Particle Physics and Astrophysics, ETH Zürich
- M. Fertl
- Institute of Physics, Johannes Gutenberg University
- A. Fratangelo
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern
- W. C. Griffith
- Department of Physics and Astronomy, University of Sussex
- Z. D. Grujic
- Institute of Physics, Photonics Center, University of Belgrade
- P. G. Harris
- Department of Physics and Astronomy, University of Sussex
- K. Kirch
- Institute for Particle Physics and Astrophysics, ETH Zürich
- V. Kletzl
- Institute for Particle Physics and Astrophysics, ETH Zürich
- J. Krempel
- Institute for Particle Physics and Astrophysics, ETH Zürich
- B. Lauss
- Paul Scherrer Institut
- T. Lefort
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen
- A. Lejuez
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen
- R. Li
- Instituut voor Kern-en Stralingsfysica, University of Leuven
- P. Mullan
- Institute for Particle Physics and Astrophysics, ETH Zürich
- S. Pacura
- Marian Smoluchowski Institute of Physics, Jagiellonian University
- D. Pais
- Institute for Particle Physics and Astrophysics, ETH Zürich
- F. M. Piegsa
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern
- I. Rienäcker
- Paul Scherrer Institut
- D. Ries
- Paul Scherrer Institut
- G. Pignol
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3
- D. Rebreyend
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3
- S. Roccia
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3
- D. Rozpedzik
- Marian Smoluchowski Institute of Physics, Jagiellonian University
- W. Saenz-Arevalo
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen
- P. Schmidt-Wellenburg
- Paul Scherrer Institut
- A. Schnabel
- Physikalisch-Technische Bundesanstalt
- E. P. Segarra
- Paul Scherrer Institut
- N. Severijns
- Instituut voor Kern-en Stralingsfysica, University of Leuven
- K. Svirina
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3
- R. Tavakoli Dinani
- Instituut voor Kern-en Stralingsfysica, University of Leuven
- J. Thorne
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern
- J. Vankeirsbilck
- Instituut voor Kern-en Stralingsfysica, University of Leuven
- J. Voigt
- Physikalisch-Technische Bundesanstalt
- N. Yazdandoost
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz
- J. Zejma
- Marian Smoluchowski Institute of Physics, Jagiellonian University
- N. Ziehl
- Institute for Particle Physics and Astrophysics, ETH Zürich
- G. Zsigmond
- Paul Scherrer Institut
- The nEDM collaboration at PSI
- DOI
- https://doi.org/10.1140/epjc/s10052-023-12351-8
- Journal volume & issue
-
Vol. 84,
no. 1
pp. 1 – 9
Abstract
Abstract High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of $$\sim 1.4~\hbox {m}^3$$ ∼ 1.4 m 3 , the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from $$12~\text {h}$$ 12 h down to $$1.5~\text {h}$$ 1.5 h .
