RSI22-AR-01133.pdf (3.82 MB)
The very large n2EDM magnetically shielded room with an exceptional performance for fundamental physics measurements
journal contribution
posted on 2023-06-10, 05:18 authored by N J Ayres, G Ban, G Bison, K Bodek, V Bondar, T Bouillaud, B Clement, E Chanel, PJ Chiu, CB Crawford, M Daum, CB Doorenbos, S Emmenegger, Clark GriffithClark Griffith, Philip Harris, othersWe present the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute, which features an interior cubic volume with each side of length 2.92 m, thus providing an accessible space of 25 m3. The MSR has 87 openings of diameter up to 220 mm for operating the experimental apparatus inside and an intermediate space between the layers for housing sensitive signal processing electronics. The characterization measurements show a remanent magnetic field in the central 1 m3 below 100 pT and a field below 600 pT in the entire inner volume, up to 4 cm to the walls. The quasi-static shielding factor at 0.01 Hz measured with a sinusoidal 2 µT peak-to-peak signal is about 100 000 in all three spatial directions and increases rapidly with frequency to reach 108 above 1 Hz.
History
Publication status
- Published
File Version
- Accepted version
Journal
Review of Scientific InstrumentsISSN
0034-6748Publisher
AIP PublishingExternal DOI
Issue
9Volume
93Page range
a095105 1-11Event location
United StatesDepartment affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes