The very large n2EDM magnetically shielded room with an exceptional performance for fundamental physics measurements
Abstract
We 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. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000576058Publication status
publishedExternal links
Journal / series
Review of Scientific InstrumentsVolume
Pages / Article No.
Publisher
American Institute of PhysicsOrganisational unit
03864 - Kirch, Klaus / Kirch, Klaus
Funding
200441 - Precision Physics with Muons and Ultracold Neutrons II (SNF)
186179 - n2EDM: The next measurement of the neutron electric dipole moment (SNF)
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