Zero Field Chamber Magnetic Shield
Oak Ridge National Lab
This custom magnetic shield was manufactured to shield the spherical neutron polarimetry device from stray magnetic fields. The device uses neutrons which add advanced polarization capability for measuring magnetic materials. The shield is a two-layer chamber made from our .080” thick MuMETAL® material.
SuperCDMS Magnetic Shield
Fermi National Lab
We have fabricated a very large magnetic shield for Fermilab to be used in the Super Cryogenic Dark Matter Search. The experiment will operate underground at Canadian laboratory SNOLAB where 6,800 feet of rock provide a natural shield from high-energy particles from space, called cosmic rays. The 80-inch diameter shield will act as a defense against the ambient magnetic fields which affect the SQUIDs located inside the experiment. To limit the mass of the shield, it was fabricated from thin .040” [1mm] thick MuMETAL®. One challenge of this project was packaging to survive a long journey to the experimental site underground. The shield will travel over 1 mile down an elevator, through a long narrow tunnel, and into a clean room.