What lab testing experiments, applications or projects are you working on currently that require a "low field environment" to protect sensitive devices or equipment from magnetic field disturbances? Recent applications I have learned about such as TEM, STEM, HRTEM, and ACTEM use electron microscopes which are highly sensitive imaging devices that often require magnetic shielding to prevent malfunction errors.
I'm using constant magnetic field of intensity up to 1 Tesla. The experiments are carried out between the cores of the electromagnet. Square cores and a small distance between them give reason to assume that the field in the deformation zone is homogeneous. Deformation zone is located in the space between the cores of the electromagnet. All the electrical appliances (strain measurement, computer) are out coverage area of the magnetic field and do not need protection.
We are dealing with very low magnetic fields for Spacecraft on Science missions. Very low means here an order of magnitude of a few nT, far below the Earth magnetic field. Examples for such science missions are SolarOrbiter, JUICE and BepiColombo. We have to perform a magnetic cleanliness programme, starting with the selection of non magnettic materials, magnetically characterize important components and boxes and put the sensitive instruments on a boom in order to gain some distance to the magnetic sources on board the satellite.
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