Test apparatus, system, and method with a magnetic feature

1. A magnetic test apparatus comprising:

a rotor coupled to a drive shaft, wherein the drive shaft is mechanically coupled to a drive system;

a stator coupled to at least one brush holder;

at least one brush held by the at least one brush holder, wherein the at least one brush is held in contact with the rotor;

a housing for supporting the rotor and the stator;

a magnet for providing a magnetic field in the vicinity of the at least one brush; and

a magnet housing for housing the magnet,

wherein the magnet comprises a superconducting magnet, and

wherein the magnet housing comprises a vacuum sealed super-cooling housing.

2. The magnetic test apparatus of claim 1 , further comprising at least one gas supply tube to deliver gas to the at least one brush holder in order to control the contact pressure of the at least one brush to the rotor.

3. The magnetic test apparatus of claim 1 further comprising an environmental chamber enclosing the rotor and the at least one brush.

4. The magnetic test apparatus of claim 3 further comprising at least one data acquisition connector.

5. The magnetic test apparatus of claim 1 further comprising:

a first power supply connector for supplying power to the at least one brush; and

a second power supply connector for supplying power to the magnet.

6. The magnetic test apparatus of claim 1 wherein the drive system compromises a motor and drive belt coupled to the drive shaft.

7. The magnetic test apparatus of claim 1 further comprising a support structure for supporting the housing, the stator, the rotor and the drive shaft.

8. A magnetic test apparatus systems comprising:

a magnetic test apparatus comprising:

a stator;

at least one brush holder coupled to the stator;

a at least one brush held by the at least one brush holder;

a rotor position to contact the at least one brush;

a drive shaft coupled to the rotor; and

a magnet for supplying a magnetic field where the at least one brush contacts the rotor; and

a magnet housing for housing the magnet,

wherein the magnet comprises a superconducting magnet, and

wherein the magnet housing comprises a vacuum sealed super-cooling housing,

a drive system coupled to the drive shaft;

a power supply for providing power to the at least one brush; and

a power supply for providing power to the magnet.

9. The magnetic test apparatus system of claim 8 further comprising an environmental chamber enclosing the rotor and the at least one brush.

10. The magnetic test apparatus system of claim 9 further comprising a data acquisition system coupled to the magnetic test apparatus.

11. The magnetic test apparatus system of claim 9 further comprising an environmental delivery system for supplying gas to the environmental chamber.

12. The magnetic test apparatus system of claim 8 further comprising a gas delivery system for supplying gas to the at least one brush holder.

13. The magnetic test apparatus system of claim 8 further comprising a chiller coupled to the magnetic test apparatus for controlling the temperature of the rotor and at least one brush.

14. The magnetic test apparatus system of claim 8 , further comprising a cryo-cooler for cooling the superconducting magnet.

15. A method of testing at least one brush, comprising:

rotating a rotor of a magnetic test apparatus;

providing power from a brush power supply to at least one brush in contact with the rotor;

providing power from a magnet power supply to a magnet; and

generating a magnetic field from the magnet in the vicinity of the at least one brush and the rotor; and

providing a magnet housing for housing the magnet,

wherein the magnet comprises a superconducting magnet, and

wherein the magnet housing providing step comprises providing a vacuum sealed super-cooling housing.

16. The method of claim 15 further comprising acquiring data related to the operation of the at least one brush.

17. The method of claim 16 further comprising providing gas to an environmental chamber enclosing the rotor and the at least one brush.

18. The method of claim 17 further comprising acquiring at least one of temperature data and pressure data within the environmental chamber.