Narayan K Mahale

US Patent:

55437699, Aug 6, 1996

Filed:

Jan 11, 1995

Appl. No.:

8/371503

Inventors:

Yehuda Goren - Mountain View CA
Narayan K. Mahale - The Woodlands TX

Assignee:

The United States of America as represented by the Department of Energy - Washington DC

International Classification:

H01J 3100

US Classification:

335216

Abstract:

The superconducting magnetic switch or fast kicker magnet is employed with electron stream or a bunch of electrons to rapidly change the direction of flow of the electron stream or bunch of electrons. The apparatus employs a beam tube which is coated with a film of superconducting material. The tube is cooled to a temperature below the superconducting transition temperature and is subjected to a constant magnetic field which is produced by an external dc magnet. The magnetic field produced by the dc magnet is less than the critical field for the superconducting material, thus, creating a Meissner Effect condition. A controllable fast electromagnet is used to provide a magnetic field which supplements that of the dc magnet so that when the fast magnet is energized the combined magnetic field is now greater that the critical field and the superconducting material returns to its normal state allowing the magnetic field to penetrate the tube. This produces an internal field which effects the direction of motion and of the electron stream or electron bunch. The switch can also operate as a switching mechanism for charged particles.