公开(公告)号：US3594885A

公开(公告)日：1971-07-27

申请号：US3594885D

申请日：1969-06-16

Applicant: VARIAN ASSOCIATES

Inventor： MIRAM GEORGE V ,  KUEHNE GERHARD B

IPC: H01J3/02 ,  H01J1/88 ,  H01J9/04 ,  H01J23/06 ,  H01J37/06 ,  H01J9/16 ,  H01J9/44

CPC classification number: H01J9/047

Abstract: Methods for fabricating concave dimpled dispenser cathodes are disclosed. A multicell groove pattern is formed in the concave face of the cathode blank. An array of concave dimples are formed in the cellular regions of the concave emitter face bounded by the cells of the groove pattern. A multicell grid structure is incorporated into the groove pattern. The groove pattern is formable by photoetching, electrical discharge machining or by milling. The grid structure may be brazed into the grooves or merely supported therein in noncontacting relation therewith.

公开(公告)号：US3706002A

公开(公告)日：1972-12-12

申请号：US3706002D

申请日：1970-11-16

Applicant: VARIAN ASSOCIATES

Inventor： MIRAM GEORGE V ,  KUEHNE GERHARD B

IPC: H01J3/02 ,  H01J23/065 ,  H01J25/10

CPC classification number: H01J3/027 ,  H01J3/026 ,  H01J23/065

Abstract: A HIGH POWER MICROWAVE BEAM TUBE IS DISCLOSED EMPLOYING AN IMPROVED ELECTRON GUN. THE ELECTRON GUN INCLUDES AN OUTWARDLY FLARED HIGH VOLTAGE ELECTRICAL INSULATOR FOR INSULATING THE ANODE RELATIVE TO THE CATHODE. THE OUTWARDLY FLARED INSULATOR INCLUDES AN EXTERNAL SHOULDER PORTION ENCIRCLING THE FLARED MEBER, SUCH SHOULDER BEING DISPOSED INTERMEDIATE THE LENGTH OF THE FLARED MEMBER AND BEING JOINED TO A PORTION OF THE ENVELOPE OF THE GUN TO BE OPERATED AT A POTENTIAL POSITIVE WITH RESPECT TO THE CATHODE POTENTIAL. A FLUID ENCLOSURE ENCLOSES THE WIDE END OF THE FLARED INSULATOR FOR CONTAINING A FLUID COOLANT IN HEAT EXCHANGING RELATION WITH PORTIONSOF THE VACUUM ENVELOPE OF THE GUN FOR COOLING THE GUN IN USE.

公开(公告)号：US3475644A

公开(公告)日：1969-10-28

申请号：US3475644D

申请日：1967-04-14

Applicant: VARIAN ASSOCIATES

Inventor： MIRAM GEORGE V

IPC: H01J23/06 ,  H01J23/08 ,  H01J29/56

CPC classification number: H01J23/06

公开(公告)号：US3522469A

公开(公告)日：1970-08-04

申请号：US3522469D

申请日：1968-04-12

Applicant: VARIAN ASSOCIATES

Inventor： MIRAM GEORGE V

IPC: H01J23/06 ,  H01J23/065 ,  H01J23/087 ,  H01J25/34 ,  H01J23/08

CPC classification number: H01J23/087 ,  H01J23/065

公开(公告)号：US3396339A

公开(公告)日：1968-08-06

申请号：US32701663

申请日：1963-11-29

Applicant: VARIAN ASSOCIATES

Inventor： MIRAM GEORGE V

IPC: F02P17/00 ,  G01R15/16 ,  H02M5/08

CPC classification number: G01R15/16 ,  F02P2017/006 ,  H02M5/08

公开(公告)号：US3636400A

公开(公告)日：1972-01-18

申请号：US3636400D

申请日：1969-07-22

Applicant: VARIAN ASSOCIATES

Inventor： DUCHMANN CHARLES A ,  MIRAM GEORGE V

IPC: H01J1/28 ,  H01J1/14

CPC classification number: H01J1/28 ,  Y10T29/49918 ,  Y10T29/49945 ,  Y10T29/5363

Abstract: Method and apparatus for attaching a dispenser cathode to a support structure is disclosed. The dispenser cathode body includes a peripherally directed groove into which the end of a tubular support structure is crimped. A retaining wire is forced into the groove containing the crimped end of the support to produce an interference fit between the retaining wire, support structure and the cathode body.

公开(公告)号：US3585445A

公开(公告)日：1971-06-15

申请号：US3585445D

申请日：1969-03-03

Applicant: VARIAN ASSOCIATES

Inventor： MIRAM GEORGE V ,  WOOLSEY SAMUEL W

IPC: H01J3/02 ,  H01J9/00

CPC classification number: H01J3/02

Abstract: A method for preserving electron gun assemblies is disclosed. In the method, an electron gun assembly, including a thermionic cathode emitter, is assembled in a vacuum envelope structure. The envelope is evacuated, baked out, and the cathode processed in the conventional manner to activate the cathode. Beam voltages are applied to draw beam current from the gun to test proper operation thereof. These tests may include a test of beam diameter and permeance in the presence of a beam focusing magnetic or electric field. The processed and tested electron gun is then valved off from the rest of the envelope by means of a valve connected to the envelope portion including the electron gun. The valved-off gun is then detached from the vacuum envelope for preserving the electron gun in an operable condition for subsequent use in a second vacuum envelope structure.