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HIGH POWER COAXIAL CYROTRONS

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 14598
Amount: $499,991.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1992
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
20 New England Business Center
Andover, MA 01810
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr Michael E Read
 Principal Investigator
 () -
Business Contact
Phone: (508) 689-0003
Research Institution
N/A
Abstract

HIGH FREQUENCY, HIGH AVERAGE POWER GYROTRONS ARE REQUIRED FOR SEVERAL APPLICATIONS, INCLUDING ELECTRON CYCLOTRON HEATING STARTUP, HEATING, AND PROFILE CONTROL IN FUSION DEVICES. IN THIS PROJECT, THE USE OF COAXIAL CAVITIES AND ANOVEL GUN CONFIGURATION ARE BEING EXPLORED FOR REALIZATION OF SUCH GYROTRONS. INITIAL CALCULATIONS SUPPORTED BY SOVIETEXPERIMENTAL RESULTS INDICATE THAT AN INNER CONDUCTOR CAN SUBSTANTIALLY DECREASE THE MODE COMPETITION IN GYROTRON CAVITIES, ALLOWING THE USE OF LARGE DIAMETERS TO REDUCE OHMIC HEATING. CALCULATIONS SHOW THAT WITH A MODE SIMILAR TO ONE USED IN THE SOVIET UNION TO PRODUCE 1 MW AT 100 GHZ WITH 35% EFFICIENCY, 1 MW AT 280 GHZ CAN BE GENERATED WITH AN OHMIC HEATING POWER LESS THAN 2.5 KW/CM(2). THIS RESULT OFFERS IMPROVEMENTS OVER OTHER DESIGNS FOR THE SAME POWER AND FREQUENCY THAT REQUIRE THE USE OF SUBSTANTIALLY HIGHER ORDER MODES THAN HAVE BEEN USED TO DATE AND MAY SUFFER FROM MODE COMPETITION. IN ADDITION, THE COAXIAL CAVITY GYROTRON HAS A SMALLER DIAMETER ELECTRON GUN, WHICH RREDUCES THE COSTOF BOTH THE TUBE AND THE SUPERCONDUCTING MAGNET. IN PHASE IOF THIS PROJECT, THE PARAMETERS OF A 1-MW CONTINUOUS WAVE (CW), 280-GHZ GYROTRON WILL BE DETERMINED, INCLUDING CAVITY SIZE AND MODE, OHMIC HEATING, EFFICIENCY, GUN DESIGN, AND SUPPORT AND COOLING OF THE INNER CONDUCTOR.

* Information listed above is at the time of submission. *

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