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Novel, Reliable, and Cost-Effective Input Coupler for High RF Power Applications

Award Information

Department of Energy
Award ID:
Program Year/Program:
2001 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Amac International, Inc.
12050 Jefferson Avenue Suite 328 Newport News, VA 23606
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2001
Title: Novel, Reliable, and Cost-Effective Input Coupler for High RF Power Applications
Agency: DOE
Contract: DE-FG02-00ER86102
Award Amount: $500,000.00


Input couplers capable of carrying high RF power to superconducting accelerating cavities, such as those used in nuclear physics research, are not only expensive but also difficult to process and condition up to their extremely high operating power and field gradient. Particular problems include: (1) secondary electron multipacting, which limits coupler performance; and (2) the need for metal surfaces to be super-clean of contaminants and have very low gas desorption rates. This project will utilize design for manufacturing (DFM) principles that, if applied early in the design phase, could significantly reduce overall costs. The Phase I feasibility study showed that DFM principles could be applied to the coupler design with a unique modular sub-assembly to allow for RF conditioning of major components individually. Increased cost effectiveness along with reduced multipacting and out-gasing was demonstrated. In Phase II, the prototype coupler will be developed, fabricated, and tested for large applications. Three new coating materials and methods, novel joining technology, and multipacting reducing methods will be experimentally investigated

Principal Investigator:

Dr. Quan-Sheng Shu
Principal Investigator

Business Contact:

Small Business Information at Submission:

AMAC International, Inc.
12050 Jefferson Avenue, Suite 348 Newport News, VA 23606

Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Jefferson Laboratory
12000 Jefferson Avenue
Newport News, VA 23606
RI Type: Federally funded R&D center (FFRDC)