Advanced Output Coupling for High Power Gyrotrons
- Calabazas Creek Research, Inc., San Mateo, CA (United States)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- General Atomics, La Jolla, CA (United States)
- Lexam Research, Redwood City, CA (United States)
The Phase II program developed an internal RF coupler that transforms the whispering gallery RF mode produced in gyrotron cavities to an HE11 waveguide mode propagating in corrugated waveguide. This power is extracted from the vacuum using a broadband, chemical vapor deposited (CVD) diamond, Brewster angle window capable of transmitting more than 1.5 MW CW of RF power over a broad range of frequencies. This coupling system eliminates the Mirror Optical Units now required to externally couple Gaussian output power into corrugated waveguide, significantly reducing system cost and increasing efficiency. The program simulated the performance using a broad range of advanced computer codes to optimize the design. Both a direct coupler and Brewster angle window were built and tested at low and high power. Test results confirmed the performance of both devices and demonstrated they are capable of achieving the required performance for scientific, defense, industrial, and medical applications.
- Research Organization:
- Calabazas Creek Research, Inc., San Mateo, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Contributing Organization:
- Massachusetts Institute of Technology
- DOE Contract Number:
- SC0006212
- OSTI ID:
- 1333531
- Report Number(s):
- Final Report
- Country of Publication:
- United States
- Language:
- English
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