New Materials and Technology for Suppressing Multipactor in High Power Microwave Windows
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
High power microwave window development work at the Stanford Linear Accelerator Center for the period June 1973 through January 1974 is given. Emphasis was on development and testing of window coating materials and procedures used to suppress mull&actor in microwave windows. These windows were fabricated from Al2O3 type AL-300 ceramic. Coating materials tested included Cr2O3, oxides of titanium and TiN. The latter material was discovered and evaluated during this program, and was found to have excellent multipactor suppression properties. Also, a new vacuum coating procedure, featuring crossed field diode array sputtering, was developed and successfully used to coat a number of windows. Windows were also evaluated which were coated with TM using vacuum evaporation techniques. Windows were also coated in partial pressures of air, oxygen and argon. Windows featuring these coating materials and techniques were evaluated by testing in a high power microwave storage ring at a frequency of 2.856 GHz. The ring, windows permitting, will operate at peak power levels on the order of 100 Mw at a duly cycle of ~9 x 10-4.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); US Atomic Energy Commission (AEC)
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1453928
- Report Number(s):
- SLAC-R-174; SLAC-174
- Country of Publication:
- United States
- Language:
- English
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