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Design of a 10 MW, 91 GHz Gyroklystron for Linear Accelerators--Calabazas Creek Research, 20937 Comer Drive, Saratoga, CA 95070-3753; 408-741-8680
Dr. Jeffrey Neilson, Principal Investigator
Dr. R. Lawrence Ives, Business Official
DOE Grant No. DE-FG03-99ER82754
Amount: $100,000
In recent design scenarios for advanced linear colliders with center-of-mass energies above 1 TeV, the expected radio frequency (RF) drive frequency is typically above X-Band. Unfortunately, the capability of current RF source technology in terms of peak power is several orders of magnitude below anticipated requirements. It has been well demonstrated in the past that gyrotrons significantly outperform conventional tubes in the millimeter regime. This project will utilize gyroklystron technology with state-of-the-art X-Band klystrons to develop a gyroklystron tube at 91.392 GHz that has a peak power capability about 3 orders of magnitude above the state-of-the-art for linear tubes. Phase I will design and characterize the anticipated performance of a 10 MW W-Band gyroklystron amplifier for advanced linear collider applications. Critical components will be investigated, including the electron gun, the magnetic field coils, the microwave circuit, the input system, the output waveguide and conditioning system, and an energy recovery system. Ultimately, a source will be produced that is capable of testing W-Band accelerator components and (with pulse compression) capable of driving a W-Band accelerator structure.
Commercial Applications and Other Benefits as described by the awardee: High power W-Band sources should have applicability at research centers to test the viability of W-Band accelerator components in terms of breakdown fields, peak and average power capabilities, etc. The tube could also power an accelerator structure to look at issues such as dark current. Other potential applications include land- and ship-based radars, medical accelerators, and materials processing.