Development status of a 10 MW, 91 GHz gyroklystron

Calabazas Creek Research Inc. (CCR) is funded by the US Department of Energy to develop a high efficiency gyroklystron amplifier for W-Band linear collider applications. This research supports an international effort to design the next generation of linear electron-positron colliders with anticipated center of mass energies of 0.5 TeV and beyond. In particular, this program supports development of a W-band accelerator now underway at the Stanford Linear Accelerator Center. CCR is developing a 91.392 GHz gyroklystron to produce 10 MW of RF power with efficiency greater than 40% and a gain of 55 dB. Achievement of 10 MW of peak power would advance the state of the art for W-Band amplifiers by two orders of magnitude and potentially lead to other applications, including land- and ship-based radar, medical accelerators, and materials processing. This presentation briefly describes the design of the tube and then covers the results of the cold tests and the schedule for hot tests.