Speaker
Description
We present on the fabrication and testing of a 16-cell distributed coupling accelerator operating at 95 GHz. The π-mode standing wave cavities are designed with a side-coupled aperture that enables flexible optimization of the beampipe iris between cells. Simulations of the optimized cavity geometry predict a room temperature shunt impedance exceeding 400 MOhm/m. We also discuss techniques for cold testing and tuning mm-wave accelerators. High power testing of this distributed coupling structure design will be conducted with pulses from a MW gyrotron oscillator, including active pulse compression techniques to achieve higher peak power. With an input power of 1 MW, an energy gain of 3 MeV would be achieved for a relativistic electron beam in this 25 mm linac.
Acknowledgments
This work is supported by U.S. Department of Energy Contract No. DE-AC02-76SF00515, SLAC LDRD project 21-014 and Internal Agency Agreement 21-0007-IA (MIPR HR0011150657).
