Speaker
Dr
John Power
(Argonne National Laboratory)
Description
The Argonne Wakefield Accelerator (AWA) facility supports an extensive research portfolio along three themes: electron beam production, electron beam manipulation, and electron beam-driven structure wakefield acceleration (SFWA). This talk presents efforts at AWA to explore and exploit short RF pulses (sub-10 ns) to drive accelerating structures to higher gradients. The talk begins with an overview of the AWA facility and a motivation for the short-pulse approach. Research highlights presented include:
- Power Generation. Demonstration of X-band (11.7 GHz) two-beam acceleration (TBA) power extraction and transfer structures (PETS) based on both a conventional disk loaded waveguide (DLW) and metamaterials (MTM) to generate >500 MW RF pulses.
- Acceleration. Demonstration of X-band (11.7 GHz) TBA accelerating structures based on: dielectric disk accelerators (DDA), MTM structures, and a single-cell DLW structure with peak gradient reaching 300 MV/m.
- Electron source. Development of a sub-GV/m X-band photocathode gun with an unprecedented gradient of 400 MV/m on the photocathode surface.
These results demonstrate the potential of short-pulse RF to achieve high-gradient acceleration at AWA. The talk will conclude with future directions for short-pulse RF research at AWA.
Primary author
Dr
John Power
(Argonne National Laboratory)
Co-authors
Chunguang Jing
Dr
Gongxiaohui Chen
(ANL)
Sarah Weatherly
Xueying Lu
(Northern Illinois Univ / Argonne National Laboratory)
