Speaker
Description
As part of the Argonne 500 MeV short pulse Two Beam Wakefield Acceleration Demonstrator, several single cell X-band dielectric disk loaded accelerators (DDA) have been designed, fabricated, and tested at high power at the Argonne Wakefield Accelerator. The DDA should provide a short pulse (~20 ns) high gradient (>100 MV/m) accelerator while maintaining a reasonable r/Q and high group velocity. This will allow a larger RF-to-beam efficiency than is currently possible for conventional accelerating structures. Low loss ceramics with ε$_{r}$ ≈ 50 were selected based on simulation studies to optimize the RF-to-beam efficiency. One brazed and one clamped structure have been tested at high power, with the clamped structure reaching >100 MV/m accelerating gradient. The results of the high power tests will be presented.
Acknowledgments
The work by Euclid Beamlabs LLC was funded
through the U.S. Department of Energy (DOE) under
Small Business Innovation Research Contract No. DE-
SC0019864. The work by the AWA was funded through
the U.S. DOE Office of Science under Contract No. DE-
AC02-06CH11357. Use of the Center for Nanoscale Ma-
terials, an Office of Science user facility, was supported by
the U.S. Department of Energy, Office of Science, Office
of Basic Energy Sciences, under Contract No. DE-AC02-
06CH11357, and under SBIR Phase I Release I 2019,
Contract No. DE-SC0019559.
