4-8 August 2015
America/Detroit timezone

High-Gradient, Millimeter Wave Accelerating Structure

7 Aug 2015, 17:24
18m
Koessler (Michigan League)

Koessler

Michigan League

Speaker

Dr Sergey Kuzikov (Institute of Applied Physics)

Description

The millimeter wave all-metallic accelerating structure, aimed to provide more than 100 MeV/m gradient and fed by feeding RF pulses of 20-30 ns duration, is proposed. The structure is based on a waveguide with small helical corrugation. Each section of 10-20 wavelengths long has big circular cross-section aperture comparable with wavelength. Because short wavelength structures are expected to be critical to wakefields excitation and emittance growth, we suggest to combine in one structure properties of a linear accelerator and a cooling damping ring simultaneously. It provides acceleration of straight on-axis beam as well as cooling of this beam due to the synchrotron radiation of particles in strong non-synchronous transverse fields. These properties are provided by specific slow eigen mode which consists of two partial waves, TM01 and TM11. Simulations show that shunt impedance can be as high as 100 MOhm/m. Results of the first low-power tests with 30 GHz accelerating section are analyzed.
Oral or Poster Presentation Oral

Primary author

Dr Sergey Kuzikov (Institute of Applied Physics)

Co-authors

Dr Aleksandr Vikharev (Institute of Applied Physics) Dr Nikolay Peskov (Institute of Applied Physics)

Presentation Materials