Author: Edwards, R.L.
Paper Title Page
WEPPP033 Design of a Wakefield Experiment in a Traveling-wave Photonic Band Gap Accelerating Structure 2798
  • E.I. Simakov, R.L. Edwards
    LANL, Los Alamos, New Mexico, USA
  Funding: This work is supported by the U.S. Department of Energy (DOE) Office of Science Early Career Research Program.
We designed an experiment to conduct a thorough investigation of higher order mode spectrum in a room-temperature traveling-wave photonic band gap (PBG) accelerating structure at 11.7 GHz. It has been long recognized that PBG structures have great potential in reducing long-range wakefields in accelerators. The first ever demonstration of acceleration in room-temperature PBG structures was conducted at MIT in 2005. Since then, the importance of that device has been recognized by many research institutions. However, the full experimental characterization of the wakefield spectrum in a beam test has not been performed to date. The Argonne Wakefield Accelerator (AWA) test facility at the Argonne National Laboratory represents a perfect site where this evaluation could be conducted with a single high charge electron bunch and with a train of bunches. We present the design of the accelerating structure that will be tested at AWA in the near future. The structure will consist of sixteen 2pi/3 PBG cells, including two coupler cells. We will also present the results of the initial cold-testing of the few sample cells and a plan for the beam test.