Author: Grandsaert, T.J.
Paper Title Page
WEPWA080 Development of a Compact Insertion Device for Coherent Sub-mm Generation 2295
  • A.V. Smirnov, R.B. Agustsson, S. Boucher, T.J. Grandsaert, J.J. Hartzell, M. Ruelas, S. Storms
    RadiaBeam, Santa Monica, USA
  • A. Andrews, B.L. Berls, C.F. Eckman, K. Folkman, A.W. Hunt, Y. Kim, A.E. Knowles-Swingle, C. O'Neill, M. Smith
    IAC, Pocatello, IDAHO, USA
  • P. Buaphad, Y. Kim
    ISU, Pocatello, Idaho, USA
  Funding: Department of Energy Contracts DE- SC-FOA-0000760 and DE-FG02-07ER84877
A novel design of resonant Cherenkov wakefield extractor that produced a ~0.9 mm wavelength radiation is presented. The experiment was performed at Idaho Accelerator Center (IAC) using specially upgraded 1.3 GHz 44 MeV linac facility. Specifics of the radiator performance and design are outlined including low-energy beam interaction with non-circular geometry. Some elements of the design may have certain potential for future compact mm-sub-mm-wave sources.
WEPWA081 Status of the Praseodymium Undulator with Textured Dysprosium Poles for Compact X-Ray FEL Applications 2298
  • F.H. O'Shea, R.B. Agustsson, Y.C. Chen, T.J. Grandsaert, A.Y. Murokh, K.E. Woods
    RadiaBeam, Santa Monica, USA
  • J. Park, R.L. Stillwell
    NHMFL, Tallahassee, Florida, USA
  • V. Solovyov
    BNL, Upton, Long Island, New York, USA
  The demand for high-brightness hard x-ray fluxes from next generation light sources has spurred the development of insertion devices with shorter periods and higher fields than is feasible with conventional materials and designs. RadiaBeam Technologies is currently developing a novel high peak field, ultrashort period undulator with praseodymium-iron-boron (PrFeB) permanent magnets and textured dysprosium (Tx Dy) ferromagnetic field concentrators. This device will offer an unparalleled solution for compact x-ray light sources, as well as for demanding applications at conventional synchrotron radiation sources. A 1.4T on-axis field has already been achieved in a 9mm period undulator, demonstrating the feasibility of using Tx Dy poles in a hybrid undulator configuration with PrFeB magnets. Facets of the undulator design, optimization of the Tx Dy production and characterization process, and magnetic measurements of Tx Dy will be presented.