Author: Ivanov, B.L.
Paper Title Page
TUPSM24 Operation of a Diamond Field-Emission-Array Cathode in an L-Band RF-Gun 685
 
  • P. Piot, B.R. Blomberg, D. Mihalcea, H. Panuganti
    Northern Illinois University, DeKalb, Illinois, USA
  • C.A. Brau, B.K. Choi, B.L. Ivanov, J.D. Jarvis, M.H. Mendenhall
    Vanderbilt University, Nashville, USA
  • W.E. Gabella
    Vanderbilt University, W.M. Keck Foundation Free-Electron Laser Center, Nashville, USA
  • P. Piot
    Fermilab, Batavia, USA
 
  We report on the operation of a field-emission diamond cathode in a L-band RF-gun (1.3 GHz) at Fermilab's HBESL facility. The diamond cathode consists of an array of a million sub-micrometric pyramidal diamond tips. Beam currents in excess of 10 mA were observed and the cathode did not show appreciable signs of degradation after days of operation. Measured Fowler-Nordheim characteristics and transverse beam densities are also reported.