Author: Kusche, K.
Paper Title Page
THPAC32 Transverse Beam Profile Diagnostic Using Fiber Optic Array 1205
 
  • S. Wu, R.B. Agustsson, G. Andonian, T.J. Campese, A.Y. Murokh
    RadiaBeam, Santa Monica, USA
  • M.G. Fedurin, K. Kusche, R. Malone, C. Swinson
    BNL, Upton, Long Island, New York, USA
  • R.K. Li
    UCLA, Los Angeles, California, USA
 
  Funding: This work is supported by U.S. D.O.E Contract Number DE-SC0000870
The fiber-mesh diagnostic (FMD) is a transverse beam profile diagnostic based on the emission and detection of Cherenkov radiation produced as a relativistic electron beam traverses through an ordered bundle of fiber optics (SiO2), arranged in a hexagonal close-pack configuration. Sub-10μm transverse beam profile resolution is attainable due to fiber optic core concentricity. Adequate SNR is achieved using a standard CCD sensor. A fiber optic taper input maximizes light collection efficiency by coupling each output channel to approximately single-pixel pitch. A v-groove holder and assembly process was developed to hold many fiber layers in the desired configuration. In this paper, we present results from a fully functional FMD prototype evaluated at the BNL ATF facility that demonstrates the efficacy of this diagnostic.