Author: Campese, T.J.
Paper Title Page
TUPF11 Design and Initial Demonstration Results of Laser Wire Scanner for Energy Recovery Linacs 525
  • B.T. Jacobson, T.J. Campese, A.Y. Murokh
    RadiaBeam, Santa Monica, USA
  • A.C. Bartnik, B.M. Dunham
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  Energy Recovery LINACs (ERL's) can produce electron beams of smaller emittance than in synchrotron rings, with high average current, and without inefficiencies involved in dumping a high-powered accelerated beam. The ERL group at the Cornell Lab for Accelerator-based ScienceS and Education (CLASSE) is currently testing an injector for an ERL based X-ray light source: a superconducting RF (SRF) accelerator coupled to a DC electron gun and high rep rate (1.3 GHz) photocathode drive laser, capable of producing a CW beam of 80 pC bunches (100 mA ave current). Traditional transverse diagnostics are incapable of operation with such high average currents, motivating the the use of a Laser Wire Scanner (LWS). RadiaBeam Technologies, in collaboration with the Cornell ERL group, is developing a LWS system capable of measuring e-beam profiles in both transverse dimensions as well as obtaining the longitudinal beam profile. Due to the low energy of the injector output (5-15 MeV) and beam halo scraping, detection of laser-scattered photons is significantly more challenging than in previous LWS system. This contribution presents a LWS prototype design and initial demonstration results.