Author: Artinian, S.
Paper Title Page
MOPME005 Goubau Line and Beam Characterization of TURBO-ICT for SwissFEL 476
  • S. Artinian, J.F. Bergoz, F. Stulle
    BERGOZ Instrumentation, Saint Genis Pouilly, France
  • P. Pollet, V. Schlott
    PSI, Villigen PSI, Switzerland
  SwissFEL will be able to operate with electron bunch doublets 28ns apart. Each of the bunches carries 10pC to 200pC of charge with bunch lengths of a few femto-seconds. For charge calibration of the FEL photon pulses, a measurement accuracy of 1% is desired. The Turbo-ICT accomplishes these requirements with negligible beam position and bunch length dependence. It is insensitive to dark current and features high immunity to background noise. We characterize the Turbo-ICT performance on a Goubau line, also known as single-wire transmission line. The Goubau line utilizes electromagnetic fields with frequencies up to many GHz. It allows accurate bench testing including beam position and bunch length dependence. The results are compared to beam measurements performed at the SwissFEL Injector Test Facility (SITF).  
MOPWA062 Transverse Beam Halo Measurements at High Intensity Neutrino Source (HINS) using Vibrating Wire Monitor 819
  • M. Chung, B.M. Hanna, V.E. Scarpine, V.D. Shiltsev, J. Steimel
    Fermilab, Batavia, USA
  • S. Artinian
    BERGOZ Instrumentation, Saint Genis Pouilly, France
  • S.G. Arutunian
    ANSL, Yerevan, Armenia
  Funding: Research supported by the U.S. Department of Energy.
Measurement and control of transverse beam halo will be critical for the applications of future high-intensity hadron linacs. In particular, beam profile monitors require a very high dynamic range when using for transverse beam halo measurements. In this study, the Vibrating Wire Monitor (VWM) with aperture 60 mm was installed at the High Intensity Neutrino Source (HINS) front-end to measure transverse beam halo. A vibrating wire is excited at its resonance frequency with the help of a magnetic feedback loop, and the vibrating and sensitive wires are connected through a balanced arm. The sensitive wire is moved into the beam halo region by a stepper motor controlled translational stage. We study the feasibility of the vibrating wire for transverse beam halo measurements in the low-energy front-end of the proton linac.