WE2A —  Invited Oral Presentations   (12-Sep-12   11:00—12:10)
Chair: H.W. Zhao, IMP, Lanzhou, People's Republic of China
Paper Title Page
WE2A01 RF Power Production at the Two Beam Test Stand at CERN 738
  • I. Syratchev
    CERN, Geneva, Switzerland
  The generation of short (250 ns) high peak power (135 MW) RF pulses by decelerating the high current (100 A) bunched (12 GHz) drive beam is one of the key components in the CLIC two beam acceleration scheme. Recent tests with drive beam deceleration at CERN's CTF3, using specially developed 1 m long CLIC Power Extraction and Transfer Structure (PETS) operated in re-circulation regime have successfully demonstrated this concept. The results of these tests are presented.  
slides icon Slides WE2A01 [2.636 MB]  
WE2A02 Solid State Marx Modulators for Emerging Applications 743
  • M.A. Kemp
    SLAC, Menlo Park, California, USA
  A class of intelligent, Marx-topology modulators are under development at SLAC. These modulators combine numerous advanced features that could be employed in any significant new HPRF installation. The talk will describe the design features and operational experience.  
slides icon Slides WE2A02 [1.117 MB]  
High-Field Short-Period Microwave Undulators  
  • J. Neilson
    SLAC, Menlo Park, California, USA
  Inspired by recent developments in low-loss overmoded components and systems for ultra-high power RF systems, we explored several overmoded waveguide systems that could function as RF undulators. One promising structure is a corrugated waveguide system operating using the balanced hybrid HE11 mode. Initial calculations indicate that such a system can be operated at relatively low power levels while obtaining large values for the undulator parameters K~1. RF surface fields are typically low enough to permit superconducting operation. This technology can realize an undulator with short wavelengths and gives dynamic control of the undulator parameters including polarization. The scaling laws are verified through simulations and experimental data. The single electron dynamics, for both linearly polarized and circularly polarized (CP) standing wave undulator synthesized from this corrugated waveguide, will be presented. We will present our optimization strategy for such a geometry which not only need to taper the field profile but also have to maintain low losses and low surface fields.  
slides icon Slides WE2A03 [5.749 MB]