A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Newsham, D.J.

Paper Title Page
TU5PFP014 Novel Acceleration Structure Using Slot Resonance Coupling 839
 
  • N. Barov, J.S. Kim, R.H. Miller, D.J. Newsham
    Far-Tech, Inc., San Diego, California
  
 

We describe a novel acceleration structure for acceleration of electron and ion beams where the cell-to-cell coupling is provided by slot resonances in the wall of adjacent accelerator cells. As with the side-coupled linac, the concept allows for the operation of a standing-wave structure in a phase and amplitude stabilized pi/2 mode. We explore the applications of such a structure to electron and ion accelerators.

  
TU5PFP015 A Compact, Low-Voltage Multi-Beam Klystron for 1300 MHz Cryomodules 842
 
  • N. Barov, J.S. Kim, D.J. Newsham
    Far-Tech, Inc., San Diego, California
  
 

We describe the design and construction status of a compact, 830 kW multi-beam klystron (MBK) for driving 1300 MHz cryomodules. The applications for this tube range from ILC and ILC test facilites to Project X. The use of low gun voltage (36 kV) simplifies the modulator and gun socket requirements. A high efficiency, predicted to be > 65%, will allow the klystron to be used in applications requiring low overall site power and high wallplug efficiency.

  
TU5PFP016 Rapidly Tunable RF Cavity for FFAG Accelerators 843
 
  • D.J. Newsham, N. Barov, J.S. Kim
    Far-Tech, Inc., San Diego, California
  
 

The fixed-field alternate gradient (FFAG) synchrotron offers an attractive solution for systems that require rapid acceleration over a wide range of energies. The ability to rapidly tune the frequency of the accelerating cavity in the “non-scaling” variety of an FFAG synchrotron represents a fundamental barrier to their implementation in a wide variety of applications for proton, ion and muon acceleration. Initial results of the rapidly tunable cavity design for specific application to proton and light ion medical FFAG accelerators are presented.

  
TH5RFP040 Resonant-Cavity Diagnostics for an Emittance Exchange Experiment 3537
 
  • N. Barov, J.S. Kim, D.J. Newsham
    Far-Tech, Inc., San Diego, California
  
 

The emittance exchange experiment planned at the Argonne Wakefiel Accelerator facility will rely on a set of cavity-based beam diagnostics in order to map the transport matrix through the beamline. These will include cavity BPM and time-of-flight diagnostics, as well as quadrupole cavity x-y coupling diagnostics. The measurement system will be designed to fit within compact space requirements, while also maintaining a sufficient clear aperture and sensitivity. The RF design of the system, as well as RF cold-test data for the BPM cavities, is presented.