Author: Chen, P.
Paper Title Page
TUP129 Simulation Results of RF Coupler Controllable by Dielectric Fluid 1073
 
  • P. Chen, D. Yu
    DULY Research Inc., Rancho Palos Verdes, California, USA
 
  Funding: Work supported by DOE SBIR Phase I grant No. DE-FG02-09ER85334.
Tunable couplers for adjusting radiofrequency (RF) power coupling into accelerator cavities are useful devices for achieving optimal operation efficiency. Standard mechanical tuners currently used in large accelerator facilities are bulky and complicated. A novel tuner, based on the introduction of dielectric tubes or fluid-filled volumes adjacent to, but separated by window(s) from the coupler, is described. Simulations have shown that the tuner has a fairly large adjustment range and also demonstrated the viability of the tuning concept using fluid circuit.
 
 
TUP130 Experiments on Voltage Droop Compensation for High Power Marx Modulators 1076
 
  • P. Chen, M. Lundquist, D. Yu
    DULY Research Inc., Rancho Palos Verdes, California, USA
 
  Funding: Work supported by DOE SBIR Phase II grant DE-FG02-08ER85052
Marx modulators, promising higher efficiency, longer lifetime and reduced cost compared with existing hard tube modulator options, are under intensive research. In this article, we describe the progress of work on our voltage droop compensation scheme for a Marx modulator. Experimental results on a compensation circuit at moderate voltage are presented.