Author/Authors :
Li، نويسنده , , Yolanda H. and Bernal، نويسنده , , S. and Godlove، نويسنده , , T. and Huo، نويسنده , , Y. and Kishek، نويسنده , , R.A and Haber، نويسنده , , I. and Quinn، نويسنده , , B. and Walter، نويسنده , , M. and Zou، نويسنده , , Y. and Reiser، نويسنده , , M. and O’Shea، نويسنده , , P.G.، نويسنده ,
Abstract :
The transport of intense beams for heavy-ion inertial fusion demands tight control of beam characteristics from the source to the target. The University of Maryland Electron Ring (UMER), which uses a low-energy (10 keV), high-current electron beam to model the transport physics of a future recirculator driver, employs real-time beam characterization and control in order to optimize beam quality throughout the strong focusing lattice. We describe the main components and operation of the diagnostics/control system in UMER. It employs phosphor screens, real-time image analysis, quadrupole scans and electronic skew correctors. The procedure is not only indispensable for optimum transport over a long distance, but also provides important insights into the beam physics involved. We discuss control/optimization issues related to beam steering, quadrupole rotation errors and rms envelope matching.
Keywords :
beam steering , Beam diagnostics and control , Quadrupole errors , Beam matching , Space-charge
