Beam Stability Experiments on DARHT-II

Autor: R.R. Bartsch, S. Eversole, R. Sturgess, Daniel K. Frayer, L. Rowton, C. Carlson, R. Briggs, K.C.D. Chan, J. Studebaker, B.T. McCuistian, M. Sanchez, Thomas Patrick Hughes, R. Temple, H. Bender, W. Broste, D. Dalmas, J. Harrison, G. Durtschi, P. Rodriguez, K. Nielsen, A. Meidinger, Martin Schulze, L. Rodriguez, K. Moy, Carl Ekdahl, D. Johnson, S. Nath, R. Gallegos, R. Scarpetti, E. Jacquez, K. Jones, Martin Schauer, Yan Tang, P. Aragon, David M. Oro, G. Sullivan, Jarrett L. Johnson, D. Simmons, N. Montoya, L. Caudill, A. Tipton, E.O. Abeyta, C.Y. Tom, H.V. Smith, C. Mostrom
Rok vydání: 2005
Předmět:
Zdroj: 2005 IEEE Pulsed Power Conference.
DOI: 10.1109/ppc.2005.300778
Popis: When completed, the DARHT-II linear induction accelerator (LIA) will produce a 2-kA, 18-MeV electron beam with more than 1500-ns current/energy "flat-top." In initial tests DARHT-II has already accelerated beams with current pulse lengths from 500-ns to 1200-ns full- width at half maximum (FWHM) with more than 1.2- kA, 12.5-MeV peak current and energy. New experiments are planned with a ~1600-ns pulse length but with reduced current and energy. These pulse lengths are all significantly longer than any other multi-MeV LIA, and they define a novel regime for high-current beam dynamics, especially with regard to beam stability. Although the initial tests demonstrated absence of BBU, the pulse length was too short to determine whether ion- hose instability would be present toward the end of a pulse longer than 1500-ns. The 1600-ns pulse experiments are designed to resolve these and other beam-dynamics issues with a long-pulse beam.
Databáze: OpenAIRE