Title :
Meander-line current structure for SNS fast beam chopper
Author :
Kurennoy, S.S. ; Power, J.F. ; Schrage, D.L.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
A new current structure for the fast traveling-wave 2.5 MeV beam chopper for the Spallation Neutron Source (SNS) project has been proposed. It is based on the meander-folded straight or notched stripline with separators. Detailed electromagnetic modeling with MAFIA has been used to optimize the structure design and parameters. The time-domain 3D MAFIA simulations predict the structure rise and fall times around 1 ns. A notched meander line with a dielectric substrate has been developed to accommodate both electromagnetic and mechanical requirements
Keywords :
beam choppers; linear accelerators; proton accelerators; time-domain analysis; 2.5 MeV; SNS fast beam chopper; Spallation Neutron Source; dielectric substrate; electromagnetic modeling; meander-line current structure; notched meander line; notched stripline; time-domain 3D MAFIA simulations; Choppers; Conductivity; Dielectric constant; Dielectric losses; Dielectric materials; Frequency; Linear particle accelerator; Neutrons; Particle separators; Stripline;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.795561
