Title :
Overview of the bump-magnet system at the LANSCE proton storage ring
Author :
Rose, C.R. ; Barlow, D.B. ; Blind, B. ; Neri, F. ; Power, J.F. ; Walstrom, P.L.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
An upgrade program for increasing the stored beam current in the proton storage ring is presently under way. A part of the upgrade is the design and installation of a four-magnet beam-bumping system used for phase-space painting and minimizing interaction of the stored beam with the injection stripper foil. This paper describes the bump-magnet system including the relevant beam requirements, magnet specifications, power-cable specifications, pulsed-modulator requirements, and beam-tube eddy-current effects. The magnets are ferrite window-frame magnets with saddle windings. Series-pass pulsed modulators are programmable both in rise and fall time as well as amplitude. The peak current can be varied between 50 and 300 A. Pulsed-current rise-time is fixed at 1 ms, and the linear fall-time during which the beam is injected into the ring can be varied between 0.5 and 1.5 ms
Keywords :
accelerator magnets; modulators; power cables; proton accelerators; storage rings; 50 to 300 A; LANSCE; beam-tube eddy-current effects; bump-magnet system; ferrite window-frame magnets; four-magnet beam-bumping system; linear fall-time; magnet; peak current; phase-space painting; power-cable; proton storage ring; pulsed-current rise-time; pulsed-modulator; saddle windings; series-pass pulsed modulators; stored beam current; Costs; Eddy currents; Ferrites; Gaussian processes; Magnetic fields; Magnetic flux; Particle beam injection; Protons; Pulse modulation; Storage rings;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749589
