학술논문
Operational experience with resonantly extracted beams
Document Type
Conference
Author
Source
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268) Particle accelerator conference Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001. 4:2587-2589 vol.4 2001
Subject
Language
Abstract
The MIT-Bates Linear Accelerator has completed a major nuclear physics experiment using high duty factor electron beam resonantly extracted from the South Hall Ring. Average currents up to 8 /spl mu/A at energies from 569 to 950 MeV were delivered to the new Out Of Plane Spectrometer System, with typical duty factors of 60%. Throughput efficiencies, measured as the ratio of beam current injected into the ring to that delivered to experiment, were 80-90%. The extraction process was repeated at a 600 Hz repetition rate, giving storage times much shorter than the beam damping time. Thus, beam dynamics were exclusively in a transient state. Details of the operational experience, including important aspects of beam set-up, on-line monitoring, and maintenance, are presented.