Title :
Operational results for the raster scanning power supply system constructed at the Bevalac Biomedical Facility
Author :
Stover, G. ; Halliwell, J. ; Nyman, M. ; Dwinell, R.
Author_Institution :
Lawrence Berkeley Lab., California Univ., CA, USA
Abstract :
A raster scanning power supply for controlling an 8.0-T-m relativistic heavy-ion beam at the Bevalac Biomedical Facility has been completed recently and is undergoing electrical testing before online operation in 1989. The scanner system will provide tightly controlled beam uniformity and off-axis treatment profiles with large aspect ratios and unusual dimensions. Original specifications, agreement with measured results, and special device performance (i.e. gate turn-on thyristor switches, field-effect transistor actuator assembly, etc.) are discussed. Firing circuit tests have been completed, and full four quadrant operation with the beam through the magnet was demonstrated on March 15, 1989
Keywords :
beam handling equipment; beam handling techniques; ion accelerators; nuclear electronics; power supplies to apparatus; synchrotrons; Bevalac Biomedical Facility; beam uniformity; field-effect transistor actuator assembly; four quadrant operation; gate turn-on thyristor switches; off-axis treatment profiles; online operation; raster scanning power supply; relativistic heavy-ion beam; scanner system; Actuators; Assembly; Biomedical measurements; Circuit testing; Control systems; FETs; Magnetic field measurement; Power supplies; Switches; Thyristors;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.72959
