Title :
Operational results of an improved regulator and trigger system for the ´fast´ raster scanning power supply system constructed at the Bevalac Biomedical Facility
Author :
Stover, G. ; Halliwell, J. ; Ludewigt, B. ; Nyman, M. ; Stradtner, R.
Author_Institution :
Lawrence Berkeley Lab., California Univ., CA, USA
Abstract :
A new and improved regulator and trigger control system has been installed in the fast raster scanning power supply. Initial system testing of the power supply revealed several component and system reliability problems in the fast scanner section. A condensed discussion of the nature of these problems and their subsequent resolution is given. The beam scanning system was developed to achieve a more precise and efficient dose delivery method for radiotherapy treatments. The authors discuss design considerations and measured results and provide further elaboration of subsystem feedback and control functions not discussed in earlier studies.<>
Keywords :
biomedical equipment; nuclear electronics; particle accelerator accessories; power supplies to apparatus; beam scanning system; control functions; dose delivery method; fast raster scanning power supply; fast scanner section; radiotherapy; subsystem feedback; system reliability problems; trigger control system; Actuators; Bridge circuits; Control systems; Magnetic switching; Particle beams; Power supplies; Regulators; Switches; System testing; Thyristors;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164497
