Title :
A development of automatic tuning for high energy beamlines at HIMAC
Author :
Torikoshi, M. ; Noda, K. ; Takada, E. ; Tsubuku, H. ; Kai, S. ; Katsumata, T.
Author_Institution :
Nat. Inst. of Radiol. Sci., Chiba, Japan
Abstract :
A beamline tuning system based on automatic procedure for steering a beam with observing the beam position has been under development for the transport of high energy beams at HIMAC. A daily beamline tuning for radiotherapy and for most biological experiments is carried out to precisely transport the beam to beam delivery devices. This system replays the daily procedure automatically. A beam is steered using steering magnets in accordance with the deviation of beam positions from intended beam positions. How much the beam positions shift due to adjusting a steering magnet is determined by the beam optics design. Therefore, if correlation between deflection angles at the steering magnets and variations in the beam position measured by wire-grids are known, the deflection angles can be calculated by solving linear simultaneous equations. The correlation was measured and compared with those calculated. Most of them are in good agreement. At present, the beamline tuning for delivering beams to the biological experiment room is finished in about 10 minutes automatically
Keywords :
accelerator magnets; beam handling techniques; biomedical equipment; electromagnets; ion accelerators; ion optics; particle beam diagnostics; radiation therapy; synchrotrons; 10 min; HIMAC; automatic tuning; beam optics; beam position observation; beam positions shift; beam steering; beamline tuning system; biological experiment room; deflection angles; heavy ion medical accelerator; high energy beamlines; high energy beams transport; linear simultaneous equations; radiotherapy; steering magnets; synchrotron; Acceleration; Biomedical optical imaging; Equations; Magnets; Optical beams; Optical design; Particle beams; Position measurement; Power engineering and energy; Synchrotrons;
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.1999.795531
