Title :
Upgrade of the main ring magnet power supply for the KEK 12 GeV proton synchrotron
Author :
Sat, H. ; Sueno, T. ; Toyama, T. ; Mikawa, M. ; Toda, T. ; Matsumoto, S.
Author_Institution :
Nat. Lab. for High Energy Phys., Tsukuba, Japan
Abstract :
In order to use the slow extracted beam of the KEK (Japan National Laboratory for High Energy Physics) proton synchrotron more effectively, the period of slow extraction has been extended. An upgrade of the main ring magnet power supply is described. The main power supply consists of thyristor rectifiers, DC filters, reactive power compensators, AC harmonic filters and control systems. To increase the current capacity during flat top, the rectifiers and transformers were improved. The AC network and DC filters were left unchanged, since the acceleration and deceleration times were not varied. Analog control devices and the computer control software have also been improved to realize a 2 s flat top with a 4 s repetition rate, compared with the former 0.6 s flat top with a 2.5 s repetition rate.<>
Keywords :
beam handling equipment; beam handling techniques; proton accelerators; synchrotrons; AC harmonic filters; AC network; DC filters; KEK 12 GeV proton synchrotron; computer control software; control systems; current capacity; flat top; main ring magnet power supply; reactive power compensators; repetition rate; slow extracted beam; thyristor rectifiers; Laboratories; Magnetic separation; Particle beams; Power filters; Power harmonic filters; Power supplies; Protons; Rectifiers; Synchrotrons; 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.1991.164486
