Title :
Power supply system for a compact 1.2 GEV booster synchrotron
Author :
Popov, V. ; Busch, M. ; Hartman, S. ; Mikhailov, S. ; Oakeley, O. ; Wallace, P. ; Wu, Y.K.
Author_Institution :
Duke Univ., Durham
Abstract :
Low cost power supply system for compact full energy booster synchrotron was designed, developed and successfully commissioned at Duke University. 500 kW second hand thyristor controlled power supply has been completely rebuilt to provide high accuracy ramping of current in the range between 150 A and 700 A in a 1.3 sec repetition cycle. Reproducibility of current at injection and extraction energy of better than 0.2 % was achieved. Conflict of requirements of a fast ramp operation and a magnet protection in the case of emergency shutdown was resolved by means of additional thyristor switches. All trim power supplies involved in ramp have been matched with main power supply for the time response and voltage range. Vertical injection to and extraction from the booster requires a strong Y-bump. Combination of low voltage DC power supply and pulse boosting circuit has eliminated the need of expensive power supply for peak power about 4 kW. Challenges of design, main parameters of the booster power supply system and discussion of operation experience are presented in this paper.
Keywords :
power supplies to apparatus; switches; synchrotrons; thyristors; Y-bump; booster synchrotron; current 150 A to 700 A; current ramping; electron volt energy 1.2 GeV; fast ramp operation; low-voltage DC power supply; magnet protection; power 500 kW; power supply system; pulse boosting circuit; thyristor controlled power supply; thyristor switches; time 1.3 s; Control systems; Costs; Energy resolution; Power supplies; Protection; Pulsed power supplies; Reproducibility of results; Switches; Synchrotrons; Thyristors;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440265