Low-voltage modulator for circular induction accelerator

Details Low-voltage modulator for circular induction accelerator Low-voltage modulator for circular induction accelerator

1990-10-16

1991-12-31

Yusko, Donald J.

328237, H01S 2334, H05H 1100

Patent

active

050775308

ABSTRACT:
A modulator circuit for a betatron includes an independent low voltage D.C. powder supply, an intermediate low voltage capacitor connected to one side of the betatron winding, and a high voltage capacitor connected to the other side of the betatron winding. Unidirectional current devices normally permit current flow from the voltage capacitor, through the betatron winding to the high voltage capacitor. Energy is thereby transferred from the power supply and low voltage capacitor through the betatron winding to the high voltage capacitor. Switches are provided selectively to reverse the direction of current flow and thereby discharge the energy stored in both capacitors into the betatron winding to excit the betatron magentic circuit. Upon discharge of the high voltage capacitor, the unidirectional current devices once again restore normal current flow, so that the energy stored in the betatron electromagnet is returned to the high voltage capacitor. Repetition of this charging/discharging/recovery cycle pumps up the charge on the high voltage capacitor and multiplies the voltage.

REFERENCES:
patent: 3975689 (1976-08-01), Geizer et al.
"Thyristor Current-Pulse Generator For Betatron Electromagnet With Independent Low-Voltage Supply", B. A. Baginskii et al., Nuclear Experimental Techniques (Translated from Pribory i Tekhnika Eksperimenta, No. 4, pp. 16-18, Jul.-Aug. 1988; Original Article submitted Dec. 4, 1986, revision submitted Nov. 19, 1987) pp. 832-835.
"An 80-Mev Model of a 300-Mev Betatron", D. W. Kerst et al., The Review of Scientific Instruments, vol. 21, Number 5, May 1950.
"Compact Betatron with Four Controlling-Field Periodicity Elements" Nuclear Techniques, V. L. Chakhlov et al., 0020-4412/86/2904, pp. 787-789, 7/1987.

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