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    • 6. 发明专利
    • RADIATING LIGHT DEVICE
    • JPS63314800A
    • 1988-12-22
    • JP15012387
    • 1987-06-18
    • TOSHIBA CORP
    • SATO YOSHIHISA
    • H05H13/04
    • PURPOSE:To have frequently repeated operation by using a resonance power supply as a power supply for excitation of an electric magnet, and by using the positive and negative waveforms in resonance to acceleration of electron beam. CONSTITUTION:An electron beam emitted by a linear accelerator 1 is deviated upward by a beam distributing magnet 4 and irradiated to a synchrotron 2. Electric magnets of this synchrotron 2 are excited in sinusoidally wave by a resonance power supply composed of a charging power supply 6, a capacitor 6, and a load for electric magnets. The electron beam irradiated at this time passes another beam distributing magnet 5 to be irradiated to an accumulator ring 3 and accumulated there. Then the electric magnets are demagnetized sinusoidally and vibrated in the opposite direction. Then the electron beam emitted by the accelerator 1 passes the magnet 4 and is deviated downward to be irradiated to the synchrotron 2. The electrons are accelerated while turned reversely with excitation of the electric magnets, and upon attaining the final energy, irradiated to the ring 3 to be accumulated. This process is repeated to provide accumulation of large current at the ring 3.
    • 10. 发明专利
    • ELECTROMAGNETIC CIRCUIT UNIT FOR ACCELERATOR
    • JPH01235197A
    • 1989-09-20
    • JP5925788
    • 1988-03-15
    • TOSHIBA CORP
    • SATO YOSHIHISA
    • H05H7/04
    • PURPOSE:To make it possible to accelerate current attenuation through lowered voltage generated in a circuit by way of reduced resistance when the current is big and through raised resistance along with decrease of the current, by setting up a unit comprising discharging resistors and discharging switches mutually connected in parallel, and turning off the switches successively. CONSTITUTION:This is an electromagnetic circuit unit for accelerator that an electromagnet, via an excitation switch 3, to a direct current power supply 1 that obtains direct current through a transformer from an AC power supply stem 10, and is provided with a number of units each of which has each discharging resistor (41 to 4n) and each discharging switch (51 to 5n) arranged in series circuits in parallel with the excitation switch 3. Namely, a number of units each having each discharging resistor (41 to 4n) and each discharging switch (51 to 5n) arranged in series connection are connected to the excitation switch in parallel, and when current is big at the onset of demagnetization brought about by turning the excitation switch off (open), the total discharging resistance is kept small by maintaining on (connected) state of the discharging switch of each unit. With this procedure it is possible to reduce voltage generated in the circuit, raise resistance by turning off the discharging switches successively along with reduction of current, thereby accelerating attenuation of current.