SU430807A1

SU430807A1 - Device for power supply of chargedparticle accelerator electromagnet

Info

Publication number: SU430807A1
Application number: SU7201852496A
Authority: SU
Inventors: О.А. Гусев; Е.Г. Комар
Original assignee: Gusev O A; Komar E G
Priority date: 1972-12-02
Filing date: 1972-12-02
Publication date: 1977-11-05

Description

II

Изобретение относитс к системам птани ускорителей зар женных частиц, например бетатронов и быстрых синхротронов .This invention relates to systems of charged particle accelerators, such as betatrons and fast synchrotrons.

Известно устройство дл питани электромагнита ускорител , содержащее вентильный мост, к диагонали посто нного напр жени которого подсоединен электромагнит ускорител , а к диагонали переменного напр жени - конденсаторна батаре За счет искусственной кoм yтaции при помощи нелинейного магнитного элемента (насыщающегос дроссел , обмотки которого включены в цепи соответствующих вентилей) конденсаторна батаре работает в однопол рном режиме по напр жению.A device for powering an accelerator electromagnet, containing a valve bridge, is connected to the diagonal of a constant voltage, an accelerator electromagnet is connected to it, and a capacitor battery is connected to an alternating voltage diagonal. corresponding valves) the capacitor battery operates in single-pole voltage mode.

Однако при этом длительность заднего фронта импульса магнитного пол ускорител равна длительности переднего фронта импульса, таким образом, длительность холостого хода ускорител равна длительности рабочего хода.However, the duration of the rear edge of the magnetic field pulse of the accelerator is equal to the length of the leading edge of the pulse, thus the duration of the accelerator idling is equal to the duration of the working stroke.

Цель изобретени - обеспечить ускоренный вывод.энергии из электромагмита в конденсаторную батарею после достижени максимального значени маHS-iTHoro пол ,, т.е. уменьшить потери электроэнергии при холостом ходе ускорител и повысить среднюю интенсивность ускоренных частиц. Особенно это важно дл сильноточных бетатронов и быстрых протонных синхротронов, используемых , например, в качестве бустеров дл синхрофазотронов высоких анергий.The purpose of the invention is to provide an accelerated output of energy from electromagnet to a capacitor battery after reaching the maximum value of the HS-iTHoro floor, i.e. reduce power losses when the accelerator is idling and increase the average intensity of accelerated particles. This is especially important for high-current betatrons and fast proton synchrotrons, used, for example, as boosters for high-energy synchrophasotrons.

Цель достигаетс путем переключени секций обмоток электромагнита с последовательного соединени на параллельное после окончани рабочего хода ускорител . Дл этого секции обмоток электромагнита подключены последовательно через управл емые вентили , концы первой и промежуточных секций присоединены с помощью неуправл емых вентилей к положительному выводу, а начала первой и промежуточ ных секций соответственно через другую группу вентилей - к отрицательному выводу конденсатора.The goal is achieved by switching the sections of the electromagnet windings from the series connection to the parallel one after the end of the accelerator stroke. For this section, the electromagnet windings are connected in series through controlled gates, the ends of the first and intermediate sections are connected to the positive terminal with uncontrolled gates, and the beginning of the first and intermediate sections, respectively, through a different group of gates to the negative terminal of the capacitor.

На фиг. 1 показана принципиальна электрическа схема предлагаемого устройства , на фиг. г - диаграммы напр )кений и токов в характерных точках Ьхемы.FIG. 1 is a schematic electrical diagram of the proposed device; FIG. (d) diagrams of eg Kenya and currents at characteristic points of the circuit.

Claims

The capacitor battery 1 through the valves 2 of the rectifying bridge and the additional taps. J is discharged on section 4 of the electromagnet. In this case, the throttle 5 is magnetized to saturation. When the re energy from the capacitor bank turns into an electromagnet, the voltage across the capacitor battery begins to increase again, but with reverse polarity. This voltage is applied through the rectifying bridge valves 6 and the additional valves 7, 8 to the windings of the throttles 5, which are re-magnetized to another side. After the throttle 5 is saturation, the currents through the gates 6,7,8 increase sharply, the gates 2 are under the oncoming voltage of the capacitor bank and are locked. The sections 4 of the electromagnet through the valves 6,7,8 discharged to the capacitor battery in parallel. In this case, the current through the capacitor changes direction, and the battery is charged with the original polarity of the voltage. Since the switching of the sections of the electromagnet from the series from the parallel to the parallel, the intrinsic frequency of the circuit increases, the duration of the decrease of the magnetic field is shorter for its growth. FIG. 2 shows the voltage diagrams Uc on the capacitor bank 1, the current 1 of the electromagnet and the current ip through the capacitor L For successful operation of the device it is necessary that the time tj, during which the valves 2, 3 are under counter voltage, is sufficient for restoration of their valve properties. For thyristors, this time is several tens of microseconds. Since this time is much shorter than the discharge time of the capacitor battery, the magnitude of the reverse voltage across the capacitor battery is a small fraction of the forward voltage. The invention The device for feeding an electromagnet of an accelerator of charged particles containing a valve bridge, to the diagonal of a constant voltage of which a series-divided winding is connected, and a capacitor connected to the diagonal of an alternating voltage of the bridge, in order to increase the efficiency of the device and the average intensity accelerated particles, sections of the electromagnet windings are connected in series through controlled valves, the ends of the first and intermediate sections are connected with Uncontrolled valves to the positive terminal, and the beginning of the first and intermediate sections, respectively, through another group of valves - to the negative terminal of the capacitor.

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FIG. 2