SU409659A1 - Linear charged particle accelerator with microwave grouper - Google Patents

Description

one

The invention relates to accelerator technology, in particular to linear accelerators of charged particles.

In known dehydration devices, separate powering of the grouper and accelerating sections is provided through the respective communication nodes.

Such a power circuit includes a microwave power coupler, phase shifters, attenuators, matching elements and the C-HF path itself. The matching element between the transmitting path and the buncher, for example, a wave type transformer, significantly affects the dynamics of particles in the accelerator, since it is located at the entrance to the buncher, where the energy of the accelerated particles is small.

The purpose of the invention is to simplify the construction, facilitate the phasing of the accelerator and the cargo booster and reduce the influence of the matching element of the grouper on the particle dynamics.

This is achieved by introducing into the microwave power circuit the accelerator of a shticolpole transformer of the wave type, which performs direct input of power to the buncher and accelerating section and serves as a microwave power divider. Since the transformer is installed after the grouper, its effect on the dynamics of charged particles

less so as the energy of the particles increases after the passage of the grouper. Phasing slowdown systems powered

through one matching element, it is not difficult, since the span angle of the transformer is easy to take into account and it changes slightly with frequency. All this allows in most cases to do without phase shifters.

FIG. 1 shows an accelerator, the grouper of which can be made in the form of a resonator, an autoelectronic injector, a chain connected by a resonator, a grouper on the 1st harmonic, etc., i.e., in the form of a grouper, which allows the introduction of microwave power towards the movement of accelerated particles; in fig. 2 - one of the variants of a shtichipolar transformer

the waves.

The microwave generator 1 through the transmitting microwave contract 2 is connected to the transformer 3 of a wave type, which is installed between the grouper 4 and the accelerating section 5, the injector

6 charged particles directly with the buncher. The geometric dimensions of the transformer are chosen from the conditions of matching of the transmitting path and delay systems, dimensions 2a and 2a, which determine the magnitude of the connection with the delay structures.

provide the necessary ratio, the division of microwave power.

The charged particles, the exit from the injector, are dropped into the grouper, where the preliminary grouping and acceleration are due to interaction with the grouping field. Final grouping and acceleration are carried out in the acceleration section. The microwave power to the accelerating section and the grouper is provided through a transformer, which simultaneously serves as a power divider supplied to it via the transmitting path from the generator.

Subject invention

Linear charged particle accelerator with microwave buncher, containing a charged particle injector, a buncher that allows the introduction of microwave power in opposition to the movement of accelerated particles, accelerating section, high frequency path, generator, wave type transformer, characterized in that In order to simplify the construction, the wave type transformer is designed as a microwave power divider and is placed directly between the blender and the accelerating section.

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