RU2564090C2 - Device for output of accelerated electrons from autoresonant accelerator - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: device for output of accelerated electrons from autoresonant accelerator represents a tubular magnetic shunt of soft steel. By its input end the magnetic shunt is oriented towards accelerated electrons in autoresonant accelerator. Path of electrons in autoresonant accelerator is presented as unwinding conical helix. The autoresonant accelerator is a waveguide with electromagnetic wave of shear-wave pattern, which is placed in a solenoid. By its input end the tubular magnetic shunt is mounted hermetically into non-magnetic spherical hinge, which case is connected monolithically with the accelerating close to its output from solenoid; the spherical hinge is mounted in sealed but movable way in a case of the non-magnetic spherical hinge.

EFFECT: improved operational reliability and reduction of weight and dimensions.

2 dwg

Description

The present invention relates to accelerator technology and is intended to output accelerated electrons with an energy of the order of 1-5 MeV to a target or collector.

The aim of the invention is the creation of a small-sized device from a steel tube for extracting relativistic electrons from an accelerating waveguide located in the solenoid and efficiently transporting them to the target.

An analogue of the invention is a device for outputting accelerated electrons from a microtron. It is a magnetic shunt in the form of a tube of mild steel, which is located in the plane of the orbits of accelerated electrons. The input end of the tube is directed towards the electrons that need to be displayed on the target. The target itself is located at the output end of the tube.

The analogue operates as follows. A mild steel tube placed in the plane of the microtron’s orbits does not disturb the structure of a uniform magnetic field, because the magnetic field lines are closed through the tube body. In this case, the space inside the tube remains free from the magnetic field line. Due to this, the electrons trapped in such a magnetic shunt continue to move freely in a straight line, and to remove the electrons from the accelerator, it remains to direct the magnetic shunt along these rectilinear trajectories. See Kapitsa S.P., Melekhin V.Ch. "Microtron". The science. M., p. 123, 1969.

The disadvantage of the analogue is that it cannot be directly used to remove accelerated electrons from an autoresonant accelerator. The analog is oriented in the plane, along one corner. When outputting from an autoresonant accelerator, it is necessary to orient the magnetic shunt in space, i.e. at two angles, in solid angle.

The prototype of the invention is a device for outputting accelerated electrons from an autoresonant accelerator, which is structurally a magnetic shunt of tubular type made of mild steel. This shunt input end mounted in a gimbal and oriented towards accelerated electrons. For sealing, the gimbal assembly is located inside the bellows. Previously, before mounting the gimbal, the place of precipitation of accelerated electrons on the wall of the accelerating waveguide was determined. For this, a phosphor was sprayed outside the proposed site of accelerated electron precipitation and the desired location was determined by the brightness of its glow. At this place, a hole was made in the wall of the waveguide and a gimbal was attached to the suspension.

The prototype operates as follows. The magnetic shunt is oriented by the input end towards the accelerated electrons so that they freely fly through the shunt to the target. In this case, the spatial position of the shunt is fixed with a special hinged lock. See Ishkov A.P. PhD thesis "An experimental study of an autoresonant electron accelerator." SINPI TPI, Tomsk, p. 42-43, photo 5, 6, 1969.

The disadvantage of the prototype is the substantial radial dimensions of the gimbal suspension at the end of the magnetic shunt, which still needs to be placed in a bellows for sealing. All this makes the accelerated electron output device cumbersome and not sufficiently operational in tuning when changing the accelerator operation mode.

As an example, the invention is presented in the drawings. In FIG. 1 shows the placement of the device on an autoresonant accelerator. In FIG. 2 shows a device in section. The positions in the drawings indicate:

1 - accelerating waveguide,

2 - external magnetic circuit of the solenoid,

3 - solenoid winding,

4 - tubular magnetic shunt,

5 - hinge assembly

6 - non-magnetic spherical joint,

7 - hinge unit housing,

8 - elastic sealing gasket,

9 - sealing flange,

10 - inlet,

11 - trajectory of accelerated electrons,

12 - target / collector /.

The output site of accelerated electrons is determined by the technology of the prototype. It should be at the exit of the accelerating waveguide 1 from the external magnetic circuit of the solenoid 2, which covers the winding of the solenoid 3. At the selected location / this is the place of the most energetic electrons / a hole is drilled in the waveguide 1 under the body of the hinge assembly 7. After soldering, the hinge assembly 5 is mounted and all the rest of the device is known technology.

The invention operates as follows.

In the mode of acceleration of a weak electron beam with a weakened tightening of the elastic strip 8 with a sealing flange 9, the tubular magnetic shunt 4 is guided by the inlet 10 and will meet the paths of the accelerated electrons 11 until they appear on the target / collector / 12. After determining the optimal position of the tubular magnetic shunt 4, it is rigidly fixed by the flange sealing 9. After that, the operation of the device continues according to the specified program.

The advantage of the invention is its small size, compactness and reliability. Inside the accelerating waveguide 1, a non-magnetic spherical hinge 6 enters to the depth of its radius with a polished surface. This will ensure the stable operation of waveguide 1 without breakdowns and sparks. The small radial size of the device will "climb" into the region of the most accelerated electrons.

The manufacturing technology of the device does not require special technological equipment.

According to its technical characteristics, the device is quite applicable as an injector in the mode of angular injection into an autoresonant accelerator.

Claims (1)

A device for outputting accelerated electrons from an autoresonant accelerator, consisting of a tubular magnetic shunt, characterized in that the tubular magnetic shunt with the input end is hermetically mounted in a non-magnetic spherical hinge, the body of which is monolithically connected to the accelerating waveguide at its exit from the solenoid, the spherical hinge itself is hermetically movable mounted in the body of a non-magnetic spherical joint.

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