De-dispersion deflection device for high-energy electron beam

Abstract

The invention belongs to the field of high-energy physical technologies, and particularly relates to a de-dispersion deflection device for a high-energy electron beam. The technical scheme includes that the de-dispersion deflection device for the high-energy electron beam comprises a vacuum box, a magnetic component, a coil, an input flange, a straight beam output window, a bending beam output window and a magnetic block blocking component. An electron beam enters to the inner portion of the vacuum box in the 20-degree horizontal included angle direction from left to right and the electron beam after being dispersed by the magnet A enters a magnet B, second-time deflection and dispersion are carried out under the action of magnetic fields, the direction of a magnetic field of the magnet B is just opposite to the direction of a magnetic field of a magnet A14, and therefore the electron beam after being diffused by the magnet A begins to gather in the magnet B and then enters a magnet C, under the action of a magnetic field of the magnet C, the electron beam deflects and gathers and then shoots out downwards, and 110-degree deflection is achieved. The de-dispersion deflection device for the high-energy electron beam enables the electron after being deflected to be less in divergence degree, using requirement of an electron acceleration scheduler is satisfied, meanwhile, total height of the electron acceleration scheduler is satisfied, and therefore effective using and operating space is effectively increased.

Description

technical field [0001] The invention belongs to the technical field of high-energy physics, and in particular relates to an electron beam dedispersion deflection device. Background technique [0002] In medium-to-high-energy electron linear accelerators, especially medium-to-high-energy medical linear accelerators, due to the long length of the accelerator tube, they are generally arranged horizontally or inclined at a certain angle from the horizontal, so the exit direction of the electron beam is also horizontal or corresponding to the horizontal inclination. Angle, since the electron beam needs to be emitted vertically downward when the accelerator is in use, a high-energy electron beam deflection device must be used to deflect the electron beam. [0003] Since the energy spectrum of the electron beam in the accelerator has a certain width, as shown in the attached figure 1 Shown: If a simple electromagnet is used for deflection, the electron beams of different energies ...

AI Technical Summary

Problems solved by technology

[0004] In most of the current accelerators, the 270° achromatic deflection system is generally used, which can meet the requirements of use. However, in medical linear accelerators, the 270° achromatic deflection system has a higher height and a larger volume, and the equipment treats patients normally. The distance is certain. In order to ensure the space for patients to be treated, the volume requirements of the accelerator treatment head are very strict.

Images