Energy-adjustable electronic linear accelerator

A linear accelerator and electron technology, applied in the field of high-energy physics, can solve the problems of difficult design and manufacture, the influence of electric field in the focusing section, and the low beam.

Inactive Publication Date: 2003-11-12
NANJING UNIV
View PDF1 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But these technologies also have some deficiencies: 1. The "switching" technology is mainly used to obtain two-photon ray beams, and other energy blocks must be adjusted with traditional technologies on this basis, and the treatment energy optimized by the specific energy spectrum cannot be obtained. Lower optimized beam
2. The action of the modulation mechanism will still have some influence on the electric field of the bunching section that is not expected to be changed
3. They are more difficult to design and manufacture
4. On the high-energy medical electron linear accelerator, the power source generally adopts a microwave klystron of about 5 MW in the S-band. Circulators subject to peak power greater than 5 megawatts as isolation devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Energy-adjustable electronic linear accelerator
  • Energy-adjustable electronic linear accelerator
  • Energy-adjustable electronic linear accelerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] see first figure 1 , which is a typical embodiment of the electron linear accelerator composed of the aforementioned existing energy modulation technology. It consists of a double-period standing wave structure accelerating tube [5], an energy modulation device on the coupling cavity [6], a microwave input port [4], a microwave circulator [3], a feed waveguide [2], and a high-power microwave speed regulator. Tube [1] and so on. The working process of this electron linear accelerator is: the microwave power output by the high-power microwave klystron [1] enters the microwave input port [4] through the feeding waveguide [2] and the microwave circulator [3], and the microwave power is in the accelerating tube [ 5] to establish an electric field and accelerate the injected electrons. In the acceleration section after the coupling cavity with the energy modulation device [6], the electric field can be changed by changing the parameters of the adjustable coupling cavity by t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Disclosed is an adjustable-energy electron accelerator. Its electron accelerating pipe comprises the traveling wave accelerating section [6], the second travelling wave or standing wave accelerating section [5] and the microwave binding-flow hole [7]. The traveling wave accelerating section [6] is ahead, which follow the Standing wave accelerating section [5], the microwave power first feed in the traveling wave accelerating section [6], and is connected with the entry of the standing wave accelerating section [5]. The electron beam firstly enter the micro binding-flow hole via the traveling wave accelerating section, then enter the second traveling wave or standing wave accelerating section [5]. The present invention can decelerate the electron beam in the accelerating structure.

Description

1. Field of invention: [0001] The invention relates to an energy-adjustable electron linear accelerator, which belongs to the technical field of high-energy physics. 2. Background technology: [0002] When using electron linear accelerators to treat cancer and other diseases, it is necessary to use beams of different energies for treatment according to different cases. A ray beam of about 6 MeV is used at a low level, and a ray beam of about 20 MeV is used at a high level, and some ray beam energy levels between the above-mentioned energies are also set between this. Among the medical electron linear accelerators, the ones with the highest output beam energy up to about 20 MeV are called high-energy machines, and the rest are medium and low-energy machines. The high-energy medical electron linear accelerator has the most uses and the highest technical content. It has multiple electron beams, which can be used for multiple purposes. It can also generate X-ray beams with a la...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10H05H9/00
Inventor 赵明华
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap