A neutron generator for neutron capture therapy

A kind of neutron generator and neutron technology, applied in the direction of nuclear reaction target, DC voltage accelerator, accelerator, etc., can solve the problems of small output, large volume and complex structure of neutron generator, and achieve the goal of working Long life, high power capacity, and the effect of increasing the probability of collision

Active Publication Date: 2018-08-28
四川瑶天纳米科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of the existing deuterium-deuterium neutron generators with la...

Method used

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  • A neutron generator for neutron capture therapy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A neutron generator used in neutron capture therapy, such as figure 1 As shown, it includes a vacuum chamber, a vacuum pumping system disposed on the vacuum chamber, a target system disposed in the vacuum chamber, and an ion source system that guides ions to the target system.

[0043] Wherein, the ion source system includes a discharge chamber 9 arranged in the vacuum chamber, and an extraction electrode 10 arranged on the discharge chamber 9; the number of the extraction electrodes 10 is multiple, and is evenly distributed on the side wall of the discharge chamber 9, That is, the extraction electrodes 10 are evenly distributed on the side wall of the discharge chamber 9 at 360 degrees, such as figure 1 As shown; the target system includes a target 11 located in the vacuum chamber and arranged around the discharge chamber 9, and a negative high voltage power supply 13 connected to the target 11.

[0044] Step 1. Carry out vacuuming operation through the vacuuming syst...

Embodiment 2

[0047] The difference between this embodiment and Embodiment 1 is that this embodiment optimizes the structure of the target system and the ion source system, and the specific settings are as follows:

[0048] The ion source system also includes a microwave generator 1, one end is connected to the microwave generator 1, and the other end extends to a waveguide 4 in the discharge chamber 9, a microwave tuner 3 arranged on the waveguide 4, and a circulator connected to the waveguide 4 2. The deuterium cylinder 7 communicated with the discharge chamber 9 through the connecting pipe, the ceramic insulator 8 arranged on the vacuum chamber or outside the vacuum chamber, and the permanent magnet arranged outside the vacuum chamber and used to generate a magnetic field acting on the discharge chamber 9 12.

[0049] In this embodiment, both the target 11 and the ceramic insulator 8 are arranged in a cylindrical structure, the target 11 is located inside the ceramic insulator 8 of the c...

Embodiment 3

[0061] The difference between this embodiment and Embodiment 2 is that a low potential circulating water device 5 and a high potential circulating water device 16 are added in this embodiment, such as figure 1 As shown, the specific settings are as follows:

[0062] The ion source system is also provided with a low-potential circulating water device 5, the water outlet of the low-potential circulating water device 5 is connected to the water inlet of the discharge chamber 9 through a water pipe, and the water outlet of the discharge chamber 9 is connected to the microwave generator 1 through a water pipe. The water inlet is connected, the water outlet of the microwave generator 1 is connected with the water inlet of the circulator 2 through the water pipe, and the water outlet of the circulator 2 is connected with the water inlet of the low potential circulating water device 5 through the water pipe.

[0063] The target system also includes a high-potential circulating water d...

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Abstract

The invention discloses a neutron generator for a neutron capture therapy and solves the problems of the conventional deuterium-tritium neutron generator of large size, complex structure and small yield. The neutron generator for the neutron capture therapy comprises a vacuum cavity, a vacuum pumping system arranged on the vacuum cavity, a target system arranged in the vacuum cavity and an ion source system which produces deuterium ions and leads the deuterium ions to the target system, wherein the ion source system comprises a discharge chamber (9) arranged in the vacuum cavity and extraction electrodes (10) arranged on the discharge chamber (9); multiple extraction electrodes (10) are uniformly distributed on the side wall on the periphery of the discharge chamber (9); the target system comprises targets (11) which are located in the vacuum cavity and arranged on the side wall surrounding the periphery of the discharge chamber (9) and a negative high-voltage power supply (13) connected with the targets (11). According to the invention, the yield of deuterium-tritium neutrons can reach 10<12>n/s, and research requirements of the neutron capture therapy for tumors can be met, furthermore, the neutron generator for the neutron capture therapy has the advantages of small size, long service life and the like.

Description

technical field [0001] The invention relates to a neutron generator, in particular to a neutron generator for neutron capture therapy. Background technique [0002] The basic principle of boron neutron capture therapy for tumors first proposed by American biophysicist G. L. Locher in 1936 is to selectively concentrate boron in a certain tumor and then irradiate it with thermal neutrons to effectively kill tumors. destroy tumor cells. Despite decades of research, neutron capture therapy for tumors has not been put into clinical application, and one of the biggest bottlenecks restricting its development is the neutron source. The sources of neutrons are obtained through nuclear reactors, neutron generators, electrostatic accelerators, cyclotrons, etc. However, in the prior art, the reactor neutron source may cause environmental pollution, and radiation protection is also very difficult; the neutron source formed by the electrostatic accelerator, cyclotron, etc. has the probl...

Claims

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Application Information

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IPC IPC(8): H05H3/06H05H6/00
CPCH05H3/06H05H6/00
Inventor 周烨
Owner 四川瑶天纳米科技有限责任公司
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