CN111292866A - A heavy ion production device for industrial production of nuclear pore membranes - Google Patents

Abstract

The invention relates to a heavy ion production device for the industrial production of nuclear pore membranes, comprising an ion source, a LEBT beamline, a particle accelerator, an HEBT beamline and a membrane irradiation terminal; the ion source is used to generate a high-charge state heavy ion beam and The primary acceleration of the heavy ion beam; the LEBT beamline is used to analyze and match the heavy ion beam to the particle accelerator; the particle accelerator mainly accelerates the heavy ion beam, and then injects it into the HEBT beamline; the HEBT beamline will The implanted heavy ion beam is split into several heavy ion beams and then transmitted to several membrane irradiation terminals. The membrane irradiation terminal draws out the heavy ion beams and irradiates the thin film placed in the atmospheric environment. Because the invention can place the film in the atmospheric environment for irradiation, the replacement of the film is convenient and fast, and the time for replacing the film is greatly reduced, and at the same time, multiple terminals can irradiate the film at the same time, which greatly improves the irradiation efficiency of the film. , thereby improving the production efficiency of nuclear pore membranes.

Description

A heavy ion production device for industrial production of nuclear pore membranes

technical field

The invention relates to a heavy ion production device, in particular to a heavy ion production device for industrial production of nuclear pore membranes, and belongs to the technical field of nuclear pore membrane production.

Background technique

Heavy ion nuclear pore membrane has an irreplaceable and excellent role in water treatment, air filtration and clean energy (such as lithium ion battery separator), and has a unique role in new special functional materials, which is expected to be used in civil and military new materials. There are many breakthroughs.

At present, the existing special equipment for nuclear pore film irradiation in the world can provide a heavy ion mononuclear energy of about 3MeV/u. The film to be irradiated can only be placed in a vacuum state, and only one irradiation terminal works at the same time period. The irradiation efficiency of the thin film is not high, resulting in a low production efficiency of nuclear pore membranes.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide a heavy ion production device for the industrial production of nuclear pore membranes.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a heavy ion production device for industrial production of nuclear pore membranes, comprising an ion source, a LEBT beamline, a particle accelerator, an HEBT beamline and a membrane irradiation terminal; The LEBT beam line is arranged between the outlet of the ion source and the inlet of the particle accelerator for generating a high-charge state heavy ion beam and performing primary acceleration of the heavy ion beam; The generated heavy ion beam is analyzed to select suitable heavy ions for acceleration according to the requirements of different types of nuclear pore membranes, and then matched and transmitted to the particle accelerator; the particle accelerator mainly accelerates the heavy ion beam, and then injects it into the particle accelerator. The HEBT beam line; the HEBT beam line splits the implanted heavy ion beam into several heavy ion beams and then transmits them to several membrane irradiation terminals respectively, and the membrane irradiation terminals draw out the heavy ion beams and place them. Irradiate thin films in atmospheric environment.

In the heavy ion production device, preferably, the LEBT beam line includes: a first solenoid magnetic lens, used for focusing or defocusing the extracted heavy ion beam; a bidirectional correction magnet, used for adjusting The heavy ion beam is centered; the analysis dipole magnet is used to analyze the heavy ion species and select suitable heavy ions for acceleration; the first combination of quadrupole magnets is used to focus or defocus the selected heavy ion beam ; Bidirectional deflection dipole magnet for deflecting the direction of the heavy ion beam; a second combined quadrupole magnet and a second solenoid magnetic lens for focusing or defocusing the heavy ion beam.

In the heavy ion production device, preferably, the HEBT beam line includes: beam splitting devices arranged in sequence, and at least one of the beam splitting devices is placed in sequence along the transmission direction of the HEBT beam line for the particles to be separated. A beam of heavy ion beams drawn from the accelerator is split to split into several heavy ion beams; a deflection dipole magnet is used to deflect the direction of the heavy ion beams for transmission to the film irradiation terminal; a focusing quadrupole magnet is used It is used to focus or defocus the extracted heavy ion beam; the horizontal scanning magnet and the vertical scanning magnet are used to make the beam spot of the heavy ion beam uniform.

In the heavy ion production device, preferably, the LEBT beam line is connected to a plurality of the ion sources at the same time, and the plurality of the ion sources operate alternately within a very short time interval.

In the heavy ion production device, preferably, the ion source is a superconducting ion source and/or an ECR ion source.

In the heavy ion production device, preferably, the average beam current intensity of the highly charged heavy ions generated by the ion source is in the order of hundreds of microamps.

In the heavy ion production device, preferably, the particle accelerator can accelerate the heavy ion beam to a single nuclear energy of about 5 MeV/u to 20 MeV/u.

In the heavy ion production device, preferably, the particle accelerator is a superconducting cyclotron.

The present invention has the following advantages due to the adoption of the above technical solutions: 1. The present invention adopts an ion source to provide high-charge state heavy ions, and accelerates the high-charge state heavy ions to a mononuclear energy of about 5MeV/u to 20MeV/ by a particle accelerator. u, so that the heavy ions have the ability to pass through the vacuum film window, and there is enough penetration distance in the atmospheric environment, so the film can be placed in the atmospheric environment for irradiation, which makes the replacement of the film convenient and fast, and greatly reduces the replacement of the film. At the same time, multiple irradiation terminals can simultaneously irradiate the film, which greatly improves the irradiation efficiency of the film and improves the production efficiency of the nuclear pore membrane. 2. The present invention adopts the method of high-charged heavy ions, which can reduce the volume and weight of the particle accelerator and reduce the construction cost.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

FIG. 2 is a schematic diagram of a partial structure of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solutions of the present invention.

As shown in FIG. 1 and FIG. 2 , the heavy ion production device for industrial production of nuclear pore membranes provided by the present invention includes an ion source, a LEBT beamline 1 , a particle accelerator 2 , an HEBT beamline 3 and a membrane irradiation terminal 4 . Among them, the ion source is used to generate a beam of heavy ions (such as argon ions or krypton ions, etc.) with a high charge state and perform primary acceleration of the heavy ion beam. The LEBT beam line 1 is set between the outlet of the ion source and the inlet of the particle accelerator 2, and is used to analyze the heavy ion beam generated by the ion source, so as to select suitable heavy ions for acceleration according to the requirements of different types of nuclear pore membranes, and then Matching transmission to particle accelerator 2. The particle accelerator 2 mainly accelerates the heavy ion beam and injects it into the HEBT beamline 3 . The HEBT beam line 3 splits the implanted heavy ion beam into several heavy ion beams and then transmits them to several membrane irradiation terminals 4 respectively. irradiate.

In the above example, preferably, the LEBT beam line 1 includes sequentially arranged: a first solenoid magnetic lens 11 for focusing or defocusing the extracted heavy ion beam; a bidirectional correcting magnet 12 for adjusting the heavy ions The beam is brought to the center position; the analysis dipole magnet 13 is used to analyze the heavy ion species and select suitable heavy ions for acceleration; the first combined quadrupole magnet 14 is used to focus or defocus the selected heavy ion beam ; Bidirectional deflection dipole magnet 15 for deflecting the direction of the heavy ion beam; the second combined quadrupole magnet 16 and the second solenoid magnetic lens 17 for focusing or defocusing the heavy ion beam.

In the above example, preferably, the HEBT beamline 3 includes a beam splitting device 31 arranged in sequence, and at least one beam splitting device 31 is placed in sequence along the transmission direction of the HEBT beamline 3 , and is used for reproducing a beam drawn from the particle accelerator 2 . The ion beam is split to split into several heavy ion beams; the deflection dipole magnet 32 is used to deflect the direction of the heavy ion beam for transmission to the film irradiation terminal 4; the focusing quadrupole magnet 33 is used to extract heavy ions The beam is focused or defocused; the horizontal scanning magnet 34 and the vertical scanning magnet 35 are used to make the beam spot of the heavy ion beam uniform.

In the above example, preferably, the LEBT beamline 1 can be connected with several ion sources at the same time, and the several ion sources can be operated alternately within a very short time interval, thereby improving the operating efficiency of the particle accelerator 2 .

In the above examples, preferably, the ion source is a superconducting ion source and/or an ECR ion source.

In the above example, preferably, the average beam current intensity of the highly charged heavy ions generated by the ion source is in the order of hundreds of microamps.

In the above example, preferably, the particle accelerator 2 can accelerate the heavy ion beam to a single nuclear energy of about 5 MeV/u to 20 MeV/u, so that the extracted heavy ions have the ability to pass through the vacuum membrane window of the membrane irradiation terminal 4 , and has a sufficient penetration distance in the atmospheric environment.

In the above example, preferably, the particle accelerator 2 is a superconducting cyclotron.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A heavy ion production device for the industrial production of nuclear pore membranes is characterized by comprising an ion source, an LEBT beam line (1), a particle accelerator (2), an HEBT beam line (3) and a membrane irradiation terminal (4);

the ion source is used for generating heavy ion beams with high charge states and carrying out primary acceleration on the heavy ion beams;

the LEBT beam line (1) is arranged between an outlet of the ion source and an inlet of the particle accelerator (2) and is used for analyzing a heavy ion beam current generated by the ion source, selecting heavy ions suitable for acceleration according to requirements of different types of nuclear pore membranes, pre-accelerating the selected heavy ion beam current and then matching and transmitting the heavy ion beam current to the particle accelerator (2);

the particle accelerator (2) carries out main acceleration on the heavy ion beam again, and then injects the heavy ion beam into the HEBT beam line (3);

the HEBT beam line (3) splits the injected heavy ion beam into a plurality of strands of heavy ion beams and then transmits the heavy ion beams to a plurality of film irradiation terminals (4), and the film irradiation terminals (4) lead out the heavy ion beams and irradiate the film placed in the atmospheric environment.

2. A heavy ion production apparatus according to claim 1, wherein the LEBT beam line (1) comprises, in order:

a first solenoidal magnetic lens (11) for focusing or defocusing the extracted heavy ion beam;

a bidirectional correction magnet (12) for adjusting the heavy ion beam current to a central position;

an analyzing dipole magnet (13) for analyzing heavy ion species and selecting heavy ions suitable for acceleration;

a first combined quadrupole magnet (14) for focusing or defocusing a selected heavy ion beam current;

a bidirectional deflection dipole magnet (15) for deflecting the direction of the heavy ion beam;

a second combined quadrupole magnet (16) and a second solenoidal magnetic lens (17) for focusing or defocusing the heavy ion beam.

3. A heavy ion production apparatus according to claim 1, wherein the HEBT beam line (3) comprises, in order:

the beam splitting device (31), at least one beam splitting device (31) is sequentially arranged along the transmission direction of the HEBT beam line (3), and is used for splitting a heavy ion beam current led out by the particle accelerator (2) into a plurality of heavy ion beams;

a deflecting dipole magnet (32) for deflecting the direction of the heavy ion beam current for transmission to the film irradiation terminal (4);

a focusing quadrupole magnet (33) for focusing or defocusing the extracted heavy ion beam;

a horizontal scanning magnet (34) and a vertical scanning magnet (35) for making the beam spot of the heavy ion beam uniform.

4. The heavy ion production apparatus according to claim 1, wherein the LEBT beam line (1) is simultaneously connected to several of the ion sources, and several of the ion sources are operated alternately in very short time intervals.

5. The heavy ion production apparatus of claim 1, wherein the ion source is a superconducting ion source and/or an ECR ion source.

6. The heavy ion production apparatus of claim 1, wherein the ion source produces heavy ions of high charge state with an average beam current intensity on the order of hundreds of microamps.

7. The heavy ion production apparatus of claim 1, wherein the particle accelerator (2) is capable of accelerating a heavy ion beam to a single nuclear energy of about 5 to 20 MeV/u.

8. Heavy ion production plant according to claim 7, characterized in that said particle accelerator (2) is a superconducting cyclotron.

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