CN214851956U - A self-heating emission type hybrid cathode ion source device - Google Patents
A self-heating emission type hybrid cathode ion source device Download PDFInfo
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- CN214851956U CN214851956U CN202121117490.5U CN202121117490U CN214851956U CN 214851956 U CN214851956 U CN 214851956U CN 202121117490 U CN202121117490 U CN 202121117490U CN 214851956 U CN214851956 U CN 214851956U
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Abstract
本实用新型公开了一种自加热发射型混合阴极离子源装置，涉及加速器技术领域。包括主阴极、次阴极和阳极，所述主阴极与所述次阴极通过次阴极柱连接，所述阳极包括主桶，所述主桶内壁设有支撑台，所述主阴极与所述支撑台通过主阴极陶瓷绝缘座连接，所述次阴极与所述主桶通过次阴极陶瓷绝缘座连接，所述主阴极陶瓷绝缘座上设有进气管道。本实用新型提供的自加热发射型混合阴极离子源装置，利用次阴极柱实现主阴极和次阴极之间的电连接，从而实现主阴极和次阴极的自加热，延长了主阴极和次阴极使用寿命，提高了装置的运行效率。
The utility model discloses a self-heating emission type mixed cathode ion source device, which relates to the technical field of accelerators. It includes a main cathode, a sub-cathode and an anode, the main cathode and the sub-cathode are connected through a sub-cathode column, the anode includes a main barrel, a support table is arranged on the inner wall of the main barrel, and the main cathode and the support table are The main cathode ceramic insulating seat is connected, and the secondary cathode is connected to the main barrel through the secondary cathode ceramic insulating seat, and an air inlet pipe is arranged on the main cathode ceramic insulating seat. The self-heating emission type mixed cathode ion source device provided by the utility model utilizes the sub-cathode column to realize the electrical connection between the main cathode and the sub-cathode, so as to realize the self-heating of the main cathode and the sub-cathode, and prolong the use of the main cathode and the sub-cathode. life and improve the operating efficiency of the device.
Description
Technical Field
The utility model belongs to the technical field of the accelerator, concretely relates to from heating transmission type mixed cathode ion source device.
Background
The cyclotron has wide application in the field of nuclear technology application, in particular to the fields of radioisotope pharmacy, cancer and tumor treatment and the like. The cyclotron has the characteristics of small occupied space, convenience in installation and maintenance and the like, different particles can be accelerated to the energy of dozens of megaelectron volts by utilizing the cyclotron, and the economical efficiency and the practicability of the cyclotron are greatly improved in the field of nuclear technology application.
The ion source device is the most central component of the cyclotron and is a source of ions of the cyclotron, and various accelerated ions can be provided for the cyclotron. The ion sources have various types, different types of ion sources can be used on the same type of cyclotron device, and different types of ion sources are installed according to different use requirements and indexes. The cathode ion source is the most widely used ion source, and the technology is mature, and the installation and maintenance are convenient. The cathode ion source device used by the cyclotron in the prior art has the following problems: the cathode is heated continuously, the service life is limited, and the cathode is replaced frequently when needed; the difference between the discharge promoting potentials of the main cathode and the secondary cathode is very large, and short circuit and unstable discharge between the main cathode and the anode and between the secondary cathode and the anode are easily caused. In order to solve the above problems, a self-heating emission type mixed cathode ion source apparatus is now designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses following technical scheme has been taken:
the utility model provides a mixed cathode ion source device of self-heating transmission type, includes main negative pole, secondary cathode and positive pole, main negative pole with secondary cathode passes through secondary cathode column and connects, the positive pole includes main bucket, main bucket inner wall is equipped with a supporting bench, main negative pole with a supporting bench passes through main cathode ceramic insulator and connects, secondary cathode with main bucket passes through secondary cathode ceramic insulator and connects, it has the admission line to alternate on the main cathode ceramic insulator.
Further, the main cathode comprises a main cathode body and a main cathode seat, the main cathode seat is of a cylindrical concave hole structure, the main cathode body is of a cylindrical boss structure, and a boss of the main cathode body is matched with the concave hole of the main cathode seat.
Furthermore, a main cathode cooling water pipeline and a secondary cathode column channel are arranged on the main cathode seat.
Further, the shrinkage pool inside wall of main negative pole seat is equipped with the internal thread, the boss lateral wall of main negative pole body be equipped with interior screw-thread fit's external screw thread.
Furthermore, the main cathode ceramic insulating base is of a hollow structure, three bolt through holes are uniformly distributed on the end face of the main cathode ceramic insulating base, and the main cathode ceramic insulating base is connected with the supporting platform through bolts.
Further, the inner diameter of the main cathode ceramic insulating seat is matched with the outer diameter of the main cathode seat.
Furthermore, the secondary cathode ceramic insulating seat is of a hollow structure, the outer diameter of the secondary cathode ceramic insulating seat is matched with the inner diameter of the main barrel, and the inner diameter of the secondary cathode ceramic insulating seat is matched with the outer diameter of the secondary cathode.
Furthermore, a mounting hole is formed in one end face of the secondary cathode, one end of the secondary cathode column is connected with the mounting hole, and the other end of the secondary cathode column enters from the secondary cathode column channel and is connected with the main cathode base.
Further, the main barrel and the support platform are of an integrally formed structure.
Compared with the prior art, the utility model discloses following beneficial effect has:
after cutting off heating power supply output current, utilize the electricity of inferior negative pole post to realize the main negative pole and be connected with the time between the negative pole, can keep main negative pole and time negative pole continuous operation to discharge, need not to last the heating, and set up main cathode cooling water pipeline and can cool off the whole of main negative pole and time negative pole, finally prolonged the life of main negative pole and time negative pole, reduced the promotion discharge potential difference between main negative pole and time negative pole and the positive pole, reduced the risk that takes place the short circuit, realized stably discharging.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of the main cathode ceramic insulating base of the present invention.
The device comprises a primary cathode column, a secondary cathode column, a primary barrel, a support platform, a primary cathode body, a primary cathode seat, a primary cathode barrel, a primary barrel, a secondary barrel, a primary cathode ceramic insulating seat, a primary cathode body, a primary cathode seat, a primary cathode ceramic insulating seat, a primary cathode cooling water pipeline, a secondary cathode inlet pipeline, a secondary cathode column channel, a bolt hole 11, a secondary cathode column channel hole 12 and an air inlet hole 13.
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
Combine fig. 1 to fig. 2 to provide a mixed cathode ion source device of self-heating emission type, including main cathode, secondary cathode 2 and positive pole 3, main cathode with secondary cathode 2 passes through secondary cathode post 1 and connects, positive pole 3 includes main bucket 31, the inner wall of main bucket 31 is equipped with brace table 32, main cathode with brace table 32 passes through main cathode ceramic insulator 7 and connects, secondary cathode 2 with main bucket 31 passes through secondary cathode ceramic insulator 4 and connects, it has inlet duct 9 to alternate on the main cathode ceramic insulator 7, and gaseous entering device is through inlet duct 9.
Further, main negative pole includes main negative pole body 5 and main negative pole seat 6, and main negative pole seat 6 is cylinder shrinkage pool structure, and main negative pole body 5 is cylinder boss structure, and the boss of main negative pole body 5 cooperatees with the shrinkage pool of main negative pole seat 6. The shrinkage pool inside wall of main negative pole seat 6 is equipped with the internal thread, and the boss lateral wall of main negative pole body 5 is equipped with the external screw thread with interior screw-thread fit, and both pass through threaded connection, and the installation is dismantled conveniently. Be equipped with main cathode cooling water pipe line 8 and secondary cathode column passageway 10 on the main cathode base 6, secondary cathode column 1 is connected with main cathode base 6 by the entering of secondary cathode column passageway 10, and main cathode cooling water pipe line 8 is U type structure in this embodiment, and the cooling water gets into through main cathode cooling water pipe line 8, realizes the whole cooling to main negative pole and secondary cathode 2.
Further, main cathode ceramic insulator 7 is hollow structure, and three bolt through-hole of terminal surface evenly distributed also evenly distributed has three through-hole on the brace table 32, with the three bolt through-hole phase-match of main cathode ceramic insulator 7 terminal surface evenly distributed, both use bolt fixed connection. The end face of the main cathode ceramic insulating seat 7 is also provided with a secondary cathode column channel hole 12 and an air inlet 13, the air inlet pipeline 9 is inserted into the device through the air inlet 13, and the secondary cathode column 1 is inserted into the secondary cathode column channel 10 through the secondary cathode column channel hole 12.
Further, the inner diameter of the main cathode ceramic insulating seat 7 is matched with the outer diameter of the main cathode seat 6. The secondary cathode ceramic insulating seat 4 is of a hollow structure, the outer diameter of the secondary cathode ceramic insulating seat 4 is matched with the inner diameter of the main barrel 31, and the inner diameter of the secondary cathode ceramic insulating seat 4 is matched with the outer diameter of the secondary cathode 2.
Further, 2 terminal surfaces of inferior negative pole are equipped with the mounting hole, 1 one end of inferior negative pole post with the mounting hole is connected, and the other end is connected with main negative pole seat 6 after getting into by inferior negative pole post passageway 10 to make main negative pole with 2 electricity of inferior negative pole are connected, and inferior negative pole post 1 is cylindrical structure, is made by metal oxygen-free copper material, and the outer winding has the insulating covering of polyimide. The materials of the secondary cathode 2 and the main cathode body 5 are both metal tungsten, and the materials have high electronic heating rate, high temperature resistance and good machinability. The main cathode base 6 is made of metal oxygen-free copper, and the material has good thermal conductivity.
Further, the main tub 31 and the support platform 32 are integrally formed.
The working principle is as follows: the heating power supply is used for electrifying and heating the anode 3 and the main cathode, the main cathode and the secondary cathode 2 are electrically connected through the secondary cathode column 1, when the main cathode is electrified, the power supply with the same parameters can be realized for the secondary cathode 2, then a strong magnetic field is applied in the parallel direction of the main barrel 31, the potential difference is loaded between the anode 3 and the main cathode and the secondary cathode 2, a certain amount of gas is fed through the gas inlet pipeline 9, and the gas is ionized to generate ions; then, the output current of a heating power supply of the main cathode is cut off, the main cathode body 5 and the secondary cathode 2 are made of metal tungsten, a certain voltage and an anode 3 loading potential difference exist after the heating power supply is cut off, the secondary cathode column 1 is utilized to realize the electric connection between the main cathode and the secondary cathode 2, the main cathode and the secondary cathode 2 can be kept to continuously run to discharge, ions can be continuously generated by continuous discharge, secondly, a main cathode cooling water pipeline 8 is arranged, cooling water enters through the main cathode cooling water pipeline 8, the integral cooling of the main cathode and the secondary cathode 2 is realized, the service lives of the main cathode and the secondary cathode 2 are finally prolonged, the generation promoting discharge potential difference between the main cathode and the secondary cathode 2 and the anode 3 is reduced, the risk of short circuit is reduced, and stable discharge is realized.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a mixed cathode ion source device of self-heating transmission type, its characterized in that includes main negative pole, secondary cathode and positive pole, main negative pole with secondary cathode passes through secondary cathode column and connects, the positive pole includes main bucket, main bucket inner wall is equipped with a supporting bench, main negative pole with a supporting bench passes through main cathode ceramic insulator and connects, secondary cathode with main bucket passes through secondary cathode ceramic insulator and connects, it has the admission line to alternate on the main cathode ceramic insulator.
2. The self-heating emission type mixed cathode ion source device according to claim 1, wherein the main cathode comprises a main cathode body and a main cathode base, the main cathode base has a cylindrical concave hole structure, the main cathode body has a cylindrical convex boss structure, and the convex boss of the main cathode body is matched with the concave hole of the main cathode base.
3. The self-heating emission type mixed cathode ion source device according to claim 2, wherein the main cathode base is provided with a main cathode cooling water pipe and a sub-cathode column passage.
4. The self-heating emission type mixed cathode ion source device according to claim 2, wherein the inner sidewall of the recess of the main cathode base is provided with an internal thread, and the outer sidewall of the projection of the main cathode body is provided with an external thread matching with the internal thread.
5. The self-heating emission type mixed cathode ion source device according to claim 2, wherein the main cathode ceramic insulating base has a hollow structure, three bolt through holes are uniformly distributed on the end face, and the main cathode ceramic insulating base is connected to the support base through bolts.
6. The self-heating emissive mixed cathode ion source device according to claim 5, wherein the inner diameter of the ceramic insulator base of the main cathode matches the outer diameter of the main cathode base.
7. The self-heating emission type mixed cathode ion source device according to claim 1, wherein the ceramic insulating base of the secondary cathode has a hollow structure, an outer diameter of the ceramic insulating base of the secondary cathode matches an inner diameter of the main barrel, and an inner diameter of the ceramic insulating base of the secondary cathode matches an outer diameter of the secondary cathode.
8. The self-heating emission type mixed cathode ion source device according to claim 3, wherein the secondary cathode has a mounting hole at one end surface, and the secondary cathode pillar is connected to the mounting hole at one end and to the primary cathode base after entering from the secondary cathode pillar channel at the other end.
9. The self-heating emissive type mixed cathode ion source device according to claim 1, wherein the main barrel and the support base are of an integrally formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121117490.5U CN214851956U (en) | 2021-05-24 | 2021-05-24 | A self-heating emission type hybrid cathode ion source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121117490.5U CN214851956U (en) | 2021-05-24 | 2021-05-24 | A self-heating emission type hybrid cathode ion source device |
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| Publication Number | Publication Date |
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| CN214851956U true CN214851956U (en) | 2021-11-23 |
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| CN202121117490.5U Active CN214851956U (en) | 2021-05-24 | 2021-05-24 | A self-heating emission type hybrid cathode ion source device |
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2021
- 2021-05-24 CN CN202121117490.5U patent/CN214851956U/en active Active
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