CN107889336B - Ion source replacement device in cyclotron and application method thereof - Google Patents
Ion source replacement device in cyclotron and application method thereof Download PDFInfo
- Publication number
- CN107889336B CN107889336B CN201711309362.9A CN201711309362A CN107889336B CN 107889336 B CN107889336 B CN 107889336B CN 201711309362 A CN201711309362 A CN 201711309362A CN 107889336 B CN107889336 B CN 107889336B
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- ion source
- outer sleeve
- connecting flange
- sleeve
- cyclotron
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000000605 extraction Methods 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 description 66
- 239000002245 particle Substances 0.000 description 11
- 230000005684 electric field Effects 0.000 description 6
- 239000010406 cathode material Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H13/00—Magnetic resonance accelerators; Cyclotrons
- H05H13/005—Cyclotrons
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/08—Arrangements for injecting particles into orbits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/08—Arrangements for injecting particles into orbits
- H05H2007/081—Sources
- H05H2007/082—Ion sources, e.g. ECR, duoplasmatron, PIG, laser sources
Abstract
The invention discloses an ion source replacement device in a cyclotron and a use method thereof, wherein the ion source replacement device comprises a first connecting flange, a second connecting flange, a vacuum extraction opening, a supporting platform, an adjusting nut, an ion source head, a manual gate valve, a bracket, an inner sleeve, an outer sleeve and a third connecting flange; the ion source part is arranged at the top of the inner sleeve, the inner sleeve is vertically arranged in the outer sleeve, the outer sleeve is divided into an upper-section outer sleeve, a middle-section outer sleeve and a lower-section outer sleeve, the upper-section outer sleeve, the middle-section outer sleeve and the lower-section outer sleeve are connected with the first connecting flange through the second connecting flange, and a manual gate valve and a vacuum extraction opening are arranged on the upper-section outer sleeve; the lower section outer tube below is vertical to be fixed at the supporting platform top, the supporting platform right side is provided with support slide complex slider, and supporting platform passes through the slider and installs on the support. The invention has the characteristics of simple structure, convenient operation and accurate positioning.
Description
Technical Field
The invention relates to an ion source replacing device in a cyclotron and a using method thereof, in particular to an ion source replacing device in the cyclotron, which has the advantages of simple structure, convenient operation and accurate positioning and a using method thereof.
Background
The Cyclotron (Cyclotron) is a device which makes charged particles perform Cyclotron motion by utilizing a magnetic field and an electric field together, and repeatedly accelerates the charged particles in the motion through a high-frequency electric field, and is an important instrument in high-energy physics. The simplest cyclotron consists of two D-shaped copper cavities in a uniform magnetic field. A high frequency oscillator is connected across the two chambers. Obviously, the electric field is only present in the gap between the two cavities, and the charged particles are only energized when they pass through the gap. The two chambers are sealed in a vacuum chamber to reduce energy losses due to collisions with air molecules.
When the charge is accelerated by the electric field in the void into a certain D-shaped cavity, the acceleration process begins and once the charge enters the cavity, it will follow a semicircular path. There is no electric field in the cavity so the charged particle velocity remains unchanged. If the frequency of the oscillator is the same as the convolution frequency, the polarity of the applied voltage changes just when the charged particles reach the gap, and the direction of the electric field in the gap changes, so that the particles are accelerated and enter another D-shaped cavity, and the radius of the movement of the particles is larger. In this way, the particles gain some kinetic energy each time they pass through the void, thus entering a larger radius of motion trajectory. This process is repeated until the particles are ejected from the boundaries of the D-shaped cavity. The kinetic energy of the charged particles is related to the radius of the D-shaped cavity. When the magnetic flux density is given, the kinetic energy of the charged particles can only be increased by an increase in the cavity radius.
The cyclotron is provided with an Ion generating device called an Ion source (English name: ion source). An ion source is a device that ionizes neutral atoms or molecules and directs a stream of ions therefrom.
The ion source is used as a source for generating ions of the cyclotron and is one of core components of the cyclotron. The internal ion source has a certain service life due to consumption and loss of cathode materials during operation. As the working time of the cyclotron increases, the loss of cathode materials and the cleaning of anode attachments in the internal ion source increase, and the internal ion source needs to be replaced and maintained regularly, so that the high working efficiency of the internal ion source is maintained. Most cyclotrons replace the internal ion source by opening a cavity, however, such replacement can break the vacuum of the host machine, delaying the normal operation time of the accelerator.
Disclosure of Invention
The invention aims to provide an ion source replacement device in a cyclotron, which has the advantages of simple structure, convenient operation and accurate positioning, and a use method thereof.
The aim of the invention can be achieved by the following technical scheme:
an ion source replacing device in a cyclotron comprises a first connecting flange, a second connecting flange, a vacuum extraction opening, a supporting platform, an adjusting nut, an ion source head, a manual gate valve, a bracket, an inner sleeve, an outer sleeve and a third connecting flange;
the ion source part is arranged at the top of the inner sleeve, the inner sleeve is vertically arranged in the outer sleeve, the outer sleeve is divided into an upper-section outer sleeve, a middle-section outer sleeve and a lower-section outer sleeve, the upper-section outer sleeve, the middle-section outer sleeve and the lower-section outer sleeve are connected with the first connecting flange through the second connecting flange, and a manual gate valve and a vacuum extraction opening are arranged on the upper-section outer sleeve; the lower section of the outer sleeve is vertically fixed at the top of the supporting platform, the right side of the supporting platform is provided with a sliding block matched with the support slideway, and the supporting platform is arranged on the support through the sliding block;
the central axes of the inner sleeve and the outer sleeve are coincident;
the manual gate valve is an air-tight switch arranged in a gap between the inner sleeve and the outer sleeve;
the supporting platform slides and is fixed along the bracket through a sliding block;
the vacuum extraction opening is connected with a vacuum pump, and when the vacuum pump is in a working state, the vacuum state of a gap between the inner sleeve and the outer sleeve is maintained;
the third connecting flange is arranged at the top of the upper outer sleeve;
sealing rings are arranged in the first connecting flange, the second connecting flange and the third connecting flange, so that the tightness in the outer sleeve is maintained;
an internal ion source is mounted on top of the ion source head.
A method for using an ion source replacing device in a cyclotron comprises an inner ion source disassembling method and an inner ion source installing method, wherein,
the method for detaching the internal ion source comprises the following steps:
step S101, a vacuum extraction opening is connected with a vacuum pump to always work so as to ensure the vacuum degree of a gap between an inner sleeve and an outer sleeve, a fixed caliper of a first connecting flange on a cyclotron is disassembled, a lower section of outer sleeve is manually moved downwards slowly, and when the head of an ion source is moved to the height of an original manual gate valve, the manual gate valve is manually closed;
step S102, closing the vacuum pump, and detaching calipers of the second connecting flange;
and step S103, detaching the inner ion source from the ion source head to finish detachment.
The method for installing the internal ion source comprises the following steps:
step S201, respectively installing a third connecting flange and a second connecting flange at the upper end and the lower end of the bottom of the upper outer sleeve, and installing an inner sleeve in the upper outer sleeve to keep the central axes of the inner sleeve and the upper outer sleeve coincident;
step S202, installing a second connecting flange and a first connecting flange at the upper port and the lower port of the middle-section outer sleeve, wherein the middle-section outer sleeve is fixed at the top of the lower-section outer sleeve through the first connecting flange;
step S203, an inner ion source is arranged on the head of the ion source, and then the upper section of outer sleeve is fixed on the top of the middle section of outer sleeve through a second connecting flange;
step S204, closing the manual gate valve, opening a vacuum pump connected with a vacuum extraction opening, and opening the manual gate valve when the gap vacuum degree between the upper inner sleeve and the lower inner sleeve of the manual gate valve is consistent with that between the upper inner sleeve and the outer sleeve of the manual gate valve;
step S205, adjusting an adjusting nut to enable the source position of the internal ions to be located on the central axis of the ion source cavity of the cyclotron;
and S206, adjusting the vertical height of the supporting platform, and fixing a third connecting flange on the outer cornice of the ion source cavity to finish the installation of the inner ion source.
The invention provides an ion source replacement device in a cyclotron and a use method thereof, and the ion source replacement device has the characteristics of simple structure, convenience in operation and accurate positioning. According to the invention, the manual gate valve is adopted to replace the pneumatic gate valve, so that the electromagnetic switch is prevented from malfunctioning and not working under the influence of the magnetic field of the accelerator; the support and the support platform are fixed in a sliding manner, so that when the device is used for installing the inner ion source, the central shafts of the inner sleeve and the outer sleeve are ensured to coincide, and the vertical accuracy is higher when the inner ion source is installed; and when the manual gate valve and the vacuum extraction opening are used for installing and detaching the inner ion source, the vacuum degree of a gap between the inner sleeve and the outer sleeve is ensured.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
Fig. 1 is a schematic structural view of an ion source replacing device in a cyclotron according to the present invention.
Detailed Description
The aim of the invention can be achieved by the following technical scheme:
referring to fig. 1, an ion source replacing device in a cyclotron comprises a first connecting flange 1, a second connecting flange 2, a vacuum pumping port 3, a supporting platform 4, an adjusting nut 5, an ion source head 6, a manual gate valve 7, a bracket 8, an inner sleeve 9, an outer sleeve 10 and a third connecting flange 11;
the ion source head 6 is arranged at the top of the inner sleeve 9, the inner sleeve 9 is vertically arranged in the outer sleeve 10, the outer sleeve 10 is divided into an upper outer sleeve 101, a middle outer sleeve 102 and a lower outer sleeve 103, the upper outer sleeve 101, the middle outer sleeve 102 and the lower outer sleeve 103 are connected with the first connecting flange 1 through the second connecting flange 2, and the upper outer sleeve 101 is provided with a manual gate valve 7 and a vacuum extraction opening 3; the lower section of the outer sleeve 103 is vertically fixed at the top of the supporting platform 4, a sliding block matched with a slide way of the support 8 is arranged on the right side of the supporting platform 4, and the supporting platform 4 is arranged on the support 8 through the sliding block;
the central axes of the inner sleeve 9 and the outer sleeve 10 coincide;
the manual gate valve 7 is an air-tight switch arranged in a gap between the inner sleeve 9 and the outer sleeve 10, and is used for controlling the communication between the upper inner sleeve 9, the lower inner sleeve 9 and the outer sleeve 10 of the manual gate valve 7, so that the electromagnetic switch of the pneumatic gate valve is prevented from malfunctioning and not working under the influence of the magnetic field of the accelerator;
the supporting platform 4 slides and is fixed along the bracket 8 through a sliding block;
the vacuum extraction opening 3 is connected with a vacuum pump, and maintains the vacuum state of the gap between the inner sleeve 9 and the outer sleeve 10 in the working state;
the third connecting flange 11 is arranged on the top of the upper outer sleeve 101;
sealing rings are arranged in the first connecting flange 1, the second connecting flange 2 and the third connecting flange 11, so that the tightness in the outer sleeve 10 is maintained;
an internal ion source is mounted on top of the ion source head 6.
A method for using an ion source replacing device in a cyclotron comprises an inner ion source disassembling method and an inner ion source installing method, wherein,
the method for detaching the internal ion source comprises the following steps:
step S101, a vacuum extraction opening 3 is connected with a vacuum pump to work all the time so as to ensure the vacuum degree of a gap between an inner sleeve 9 and an outer sleeve 10, a fixed caliper of a first connecting flange 1 on a cyclotron is disassembled, a lower outer sleeve 103 is manually moved downwards slowly, and after an ion source head 6 is moved to the height of an original manual gate valve 7, the manual gate valve 7 is manually closed so as to ensure that the vacuum in an inner ion source cavity is not destroyed;
step S102, closing the vacuum pump, and detaching calipers of the second connecting flange 2;
and step S103, detaching the inner ion source from the ion source head 6 to finish detachment.
The method for detaching the internal ion source comprises the following steps:
step S201, respectively installing the upper port and the lower port of the bottom of the upper outer sleeve 101 into the upper outer sleeve 101 by a third connecting flange 11 and a second connecting flange 2, and keeping the central axes of the inner sleeve 9 and the upper outer sleeve 101 coincident;
step S202, installing a second connecting flange 2 and a first connecting flange 1 at the upper and lower ports of the middle outer sleeve 102, wherein the middle outer sleeve 102 is fixed at the top of the lower outer sleeve 103 through the first connecting flange 1;
step S203, an inner ion source is arranged on the ion source head 6, and then the upper section outer sleeve 101 is fixed on the top of the middle section outer sleeve 102 through the second connecting flange 2;
step S204, closing the manual gate valve 7, opening a vacuum pump connected with the vacuum extraction opening 3, and opening the manual gate valve 7 when the gap vacuum degree between the upper inner sleeve 9 and the lower inner sleeve 9 of the manual gate valve 7 and the outer sleeve 10 is consistent;
step S205, adjusting the adjusting nut 5 to enable the inner ion source head 6 to be positioned on the central axis of the ion source cavity of the cyclotron;
and S206, adjusting the vertical height of the supporting platform 4, and fixing the third connecting flange 11 on the outer cornice of the ion source cavity to finish the installation of the inner ion source.
The invention provides an ion source replacement device in a cyclotron and a use method thereof, and the ion source replacement device has the characteristics of simple structure, convenience in operation and accurate positioning. According to the invention, the manual gate valve is adopted to replace the pneumatic gate valve, so that the electromagnetic switch is prevented from malfunctioning and not working under the influence of the magnetic field of the accelerator; the support and the support platform are fixed in a sliding manner, so that when the device is used for installing the inner ion source, the central shafts of the inner sleeve and the outer sleeve are ensured to coincide, and the vertical accuracy is higher when the inner ion source is installed; and when the manual gate valve and the vacuum extraction opening are used for installing and detaching the inner ion source, the vacuum degree of a gap between the inner sleeve and the outer sleeve is ensured.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides an ion source change device in cyclotron, includes first connection flange (1), second flange (2), vacuum extraction opening (3), supporting platform (4), adjusting nut (5), ion source head (6), manual push-pull valve (7), support (8), interior sleeve pipe (9), outer tube (10), third flange (11), its characterized in that; the ion source head (6) is arranged at the top of the inner sleeve (9), the inner sleeve (9) is vertically arranged in the outer sleeve (10), the outer sleeve (10) is divided into an upper-section outer sleeve (101), a middle-section outer sleeve (102) and a lower-section outer sleeve (103), the upper-section outer sleeve (101), the middle-section outer sleeve (102) and the lower-section outer sleeve (103) are connected with the first connecting flange (1) through the second connecting flange (2), and a manual gate valve (7) and a vacuum extraction opening (3) are arranged on the upper-section outer sleeve (101); the lower section outer sleeve (103) is vertically fixed at the top of the supporting platform (4), a sliding block matched with a slide way of the bracket (8) is arranged on the right side of the supporting platform (4), and the supporting platform (4) is arranged on the bracket (8) through the sliding block;
a method of using a cyclotron internal ion source replacement device, the method comprising an internal ion source disassembly method and an internal ion source installation method, wherein the internal ion source disassembly method comprises the steps of:
step S101, a vacuum extraction opening (3) is connected with a vacuum pump to work all the time so as to ensure the vacuum degree of a gap between an inner sleeve (9) and an outer sleeve (10), a fixed caliper of a first connecting flange (1) on a cyclotron is disassembled, a lower section of outer sleeve (103) is manually moved downwards slowly, and after an ion source head (6) is moved to the height of an original manual gate valve (7), the manual gate valve (7) is manually closed;
s102, closing the vacuum pump, and detaching calipers of the second connecting flange (2);
step S103, detaching the inner ion source from the ion source head (6) to finish detachment;
the method for installing the internal ion source comprises the following steps:
step S201, respectively installing a third connecting flange (11) and a second connecting flange (2) at the upper and lower ports at the bottom of the upper outer sleeve (101), and installing an inner sleeve (9) in the upper outer sleeve (101) to keep the central axes of the inner sleeve (9) and the upper outer sleeve (101) coincident;
step S202, installing a second connecting flange (2) and a first connecting flange (1) at the upper port and the lower port of a middle-section outer sleeve (102), wherein the middle-section outer sleeve (102) is fixed at the top of a lower-section outer sleeve (103) through the first connecting flange (1);
step S203, an inner ion source is arranged on the ion source head (6), and then the upper section outer sleeve (101) is fixed on the top of the middle section outer sleeve (102) through the second connecting flange (2);
s204, closing a manual gate valve (7), and opening a vacuum pump connected with a vacuum pumping port (3), wherein when the gap vacuum degree between an upper inner sleeve (9) and a lower inner sleeve (10) of the manual gate valve (7) is consistent with that of an outer sleeve (10), the manual gate valve (7) is opened;
step S205, adjusting the adjusting nut (5) to enable the inner ion source head (6) to be positioned on the central axis of the ion source cavity of the cyclotron;
and S206, adjusting the vertical height of the supporting platform (4), and fixing the third connecting flange (11) on the outer cornice of the ion source cavity to finish the installation of the inner ion source.
2. The ion source exchange device in a cyclotron according to claim 1, characterized in that the central axes of the inner sleeve (9) and the outer sleeve (10) coincide.
3. The ion source replacing apparatus in a cyclotron according to claim 1, wherein said manual gate valve (7) is a gas-tight switch provided in a gap between an inner sleeve (9) and an outer sleeve (10).
4. The ion source changing device in a cyclotron according to claim 1, characterized in that the support platform (4) slides and is fixed along the support (8) by means of a slide.
5. The ion source changing device in a cyclotron according to claim 1, wherein the vacuum extraction opening (3) is connected to a vacuum pump, and in the operating state, the vacuum state of the gap between the inner sleeve (9) and the outer sleeve (10) is maintained.
6. The ion source changing device in a cyclotron according to claim 1, wherein the third connection flange (11) is installed on top of the upper section outer sleeve (101).
7. The ion source replacing apparatus of claim 1, wherein sealing rings are installed in the first connecting flange (1), the second connecting flange (2) and the third connecting flange (11), and the sealing performance in the outer sleeve (10) is maintained.
8. A cyclotron internal ion source replacement device according to claim 1, characterized in that the top of the ion source head (6) mounts an internal ion source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309362.9A CN107889336B (en) | 2017-12-11 | 2017-12-11 | Ion source replacement device in cyclotron and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309362.9A CN107889336B (en) | 2017-12-11 | 2017-12-11 | Ion source replacement device in cyclotron and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107889336A CN107889336A (en) | 2018-04-06 |
| CN107889336B true CN107889336B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711309362.9A Active CN107889336B (en) | 2017-12-11 | 2017-12-11 | Ion source replacement device in cyclotron and application method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113038686A (en) * | 2021-03-15 | 2021-06-25 | 合肥中科离子医学技术装备有限公司 | Device for maintaining ion source of superconducting cyclotron |
| CN115346849B (en) * | 2022-10-18 | 2023-02-28 | 合肥中科离子医学技术装备有限公司 | Ion source assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2531065A (en) * | 1950-04-27 | 1950-11-21 | Collins Radio Co | Apparatus for changing the ion source of a cyclotron |
| CN105873351A (en) * | 2016-06-14 | 2016-08-17 | 中国工程物理研究院流体物理研究所 | Device capable of regulating position of ion source in high-vacuum state and regulation method |
| CN205508767U (en) * | 2016-03-23 | 2016-08-24 | 中国科学院等离子体物理研究所 | Scalable rotation dismantlement type fast ion source device |
| CN207505202U (en) * | 2017-12-11 | 2018-06-15 | 合肥中科离子医学技术装备有限公司 | A kind of cyclotron internal ion-source more changing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7786442B2 (en) * | 2004-06-18 | 2010-08-31 | General Electric Company | Method and apparatus for ion source positioning and adjustment |
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2017
- 2017-12-11 CN CN201711309362.9A patent/CN107889336B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2531065A (en) * | 1950-04-27 | 1950-11-21 | Collins Radio Co | Apparatus for changing the ion source of a cyclotron |
| CN205508767U (en) * | 2016-03-23 | 2016-08-24 | 中国科学院等离子体物理研究所 | Scalable rotation dismantlement type fast ion source device |
| CN105873351A (en) * | 2016-06-14 | 2016-08-17 | 中国工程物理研究院流体物理研究所 | Device capable of regulating position of ion source in high-vacuum state and regulation method |
| CN207505202U (en) * | 2017-12-11 | 2018-06-15 | 合肥中科离子医学技术装备有限公司 | A kind of cyclotron internal ion-source more changing device |
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