CN101964617A - Non-contact driving method for Faraday cylinder in accelerator - Google Patents
Non-contact driving method for Faraday cylinder in accelerator Download PDFInfo
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- CN101964617A CN101964617A CN 201010252273 CN201010252273A CN101964617A CN 101964617 A CN101964617 A CN 101964617A CN 201010252273 CN201010252273 CN 201010252273 CN 201010252273 A CN201010252273 A CN 201010252273A CN 101964617 A CN101964617 A CN 101964617A
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- accelerator
- faraday cup
- driving method
- metal tube
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 230000008878 coupling Effects 0.000 claims description 22
- 238000010168 coupling process Methods 0.000 claims description 22
- 238000005859 coupling reaction Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 18
- 238000012423 maintenance Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a non-contact driving method for a Faraday cylinder in an accelerator, which comprises the steps that a non-magnetic metal tube (1) and a shell (4) of a vacuum system are made into an integral structure, a magnetic column (3) is embedded at the upper end of a magnetic column body (9), a Faraday cylinder (10) is connected onto the magnetic column body (9), the magnetic column (3) is placed in the non-magnetic metal tube (1) communicated with the vacuum system, the magnetic column (3) can move smoothly in the metal tube (1), a magnetic ring (2) is sleeved outside the metal tube (1), the polarity direction of the magnetic ring (2) is opposite to that of the magnetic column (3), and the magnetic column (3) is coupled with the magnetic core of the magnetic ring (2). The invention provides a non-contact driving method which is accurate in positioning and high in driving speed and is used for rapid reciprocating motion devices such as a Faraday cylinder in an accelerator.
Description
Technical field
The present invention relates to the accelerator art field, particularly a kind of noncontact driving method that is used for the accelerator Faraday cup.
Background technology
In the accelerator field, the path that line transmitted is generally in high vacuum, according to different purposes needs, the device that many motions are arranged in vacuum system, the Faraday cup of using as beam current measurement, the light hurdle of limit bundle usefulness, be used to observe the quartzy target or the fluorescent target of bundle spot, material target of Physical Experiment or the like, drive the general present two kinds of methods that have usually in the world of these equipment: first kind is the movable sealing method, rely on pressure that rubber ring and slide bar are sealed, this method is easy to generate gas leakage when slide bar moves, and vacuum moment is degenerated.Second kind is to rely on welding bellows to stretch and compression seal, this method is present the most general in the world a kind of method, in the parts moving process, can not produce gas leakage, be applicable to the equipment of high vacuum frequent movement, shortcoming is that the parts shift motion is shorter, and frequent movement very easily causes the bellows metal fatigue to produce gas leakage.
All Faraday cups, slit instrument all are to adopt second method on the HI-13 tandem accelerator at present.Along with the accelerator increase of service life, on the accelerator spoilage of more or less a hundred Faraday cup also in year by year rising, particularly those frequent use as low energy end Faraday cup, picture point Faraday cup etc., all be bellows frequent use to have caused damage gas leakage.Changing bellows is a very difficult job, and each maintenance all will spend the plenty of time, influence accelerator operation, and need the equipment of maintenance often be activation seriously, the maintainer will suffer very big radioactive dosage.
And at present in vacuum equipment, in order to guarantee the sealing of vacuum environment and its external environment condition, the technical staff also has the contactless magnetic-coupled type of drive of employing to solve.Close the straight line rotating driver as having proposed a kind of magnetic knot among the Chinese utility model patent specification ZL200920011045.3, this utility model adopts in that outer tube is inside and outside the mutual transmission of magnetic patch between realizing is installed respectively.China utility model patent specification ZL02261867.8 and in " mechanical engineer " magazine of publishing in 2002 " Nonconnect Type Magnetic Pole Coupling of Shaft Coupling " literary composition a kind of contactless magnetic couplings shaft coupling was once disclosed, this device magnet is embedded on the driving shaft output end face and the driven shaft input end face on, realize motion by the coupling between the magnet.But at present disclosed above patent documentation and article all are coupled arrangement between face and the face between employing magnet N, the S, as shown in Figure 2, coupling dividing plate both sides N, the S utmost point are inhaled mutually between the face face, the two sides can not relative motion, and in moving process, produce friction with central dividing plate, therefore this arrangement can not be realized reciprocating motion fast, and the mode of the face face coupling phenomenon that is easy to take off coupling, can't realize the purpose of fast driving Faraday cup in accelerator.
Summary of the invention
The present invention has overcome deficiency of the prior art, provides a kind of and locatees accurately, actuating speed is fast is used for the noncontact driving method of reciprocator fast such as accelerator Faraday cup.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of noncontact driving method that is used for the accelerator Faraday cup, the shell that comprises nonmagnetic metal pipe and vacuum system is made overall structure, the magnetic post is embedded in the upper end of magnetic cylinder, Faraday cup is connected on the magnetic cylinder, and key is, the magnetic post is placed in the nonmagnetic metal pipe that communicates with vacuum system, the magnetic post can smoothly move in metal tube, metal tube is with magnet ring outward, and the magnet ring polar orientation is opposite with the magnetic post, magnetic post and the coupling of magnet ring magnetic core.
Wherein said magnet ring and magnetic post adopt permanent magnet.The material of described nonmagnetic metal pipe is stainless steel or copper or aluminium.
Compared with prior art, the invention has the beneficial effects as follows: the magnetic post is with strong magnet ring outward in this method, magnetic post in the vacuum will be stablized the position, middle that rests on magnet ring like this, reach the balance of magnetic force, when magnet ring moved up and down, the magnetic post in the metal tube was also along with motion, and the magnetic post can not produce friction with metal tube simultaneously, outside magnet ring can drive the magnetic post fast and moves up and down in the reciprocating motion process, has well prevented to take off the coupling phenomenon in the time of rapid movement.
Description of drawings
Fig. 1 principle schematic
Fig. 2 face and face coupled arrangement schematic diagram
Fig. 3 magnetic core coupling perspective view
The view of Fig. 4 Faraday cup when the upper end
View when Fig. 5 Faraday cup arrives the lower end
1 metal tube, 2 magnet rings, 3 magnetic posts, 4 shells, 5 cylinders, 6 cylinder axis, 7 bearing supports, 8 coupling assemblings, 9 magnetic cylinders, 10 Faraday cups
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
As Fig. 1, Fig. 3, shown in Figure 5, nonmagnetic metal pipe 1 is made whole structure with the shell 4 of vacuum system, and wherein nonmagnetic metal pipe 1 adopts stainless steel or materials such as copper or aluminium to make.Cylinder 5 is fixed on the bearing support 7, and cylinder axis 6 is connected with coupling assembling 8, drives coupling assembling 8 and moves up and down, and magnet ring 2 is embedded on the coupling assembling 8.Magnetic post 3 is embedded in the upper end of magnetic cylinder 9, and the lower end of magnetic cylinder 9 is connected with Faraday cup 10.Present embodiment adopts strong magnetic post 3 to be connected with magnetic cylinder 9, magnetic post 3 and magnetic cylinder 9 are placed in the nonmagnetic metal pipe 1 that communicates with vacuum system, magnetic post 3 and magnetic cylinder 9 can smoothly move in metal tube 1, be with strong magnet ring 2 outside the metal tube 1, its polar orientation is opposite with magnetic post 3, make magnet ring 2 and magnetic post 3 that the magnetic core coupling take place, make that lower magnetic force reaches magnetic balanced on the magnetic post 3, magnetic post 3 in the vacuum will be stablized the position, middle that rests on magnet ring 2 like this, and with metal tube 1 any friction does not take place, can reach fast like this and be synchronized with the movement.Wherein magnetic cylinder 9 and Faraday cup 10 are connected by mechanical means, by the motion of control vacuum system outer magnetic ring 2, by the magnetic core coupling and then drive the 3 synchronous reciprocating motions of vacuum inside magnet column.Present embodiment adopts the cylinder axis 6 of cylinder 5 to drive coupling assembling 8 and moves up and down, and drives magnet ring 2 upper and lower motions, and the magnetic post 3 upper and lower motions by in magnetic core coupling and then the drive vacuum realize the motion of Faraday cup 10 in the control vacuum.
The operation principle of this method is as follows:
As shown in Figure 5, when cylinder 5 inlet closes, when inflate the gas outlet, cylinder axis 6 extends fast, and drives coupling assembling 8 and move downward jointly, stops when arriving cylinder 5 ranges, meanwhile the magnetic post 3 that intercouples with magnet ring 2 moves downward jointly, drive magnetic cylinder 9 and move downward, also drive coupled Faraday cup 10 and move downward jointly, thereby realize Faraday cup 10 displacement in a vacuum.In like manner, when the air inlet open of cylinder 5, when the gas outlet was closed, cylinder axis 6 was regained fast.Drive Faraday cup 10 and move upward, as shown in Figure 4, realize a reciprocating motion of the Faraday cup 10 in the vacuum.
The present invention is by magnet ring 2 and the coupling of magnetic post 3 magnetic cores, drive the accurate location of Faraday cup 10 in the vacuum, make vacuum drive moving component in the vacuum outward, need not the movable sealing and the bellows element of transmission, reduce the maintenance number of times, and then reduced the maintainer and will bear certain dosage, exempted the replacing bellows simultaneously, reduced cost, wherein this method middle magnetic ring 2, magnetic post 3 all are the permanent magnets that adopts.
Obviously; the above embodiments are in order better to explain the present invention; rather than to the restriction of claim protection range of the present invention; if those skilled in the art is according to design of the present invention, design of the present invention is applied on other quick reciprocating devices also belongs to the scope that the present invention asks for protection.
Claims (3)
1. noncontact driving method that is used for the accelerator Faraday cup, the shell (4) that comprises nonmagnetic metal pipe (1) and vacuum system is made overall structure, magnetic post (3) is embedded in the upper end of magnetic cylinder (9), Faraday cup (10) is connected on the magnetic cylinder (9), it is characterized in that, magnetic post (3) is placed in the nonmagnetic metal pipe (1) that communicates with vacuum system, magnetic post (3) can smoothly move in metal tube (1), the outer magnet ring (2) that is with of metal tube (1), magnet ring (2) polar orientation is opposite with magnetic post (3), magnetic post (3) and the coupling of magnet ring (2) magnetic core.
2. a kind of noncontact driving method that is used for the accelerator Faraday cup according to claim 1 is characterized in that described magnet ring (2) and magnetic post (3) are permanent magnet.
3. a kind of noncontact driving method that is used for the accelerator Faraday cup according to claim 1, the material of described nonmagnetic metal pipe (1) is stainless steel or copper or aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252273 CN101964617A (en) | 2010-08-13 | 2010-08-13 | Non-contact driving method for Faraday cylinder in accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252273 CN101964617A (en) | 2010-08-13 | 2010-08-13 | Non-contact driving method for Faraday cylinder in accelerator |
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| Publication Number | Publication Date |
|---|---|
| CN101964617A true CN101964617A (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010252273 Pending CN101964617A (en) | 2010-08-13 | 2010-08-13 | Non-contact driving method for Faraday cylinder in accelerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330817A (en) * | 2014-09-13 | 2015-02-04 | 中国科学院近代物理研究所 | Faraday cylinder for high-energy high-current accelerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317058Y (en) * | 1998-02-24 | 1999-05-05 | 中国科学院沈阳科学仪器研制中心 | Ring magnetic steel driven manipulator |
| CN1599227A (en) * | 2004-07-28 | 2005-03-23 | 谭晛 | Contactless magnomotive, magnetic confinement mechanism |
| CN101183823A (en) * | 2007-11-29 | 2008-05-21 | 中国科学院电工研究所 | Rectilinear movement magnetic gearing |
| CN201398162Y (en) * | 2009-02-27 | 2010-02-03 | 大连齐维科技发展有限公司 | Magnetic combination linear and rotary driver |
-
2010
- 2010-08-13 CN CN 201010252273 patent/CN101964617A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317058Y (en) * | 1998-02-24 | 1999-05-05 | 中国科学院沈阳科学仪器研制中心 | Ring magnetic steel driven manipulator |
| CN1599227A (en) * | 2004-07-28 | 2005-03-23 | 谭晛 | Contactless magnomotive, magnetic confinement mechanism |
| CN101183823A (en) * | 2007-11-29 | 2008-05-21 | 中国科学院电工研究所 | Rectilinear movement magnetic gearing |
| CN201398162Y (en) * | 2009-02-27 | 2010-02-03 | 大连齐维科技发展有限公司 | Magnetic combination linear and rotary driver |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330817A (en) * | 2014-09-13 | 2015-02-04 | 中国科学院近代物理研究所 | Faraday cylinder for high-energy high-current accelerator |
| CN104330817B (en) * | 2014-09-13 | 2017-06-16 | 中国科学院近代物理研究所 | High energy high-current accelerator Faraday cup |
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Application publication date: 20110202 |