CN102222534B - Beam shutter for single event effect ground accelerator simulation test - Google Patents
Beam shutter for single event effect ground accelerator simulation test Download PDFInfo
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- CN102222534B CN102222534B CN 201110057061 CN201110057061A CN102222534B CN 102222534 B CN102222534 B CN 102222534B CN 201110057061 CN201110057061 CN 201110057061 CN 201110057061 A CN201110057061 A CN 201110057061A CN 102222534 B CN102222534 B CN 102222534B
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Abstract
The invention discloses a beam shutter for a single event effect ground accelerator simulation test, which comprises a mother board, a beam passing hole arranged on the mother board and a blocking piece adaptive to the size of the beam passing hole, wherein a direct current motor is further fixed at the position, close to the lower part of the center line of the mother board, of the blocking piece through a transition mounting plate, the blocking piece is fixed on a shaft of the direct current motor through a small hole at the tail end of a connecting rod of the blocking piece, a limit switch and a limit bolt are respectively arranged at two sides of the center line of the mother board, and a polarity switching circuit for changing the polarity of a power supply of the direct current motor to realize the switching of the shutter. The invention adopts bistable state, thereby greatly reducing the heat productivity of the coil, prolonging the service life of the coil and improving the accuracy of beam current on and off. The optical shutter is made of copper, so that the problem that light ions cannot be blocked due to the fact that the optical shutter blocking piece is thin is solved, the structure is simple, the mechanical action is simple, the production cost is reduced, the failure rate is reduced, and the reliability is improved.
Description
Technical field
The invention belongs to accelerator irradiation technique field, be specifically related to a kind of single particle effect ground accelerator simulation test beam current shutter.
Background technology
Single particle effect SEE (Single event effect) is the wrong effect that ion incidence causes to semiconductor device inside.In the single particle effect ground simulation test, for accurately measure fluence or when breech lock occurs protection device, need to be equipped with beam current shutter on the accelerator beam line, thereby realize accurately, break-make line timely.There is no special-purpose beam current shutter on the present beam current tube of HI-13 accelerator, the break-make of line is controlled by Faraday cylinder.Due to slow and inconvenient computer control of reaction time, so Faraday cylinder can't satisfy the demand of single particle effect experiment.
Do not have in the market special-purpose beam current shutter to sell.Domestic have the laboratory to adopt optical shutter to use as beam current shutter, but have following shortcoming:
1. catch is too thin, only has 100 about μ m, for the high ion of some range, as proton, can't stop fully when catch is closed, and this may threaten to the safety problem that SEE tests chip and experimenter.
2. catch is yielding.Ion incidence is behind catch inside, and flap of material is because the implantation membership deforms, and ion accumulation causes and can't use to a certain amount of backstop sector-meeting distortion.
3. monostable, poor reliability.The state that shutter is opened is kept by powering up, and during Long-Duration Exposure, need to power up for a long time shutter, and this can cause the Inside coil persistent fever, causes that internal resistance changes to cause moving even to burn.
Some beam current shutters according to oneself demand and equipment characteristic, have been designed in more advanced laboratory, as U.S. Brookhaven National Laboratory, utilize rotary solenoid to make special-purpose beam current shutter on the special-purpose irradiation devices of single-particle.But these shutter versatilities are little, and most shutter is all " monostable " shutter.
Summary of the invention
Needs for the defective that exists in prior art and practical application, the object of the present invention is to provide a kind of single particle effect ground accelerator simulation test beam current shutter, obviously improve the response time of shutter by this beam current shutter, improved reliability when reducing production costs.
In order to realize the foregoing invention purpose, the technical solution used in the present invention is as follows:
A kind of single particle effect ground accelerator simulation test beam current shutter, comprise motherboard, be located at the catch that the line on motherboard adapts by hole size by the hole, with line, wherein, center line at motherboard also is fixed with direct current motor by the transition installing plate on the position on the lower, described catch is fixed on the axle of direct current motor by the aperture of its connecting rod end, be respectively equipped with limit switch and caging bolt on motherboard center line both sides, also be provided with in a side of motherboard the polarity switching circuit of realizing that for changing power supply of dc motor polarity the shutter state switches.
Further, beam current shutter as above, described polarity switching circuit is made of dpdt relay, power supply, keyswitch, diode, power lead and limit switch, wherein, described dpdt relay, power supply, keyswitch all are arranged on outside target chamber, described limit switch is connected with direct current motor by power lead one end, and the other end is connected with diode on being fixed on motherboard.
Further, beam current shutter as above, described catch and connecting rod thereof are one.
Further, beam current shutter as above, described line are located at the upper right side of motherboard by the hole, are provided with mounting hole bottom motherboard.
Further, beam current shutter as above, the described catch pulling force stable maintenance by self gravitation or spring is in " opening " and "off" state.
Further, beam current shutter as above, the working power voltage of described direct current motor are 3V～9V, and preferred voltage is 5V.
Further, beam current shutter as above, the material of described catch is aluminium, stainless steel or copper.
Further, beam current shutter as above, the material of described catch is copper.
Further again, beam current shutter as above, the thickness of described catch are 0.5mm～3mm.
Further, beam current shutter as above, the thickness of described catch are 1.5mm～2.5mm.
Effect of the present invention is: beam current shutter of the present invention, can make stable the maintaining of catch " open " and " pass " free position under, this bistable state greatly reduces the thermal value of coil, has improved the coil life-span, has improved the accuracy rate that line is opened and closed; Owing to having adopted copper as material, solved optical shutter thin and can't stop the problem of light ion; And this shutter also has simple in structure, the simple characteristics of mechanical action, reduced failure rate when having reduced production cost, improved reliability.
Description of drawings
Fig. 1 is the structural representation of beam current shutter of the present invention;
Fig. 2 is the circuit diagram of polarity switching circuit of the present invention;
Fig. 3 is the structural representation of catch part of the present invention;
Fig. 4 is that catch of the present invention " is opened " by the pulling force stable maintenance of spring and the schematic diagram of "Off" state;
Fig. 5 is that catch of the present invention " is opened " by the self gravitation stable maintenance and the schematic diagram of "Off" state.
Embodiment
The present invention is described in further detail below in conjunction with Figure of description and embodiment.
Fig. 1 shows and is the structural representation of a kind of single particle effect ground accelerator simulation test of the present invention with beam current shutter, this beam current shutter comprises motherboard 10 as can be seen from Figure, be positioned at the top-right diameter of motherboard and be the line of 20mm by hole 12, the center line that is fixed on motherboard 10 by transition installing plate 11 is locational direct current motor 4 on the lower, aperture by connecting rod end is fixed on the catch 2 that is used for realizing shutter state switching state on the axle of direct current motor 4, be separately fixed at motherboard 10 center line both sides be used for realize the shutter switching state complete after limit switch 3 and the caging bolt 13 of outage, the mounting hole 14 that is positioned at motherboard 10 belows of fixing shutter be used for to be installed and to be used for changing the polarity switching circuit that direct current motor 4 electric power polarities are realized the switching of shutter state.
Fig. 2 shows the circuit diagram of polarity switching circuit of the present invention, and this circuit is made of dpdt relay 5, power supply 6, keyswitch 7, diode 8, power lead 9 and limit switch 3; Wherein dpdt relay 5 is used for realizing the switching of direct supply polarity, and power supply 6 is used to direct current motor 4 that operating voltage is provided, and switch, above element that keyswitch 7 is used for the control shutter all are placed on outside target chamber, overhauls and controls with convenient.Diode 8 is used for realizing allowing the electric current of opposed polarity pass through, because the target chamber flange-interface only has two power leads 9, therefore diode is placed in target chamber, limit switch 3 is arranged on shutter motherboard 10, be connected with direct current motor 4 by power lead 9 one ends, the other end be connected with diode 8 on being fixed on motherboard 10 be used for realizing the shutter switching state complete after outage.Shutter " is opened " and the switching of "Off" state, select direct current motor 4 to realize, direct current motor 4 has the replacing electric power polarity can change the characteristics that turn to, and therefore can switch " opening " by the method that changes electric power polarity and arrive "open" state to "off" state and " pass ".According to the characteristics of control circuit, the operating voltage of direct current motor selects 3V～9V all can.The present invention is output as 5V because of control circuit, therefore selects the 5V direct current generator.
On the shutter baffle Material selection, in theory all stable chemical natures, "dead" metal material all can.But consider recommendations for selection aluminium, stainless steel, copper etc. from aspects such as economic, easy processing stage, easily-activated degree.Because the copper atom ordinal number is higher, be difficult for being activated, and also softer, be easy to processing, be adapted at constantly groping in manufacturing process and transforming, so the present invention selects copper as the material of shutter baffle.And should be enough thick for catch 2 thickness, can block all energetic ions of accelerator, and the catch self gravitation being enough heavy, limit switch 3 can be depressed, weight is as far as possible light, to realize response speed faster.Its thickness can be selected 0.5mm～3mm.For reaching better effects, recommend 1.5mm～2.5mm.
Line of the present invention opens the door, and adopts bistable, and namely shutter baffle 2 need not to power up and can be stabilized under " opening " and " pass " arbitrary state, and this two states all need not to keep by powering up.Fig. 3 is the schematic diagram of catch 2.Bistable the keeping of catch need to realize by external force, during from a state to another state, need to apply an external force when needs again, and the size of this power is greater than the external force of the state of keeping certainly.Better simply bistable state has two kinds, and a kind of is to utilize elastic force as maintenance energy, and another kind is to utilize gravity as maintenance energy.The first schematic diagram utilizes the pulling force of spring 1 to keep bistable state as shown in Figure 4.The second schematic diagram utilizes catch 2 self gravitations as the bistable state maintenance energy as shown in Figure 5.The former advantage is: not controlled by the shutter installation direction.Shortcoming is to need to use spring, has increased equipment complexity, and has increased design size at vertical direction.Latter's advantage is: need not spring, simple in structure, the vertical direction design size is little than the former.Shortcoming is that the direction restriction is arranged when installing and using.The present invention is according to environment for use, and vertical direction limited space, and in case install can sense of rotation, therefore selects first scheme, namely relies on gravity to keep bistable.As seen from Figure 1, when catch 2 pendulum arrived the left side, line was opened by hole 12, and catch is run into left limit switch 3 and left limit bolt 13.When catch was put the right, line was blocked by hole 12, and catch is run into right limit switch 3 and caging bolt 13 simultaneously.
After adopting technique scheme to complete, find through long-term test, this shutter is compared with Faraday cylinder all having reached satisfied effect aspect the prevention ability of coil life-span, reliability, ion, has obviously improved the response time.Compare with the optics beam current shutter, owing to having taked bistable state, so reduced greatly the thermal value of coil, protected coil, thereby significantly improved the coil life-span, improved the accuracy rate that line is opened and closed.Also solve optical shutter and can't stop the problem of light ion because catch is thin.Simple in structure, the simple characteristics of mechanical action that this shutter also has have reduced failure rate and have improved reliability when having reduced production cost.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technology thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. single particle effect ground accelerator simulation test beam current shutter, comprise motherboard (10), the line of being located on motherboard (10) passes through hole (12), the catch (2) that adapts by hole (12) size with line, it is characterized in that: the center line at motherboard (10) also is fixed with direct current motor (4) by transition installing plate (11) on the position on the lower, described catch (2) is fixed on the axle of direct current motor (4) by the aperture of its connecting rod end, be equipped with limit switch (3) and caging bolt (13) on motherboard (10) center line both sides, a side at motherboard (10) also is provided with the polarity switching circuit of realizing that for changing direct current motor (4) electric power polarity the shutter state switches.
2. beam current shutter as claimed in claim 1, it is characterized in that: described polarity switching circuit is made of dpdt relay (5), power supply (6), keyswitch (7), diode (8), power lead (9) and described limit switch (3), wherein, described dpdt relay (5), power supply (6), keyswitch (7) all are arranged on outside target chamber, described limit switch (3) is connected with direct current motor (4) by power lead (9) one ends, and the other end is connected with diode (8) on being fixed on motherboard (10).
3. beam current shutter as claimed in claim 2, it is characterized in that: described catch (2) and connecting rod thereof are one.
4. beam current shutter as claimed in claim 1, it is characterized in that: described line is located at the upper right side of motherboard (10) by hole (12), is provided with mounting hole (14) in motherboard (10) bottom.
5. beam current shutter as described in one of claim 1 to 4 is characterized in that: the pulling force stable maintenance of described catch (2) by self gravitation or spring is in " opening " and "off" state.
6. beam current shutter as described in one of claim 1 to 4, it is characterized in that: the working power voltage of described direct current motor (4) is 3V～9V.
7. beam current shutter as described in one of claim 1 to 4, it is characterized in that: the material of described catch (2) is aluminium, stainless steel or copper.
8. beam current shutter as claimed in claim 6, it is characterized in that: the material of described catch (2) is copper.
9. beam current shutter as described in one of claim 1 to 4, it is characterized in that: the thickness of described catch (2) is 0.5mm～3mm.
10. beam current shutter as claimed in claim 9, it is characterized in that: the thickness of described catch (2) is 1.5mm～2.5mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110057061 CN102222534B (en) | 2011-03-10 | 2011-03-10 | Beam shutter for single event effect ground accelerator simulation test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110057061 CN102222534B (en) | 2011-03-10 | 2011-03-10 | Beam shutter for single event effect ground accelerator simulation test |
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| CN102222534A CN102222534A (en) | 2011-10-19 |
| CN102222534B true CN102222534B (en) | 2013-06-12 |
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| CN109903879B (en) * | 2019-03-14 | 2020-09-04 | 中国科学院近代物理研究所 | Rapid sample changing system for material irradiation and use method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333462A (en) * | 2001-09-03 | 2002-01-30 | 北京埃索特核电子机械有限公司 | Equipment of cobalt 60 gamma ray source-cesium iodide or cadmium tungstate detector for checking container |
| JP2002287277A (en) * | 2001-03-26 | 2002-10-03 | Fuji Photo Film Co Ltd | Shutter structure of image processor |
| CN1779445A (en) * | 2004-11-26 | 2006-05-31 | 清华同方威视技术股份有限公司 | Shutter structure of open and closed radioactive imaging checking system on train |
| CN202142310U (en) * | 2011-03-10 | 2012-02-08 | 中国原子能科学研究院 | Beam shutter used for single event effect ground accelerator simulation test |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2693586B2 (en) * | 1989-07-13 | 1997-12-24 | 三菱電機株式会社 | Image identification / tracking device |
| JPH06224000A (en) * | 1993-01-21 | 1994-08-12 | Ishikawajima Harima Heavy Ind Co Ltd | Beam shutter in particle accelerator |
| JPH09145898A (en) * | 1995-11-21 | 1997-06-06 | Ishikawajima Harima Heavy Ind Co Ltd | Beam shutter device |
| US7302043B2 (en) * | 2004-07-27 | 2007-11-27 | Gatan, Inc. | Rotating shutter for laser-produced plasma debris mitigation |
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2011
- 2011-03-10 CN CN 201110057061 patent/CN102222534B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002287277A (en) * | 2001-03-26 | 2002-10-03 | Fuji Photo Film Co Ltd | Shutter structure of image processor |
| CN1333462A (en) * | 2001-09-03 | 2002-01-30 | 北京埃索特核电子机械有限公司 | Equipment of cobalt 60 gamma ray source-cesium iodide or cadmium tungstate detector for checking container |
| CN1779445A (en) * | 2004-11-26 | 2006-05-31 | 清华同方威视技术股份有限公司 | Shutter structure of open and closed radioactive imaging checking system on train |
| CN202142310U (en) * | 2011-03-10 | 2012-02-08 | 中国原子能科学研究院 | Beam shutter used for single event effect ground accelerator simulation test |
Non-Patent Citations (2)
| Title |
|---|
| 利用重离子束开展半导体器件单粒子效应的探讨;刘杰等;《原子能科学技术》;19970531;第31卷(第3期);278-283 * |
| 贺朝会等.SRAM重离子微束单粒子效应实验研究.《中国科协2005年学术年会论文集》.2005,662-667. * |
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