CN204408735U - A kind of accelerating electrode of electrostatic accelerator - Google Patents
A kind of accelerating electrode of electrostatic accelerator Download PDFInfo
- Publication number
- CN204408735U CN204408735U CN201420780199.XU CN201420780199U CN204408735U CN 204408735 U CN204408735 U CN 204408735U CN 201420780199 U CN201420780199 U CN 201420780199U CN 204408735 U CN204408735 U CN 204408735U
- Authority
- CN
- China
- Prior art keywords
- accelerating
- electrostatic accelerator
- cone
- battery lead
- lead plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Particle Accelerators (AREA)
Abstract
The utility model relates to a kind of parts of electrostatic accelerator.For solving the accelerated particle loss that the braking measure of existing electrostatic accelerator accelerating tube " electronic load " causes, simplify accelerating structure, reduce accelerating structure cost, the utility model provides a kind of accelerating electrode of electrostatic accelerator.The accelerating electrode of this electrostatic accelerator is made up of a series of battery lead plate, described a series of battery lead plate comprises conical surface battery lead plate, described conical surface battery lead plate is with cone structure, and the cone angle place of described cone structure has electrode hole, and described cone structure is taper seat, elliptic cone or pyramidal surface.The accelerating electrode of electrostatic accelerator of the present utility model can provide focusing force to the line that forward accelerates, and provides debunching force, while suppression " electronic load " and " full voltage effect ", avoid the loss of accelerated particle to the line oppositely accelerated; Its accelerating structure is comparatively simple simultaneously, reduces production or the improvement cost of accelerating structure, and can not form adverse effect to electrostatic accelerator.
Description
Technical field
The utility model relates to a kind of parts of electrostatic accelerator, particularly a kind of accelerating electrode of electrostatic accelerator.
Background technology
Electrostatic accelerator is a kind of accelerator of classics, is widely used in the fields such as nuclear physics experiment, ion implantation, material analysis and material irradiation.First electrostatic accelerator produces electrostatic high-pressure by high voltage source, and is loaded into by high pressure on the accelerating structures such as current in electrostatic accelerating tube, and ion source is accelerated to required energy by the electrostatic high-pressure in accelerating tube after producing and drawing ion or electronics.Electrostatic accelerating structure is the critical component of electrostatic accelerator.
The accelerating voltage that electrostatic accelerator can provide can not be very high, is up to tens MV.Trace it to its cause, except higher electrostatic high-pressure power-supply device is huge and except development difficulty, the very important point is that current in electrostatic accelerating tube exists a kind of full voltage effect.Full voltage effect refers to that total withstand voltage of electrostatic accelerator accelerating tube is less than the withstand voltage sum of segmentation accelerating tube, namely accelerating tube withstand voltage not increasing with its length and linearly increase.
Full voltage effect Producing reason is after accelerating tube making alive, always there will be a small amount of electronics or ion for some reason in accelerating tube, gets on electrode and can sputter more secondary electron and ion after they are accelerated; Then secondary electron and ion are accelerated again, then bombard other electrode, produce again more electronics and ion.After the energy of projectile reaches a certain threshold value, there is the increase of avalanche type in secondary electron immediately, and then cause incomplete breakdown in accelerating tube.In addition, the a large amount of secondary electrons produced form reversed electron flow in accelerating tube, produce reverse voltage, greatly counteract the forward voltage on accelerating tube through accelerating tube divider resistance, thus whole accelerating tube voltage is reduced, form totally unfavorable " electronic load " effect.
Traditional accelerating electrode is generally writing board shape, in order to suppress " electronic load " in accelerating tube, reduce " full voltage effect ", usually adopt small-bore accelerating tube, tiltedly field accelerating tube in this area and on accelerating tube, increase the measures such as the magnetic field that suppresses secondary electron, Zhi Chang small-bore accelerating tube is welded as adopted metal-ceramic, oblique field accelerating tube installs the modes such as permanent magnet tackled, all comparatively effectively can suppress electronic load.
But the employing of above-mentioned measure can bring the loss of accelerated particle, and make electrostatic accelerator accelerating structure complicated, some adverse effects are formed to electrostatic accelerator, also improves the cost of accelerating structure simultaneously.
Utility model content
For solving the accelerated particle loss that the braking measure of existing electrostatic accelerator accelerating tube " electronic load " causes, simplify accelerating structure, avoid forming adverse effect to electrostatic accelerator, and reduce accelerating structure cost, the utility model provides a kind of accelerating electrode of electrostatic accelerator.
The accelerating electrode of this electrostatic accelerator is made up of a series of battery lead plate, described a series of battery lead plate comprises conical surface battery lead plate, described conical surface battery lead plate is with cone structure, the cone angle place of described cone structure has electrode hole, described cone structure is taper seat, elliptic cone or pyramidal surface, coning angle >=90 ° of described taper seat place circular cone, smallest circle cone angle >=90 ° of described elliptic cone place elliptic cone, each side of described pyramidal surface and acute angle >=45 ° of line kinematic axis.
Every sheet conical surface battery lead plate of described a series of battery lead plate, its cone structure can be selected arbitrarily in taper seat, elliptic cone or pyramidal surface.
Described pyramidal surface is preferably triangular prism method or rectangular pyramid face.
When described cone structure is pyramidal surface, each side of pyramidal surface can be different from the acute angle of line kinematic axis.
The accelerating electrode of electrostatic accelerator of the present utility model can be used for replacing plate, cylindrical or the spherical accelerating electrode of electrostatic accelerator.
The utility model have employed the electrostatic accelerator accelerating electrode with cone structure, although it is more weak to the focussing force of accelerated line, obvious to the focusing of the electronics and ion that cause full voltage effect, blooming effect.For with the homodromous secondary electron of accelerated current or ion, because its energy is low, stronger focussing force can be subject to, therefore the cascade collision between multiple electrode can be inhibit to sputter the avalanche effect caused away from electrode after accelerating.For with the heterodromous secondary electron of accelerated current or ion, because its energy is low, stronger blooming effect can be subject to, therefore through accelerate after can be tackled by electrode very soon; Also because energy is low, thus the secondary electron sputtered when it is blocked or ion less, thus inhibit avalanche effect and " electronic load " effect.
The accelerating electrode of electrostatic accelerator of the present utility model have employed conical surface battery lead plate, focusing force can be provided to the line that forward accelerates, there is provided debunching force to the line oppositely accelerated, while suppression " electronic load " and " full voltage effect ", avoid the loss of accelerated particle; Its accelerating structure is comparatively simple simultaneously, reduces production or the improvement cost of accelerating structure, and can not form adverse effect to electrostatic accelerator.
Accompanying drawing explanation
The accelerating electrode schematic diagram (taper seat battery lead plate) of Fig. 1 electrostatic accelerator of the present utility model.
Reference numeral: 1. taper seat battery lead plate, 2. taper seat battery lead plate 1/4 cuts open remainder, and 3. taper seat battery lead plate 1/2 cuts open remainder.
Embodiment
Below in conjunction with accompanying drawing, execution mode of the present utility model is described further.
Embodiment 1
A kind of accelerating electrode of electrostatic accelerator, be made up of a series of battery lead plate, comprise 10 conical surface battery lead plates, be divided into two sections of settings, 5 every section, described conical surface battery lead plate is with cone structure, and the cone angle place of described cone structure has electrode hole, described cone structure is taper seat, and the coning angle of described taper seat place circular cone is 90 °.
Respectively the proton beam of 50keV is accelerated at the same conditions with the plate electrode that above-mentioned accelerating electrode is substantially identical with structure.Result shows: the proton beam adopting above-mentioned accelerating electrode to accelerate, completely by accelerating sections, does not lose; And the proton beam adopting plate electrode to accelerate is by last 2 plate electrode sheet partial interception, lose, prove that accelerating electrode of the present utility model has good focussing force, the loss of accelerated particle can be avoided.Meanwhile, " electronic load " and " full voltage effect " have also been obtained good suppression.
Embodiment 2
A kind of accelerating electrode of electrostatic accelerator, be made up of a series of battery lead plate, comprise 12 conical surface battery lead plates, described conical surface battery lead plate is with cone structure, the cone angle place of described cone structure has electrode hole, described cone structure is rectangular pyramid face, and each side in described rectangular pyramid face and the acute angle of line kinematic axis are 60 °.
Respectively the proton beam of 50keV is accelerated at the same conditions with the plate electrode that above-mentioned accelerating electrode is substantially identical with structure.Result shows: the proton beam adopting above-mentioned accelerating electrode to accelerate, completely by accelerating sections, does not lose; And the proton beam adopting plate electrode to accelerate is by last 3 plate electrode sheet partial interception, lose, prove that accelerating electrode of the present utility model has good focussing force, the loss of accelerated particle can be avoided.Meanwhile, " electronic load " and " full voltage effect " have also been obtained good suppression.
With cone structure adopt taper seat unlike, the particle beams spot after adopting the accelerating electrode of pyramidal surface to accelerate is the shape similar with pyramid section polygon, instead of circular.
Claims (3)
1. the accelerating electrode of an electrostatic accelerator, it is characterized in that: the accelerating electrode of this electrostatic accelerator is made up of a series of battery lead plate, described a series of battery lead plate comprises conical surface battery lead plate, described conical surface battery lead plate is with cone structure, the cone angle place of described cone structure has electrode hole, described cone structure is taper seat, elliptic cone or pyramidal surface, coning angle >=90 ° of described taper seat place circular cone, smallest circle cone angle >=90 ° of described elliptic cone place elliptic cone, each side of described pyramidal surface and acute angle >=45 ° of line kinematic axis.
2. the accelerating electrode of electrostatic accelerator as claimed in claim 1, is characterized in that: described pyramidal surface is triangular prism method or rectangular pyramid face.
3. the accelerating electrode of electrostatic accelerator as claimed in claim 1, it is characterized in that: when described cone structure is pyramidal surface, each side of pyramidal surface can be different from the acute angle of line kinematic axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420780199.XU CN204408735U (en) | 2014-12-11 | 2014-12-11 | A kind of accelerating electrode of electrostatic accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420780199.XU CN204408735U (en) | 2014-12-11 | 2014-12-11 | A kind of accelerating electrode of electrostatic accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204408735U true CN204408735U (en) | 2015-06-17 |
Family
ID=53432561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420780199.XU Withdrawn - After Issue CN204408735U (en) | 2014-12-11 | 2014-12-11 | A kind of accelerating electrode of electrostatic accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204408735U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582230A (en) * | 2014-12-11 | 2015-04-29 | 中国原子能科学研究院 | Accelerating electrode for electrostatic accelerator |
| CN110072325A (en) * | 2019-05-29 | 2019-07-30 | 中国科学院合肥物质科学研究院 | A kind of high current ion high voltage static accelerating tube |
-
2014
- 2014-12-11 CN CN201420780199.XU patent/CN204408735U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582230A (en) * | 2014-12-11 | 2015-04-29 | 中国原子能科学研究院 | Accelerating electrode for electrostatic accelerator |
| CN110072325A (en) * | 2019-05-29 | 2019-07-30 | 中国科学院合肥物质科学研究院 | A kind of high current ion high voltage static accelerating tube |
| CN110072325B (en) * | 2019-05-29 | 2021-06-18 | 中国科学院合肥物质科学研究院 | High-voltage electrostatic accelerating tube for high-current ions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204408735U (en) | A kind of accelerating electrode of electrostatic accelerator | |
| CN207678062U (en) | A kind of electron accelerator | |
| CN104582230B (en) | A kind of acceleration electrode of electrostatic accelerator | |
| Wang et al. | Design of triode extraction system for a dual hollow cathode ion source | |
| CN108167149B (en) | A kind of design method of structure for enhancing magnetic focusing type hall thruster ion beam focusing and the structure | |
| CN203761670U (en) | Neutron generator | |
| Sang et al. | Characteristics of nanosecond pulse needle-to-plane discharges at high pressure: A particle-in-cell Monte Carlo collision simulation | |
| Hosseinzadeh et al. | Numerical simulation for optimization of multipole permanent magnets of multicusp ion source | |
| Kim et al. | An EBIS system for rare isotope science project in Korea | |
| CN103068140B (en) | Electronic load restraining type high-voltage accelerating tube | |
| CN203039993U (en) | Electron load suppression type high voltage accelerating tube | |
| CN104091746A (en) | Electrode used for ion injection equipment and ion injection equipment | |
| Martin et al. | Critical current operation of the optimized self-magnetic-pinch radiographic diode | |
| CN204518206U (en) | The non-linear magnet of the dizzy process of a kind of permanent magnetism bundle | |
| CN109379830B (en) | Synchrotron and injection device and injection method thereof | |
| RU2651584C2 (en) | Electronic gun with field emission cathode | |
| CN104684238A (en) | Permanent magnet beam halo processing nonlinear magnet | |
| CN104717824A (en) | Beam halo treatment nonlinear magnet for accelerator | |
| CN205122532U (en) | A lens are referred to again in pulse for particle formation of image | |
| Zhao et al. | Scandate-added tungsten dispenser cathode fabrication for 220 GHz sheet beam traveling wave tube amplifier | |
| Ueno et al. | Emittance measurements of the J-PARC RF-driven H− ion source | |
| Murata et al. | Computer simulation of high brightness and high beam current electron gun for high-throughput electron beam lithography | |
| CN102629542B (en) | Electron source device for ultrafast electron diffraction and ultrafast electron microscope | |
| Hopkins | Slides for GEC workshop presentation by Mikhail Benilov. | |
| Papash et al. | Long term beam dynamics in ultra-low energy storage rings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150617 Effective date of abandoning: 20171121 |