CN107612356A - A kind of grided electron gun power supply - Google Patents
A kind of grided electron gun power supply Download PDFInfo
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- CN107612356A CN107612356A CN201710949894.2A CN201710949894A CN107612356A CN 107612356 A CN107612356 A CN 107612356A CN 201710949894 A CN201710949894 A CN 201710949894A CN 107612356 A CN107612356 A CN 107612356A
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Abstract
The present invention relates to a kind of grided electron gun power supply, including pulse transformer, the secondary windings of pulse transformer forms three secondary windings by the way of three-line parallel coiling, respectively negative electrode winding, Filament Winding, grid winding, the high-pressure side of three secondary windings is connected with the negative electrode, filament, grid of grided electron gun respectively, and the low-pressure end of three secondary windings is connected with filament supply, grid bias power supply and grid-control power supply respectively；Filament supply is powered by Filament Winding and negative electrode winding for filament heating, grid bias power supply and grid-control power supply form bias and grid pulse respectively on negative electrode winding and grid winding, it is added on the negative electrode and grid of high-pressure side, gate bias and control pulse are formed between negative electrode and grid, realizes the output control of electron gun.The high-voltage output end of the present invention is the output of transformer, and high pressure end equipment and element are few, and anti-sparking ability is strong, and reliability is high；Filament supply and grid-control power work in ground potential, control with it is easy for installation.
Description
Technical field
The present invention relates to the Power Management Design of electron accelerator electron gun, and in particular to a kind of grid-control with anti-sparking ability
Electron gun power supply.
Background technology
Electron accelerator is widely used in the application such as medical and industrial circle, treatment of cancer, industrial detection, sterilization and got over
Come more extensive.Electron gun is the particle source of electron accelerator.It can launching electronics to accelerating cavity accelerate, improve energy.Grid-control
Electron gun controls the transmitting of electron gun using grid impulse, can easily adjust the size and width of electron gun emission current,
It is that accelerator accurately controls the essential equipment of dosage.Electron gun power supply is that grided electron gun is capable of the keys of launching electronics and drawn
Go out equipment.The stability that it works directly affects the output performance of accelerator.
At present, the grided electron gun power supply commonly used both at home and abroad, typically using high direct voltage, the mode of operation of pulse grid-control.
High direct voltage is added on gun cathode using high voltage isolating transformer, filament supply, grid bias power supply, gate pulse power supply are floating
Work in high pressure, output pulse is controlled using optical fiber.Electron gun is often struck sparks at work, to floating in high pressure
The part such as filament supply, grid bias power supply, gate pulse power supply and fiber optic switching module easily break, cause fault rate high, maintenance
Inconvenience.
Grided electron gun power supply easily causes the damage of high-pressure side component equipment when electron gun is struck sparks, and causes output not
Normally, equipment downtime.And power supply architecture is complicated, control accuracy is low.
The content of the invention
The defects of it is an object of the invention to for prior art, there is provided one kind is simple in construction, anti-sparking ability is strong, installation
Convenient grided electron gun power supply.
Technical scheme is as follows：A kind of grided electron gun power supply, including pulse transformer, the pulse transformer
Secondary windings three secondary windings, respectively negative electrode winding, Filament Winding, grid are formed by the way of three-line parallel coiling
Winding, the high-pressure side of three secondary windings are connected with the negative electrode, filament, grid of grided electron gun respectively, described three
The low-pressure end of secondary windings is connected with filament supply, grid bias power supply and grid-control power supply respectively；Filament supply passes through Filament Winding
Powered with negative electrode winding for filament heating, grid bias power supply and grid-control power supply form bias respectively on negative electrode winding and grid winding
And grid pulse, it is added on the negative electrode and grid of high-pressure side, gate bias and control pulse is formed between negative electrode and grid, is realized
The output control of electron gun.
Further, grided electron gun power supply as described above, wherein, in the secondary windings low-pressure end of the pulse transformer
Provided with low-pressure end pulsed capacitance；Secondary winding high voltage end is provided with high-pressure side pulsed capacitance.
Further, grided electron gun power supply as described above, wherein, described Filament Winding and negative electrode winding respectively with lamp
The primary side of silk step-down transformer is connected, and the filament of the secondary end connection grided electron gun of filament step-down transformer, passes through lamp
Powered after silk step-down transformer decompression for filament heating.
Beneficial effects of the present invention are as follows：The present invention is by pulse transformer by pulse boosting caused by pulse generating unit
To the operating voltage of electron gun.The secondary windings of pulse transformer uses three-line parallel coiling, is supplied filament using secondary windings
Electricity, bias and grid pulse signal are sent to high-pressure side from low-pressure end.High voltage pulse transformer both produces high-voltage pulse, while again
Play a part of the low-pressure end of high_voltage isolation, filament supply and grid-control power work in transformer secondary output, that is, ground potential end,
Due to the buffer action of Transformer Winding, power supply is not influenceed by electron gun sparking, therefore working stability, easy to control.This electricity
The high-voltage output end in source is the output of transformer, and high pressure end equipment and element are few, and anti-sparking ability is strong, and reliability is high, wiring letter
It is single；Filament supply and grid-control power work in ground potential, control with it is easy for installation.Equipment cost is low, easy to maintenance.
Brief description of the drawings
Fig. 1 is one of the present invention gate modulation structure schematic diagram with the specific embodiment of filament step-down transformer；
Fig. 2 is the gate modulation structure schematic diagram of the specific embodiment without filament step-down transformer of the present invention.
In figure, 1 is pulse transformer primary winding, and 2 be pulse transformer core, and 3 be low-pressure end pulsed capacitance, and 4 be arteries and veins
Transformer secondary output three winding, respectively grid winding, Filament Winding, negative electrode winding are rushed, 5 be high-pressure side pulsed capacitance, and 6 be grid-control
The input of power supply, 7 be the input of filament supply, and 8 be the input of grid bias power supply, and 9 be electron gun filament, and 10 be electron gun
Negative electrode, 11 be electron gun grid, and 12 be electron gun anode, and 13 be electron gun, and 14 be filament step-down transformer.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Grided electron gun power supply architecture provided by the invention, including pulse transformer, pulse is sent out by pulse transformer
Pulse boosting caused by generating apparatus to electron gun operating voltage.The secondary windings of the pulse transformer using three-line parallel around
The mode of system forms three secondary windings, respectively negative electrode winding, Filament Winding, grid winding, three secondary windings
High-pressure side is connected with the negative electrode, filament, grid of grided electron gun respectively, the low-pressure ends of three secondary windings respectively with lamp
Silk power supply, grid bias power supply are connected with grid-control power supply；Filament supply is powered by Filament Winding and negative electrode winding for filament heating,
Grid bias power supply and grid-control power supply form bias and grid pulse respectively on negative electrode winding and grid winding, are added to the moon of high-pressure side
On pole and grid, gate bias and control pulse are formed between negative electrode and grid, realizes the output control of electron gun.
Embodiment 1
As shown in figure 1, in the input pulse voltage of pulse transformer primary winding 1, the secondary three winding 4 of pulse transformer divides
High-voltage pulse is not exported.The secondary windings low-pressure end of pulse transformer is provided with low-pressure end pulsed capacitance 3, and secondary winding high voltage end is set
There is high-pressure side pulsed capacitance 5, balance three-winding voltage using low-pressure end pulsed capacitance and high-pressure side pulsed capacitance, be added to electronics
On the negative electrode 10 of rifle, as the extraction high pressure of electron gun, accelerating tube is injected into.
Three secondary winding high voltage ends of the pulse transformer negative electrode 10 with grided electron gun, filament 9, the phase of grid 11 respectively
Even, the low-pressure end of winding connects filament supply 7, grid bias power supply 8 and grid-control power supply 6 respectively, filament supply 7 by Filament Winding and
Negative electrode winding is powered for the primary side of electron gun filament step-down transformer 14, is the heating power supply of filament 9 by decompression；Grid bias power supply
8 and grid-control power supply 6 be connected on the low-pressure end of pulse transformer secondary winding, grid-control winding and negative electrode winding formed bias and
Grid pulse, be added to by Transformer Winding on the gun cathode 10 and grid 11 of high-pressure side, negative electrode 10 and grid 11 it
Between formed gate bias and control pulse, reach control electron gun output purpose.
The high-pressure side of this power supply, without other any power components, subtracts except equalizing capacitance 5 and filament step-down transformer 14
Lack because the probability of component wear caused by electron gun sparking.The secondary windings of pulse transformer both produces high voltage pulse, again
Filament and gate control signal are individually transmitted by each winding, serve the purpose of isolation high pressure and transmission signal.
Embodiment 2
The present invention also has another design method, is exactly that secondary end is not provided with filament step-down transformer, Filament Winding and the moon
Pole winding is directly connected with the filament of grided electron gun, as shown in Fig. 2 directly being supplied using pulse transformer winding for filament
Electricity, other circuit structures and operation principle are identical with embodiment 1.This working method, filament step-down transformer is eliminated,
The part of the high-pressure side of power supply is further reduced, provided conveniently for stabilization of equipment performance and maintenance, while it is difficult to reduce making
Degree.
The present invention cannot only be applied to grided electron gun, be also applied on diode gun.When being applied to two poles
When on electron gun, it is only necessary to by grid winding and negative electrode winding respectively in the low-pressure end and high-pressure side short circuit of transformer.In high pressure
End, the shorting stub of two windings are connected on the cathode connection end of electron gun, and the filament that Filament Winding output connects diode gun connects
Line end；In low-pressure end, the even shorting stub of a winding and Filament Winding line are respectively connected to two output ends of filament supply, i.e., it is real
Now can electron gun filament power supply, again produce high-voltage pulse draw electronics function.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if belonging to the model of the claims in the present invention and its equivalent technology to these modifications and variations of the present invention
Within enclosing, then the present invention is also intended to comprising including these changes and modification.
Claims (3)
- A kind of 1. grided electron gun power supply, it is characterised in that：Including pulse transformer, the secondary windings of the pulse transformer is adopted Three secondary windings (4), respectively negative electrode winding, Filament Winding, grid winding are formed with the mode of three-line parallel coiling, it is described The high-pressure side of three secondary windings is connected with the negative electrode (10), filament (9), grid (11) of grided electron gun respectively, and described three The low-pressure end of individual secondary windings is connected with filament supply (7), grid bias power supply (8) and grid-control power supply (6) respectively；Filament supply (7) it is filament (9) heating power supply by Filament Winding and negative electrode winding, grid bias power supply (8) and grid-control power supply (6) are in negative electrode winding With formation bias and grid pulse respectively on grid winding, it is added on the negative electrode (10) and grid (11) of high-pressure side, in negative electrode (10) gate bias and control pulse are formed between grid (11), realizes the output control of electron gun.
- 2. grided electron gun power supply as claimed in claim 1, it is characterised in that：It is low in the secondary windings of the pulse transformer Pressure side is provided with low-pressure end pulsed capacitance (3)；Secondary winding high voltage end is provided with high-pressure side pulsed capacitance (5).
- 3. grided electron gun power supply as claimed in claim 1 or 2, it is characterised in that：Described Filament Winding and negative electrode winding The primary side with filament step-down transformer (14) is connected respectively, the secondary end connection gate-controlled electron of filament step-down transformer (14) The filament (9) of rifle, powered after being depressured by filament step-down transformer for filament heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949894.2A CN107612356A (en) | 2017-10-13 | 2017-10-13 | A kind of grided electron gun power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949894.2A CN107612356A (en) | 2017-10-13 | 2017-10-13 | A kind of grided electron gun power supply |
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| CN107612356A true CN107612356A (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710949894.2A Pending CN107612356A (en) | 2017-10-13 | 2017-10-13 | A kind of grided electron gun power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801781A (en) * | 2019-03-14 | 2019-05-24 | 安徽华东光电技术研究所有限公司 | A kind of medical grid-control rifle power supply modulator transformer and preparation method thereof |
| CN110690090A (en) * | 2019-10-10 | 2020-01-14 | 清华大学 | Grid-controlled electron gun power supply |
| CN112582241A (en) * | 2020-12-14 | 2021-03-30 | 中国科学院近代物理研究所 | Power supply device for grid-control electron gun, electron gun system and power supply method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547426A (en) * | 2003-12-12 | 2004-11-17 | �Ϻ���ͨ��ѧ | Electron gun for electron linear accelerator |
| CN101807506A (en) * | 2010-04-20 | 2010-08-18 | 江苏海明医疗器械有限公司 | Control method and system for electron gun to emit beams in medical linear accelerator |
| CN203590580U (en) * | 2013-09-18 | 2014-05-07 | 清华大学 | X-ray device and CT equipment having same |
-
2017
- 2017-10-13 CN CN201710949894.2A patent/CN107612356A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547426A (en) * | 2003-12-12 | 2004-11-17 | �Ϻ���ͨ��ѧ | Electron gun for electron linear accelerator |
| CN101807506A (en) * | 2010-04-20 | 2010-08-18 | 江苏海明医疗器械有限公司 | Control method and system for electron gun to emit beams in medical linear accelerator |
| CN203590580U (en) * | 2013-09-18 | 2014-05-07 | 清华大学 | X-ray device and CT equipment having same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801781A (en) * | 2019-03-14 | 2019-05-24 | 安徽华东光电技术研究所有限公司 | A kind of medical grid-control rifle power supply modulator transformer and preparation method thereof |
| CN109801781B (en) * | 2019-03-14 | 2021-07-27 | 安徽华东光电技术研究所有限公司 | Medical grid-controlled gun power supply modulator transformer and manufacturing method thereof |
| CN110690090A (en) * | 2019-10-10 | 2020-01-14 | 清华大学 | Grid-controlled electron gun power supply |
| CN112582241A (en) * | 2020-12-14 | 2021-03-30 | 中国科学院近代物理研究所 | Power supply device for grid-control electron gun, electron gun system and power supply method |
| CN112582241B (en) * | 2020-12-14 | 2023-03-14 | 中国科学院近代物理研究所 | Power supply device for grid-control electron gun, electron gun system and power supply method |
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