CN106231777A - A kind of signal source of high stability of superconducting cyclotron - Google Patents
A kind of signal source of high stability of superconducting cyclotron Download PDFInfo
- Publication number
- CN106231777A CN106231777A CN201610616930.9A CN201610616930A CN106231777A CN 106231777 A CN106231777 A CN 106231777A CN 201610616930 A CN201610616930 A CN 201610616930A CN 106231777 A CN106231777 A CN 106231777A
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- frequency
- signal source
- 80mhz
- 400mhz
- high stability
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- 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
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- 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
- H05H7/02—Circuits or systems for supplying or feeding radio-frequency energy
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The present invention relates to the signal source of high stability of a kind of superconducting cyclotron, 80MHz times of frequency module that described signal source includes being sequentially connected with, 80MHz frequency stabilization loop module, 400MHz times of frequency module, 400MHz frequency stabilization loop.The low cost of this signal source, noise are little, and frequency stability is high, reduce the sliding phase problem caused due to frequency stability in superconducting cyclotron.The frequency-doubling method that the present invention is carried out by the device property of the distinctive avalanche region of diode and audion, by frequency-locked loop in the optimization that signal source is exported phase noise, by the agitator frequency locking of 400MHz to from 10MHz crystal oscillator frequency multiplication to the signal of 400MHz, thus improve the phase noise performance at signal low bandwidth near DC, thus the frequency stability improving a reference source can reach 10‑7。
Description
Technical field
Present invention relates particularly to the signal source of high stability of a kind of superconducting cyclotron, belong to superconducting cyclotron skill
Art field.
Background technology
In superconducting cyclotron, the short-term stability of frequency is mutually relevant with the cunning in particle accelerating process, wherein, and particle
The phase place of sliding phase ties up to the integration cunning that radius is R position and is mutually with the pass in magnetic field with electric field
And Δ B (R) therein is and true field Bs(R) difference, Δ ω is to corresponding to BsThe difference on the frequency of frequencies omega
Value, Δ E is the corresponding maximum energy increased often enclosed.When stable magnetic field, accelerator frequency degree of stability to reach 10-7,
Can ensure that the cunning that high frequency causes is less than 5 ° mutually.The frequency stability of existing common crystals is 10-5.The method is effectively reducing
The degree of stability of signal source is improve in the case of cost.But, along with the development of new technique, it is badly in need of the signal of more high stability
Source.
Summary of the invention
What the crystal oscillator of existing cyclotron used is 10 for frequency stability-5400MHz signal source be DDS provide
Standard time clock, proposes a kind of scheme, on this basis by frequency multiplication and the method for frequency locking, by the agitator frequency locking of 400MHz to one
Individual from 10MHz crystal oscillator frequency multiplication to the signal of 400MHz.Thus improve the phase noise performance at the low bandwidth of signal, thus carry
The frequency stability of high a reference source can reach 10-7。
Concrete, the present invention provides the signal source of high stability of a kind of superconducting cyclotron, described signal source to include depending on
The 80MHz times of frequency module (1) of secondary connection, 80MHz frequency stabilization loop module (2), 400MHz times of frequency module (3), 400MHz frequency stabilization ring
Road (4).
Further, the signal source of high stability of superconducting cyclotron as above, 80MHz times of frequency module (1),
Including the pulse-generating circuit being sequentially connected with, 80MHz matched filtering circuit, 80MHz amplifying circuit, 80MHz matched filtering circuit.
Further, the signal source of high stability of superconducting cyclotron as above, described pulse-generating circuit be by
Diode and audion two subharmonic frequency multiplication realize.
Further, the signal source of high stability of superconducting cyclotron as above, described 80MHz frequency stabilization loop mould
Block (2), the loop being made up of the descriminator being linked in sequence, low pass filter and 80MHz crystal oscillator.
Further, the signal source of high stability of superconducting cyclotron as above, described 400MHz times of frequency module
(3), it is sequentially connected with is formed by No. 5 doubler, 400MHz matched filtering amplifying circuit, 400MHz matched filtering devices.
Further, the signal source of high stability of superconducting cyclotron as above, described 400MHz frequency stabilization loop (4)
It is sequentially connected with the loop formed by phase discriminator, low pass filter and 400MHzDRO resonant oscillator.
Further, the signal source of high stability of superconducting cyclotron as above, described 400MHzDRO resonance oscillations
Device is as the audion low noise oscillator of resonator cavity by DRO.
The signal source of high stability of a kind of superconducting cyclotron that the present invention provides, peculiar by diode and audion
The frequency-doubling method that carries out of the device property of avalanche region, by frequency-locked loop in the optimization that signal source is exported phase noise.
By the agitator frequency locking of 400MHz to from 10MHz crystal oscillator frequency multiplication to the signal of 400MHz.Thus it is attached at DC to improve signal
The near phase noise performance at low bandwidth, thus the frequency stability improving a reference source can reach 10-7.The one-tenth of this signal source
This is low, noise is little, and frequency stability is high, reduces the sliding phase problem caused due to frequency stability in superconducting cyclotron.
Accompanying drawing explanation
Fig. 1 is the system schematic of the signal source of high stability of superconducting cyclotron of the present invention.
Detailed description of the invention
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
A kind of module being improved frequency stability by frequency multiplication and phase-locked loop in superconducting cyclotron, is mainly comprised
Module is as it is shown in figure 1, be made up of four parts: be respectively 80MHz times of frequency module (1), 80MHz frequency stabilization loop module (2), 400MHz
Times frequency module (3), 400MHz frequency stabilization loop (4).
The signal that wherein times frequency module of 80MHz is mainly exported by the reference crystal oscillator of the high stability of 10MHz passes through pulse
Producing circuit, this circuit is shaped to broad pulse circuit by one via diode, then carries out burst pulse shaping via audion,
Ensured length and the size of circuit pulse by the parameter of regulation circuit, outfan connects 80MHz matched filtering circuit to arteries and veins
The frequency spectrum of punching carries out extracting and impedance matching, then connects 80MHz amplifying circuit and previous stage is extracted through chopping
Signal be amplified, the output of amplifying circuit connects 80MHz matched filtering circuit, and the output of 80MHz matched filtering circuit is made
Output for 80MHz times of frequency module.
The output that input is upper level of 80MHz frequency stabilization loop module, the output of the crystal oscillator of this signal and 80MHz
Controlled the output frequency of the crystal oscillator of 80MHz by low pass filter after carrying out phase demodulation.
The mode of times frequency module employing nonlinear transmission line of 400MHz is as No. five doubler, then through 400MHz's
Matched filtering amplifying circuit, then via 400MHz matched filtering as the output of this module.
The output of 400MHz times of frequency module and 400MHzDRO resonant oscillator are as the input of phase discriminator, and phase discriminator
Export the output that by low pass filter, the signal controlled is controlled 400MHzDRO resonant oscillator.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments and modification to the present invention belong to the model of the claims in the present invention and equivalent technology thereof
Within enclosing, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. the signal source of high stability of a superconducting cyclotron, it is characterised in that:
80MHz times of frequency module (1) that described signal source includes being sequentially connected with, 80MHz frequency stabilization loop module (2), 400MHz frequency multiplication
Module (3), 400MHz frequency stabilization loop (4).
2. the signal source of high stability of superconducting cyclotron as claimed in claim 1, it is characterised in that:
80MHz times of frequency module (1), put including the pulse-generating circuit being sequentially connected with, 80MHz matched filtering circuit, 80MHz
Big circuit, 80MHz matched filtering circuit.
3. the signal source of high stability of superconducting cyclotron as claimed in claim 2, it is characterised in that:
Described pulse-generating circuit is realized by diode and audion two subharmonic frequency multiplication, and this circuit passes through diode shaping
Become broad pulse, then carry out burst pulse shaping via audion, then by the parameter of regulation circuit ensure the length of circuit pulse with
And size.
4. the signal source of high stability of superconducting cyclotron as claimed in claim 1, it is characterised in that:
Described 80MHz frequency stabilization loop module (2), is by the descriminator being linked in sequence, low pass filter and 80MHz crystal oscillation
The loop of device composition.
5. the signal source of high stability of superconducting cyclotron as claimed in claim 1, it is characterised in that:
Described 400MHz times of frequency module (3), is by No. 5 doubler, 400MHz matched filtering amplifying circuit, 400MHz matched filterings
Device is sequentially connected with composition.
6. the signal source of high stability of superconducting cyclotron as claimed in claim 1, it is characterised in that:
Described 400MHz frequency stabilization loop (4) is to be sequentially connected with group by phase discriminator, low pass filter and 400MHzDRO resonant oscillator
The loop become.
7. the signal source of high stability of superconducting cyclotron as claimed in claim 6, it is characterised in that:
Described 400MHzDRO resonant oscillator is as the audion low noise oscillator of resonator cavity by DRO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616930.9A CN106231777B (en) | 2016-07-29 | 2016-07-29 | A kind of signal source of high stability of superconducting cyclotron |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610616930.9A CN106231777B (en) | 2016-07-29 | 2016-07-29 | A kind of signal source of high stability of superconducting cyclotron |
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| CN106231777A true CN106231777A (en) | 2016-12-14 |
| CN106231777B CN106231777B (en) | 2019-01-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650771A (en) * | 2018-07-12 | 2018-10-12 | 北京航天广通科技有限公司 | Self-excitation stable control method, system and the storage medium of accelerator superconductor cavity |
| CN109561567A (en) * | 2018-11-27 | 2019-04-02 | 中国原子能科学研究院 | A kind of high power high stability varying load high frequency acceleration system |
| CN109893777A (en) * | 2019-02-26 | 2019-06-18 | 中国原子能科学研究院 | Phase detector and proton beam phase stabilization device comprising the phase detector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240993B (en) * | 2020-10-14 | 2021-07-20 | 中国原子能科学研究院 | Evaluation system and method for compact cyclotron magnetic field stability measurement |
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| CN101931404A (en) * | 2010-06-21 | 2010-12-29 | 胡伟东 | Phase lock technique-based microwave carbon testing frequency synthesizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650771A (en) * | 2018-07-12 | 2018-10-12 | 北京航天广通科技有限公司 | Self-excitation stable control method, system and the storage medium of accelerator superconductor cavity |
| CN109561567A (en) * | 2018-11-27 | 2019-04-02 | 中国原子能科学研究院 | A kind of high power high stability varying load high frequency acceleration system |
| CN109893777A (en) * | 2019-02-26 | 2019-06-18 | 中国原子能科学研究院 | Phase detector and proton beam phase stabilization device comprising the phase detector |
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| Publication number | Publication date |
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| CN106231777B (en) | 2019-01-29 |
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