CN101631422B - Synchrotron of asymmetrical magnetic focusing structure - Google Patents
Synchrotron of asymmetrical magnetic focusing structure Download PDFInfo
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- CN101631422B CN101631422B CN 200910000762 CN200910000762A CN101631422B CN 101631422 B CN101631422 B CN 101631422B CN 200910000762 CN200910000762 CN 200910000762 CN 200910000762 A CN200910000762 A CN 200910000762A CN 101631422 B CN101631422 B CN 101631422B
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Abstract
The invention relates to the technical field of design methods of the magnetic focusing structure of a charged particle synchrotron, in particular to a synchrotron of asymmetrical magnetic focusing structure. The synchrotron comprises a septum magnet introducing device (9), a pulse injection magnet (6), an internal target device (4), an electronic cooling device (5), a radio-frequency accelerating device (10), eight bending sections of the synchrotron (1-1 to 1-8) and eight straight sections of the synchrotron (2-1 to 2-8). Through a toroidal vacuum duct in which the charged particles run and a magnet element, an acceleration element, a beam diagnosis element, an implanting and exporting element and experimental platforms, which are arranged on the vacuum duct, the space of the synchrotron is effectively utilized, the nuclear physics and atomic physics experimental platforms are installed as much as possible and the manufacturing cost and installation size are reduced to the utmost.
Description
Technical field:
The present invention relates to a kind of method for designing technical field of charged particle synchrotron magnetic focusing structure, especially relate to a kind of synchrotron of asymmetric magnetic focusing structure.
Background technology:
Synchrotron is that a kind of charged particle is realized accumulation and the device that quickens on circular orbit, is widely used in nuclear physics, Atomic Physics experimental study and application study fields such as irradiation material, treatment of cancer.Known synchrotron all is the symmetrical loop configuration with several cycles.Charged particle is shuttling movement in the ring vaccum pipeline; Be arranged in the magnetically confined of generations such as dipolar magnet on the circular orbit, quadrupole magnet, six pole magnet and guiding the motion of charged particle line; Line is of different sizes at the synchrotron diverse location; Line size along every bit place on the synchrotron annular track is connected in turn, and has constituted synchrotron line envelope diagram.
Known synchrotron all is to be formed by connecting in several cycles, and each cycle all has identical line envelope diagram, and the line size is along the variation of synchrotron annular orbital period property.The shortcoming of this symmetry magnetic focusing structure is: the line on the synchrotron symmetric position is measure-alike, causes on the synchrotron symmetric position, can only arranging the element identical or approximate to the line dimensional requirement.For the synchrotron of symmetrical magnetic focusing structure, the line envelope of two long straight sections is identical, therefore can not well satisfy both demands simultaneously.This shortcoming causes the physics facility requirement that need satisfy with more straight sections, causes the synchrotron size to increase, and expenditure of construction improves.
Summary of the invention:
The synchrotron that the objective of the invention is to avoid the weak point of prior art and a kind of asymmetric magnetic focusing structure is provided efficiently solves the problem that exists in the prior art.
The object of the invention can be realized through adopting following technical scheme: the synchrotron of described asymmetric magnetic focusing structure, its characteristics are: described synchrotron includes introduces septum magnet device (9), pulse injection magnet (6), interior target assembly (4), electronic cooler (5), high frequency accelerator (10), eight synchrotron bending sections (1-1 to 1-8) and eight synchrotron straightways (2-1 to 2-8).
Described eight synchrotron bending sections (1-1 to 1-8) comprise the first synchrotron bending section (1-1), the second synchrotron bending section (1-2), the 3rd synchrotron bending section (1-3), the 4th synchrotron bending section (1-4), the 5th synchrotron bending section (1-5), the 6th synchrotron bending section (1-6), the 7th synchrotron bending section (1-7), the 8th synchrotron bending section (1-8), and the described first synchrotron bending section (1-1) includes two dipolar magnets (3-1,3-2); The second synchrotron bending section (1-2) includes two dipolar magnets (3-15,3-16); The 3rd synchrotron bending section (1-3) includes two dipolar magnets (3-13,3-14); The 4th synchrotron bending section (1-4) includes two dipolar magnets (3-11,3-12); The 5th synchrotron bending section (1-5) includes two dipolar magnets (3-9,3-10); The 6th synchrotron bending section (1-6) includes two dipolar magnets (3-7,3-8); The 7th synchrotron bending section (1-7) includes two dipolar magnets (3-5,3-6); The 8th synchrotron bending section (1-8) includes two dipolar magnets (3-3,3-4).
Described eight synchrotron straightways (2-1 to 2-8) comprise the first synchrotron straightway (2-1), the second synchrotron straightway (2-2), the 3rd synchrotron straightway (2-3), the 4th synchrotron straightway (2-4), the 5th synchrotron straightway (2-5), the 6th synchrotron straightway (2-6), the 7th synchrotron straightway (2-7), the 8th synchrotron straightway (2-8), and the described first synchrotron straightway (2-1) includes three quadrupole magnets (7-1,7-2,7-3) and three six pole magnets (8-1,8-2,8-3); The second synchrotron straightway (2-2) includes six quadrupole magnets (7-4,7-5,7-6,7-7,7-8,7-9); The 3rd synchrotron straightway (2-3) includes three quadrupole magnets (7-10,7-11,7-12) and three six pole magnets (8-10,8-11,8-12); The 5th synchrotron straightway (2-5) includes three quadrupole magnets (7-13,7-14,7-15) and three six pole magnets (8-7,8-8,8-9); The 6th synchrotron straightway (2-6) includes four quadrupole magnets (7-16,7-17,7-18,7-19); The 7th synchrotron straightway (2-7) includes three quadrupole magnets (7-20,7-21,7-22) and three six pole magnets (8-4,8-5,8-6).
Described introducing septum magnet device (9), pulse injection magnet (6) and electronic cooler (5) are arranged in the 6th synchrotron straightway (2-6); Target assembly (4) is arranged in the second synchrotron straightway (2-2) in described; Described high frequency accelerator (10) is arranged in eight synchrotron straightways (2-1 to 2-8), and it is single or a plurality of.
The synchrotron of described asymmetric magnetic focusing structure, it comprises that a charged particle operates in ring vaccum pipeline wherein, and is arranged in magnet device, acceleration components, beam diagnostics element, injection extraction elements and experiment porch on the circulating line.Effectively utilize the synchrotron space, nuclear physics as much as possible, Atomic Physics experiment porch are installed, reduce manufacturing cost and installation volume to greatest extent.
Description of drawings:
Fig. 1 is the synchrotron structural principle sketch map of most preferred embodiment of the present invention;
Fig. 2 is heavy ion beam current envelope diagram in the synchrotron of most preferred embodiment of the present invention.
Embodiment:
Do further to detail below in conjunction with the most preferred embodiment shown in the accompanying drawing:
See Fig. 1; The synchrotron of described asymmetric magnetic focusing structure, its characteristics are: described synchrotron includes introduces septum magnet device 9, pulse injection magnet 6, interior target assembly 4, electronic cooler 5, high frequency accelerator 10, eight synchrotron bending section 1-1 to 1-8 and eight synchrotron straightway 2-1 to 2-8.
Described eight synchrotron bending section 1-1 to 1-8 comprise the first synchrotron bending section 1-1, the second synchrotron bending section 1-2, the 3rd synchrotron bending section 1-3, the 4th synchrotron bending section 1-4, the 5th synchrotron bending section 1-5, the 6th synchrotron bending section 1-6, the 7th synchrotron bending section 1-7, the 8th synchrotron bending section 1-8, and the described first synchrotron bending section 1-1 includes the first dipolar magnet 3-1, the second dipolar magnet 3-2; The second synchrotron bending section 1-2 includes the 15 dipolar magnet 3-15, the 16 dipolar magnet 3-16; The 3rd synchrotron bending section 1-3 includes the 13 dipolar magnet 3-13, the 14 secondary magnet 3-14; The 4th synchrotron bending section 1-4 includes the 11 dipolar magnet 3-11, the 12 secondary magnet 3-12; The 5th synchrotron bending section 1-5 includes the 9th dipolar magnet 3-9, the tenth secondary magnet 3-10; The 6th synchrotron bending section 1-6 includes the 7th dipolar magnet 3-7, the 8th secondary magnet 3-8; The 7th synchrotron bending section 1-7 includes the 5th dipolar magnet 3-5, the 6th secondary magnet 3-6; The 8th synchrotron bending section 1-8 includes the 3rd dipolar magnet 3-3, the 4th dipolar magnet 3-4.
Described eight synchrotron straightway 2-1 to 2-8 comprise the first synchrotron straightway 2-1, the second synchrotron straightway 2-2, the 3rd synchrotron straightway 2-3, the 4th synchrotron straightway 2-4, the 5th synchrotron straightway 2-5, the 6th synchrotron straightway 2-6, the 7th synchrotron straightway 2-7, the 8th synchrotron straightway 2-8, and the described first synchrotron straightway 2-1 includes the first quadrupole magnet 7-1, the second quadrupole magnet 7-2, the 3rd quadrupole magnet 7-3 and the first six pole magnet 8-1, the second six pole magnet 8-2, the 3rd six pole magnet 8-3; The second synchrotron straightway 2-2 includes the 4th quadrupole magnet 7-4, the May 4th utmost point magnet 7-5, the 6th quadrupole magnet 7-6, the 7th quadrupole magnet 7-7, the 8th quadrupole magnet 7-8, the 9th quadrupole magnet 7-9; The 3rd synchrotron straightway 2-3 includes the tenth quadrupole magnet 7-10, the 11 quadrupole magnet 7-11, the 12 quadrupole magnet 7-12 and the tenth six pole magnet 8-10, the 11 six pole magnet 8-11, the 12 six pole magnet 8-12; The 5th synchrotron straightway 2-5 includes the 13 quadrupole magnet 7-13, the 14 quadrupole magnet 7-14, the tenth the May 4th utmost point magnet 7-15 and the 7th six pole magnet 8-7, the 8th six pole magnet 8-8, the 9th six pole magnet 8-9; The 6th synchrotron straightway 2-6 includes the 16 quadrupole magnet 7-16, the 17 quadrupole magnet 7-17, the 18 quadrupole magnet 7-18, the 19 quadrupole magnet 7-19; The 7th synchrotron straightway 2-7 includes the 20 quadrupole magnet 7-20, the 21 quadrupole magnet 7-21, the 22 quadrupole magnet 7-22 and the 4th six pole magnet 8-4, the 5th six pole magnet 8-5, the 6th six pole magnet 8-6.
Described introducing septum magnet device 9, pulse injection magnet 6 and electronic cooler 5 are arranged among the 6th synchrotron straightway 2-6; Target assembly 4 is arranged among the second synchrotron straightway 2-2 in described; 10 two of described high frequency accelerators are separately positioned among the 3rd synchrotron straightway 2-3 and the 7th synchrotron straightway 2-7.
The synchrotron of described asymmetric magnetic focusing structure, its eight synchrotron bending section 1-1 to 1-8 and eight synchrotron straightway 2-1 to 2-8 change the charged particle beam direction.The angle of charged particle deflection is decided by the magnetic field intensity that dipolar magnet produces on beam path.
The envelope of line is controlled by 22 quadrupole magnet 7-1 to 7-22 that are arranged in straightway in the synchrotron of described asymmetric magnetic focusing structure, and quadrupole magnet is divided into horizontal focusing magnet and horizontal defocus magnet according to the effect difference.Charged particle beam stream is through behind the horizontal focusing magnet, and horizontal size begins to diminish, and vertical dimension begins to increase, and horizontal defocus magnet is opposite.Focus on and defocus the rate of change of magnetic decision that ability is produced on beam path by quadrupole magnet.
The envelope of charged particle in synchrotron, the magnetic field decision that mainly produces in orbit by dipolar magnet and quadrupole magnet.Because the restriction of track, for the charged particle of same energy, the magnetic field that dipolar magnet produces is in orbit confirmed: just can make the center operation of ideal particle along vacuum pipe, otherwise charged particle can lose because running into the vacuum tube wall.And for the charged particle of same energy, the rate of change of magnetic that quadrupole magnet produces in orbit can be adjusted within the specific limits, and the adjustment principle is: under the effect of whole quadrupole magnets, line can stable operation in synchrotron.
The structural design of the synchrotron of described asymmetric magnetic focusing structure is the rate of change of magnetic size that produces in orbit through the adjustment quadrupole magnet, satisfies the requirement of Physical Experiment to line size on the synchrotron diverse location.
Fig. 2 schematically illustrates in the asymmetric magnetic focusing structure synchrotron, and ion beam is made the envelope of circumnutation.Curve ax representes the radius of horizontal direction ion beam, and curve ay representes the radius of vertical direction ion beam.Every curve ordinate in the drawings is unit with the millimeter, in the synchrotron be with rice unit path length in the drawings abscissa represent.Compare with symmetrical magnetic focusing structure synchrotron, its line size on two long straightways is different: bigger in electronics cooling section line size, and less in interior target assembly section line size, well satisfied interior target experimental requirements.
Claims (4)
1. the synchrotron of an asymmetric magnetic focusing structure is characterized in that: described synchrotron includes introduces septum magnet device (9), pulse injection magnet (6), interior target assembly (4), electronic cooler (5), high frequency accelerator (10), eight synchrotron bending sections (1-1 to 1-8) and eight synchrotron straightways (2-1 to 2-8); The envelope of line is by 22 blocks of quadrupole magnets (7-1 to the 7-22) control that is arranged in straightway in the synchrotron of described asymmetric magnetic focusing structure, and described quadrupole magnet is divided into horizontal focusing magnet and horizontal defocus magnet.
2. the synchrotron of asymmetric magnetic focusing structure as claimed in claim 1; It is characterized in that: described eight synchrotron bending sections (1-1 to 1-8) comprise the first synchrotron bending section (1-1), the second synchrotron bending section (1-2), the 3rd synchrotron bending section (1-3), the 4th synchrotron bending section (1-4), the 5th synchrotron bending section (1-5), the 6th synchrotron bending section (1-6), the 7th synchrotron bending section (1-7), the 8th synchrotron bending section (1-8), and the described first synchrotron bending section (1-1) includes two dipolar magnets (3-1,3-2); The second synchrotron bending section (1-2) includes two dipolar magnets (3-15,3-16); The 3rd synchrotron bending section (1-3) includes two dipolar magnets (3-13,3-14); The 4th synchrotron bending section (1-4) includes two dipolar magnets (3-11,3-12); The 5th synchrotron bending section (1-5) includes two dipolar magnets (3-9,3-10); The 6th synchrotron bending section (1-6) includes two dipolar magnets (3-7,3-8); The 7th synchrotron bending section (1-7) includes two dipolar magnets (3-5,3-6); The 8th synchrotron bending section (1-8) includes two dipolar magnets (3-3,3-4).
3. the synchrotron of asymmetric magnetic focusing structure as claimed in claim 1; It is characterized in that: described eight synchrotron straightways (2-1 to 2-8) comprise the first synchrotron straightway (2-1), the second synchrotron straightway (2-2), the 3rd synchrotron straightway (2-3), the 4th synchrotron straightway (2-4), the 5th synchrotron straightway (2-5), the 6th synchrotron straightway (2-6), the 7th synchrotron straightway (2-7), the 8th synchrotron straightway (2-8), and the described first synchrotron straightway (2-1) includes three quadrupole magnets (7-1,7-2,7-3) and three six pole magnets (8-1,8-2,8-3); The second synchrotron straightway (2-2) includes six quadrupole magnets (7-4,7-5,7-6,7-7,7-8,7-9); The 3rd synchrotron straightway (2-3) includes three quadrupole magnets (7-10,7-11,7-12) and three six pole magnets (8-10,8-11,8-12); The 5th synchrotron straightway (2-5) includes three quadrupole magnets (7-13,7-14,7-15) and three six pole magnets (8-7,8-8,8-9); The 6th synchrotron straightway (2-6) includes four quadrupole magnets (7-16,7-17,7-18,7-19); The 7th synchrotron straightway (2-7) includes three quadrupole magnets (7-20,7-21,7-22) and three six pole magnets (8-4,8-5,8-6).
4. the synchrotron of asymmetric magnetic focusing structure as claimed in claim 3, it is characterized in that: described introducing septum magnet device (9), pulse injection magnet (6) and electronic cooler (5) are arranged in the 6th synchrotron straightway (2-6); Target assembly (4) is arranged in the second synchrotron straightway (2-2) in described; Described high frequency accelerator (10) is arranged in eight synchrotron straightways (2-1 to 2-8), and it is single or a plurality of.
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| CN 200910000762 CN101631422B (en) | 2009-01-12 | 2009-01-12 | Synchrotron of asymmetrical magnetic focusing structure |
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| CN 200910000762 CN101631422B (en) | 2009-01-12 | 2009-01-12 | Synchrotron of asymmetrical magnetic focusing structure |
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| CN101631422B true CN101631422B (en) | 2012-05-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101917815B (en) * | 2010-08-10 | 2012-07-04 | 中国科学院近代物理研究所 | Heavy ion or proton synchrotron with medical deflection magnetic focusing structure |
| WO2014052718A2 (en) * | 2012-09-28 | 2014-04-03 | Mevion Medical Systems, Inc. | Focusing a particle beam |
| CN109842986B (en) * | 2019-02-02 | 2021-01-01 | 惠州离子科学研究中心 | Fast-cycle synchrotron with uniform transverse beam current and accelerator system |
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2009
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| US5285166A (en) * | 1991-10-16 | 1994-02-08 | Hitachi, Ltd. | Method of extracting charged particles from accelerator, and accelerator capable of carrying out the method, by shifting particle orbit |
| US5815517A (en) * | 1996-02-19 | 1998-09-29 | Japan Science And Technology Corporation | Method and apparatus for generating super hard laser |
| CN101023715A (en) * | 2004-06-16 | 2007-08-22 | 重离子研究有限公司 | Particle accelerator for radiotherapy by means of ion beams |
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