CN106132061B - The magnet passage drawn suitable for 200-250MeV superconduction bevatron line - Google Patents
The magnet passage drawn suitable for 200-250MeV superconduction bevatron line Download PDFInfo
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- CN106132061B CN106132061B CN201610617155.9A CN201610617155A CN106132061B CN 106132061 B CN106132061 B CN 106132061B CN 201610617155 A CN201610617155 A CN 201610617155A CN 106132061 B CN106132061 B CN 106132061B
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- magnet passage
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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
- H05H7/10—Arrangements for ejecting particles from orbits
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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
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Particle Accelerators (AREA)
Abstract
The present invention relates to a kind of microminiature magnet passages drawn suitable for 200-250MeV superconduction bevatron line, the magnet passage is made of three pieces of iron blocks along beam direction setting, the surface area of one of iron block towards line is larger, the surface area of other two pieces of iron blocks towards lines is smaller, the biggish iron block of surface area is located at the inside of line, the lesser iron block of other two pieces of surface areas is located at the outside of line, two pieces of lesser iron blocks of surface area, which are gone to upper and lower, to be arranged symmetrically, and line passes through from the intermediate gaps that three pieces of iron blocks are formed.Microminiature magnet passage provided by the present invention can set gradually multiple along beam trace, and compact-sized, main to influence to draw the magnetic field near track, the influence very little to main field avoids the complexity that main field is had a snack.
Description
Technical field
The invention belongs to cyclotron designing techniques, and in particular to one kind is suitable for 200-250MeV superconduction proton and circles round
The magnet passage that accelerator line is drawn.
Background technique
200-250MeV superconduction bevatron is in fields such as proton therapeutic, space flight military project and nuclear physics basic research
It is widely used.Most of bevatron is all made of electrostatic deflection plates and is drawn, after deflecting plates, line
The inevitably edge field areas through long-distance can cause beam divergence since the fringing field of draw-out area is very big, thus
Cause beam loss.In order to inhibit fringing field to the blooming effect of line, often carried out using passive magnetic pass element halved tie stream
It focuses.In the lower bevatron of most of energy, draw path it is shorter, often magnet passage be made into one it is whole
Body.And in the superconduction bevatron of 200-250MeV, line extraction path is longer, takes into account the entire magnetic for drawing path
Channel whole design can generate significant impact to accelerating region main field, bring very big puzzlement to having a snack for main field.
Summary of the invention
The purpose of the present invention is for the beam divergence drawn on track in 200-250MeV superconduction bevatron
Problem provides a kind of subminiature magnet passage design, completes the beam focusing in spill process.
Technical scheme is as follows：It is a kind of suitable for 200-250MeV superconduction bevatron line draw
Magnet passage, the aperture of magnet passage are 5-7mm, are made of three pieces of iron blocks along beam direction setting, and one of iron block is towards beam
The surface area of stream is larger, and in addition the surface area of two pieces of iron blocks towards lines is smaller, and the biggish iron block of surface area is located at the interior of line
Side, in addition two pieces of lesser iron blocks of surface area are located at the outside of line, and two pieces of lesser iron blocks of surface area are gone to upper and lower pair
Claim arrangement, line passes through from the intermediate gaps that three pieces of iron blocks are formed, and sets gradually multiple magnet passages along beam trace, completes
Beam focusing in spill process.
Further, the magnet passage drawn as described above suitable for 200-250MeV superconduction bevatron line,
Wherein, the one side of three pieces of iron blocks towards lines is in rectangular configuration.
Further, the magnet passage drawn as described above suitable for 200-250MeV superconduction bevatron line,
Wherein, the thickness of three pieces of iron block horizontal directions is respectively less than 6mm.
Further, the magnet passage drawn as described above suitable for 200-250MeV superconduction bevatron line,
Wherein, two pieces of lesser iron blocks of surface area are less than 30mm in the total height of vertical direction.
Further, the magnet passage drawn as described above suitable for 200-250MeV superconduction bevatron line,
Wherein, the biggish iron block of the surface area is 10-20mm in the height of vertical direction.
Further, the magnet passage drawn as described above suitable for 200-250MeV superconduction bevatron line,
Wherein, the length for the magnet passage that three pieces of iron blocks are formed is 10-20cm.
Further, the magnet passage drawn as described above suitable for 200-250MeV superconduction bevatron line,
Wherein, it is 1-5KGs/cm that magnet passage, which is formed by neutral magnetic field gradient,.
Beneficial effects of the present invention are as follows：Microminiature magnet passage provided by the present invention can be set gradually along beam trace
Multiple, compact-sized, main to influence to draw the magnetic field near track, the influence very little to main field avoids main field pad
The complexity of benefit.The present invention can be very good to solve the line hair that track is drawn in 200-250MeV superconduction bevatron
The problem of dissipating completes the beam focusing in spill process.
Detailed description of the invention
Fig. 1 is the small-sized magnet passage of the present invention and beam trace schematic diagram；
Fig. 2 is schematic cross-section of the magnet passage perpendicular to beam direction；
Fig. 3 is the schematic layout pattern that six magnet passages on track are drawn in superconduction bevatron.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, microminiature magnet passage provided by the present invention is made of three pieces of iron blocks, line is formed from three pieces of iron blocks
Intermediate gaps pass through.
Three pieces of iron blocks include one piece of biggish iron block 12 and two pieces of lesser iron blocks 13, and iron block is towards line in the present embodiment
11 one side is in rectangular configuration, and each iron block is integrally in elongated cubic shaped.Square surface product of the iron block 12 towards line
Larger, in addition the square surface product of two pieces of iron blocks 13 towards line is smaller, and the biggish iron block 12 of surface area is located at the interior of line 11
Side, in addition the lesser iron block 13 of two pieces of surface areas is located at the outside of line, and the lesser iron block of two pieces of surface areas 13 is relative to line
It goes to upper and lower and is arranged symmetrically, a magnet passage space is formed between three pieces of iron blocks, line 11 is exactly from the magnet passage
It passes through.Since the radial envelope of accelerator line is generally less than 5mm, three pieces of iron blocks formed magnet passage aperture r (see
It Fig. 2) is designed as 5-7mm, guarantees that line passes through.
As shown in Fig. 2, the thickness d of three pieces of iron block horizontal directions of magnet passage provided by the present embodiment is respectively less than 6mm,
The lesser iron block of upper and lower two pieces of surface areas vertical direction overall height H be less than 30mm, the biggish iron block of surface area it is vertical
Height h range is 10-20mm.
Since magnet passage iron block is cubic shaped, and the track of line is approximately circular arc line, in order to beat line not
On iron block, the length of magnet passage cannot be too long, between generally 10-20cm.
Neutral magnetic field gradient is formed by between 1-5KGs/cm according to the magnet passage of above-mentioned size design.
Embodiment
As shown in figure 3, extraction proton energy is 240MeV, by two electrostatic deflection in certain superconduction bevatron
Plate 2,3 is drawn, and the quality of beam after drawing deflecting plates is very bad, and 1 is magnetic pole in figure.Due to the beam divergence of deflecting plates exit
Seriously, pack is carried out by the way of small-sized magnet passage, places a magnet passage element 4 in product position, magnetic field gradient is
4.5kGs/cm；Then the further pack of five magnet passages 5,6,7,8,9, five magnet passages are sequentially placed on drawing track 10
Magnetic field gradient be 3kGs/cm.Due to magnet passage very little, it can be packaged by non-magnet material, be fixed on thermostat
On inner wall, install very convenient.Table 1 gives the detailed dimensions of magnet passage element 4,5,6,7,8,9 in Fig. 3.
Superconduction bevatron draws magnet passage component size in table 1, embodiment
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of magnet passage drawn suitable for 200-250MeV superconduction bevatron line, it is characterised in that：The magnetic
The aperture in channel is 5-7mm, is made of three pieces of iron blocks along beam direction setting, one of iron block (12) is towards line (11)
Surface area it is larger, in addition the surface area of two pieces of iron blocks (13) towards lines (11) is smaller, the biggish iron block of surface area (12) position
In the inside of line (11), in addition two pieces of lesser iron blocks of surface area (13) are located at the outside of line (11), two pieces of tables
The lesser iron block of area (13), which is gone to upper and lower, to be arranged symmetrically, and line (11) passes through from the intermediate gaps that three pieces of iron blocks are formed, along line
Track sets gradually multiple magnet passages, completes the beam focusing in spill process.
2. the magnet passage drawn as described in claim 1 suitable for 200-250MeV superconduction bevatron line,
It is characterized in that：The one side of three pieces of iron blocks towards lines is in rectangular configuration.
3. the magnet passage drawn as claimed in claim 2 suitable for 200-250MeV superconduction bevatron line,
It is characterized in that：The thickness of three pieces of iron block horizontal directions is respectively less than 6mm.
4. the magnetic flux for being suitable for 200-250MeV superconduction bevatron line and drawing as described in claims 1 or 2 or 3
Road, it is characterised in that：Two pieces of lesser iron blocks of surface area are less than 30mm in the total height of vertical direction.
5. the magnet passage drawn as claimed in claim 4 suitable for 200-250MeV superconduction bevatron line,
It is characterized in that：The biggish iron block of the surface area is 10-20mm in the height of vertical direction.
6. the magnet passage drawn as claimed in claim 5 suitable for 200-250MeV superconduction bevatron line,
It is characterized in that：The length for the magnet passage that three pieces of iron blocks are formed is 10-20cm.
7. the magnet passage drawn as claimed in claim 6 suitable for 200-250MeV superconduction bevatron line,
It is characterized in that：It is 1-5KGs/cm that magnet passage, which is formed by neutral magnetic field gradient,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610617155.9A CN106132061B (en) | 2016-07-29 | 2016-07-29 | The magnet passage drawn suitable for 200-250MeV superconduction bevatron line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610617155.9A CN106132061B (en) | 2016-07-29 | 2016-07-29 | The magnet passage drawn suitable for 200-250MeV superconduction bevatron line |
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| CN106132061A CN106132061A (en) | 2016-11-16 |
| CN106132061B true CN106132061B (en) | 2018-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2747217C1 (en) * | 2020-10-29 | 2021-04-29 | Федеральное государственное бюджетное учреждение "Петербургский институт ядерной физики им. Б.П. Константинова Национального исследовательского центра "Курчатовский институт" | Method of irradiation of large targets on the proton beam of the synchrocyclotron |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110740561B (en) * | 2018-07-21 | 2021-07-30 | 中国原子能科学研究院 | Edge field shimming method for leading out magnetic channel element in superconducting cyclotron |
| JP7352412B2 (en) * | 2019-08-28 | 2023-09-28 | 住友重機械工業株式会社 | cyclotron |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1005530A4 (en) * | 1991-11-22 | 1993-09-28 | Ion Beam Applic Sa | Cyclotron isochronous |
| JP3488915B2 (en) * | 2001-03-08 | 2004-01-19 | 高エネルギー加速器研究機構長 | Septum electromagnet for beam deflection separation, electromagnet for beam deflection separation, and beam deflection method |
| JP5722254B2 (en) * | 2012-02-28 | 2015-05-20 | 住友重機械工業株式会社 | Deflector |
| JP2013182881A (en) * | 2012-03-05 | 2013-09-12 | Sumitomo Heavy Ind Ltd | Magnetic channel |
| CN205883691U (en) * | 2016-07-29 | 2017-01-11 | 中国原子能科学研究院 | Subminiature magnet passage suitable for 200 beam ejection of superconductive proton cyclotron of 250MeV |
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- 2016-07-29 CN CN201610617155.9A patent/CN106132061B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2747217C1 (en) * | 2020-10-29 | 2021-04-29 | Федеральное государственное бюджетное учреждение "Петербургский институт ядерной физики им. Б.П. Константинова Национального исследовательского центра "Курчатовский институт" | Method of irradiation of large targets on the proton beam of the synchrocyclotron |
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| CN106132061A (en) | 2016-11-16 |
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