CN101299901B - Irradiation accelerator gathering magnetic iron and method for preparing the same - Google Patents
Irradiation accelerator gathering magnetic iron and method for preparing the same Download PDFInfo
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- CN101299901B CN101299901B CN2008100621209A CN200810062120A CN101299901B CN 101299901 B CN101299901 B CN 101299901B CN 2008100621209 A CN2008100621209 A CN 2008100621209A CN 200810062120 A CN200810062120 A CN 200810062120A CN 101299901 B CN101299901 B CN 101299901B
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- bar magnet
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- irradiation accelerator
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Abstract
The invention relates to the irradiation accelerator application field, and discloses an irradiation accelerator gathering magnet and method for preparing the same, which is designed to solve the problem that the prior irradiation accelerator produces dispersed electron beam during scanning and can not achieve the ideal irradiation effect. The magnet design is characterized in by being made of two high magnetic conduction materials, winding energizing coils on rectangle magnetic rods as magnetic poles, which are separatedly placed in parallel and have different polarity at two terminals; taking non-magnetic stainless steel as support of the two terminal polarity to form a clearance. The preparing method includes: directly winding the insulated wires on the insulated magnetic rod, brushing liquid epoxy adhesive, and the insulated wires and the insulated magnetic rod solidifying as a whole. The invention has distinctive features of simple structure, practical preparing method, low cost, strong practicability, advanced nature and easy achievement.
Description
Technical field
The present invention relates to the irradiation accelerator application, is a kind of irradiation accelerator gathering magnetic iron and manufacture method.
Background technology
At present, produce the electron beam that scatters during irradiation accelerator scanning, do not reach desirable irradiation effect.About the structure and the manufacture method of new electromagnet, the technology of using in the irradiation accelerator field is not at home and abroad reported on the public publication so far as yet.
Summary of the invention
For overcoming above-mentioned deficiency, the objective of the invention is provides a kind of irradiation accelerator gathering magnetic iron and manufacture method to this area, makes it can solve irradiation accelerator after the scanning electron beam that scatters and becomes the technical problem of parallel electron beam.The objective of the invention is to realize by the following technical solutions.
A kind of irradiation accelerator gathering magnetic iron, this magnet key points in design is made by two high permeability materials, and as magnetic pole, place by spaced-apart parallel around last magnetizing coil for rectangular bar magnet, and two ends polarity is different; Described two ends polarity does to support the formation gap with non-magnetic stainless steel.
Magnetic field is zero to increase to two ends are linear in the middle of the described bar magnet, and magnetic field, two ends is opposite magnetic field, and electronic beam current produces deflection during by two clearance between poles, and deflection angle is regulated by exciting curent.
Described non-magnetic stainless steel and bolt compress the iron core of two bar magnets, fixedly the depth of parallelism and height between bar magnet.After bar magnet is installed on accelerator, when the electronic beam current of divergent shape passes through two clearance between poles, obtain the power effect to the center, produce the deflection at sensing center, form parallel electron beam, on the vertical irradiation product, deflection angle can be regulated by exciting curent.Like this, the electron beam of irradiation accelerator is fully used through behind the action of a magnetic field, and it is good to reach irradiation uniformity.
Described bar magnet is with the non-magnetic stainless steel of 30 (thick) mm * 100 (wide) mm * 187.4 (height) mm and the iron core that bolt compresses two bar magnets, fixedly the depth of parallelism and height between bar magnet.
A kind of irradiation accelerator gathering magnetic iron manufacture method, this method are the transversal face width 100mm of bar magnet, high 80mm, length overall 1260mm; Bar magnet is earlier with three layers of 0.1mm * 1210mm epoxy fibreglass cloth bag, uses four layers of the 0.05mm of band oxygen * 1210mm polyimides cloth bag again, compresses oven dry, and producing dimensional thickness is the insulation against ground layer of 0.5mm; Then with double glass fiber bag lead, with the lead after the insulation directly on the bar magnet of insulation, the epoxy glue that brush is liquid, the bar magnet after the lead after the insulation and the insulation is solidified into integral body; It is 1220mm that epoxy glue solidifies back the extremely wide of bar magnet, and two ends respectively have the 5mm iron core to expose, and carry out magnetic annealing before the iron core fine finishining.The bar magnet of making like this, magnetic field are linear change, magnetic field width 1000mm, central point magnetic field is zero, and limit, the distance center left and right sides ± magnetic field, 500mm place is to the maximum ± 752Gs, and effective length in magnetic field is 150mm, pole clearance (Gap) 75mm～87.4mm, current density is 1.206A/mm
2But, natural cooling.Core material is the DT-4 electrical pure iron, and the 5mm iron core at two ends is assemblied on the non-magnetic stainless steel.
The principle of gathering magnetic iron of the present invention and design feature, the numerical parameter that described manufacture method relates to can be adjusted according to the situation of reality.As imitated under the scheme that is equal to, all belong to protection category of the present invention.
Distinguishing feature of the present invention is simple in structure, and manufacture method is feasible.Cost is low, and is practical, has advance and easy implementation.
Description of drawings
Fig. 1 is a part-structure sectional block diagram of the present invention, has Y, Z axial coordinate.
Fig. 2 is an assembling schematic diagram of the present invention.
Fig. 3 is that the present invention is used for petal irradiation accelerator schematic diagram.
Fig. 4 is that magnetic field of the present invention is by force along wide distribution waveform figure.
Fig. 5 is a Distribution of Magnetic Field schematic diagram of the present invention.
Fig. 6 is two-dimensional arrangement figure of the present invention.
Fig. 7 is that magnetic field of the present invention is along the cross direction profiles oscillogram.
Fig. 8 is X=10cm of the present invention, and Y=0 magnetic field is along electronic beam current direction distribution map and each point magnetic field value.
Fig. 9 is X=50cm of the present invention, and Y=0 magnetic field is along electronic beam current direction distribution map and each point magnetic field value.
Above figure number and title: 1, epoxy glue, 2, bar magnet, 3, iron core, 4, non-magnetic stainless steel, 5, electron gun, 6, condenser lens, 7, draw magnetic in, 8, accelerating cavity.
Embodiment
Concrete enforcement of the present invention and test result are described as follows.The bar magnet 2 that two high permeability materials are made around last magnetizing coil as magnetic pole, spaced-apart parallel is placed, the iron core 3 usefulness non-magnetic stainless steels 4 at two ends make to support formation gap (see figure 2), the different gathering magnetic 7 as petal irradiation accelerator in polarity two ends is positioned over the position (see figure 3) of drawing the magnetic correspondence in the accelerating cavity 8 in.Be positioned over after the scanning magnet, the electron beam that electron gun 5 penetrates, the deflecting action angularity ray that is subjected to magnetic field comes flyback retrace, make radially electron beam again deflection return, become parallel lines vertically to shine on the product, thereby electron beam is fully used, dose uniformity is good.
Its measurement of magnetic field result:
One, two-dimensional magnetic field
(1) magnetic field is by force along wide distribution waveform figure (see figure 4)
(2) Distribution of Magnetic Field schematic diagram (see figure 5)
(3) two-dimensional arrangement figure (see figure 6)
(4) each point magnetic field is worth table by force
| K | L | Az(G-cm) | X(cm) | Y(cm) | Bx(G) | By(G) | B(G) | dBy/dy＝-dBx/dx | dBy/dx |
| 31 | 1 | -1.037752E+04 | -57.59197 | 0.00000 | 0.000 | 886.939 | 886.939 | 0.0000D+00 | -1.0242D-01 |
| 46 | 1 | -1.651981E+04 | -50.36789 | 0.00000 | 0.000 | 797.362 | 797.362 | 0.0000D+00 | -1.5818D+01 |
| 47 | 1 | -1.683855E+04 | -49.96656 | 0.00000 | 0.000 | 791.010 | 791.010 | 0.0000D+00 | -1.5824D+01 |
| 57 | 1 | -2.046390E+04 | -45.15050 | 0.00000 | 0.000 | 714.491 | 714.491 | 0.0000D+00 | -1.5867D+01 |
| 68 | 2 | -2.397542E+04 | -39.93311 | 0.00000 | 0.000 | 631.613 | 631.613 | 0.0000D+00 | -1.5835D+01 |
| 78 | 2 | -2.683329E+04 | -35.11706 | 0.00000 | 0.000 | 555.213 | 555.213 | 0.0000D+00 | -1.5811D+01 |
| 88 | 1 | -2.951437E+04 | -29.89967 | 0.00000 | 0.000 | 472.547 | 472.547 | 0.0000D+00 | -1.5795D+01 |
| 98 | 1 | -3.160660E+04 | -25.08361 | 0.00000 | 0.000 | 396.317 | 396.317 | 0.0000D+00 | -1.5786D+01 |
| 109 | 1 | -3.345908E+04 | -19.86622 | 0.00000 | 0.000 | 313.807 | 313.807 | 0.0000D+00 | -1.5782D+01 |
| 119 | 1 | -3.478713E+04 | -15.05017 | 0.00000 | 0.000 | 237.710 | 237.710 | 0.0000D+00 | -1.5782D+01 |
| 130 | 1 | -3.581239E+04 | -9.83278 | 0.00000 | 0.000 | 155.315 | 155.315 | 0.0000D+00 | -1.5783D+01 |
| 140 | 1 | -3.637732E+04 | -5.01672 | 0.00000 | 0.000 | 79.294 | 79.294 | 0.0000D+00 | -1.5786D+01 |
| 150 | 2 | -3.657619E+04 | -0.20067 | 0.00000 | 0.000 | 3.292 | 3.292 | 0.0000D+00 | -1.5790D+01 |
| 151 | 2 | -3.657624E+04 | 0.20067 | 0.00000 | 0.000 | -3.041 | 3.041 | 0.0000D+00 | -1.5791D+01 |
| 160 | 1 | -3.637860E+04 | 5.01672 | 0.00000 | 0.000 | -79.036 | 79.036 | 0.0000D+00 | -1.5796D+01 |
| 171 | 1 | -3.575146E+04 | 10.23411 | 0.00000 | 0.000 | -161.371 | 161.371 | 0.0000D+00 | -1.5802D+01 |
| 181 | 1 | -3.479121E+04 | 15.05017 | 0.00000 | 0.000 | -237.398 | 237.398 | 0.0000D+00 | -1.5809D+01 |
| 191 | 1 | -3.346473E+04 | 19.86622 | 0.00000 | 0.000 | -313.469 | 313.469 | 0.0000D+00 | -1.5818D+01 |
| 202 | 1 | -3.161417E+04 | 25.08361 | 0.00000 | 0.000 | -395.927 | 395.927 | 0.0000D+00 | -1.5828D+01 |
| 212 | 1 | -2.952394E+04 | 29.89967 | 0.00000 | 0.000 | -472.112 | 472.112 | 0.0000D+00 | -1.5839D+01 |
| 223 | 2 | -2.684524E+04 | 35.11706 | 0.00000 | 0.000 | -554.743 | 554.743 | 0.0000D+00 | -1.5855D+01 |
| 233 | 2 | -2.398969E+04 | 39.93311 | 0.00000 | 0.000 | -631.123 | 631.123 | 0.0000D+00 | -1.5874D+01 |
| 243 | 1 | -2.048075E+04 | 45.15050 | 0.00000 | 0.000 | -713.994 | 713.994 | 0.0000D+00 | -1.5897D+01 |
| 253 | 1 | -1.685775E+04 | 49.96656 | 0.00000 | 0.000 | -790.526 | 790.526 | 0.0000D+00 | -1.5843D+01 |
| 274 | 1 | -8.300328E+03 | 60.00000 | 0.00000 | 0.000 | -836.839 | 836.839 | 0.0000D+00 | 4.2043D+01 |
Two, three-dimensional magnetic field
(1) stereogram (see figure 1)
(2) magnetic field is along cross direction profiles oscillogram (see figure 7)
(3) X=10cm, Y=0 magnetic field is along electronic beam current direction distribution map and each field of points value (see figure 8)
Component：BY，Integral＝-1575.8517867099
(4) X=50cm, Y=0 magnetic field is along electronic beam current direction distribution map and each field of points value (see figure 9)
Component：BY，Integral＝-7741.4513395208
(5) along beam direction half magnetic field of magnets integrated value
y＝0，X＝10cm，Z＝0-80cm，Component：BY，Integral＝-1575.85Gs-cm
y＝0，X＝20cm，Z＝0-80cm，Component：BY，Integral＝-3172.14Gs-cm
y＝0，X＝30cm，Z＝0-80cm，Component：BY，Integral＝-4760.74Gs-cm
y＝0，X＝40cm，Z＝0-80cm，Component：BY，Integral＝-6313.37Gs-cm
y＝0，X＝50cm，Z＝0-80cm，Component：BY，Integral＝-7741.45Gs-cm
As seen, field of integration also is a linear change.
Magnetic field analysis by above-mentioned two and three dimensions as seen, the magnet arrangement of these two bar magnets combinations is as the gathering magnetic iron of irradiation accelerator, the line that satisfies irradiation accelerator fully draws functional requirement in.
Claims (3)
1. irradiation accelerator gathering magnetic iron, this magnet are characterised in that by two high permeability materials and make that as magnetic pole, place by spaced-apart parallel around last magnetizing coil for rectangular bar magnet (2), and two ends polarity is different; The formation gap is done to support with non-magnetic stainless steel (4) in described two ends.
2. irradiation accelerator gathering magnetic iron according to claim 1 is characterized in that described non-magnetic stainless steel (4) and bolt compress the iron core (3) of two bar magnets, fixedly the depth of parallelism and height between bar magnet (2).
3. an irradiation accelerator gathering magnetic iron manufacture method the method is characterized in that bar magnet earlier with three layers of epoxy fibreglass cloth bags, with four layers of the polyimides cloth bags that soaked in the epoxy, compresses oven dry again, produces the insulation against ground layer; Then with double glass fiber bag lead, with the lead after the insulation directly on the bar magnet of insulation, the epoxy glue that brush is liquid, the bar magnet after the lead after the insulation and the insulation is solidified into integral body; Epoxy glue solidifies bar magnet two ends, back each cored exposing, and carries out magnetic annealing before the iron core fine finishining; The bar magnet of making, magnetic field are linear change, and middle magnetic field is zero to increase to two ends are linear, and magnetic field, two ends is opposite magnetic field, and electronic beam current produces deflection during by two clearance between poles, and deflection angle is regulated by exciting curent.
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| CN2008100621209A CN101299901B (en) | 2008-06-05 | 2008-06-05 | Irradiation accelerator gathering magnetic iron and method for preparing the same |
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| CN2008100621209A CN101299901B (en) | 2008-06-05 | 2008-06-05 | Irradiation accelerator gathering magnetic iron and method for preparing the same |
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| CN101299901A CN101299901A (en) | 2008-11-05 |
| CN101299901B true CN101299901B (en) | 2011-03-30 |
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| CN113181556B (en) * | 2021-04-30 | 2022-09-23 | 西北核技术研究所 | Irradiation cavity based on medium substrate structure and used for enhancing field intensity in large effector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376893A (en) * | 1991-11-28 | 1994-12-27 | Commissariat A L'energie Atomique | Resonant cavity electron accelerator |
| CN2938701Y (en) * | 2006-08-16 | 2007-08-22 | 宁波超能科技股份有限公司 | Petaling irradiation accelerator |
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2008
- 2008-06-05 CN CN2008100621209A patent/CN101299901B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376893A (en) * | 1991-11-28 | 1994-12-27 | Commissariat A L'energie Atomique | Resonant cavity electron accelerator |
| CN2938701Y (en) * | 2006-08-16 | 2007-08-22 | 宁波超能科技股份有限公司 | Petaling irradiation accelerator |
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