JPH02174099A - Superconductive deflecting electromagnet - Google Patents
Superconductive deflecting electromagnetInfo
- Publication number
- JPH02174099A JPH02174099A JP32761288A JP32761288A JPH02174099A JP H02174099 A JPH02174099 A JP H02174099A JP 32761288 A JP32761288 A JP 32761288A JP 32761288 A JP32761288 A JP 32761288A JP H02174099 A JPH02174099 A JP H02174099A
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- Prior art keywords
- magnetic field
- coil
- coils
- magnetic
- correction coil
- Prior art date
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 91
- 238000005452 bending Methods 0.000 claims description 14
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 230000005284 excitation Effects 0.000 description 8
- 230000004907 flux Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005405 multipole Effects 0.000 description 3
- 230000005469 synchrotron radiation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 240000005561 Musa balbisiana Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 230000035601 cold sensitivity Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、磁界を発生さ・ぜて荷電、ビームを偏向さ
せる主コイルと、磁界をｒＡ整して高均一磁界を作る多
極補正コイルとを備えた＠Ｙ導偏向電磁石に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] This invention consists of a main coil that generates a magnetic field, charges it, and deflects a beam, and a multipolar correction coil that adjusts the magnetic field to rA to create a highly uniform magnetic field. The present invention relates to a @Y-guide bending electromagnet.
第１０図は、［ジャンク他”最゛初の小型放射光源用超
電導原型マグネット” フイ・イー・イー・イートラン
スアクジョンズ オン マグネデイクス、Ｖｏｔ２４．
４２゜１２３０−１２３２貞、１９８８年３月（Ａ、Ｊ
ａｂｎｋｅ他”ＦＩＲ８ＴＳＵＰＥＲＣＯＮＴ）ＵＣＴ
ＩＮＧ ＰＲ，０ＴＯＴＹＰＥ ＭＡＧＮＥＴＳ Ｆ’
ＯＲ，Ａ （Ｔｈ４’Ａ（ＩＴｊ’５ＹＮＣＨＲＯＴＲ
ＯＮ ＲＡＤＩＡＴＩＯＮ ５ＯＵＲ，ＣＥ ＩＮ ０
ＰＥＲＡＴＩＯＮ□ＩＥＥＥ ＴＲＡＮＳＡＣＴＩＯＮ
Ｓ ＯＮ ＭＡＧＮＥＴＩＣ８）、Ｊ ’Ｌ示された従
来の超電導偏向電磁石を示ず余１皆１図であン）。図に
おいて、（１）は主コイル、（２）は補助フィル、（３
）は傾斜コイル、（４）はタライオスタットー（５）は
荷電ビム（６）を通すビームダク） 、 （７）は放射
光子゛あＺ−１７、次ｆ、動作について説、明づる一主
と１−５“て、主コイル（１）が発生ずる垂直方向の磁
界（相対する主コイル（１）Ｋ鎖交する磁界）によって
荷電ビーム（５）は１８０度偏向される。この時、荷電
ビーム（６）は半径方向に力を受けるから、それと直光
する方向（ビーム軌道の接線方向）（（放射光（７）を
発生する。Figure 10 is [Junk et al.'s "The First Superconducting Prototype Magnet for Compact Synchrotron Radiation Source", FIE Transactions on Magnedix, Vot24.
42゜1230-1232 Sada, March 1988 (A, J
abnke et al.”FIR8TSUPERCONT)UCT
ING PR,0TOTYPE MAGNETS F'
OR, A (Th4'A(ITj'5YNCHROTR
ON RADIATION 5OUR, CE IN 0
PERATION□IEEE TRANSACTION
S ON MAGNETIC 8), J'L does not show the conventional superconducting bending electromagnet; the rest are all in one figure). In the figure, (1) is the main coil, (2) is the auxiliary fill, and (3) is the main coil.
) is the gradient coil, (4) is the taliostat, (5) is the beam duct that passes the charged beam (6), and (7) is the emitted photon. 1-5", the charged beam (5) is deflected 180 degrees by the vertical magnetic field generated by the main coil (1) (the magnetic field interlinking with the opposing main coil (1). At this time, the charged beam (5) is deflected by 180 degrees. Since the beam (6) receives a force in the radial direction, it generates synchrotron radiation (7) in the direction directly to it (the tangential direction of the beam trajectory).
高エネルギービームを小半径で曲げるには高磁界が必要
なため超電導偏向電磁石が用いられる。Superconducting bending electromagnets are used because a high magnetic field is required to bend a high-energy beam with a small radius.
荷物ビーム（６）は有限の断面稍を持っている（通常数
ＩＩＴｎ程度）。また１、集束用の４極電ｍ石（図示せ
ず）の設ｇ誤差などによって、超電導偏向宿磁石中の荷
電ビーム（６）の軌道は設計位ｔ（通常は主コイル（１
）の中心）から数１０ｒｒｍずれることもある。The cargo beam (6) has a finite cross-sectional depth (usually on the order of several IITn). In addition, 1. Due to the setting g error of the focusing quadrupole magnet (not shown), the trajectory of the charged beam (6) in the superconducting deflection magnet is at the design position t (usually the main coil (1
) may deviate from the center by several tens of rrm.
以上の２つの理由から、超電導偏向電磁石は荷電ビーム
（６）の軌道に沿って断面が数１０ｒｒｍ角程度の領域
に高均一な磁界を発生する。この均一磁界によって、全
荷電ビーム（６）を１８０度偏向する。補助コイル（２
）や傾斜コイル（３）は主コイル（１）が作る磁界を調
整して上述の高均一磁界を作るのに用いられる。また、
傾斜コイル（３）は、高均一磁界に荷電ビーム（６）の
曲率半径方向に直線的に変化する垂直方向磁界を重畳し
て、荷電ビーム（６）の断面寸法を小さくするために使
用される。For the above two reasons, the superconducting bending electromagnet generates a highly uniform magnetic field in a region having a cross section of about several tens of rrm square along the trajectory of the charged beam (6). This uniform magnetic field deflects the entire charged beam (6) by 180 degrees. Auxiliary coil (2
) and the gradient coil (3) are used to adjust the magnetic field created by the main coil (1) to create the highly uniform magnetic field described above. Also,
The gradient coil (3) is used to reduce the cross-sectional dimension of the charged beam (6) by superimposing a vertical magnetic field that varies linearly in the radius of curvature of the charged beam (6) on a highly uniform magnetic field. .
クライオスタット（４）は各コイルを極低温に保持する
ための低温容器である。低温容器は、低温せい性を防ぐ
ためや超電導コイルから発生する磁界を歪せないために
、通常ステンレス鋼などの非磁性金属で作られる。ビー
ムダクト（５）は荷電ビーム（６）の通過する領域を高
真空にして荷電ビーム（６）の消滅を防ぐための真空ダ
クトである。The cryostat (4) is a low temperature container for maintaining each coil at an extremely low temperature. Cryocontainers are usually made of non-magnetic metals such as stainless steel to prevent cold sensitivity and to avoid distorting the magnetic field generated by the superconducting coils. The beam duct (5) is a vacuum duct that creates a high vacuum in the area through which the charged beam (6) passes to prevent the charged beam (6) from disappearing.
７従来の超電導偏向電磁石は以上のように構成されてい
るので、その外部に高い漏れ磁界が生じ、超電５導偏向
電磁石の近傍に設置され荷電ビームの通る機器は荷電ビ
ームが曲げられないように厳重Ｋａｆ気シールドしなげ
ればならないという問題点があった。7 Conventional superconducting bending electromagnets are configured as described above, so a high leakage magnetic field is generated outside of them, and equipment installed near superconducting bending magnets and through which charged beams pass must be careful not to bend the charged beams. There was a problem in that it required a strict Kaf ki shield.
この発明は、かかる問題点を解消するためになされたも
ので、漏れ磁界の小さい超電導偏向ｔｉｊｓ石を得るこ
とを目的とする。This invention was made to solve this problem, and aims to obtain a superconducting deflection tijs stone with a small leakage magnetic field.
この発明に係る超電導偏向電磁石は、主コイルおよび多
極補正コイルの周囲に前記磁界が外部に漏れるのを防止
する磁気シールド体を設けたものである。A superconducting bending electromagnet according to the present invention is provided with a magnetic shield around a main coil and a multipolar correction coil to prevent the magnetic field from leaking to the outside.
この発明における超電導偏向Ｍ磁石は、多極補正コイル
を囲った強磁性体からなる磁気シールド体により、外部
への漏れ磁界が十分に小さくなる。In the superconducting deflection M magnet according to the present invention, the leakage magnetic field to the outside is sufficiently reduced due to the magnetic shield made of ferromagnetic material surrounding the multipolar correction coil.
以下、この発明の一実施例を図について説明する。第１
Ａ図はこの発明の超電導偏向電磁石の平面図、第１Ｂ図
は第１Ａ図のＩＢ−ＩＢ線に沿う断面図を示すものであ
る。An embodiment of the present invention will be described below with reference to the drawings. 1st
Figure A is a plan view of the superconducting bending electromagnet of the present invention, and Figure 1B is a sectional view taken along line IB-IB in Figure 1A.
図において、（工１）は磁気シールド体、（１）は、主
コイル、（３１）は多極補正コイルとしての４極補正コ
イル、（３２）は多極補正コイルとしての６極補正コイ
ル、（４）はクライオスタット、（１２）は主な磁束を
示す磁力線である。In the figure, (1) is a magnetic shield body, (1) is a main coil, (31) is a 4-pole correction coil as a multi-pole correction coil, (32) is a 6-pole correction coil as a multi-pole correction coil, (4) is a cryostat, and (12) is a line of magnetic force showing the main magnetic flux.
第２図は超電導偏向電磁石の外観斜視図であり、図中（
５１）はビームダクトを通す窓である。ここＫは、ビー
ムダクトの図は省略した。荷電ビーム（６）は電子ビー
ムまたは陽子ビームであって、ビーム偏向部からＳＯＲ
光（放射光）（７）を取り出す場合は、ビーム軌道の接
線方向ＫＳＯＲ光用の真空ポートが設電されるので、磁
気シールド体（１１）の外周部には真空ボートを通す穴
が設げられる。ここでは、この穴は本質でないので触れ
ないことにする。Figure 2 is an external perspective view of a superconducting bending electromagnet.
51) is a window through which the beam duct passes. Here K, the illustration of the beam duct is omitted. The charged beam (6) is an electron beam or a proton beam, and the SOR
When extracting the light (synchrotron radiation) (7), a vacuum port for the KSOR light in the tangential direction of the beam trajectory is installed, so a hole is provided on the outer periphery of the magnetic shield (11) to pass the vacuum boat through. It will be done. Since this hole is not essential, we will not touch on it here.
第３Ａ図は主コイル（１）の斜視図、第３Ｂ図は４極補
コイル（３１）の斜視図、第３Ｃ図は６極補正コイル（
３２）の斜視図である。Figure 3A is a perspective view of the main coil (1), Figure 3B is a perspective view of the 4-pole auxiliary coil (31), and Figure 3C is a 6-pole correction coil (31).
32) is a perspective view of FIG.
第１Ａ図、第１Ｂ図および第２図から明らかなように磁
気シールド体（１１）が超電導偏向電磁石を囲っている
ため、ＩＷ＆石の外部への磁界の漏れは小さい。第１Ｂ
図中の断面図の磁力線（１２）に示しているようＫ、主
な磁力線（１２）は磁気シールド体（１１）中を通る。As is clear from FIGS. 1A, 1B, and 2, since the magnetic shield (11) surrounds the superconducting bending electromagnet, leakage of the magnetic field to the outside of the IW & stone is small. 1st B
As shown by the lines of magnetic force (12) in the cross-sectional view in the figure, the main lines of magnetic force (12) pass through the magnetic shield (11).
また、４極補正コイル（３１）は第３Ｂ図に示したよう
な４個のバナナ形にしたもので、第１Ｂ図に示したよう
に主コイル（１）の中に設置される。ここで、４極補正
コイル（３１）は従来例の第１０図中の傾斜コイル（３
）Ｋ対応するものであるが、発生ｓ界の特性をより正確
に表現するためにこの名前を用いている。すなわち、４
極補正コイル（３１）は主に４極磁界を発生するコイル
である。Further, the four-pole correction coil (31) has four banana shapes as shown in FIG. 3B, and is installed inside the main coil (1) as shown in FIG. 1B. Here, the 4-pole correction coil (31) is the gradient coil (3) in the conventional example shown in FIG.
)K, but this name is used to more accurately express the properties of the generated s-field. That is, 4
The polar correction coil (31) is a coil that mainly generates a four-pole magnetic field.
荷電ビーム（６）の軌道の領域に発生する空間的に変化
する磁界（不均一磁界と呼ばれる）は主に４極畠界成分
と６極磁界成分とからなる。したがって、主コイル（１
）の不均一磁界を打ち消すためＫ、４極補正コイル（３
１）の他に６極磁界成分を発生する６極補正コイル（３
２）も用いるつ６極補正コイル（３２）は第３Ｃ図に示
したように６個のバナナ形コイルによって構成される。The spatially varying magnetic field (referred to as a non-uniform magnetic field) generated in the region of the orbit of the charged beam (6) mainly consists of a quadrupole Hatake field component and a sextupole magnetic field component. Therefore, the main coil (1
) to cancel the non-uniform magnetic field of K, 4-pole correction coil (3
In addition to 1), there is a 6-pole correction coil (3) that generates a 6-pole magnetic field component.
2) is also used. The six-pole correction coil (32) is composed of six banana-shaped coils as shown in FIG. 3C.
この６極補正コイル（３２）も第１Ｂ図中に示したよう
に、主コイル（１）の中産設置される。この結果、４極
補正コイル（３１）および６極補正コイル（３２）を主
コイル（１）の外に突出することｔｘ ＜設置でき、ク
ライオスタット（４）を小さくし得る。This six-pole correction coil (32) is also installed in the middle of the main coil (1), as shown in FIG. 1B. As a result, the 4-pole correction coil (31) and the 6-pole correction coil (32) can be installed to protrude outside the main coil (1), and the cryostat (4) can be made smaller.
次に、主コイル（１）の励ｉｆａ：ｉ、４極補正コイル
（３１）の励磁電流と、発生磁界との関係を第４図およ
び第５図に示す。ここで、磁気シールド体Ｃ１１）には
鉄を想定（−た。主コイル（１１の作る磁束の大部分は
磁気シールド体（１１）中を冊るので、励磁Ｗ流が大に
なると磁気シールド体（１１）が飽和して発生磁界の増
加率が小さくなる。一方、４惨補正コイル（３１）が作
る研東の多くはクライオスタット（４）の内部空間を通
るので、励磁電流と発生磁界の関係はほぼ直線的で））
る、、６極補正コイル（３２）の励磁電流と発生磁界の
関係も、４極補正コイル（３１）の場合と同じで、はぼ
直線的になる。Next, the relationship between the excitation ifa:i of the main coil (1), the excitation current of the 4-pole correction coil (31), and the generated magnetic field is shown in FIGS. 4 and 5. Here, the magnetic shield C11) is assumed to be made of iron.Since most of the magnetic flux generated by the main coil (11) travels through the magnetic shield (11), when the excitation W current becomes large, the magnetic shield (11) becomes saturated, and the rate of increase in the generated magnetic field becomes small.On the other hand, since most of the radial force generated by the four-magnetic correction coil (31) passes through the internal space of the cryostat (4), the relationship between the excitation current and the generated magnetic field decreases. is almost linear))
The relationship between the excitation current and the generated magnetic field of the six-pole correction coil (32) is also the same as that of the four-pole correction coil (31), and is almost linear.
今、荷電ビーム（６）の情、道領域の磁界を常ｉｃ均一
化するためには、主コイル（１）が発生する不均一磁界
を４極補正コイル（３１）の発生磁界お」−び６極補正
コイル（３２）の発生磁界で常に打ち消Ｊ必要がある。Now, regarding the charged beam (6), in order to make the magnetic field in the path region uniform, it is necessary to combine the non-uniform magnetic field generated by the main coil (1) with the magnetic field generated by the quadrupole correction coil (31). It is necessary to always cancel J with the magnetic field generated by the 6-pole correction coil (32).
前述のように、主コイル（１）の発生磁界は飽和特性を
有Ｌ、４極補正コイル（３１）や６極補正コイル（３２
）は飽和特性を有していないので、常に均−磁界を発生
させながら磁界の強さｆｆ増して行くため圧は主コイル
（１）の励磁電流波形と４極補正コイル（３１）の励磁
電流波形、６極袖正コイル（３２）の励′ｆ１１電流を
変える必要がある。主コイル（１）の電流に対して、不
均一磁界を打ち消すことがでざる４極補正コイル（３１
）の′＠流およびＧ極補正コイル（３２）の１ａ流を予
め実験（てよって求めておき、こり〕関係を常に満足す
るよりに各コイル（１） 、 （３１）、 （３２）の
電流を変化させれば、常に均一磁界を発生させることが
できる。As mentioned above, the magnetic field generated by the main coil (1) has saturation characteristics, and the 4-pole correction coil (31) and the 6-pole correction coil (32)
) does not have saturation characteristics, so the magnetic field strength ff increases while always generating a uniform magnetic field, so the pressure is the same as the excitation current waveform of the main coil (1) and the excitation current of the 4-pole correction coil (31). It is necessary to change the waveform and the excitation f11 current of the six-pole sleeve positive coil (32). The 4-pole correction coil (31
) and the 1a current of the G-pole correction coil (32) by experiment (determined in advance), the current of each coil (1), (31), (32) is By changing , a uniform magnetic field can be generated at all times.
なお、上記実施例ではクライオスタット（４）の全体を
磁気シールド体（１１）で囲ったものを示したが、磁気
シールド体（１１）の１部を取り除いてもよい６第６図
にこの実施例を示す。主コイル（１）の曲げ中心（荷電
ビーム（６）の曲げ中心にほぼ等しい）側の半円筒形の
磁気シールド体を取り除いである。In addition, in the above embodiment, the entire cryostat (4) is surrounded by a magnetic shield (11), but a part of the magnetic shield (11) may be removed6. This embodiment is shown in FIG. shows. The semi-cylindrical magnetic shield on the side of the bending center of the main coil (1) (approximately equal to the bending center of the charged beam (6)) is removed.
この部分は磁束を通す断面積が小さくて磁気シールドに
はあまり寄与しない。磁束は主として、上述の曲げ中心
は反対側（外周側）の磁気シールド体（１１）を通る。This part has a small cross-sectional area through which magnetic flux passes, and does not contribute much to magnetic shielding. The magnetic flux mainly passes through the magnetic shield (11) on the opposite side (outer circumferential side) from the above-mentioned bending center.
第７Ａ図および第７Ｂ図は第６図の変形例であり、曲げ
中心側の磁気シールド体（１１）の取り除く量を第６図
の場合より多くしたものである。クライオスタット（４
）が磁気シールド体（１１）からはみ出している。この
ようＫｍ成しても磁力！（１２”１は磁気シールド体（
１１）の外周側を通るので、磁気シールド効果はあまり
損なわれることはない。FIGS. 7A and 7B are modifications of FIG. 6, in which the amount of the magnetic shield (11) on the bending center side is removed more than in the case of FIG. 6. Cryostat (4
) protrudes from the magnetic shield (11). Even if Km is formed like this, it is magnetic! (12”1 is a magnetic shield (
11), the magnetic shielding effect is not significantly impaired.
一方、磁気シールド体（１１）の重量は比較的軽減され
る。On the other hand, the weight of the magnetic shield (11) is relatively reduced.
第８図は第６図に示した磁気シールド体（１１）の他の
変形例であるａ磁気シールド体（１１）の上下の板の形
をほぼ半円状圧したものである。磁気シールド体（ｔｌ
で囲まれているクライオスタット（４）の形状も半円柱
状になっている。形状を単純化して製作を容易圧してい
る。FIG. 8 shows another modification of the magnetic shield (11) shown in FIG. 6, in which the upper and lower plates of the magnetic shield (11) a are pressed into approximately semicircular shapes. Magnetic shield body (tl
The shape of the cryostat (4) surrounded by is also semi-cylindrical. The shape is simplified and manufacturing is easy.
第９図は磁気シールド体（１１）の他の実施例であり、
第２回圧対応している。半円柱の磁気シルト体（１１）
の外半周（ｌｌａ）と平面（１１１３）がダ差する付近
は磁気シールド体（１１）の他の部分に比べてコイル（
１）、（３１”ｌ、（３２）から離れている（第１Ａ図
参照）から、第９図に示Ｌ７たようにこの部分を切り取
って平板を代りに設置すると、磁気シールド体（１１）
が少１−１小さくなる。第６図、第７図、第８図圧水し
た磁気シールド体（１１）に対しても上述と同じことを
適用できる。FIG. 9 shows another embodiment of the magnetic shield (11),
Compatible with the second pressure. Semi-cylindrical magnetic silt body (11)
The area where the outer half circumference (lla) of the coil (lla) and the plane (1113) cross is different from other parts of the magnetic shield (11).
1), (31"l, and (32)) (see Figure 1A), so if this part is cut out and a flat plate is installed in its place as shown in Figure 9, the magnetic shield (11)
becomes smaller by 1-1. The same thing as described above can also be applied to the magnetic shielding body (11) that has been subjected to pressure water in FIGS. 6, 7, and 8.
上記実施例では磁気シールド（１１）をクライオスタッ
ト（４）の外部に設置１−だが、磁気シールド（１１）
を極低温部に設！して、クライオスタット中に入れても
本発明を適用できる。In the above embodiment, the magnetic shield (11) is installed outside the cryostat (4) 1-, but the magnetic shield (11)
is installed in the cryogenic section! The present invention can also be applied even if the device is placed in a cryostat.
また、多極補正コイルとして４極補正コイル（３１）、
６極補正コイルについて説明したが、勿論この極数（（
限定されるもので＆Ｊ、なく、例えば８極補正コイル、
１２極補正コイルにも適用できるのは勿論である。In addition, a 4-pole correction coil (31) as a multi-pole correction coil,
We have explained the 6-pole correction coil, but of course this number of poles ((
&J, not limited to, for example, 8-pole correction coil,
Of course, it can also be applied to a 12-pole correction coil.
以上説明したように、この発明の超ｔＩＪ偏向電磁石は
、主コイル、多極補正コイルの周囲に磁気シールド体を
設けたので、外部に対する漏れ磁界乞・小さく抑えるこ
とができるという効果がある。As explained above, the ultra-tIJ bending electromagnet of the present invention has a magnetic shielding body around the main coil and the multipolar correction coil, so that it has the effect of suppressing the leakage magnetic field to the outside.
【図面の簡単な説明】
第１Ａ図はこの発明の一実施例による超Ｎ導偏向電磁石
を示す平面図、第１Ｂ図は第１Ａ図のＩＢ−ＩＢ線に沿
う断面図、第２図は第１Ａ図、第１Ｂ図の斜視図、第３
Ａ図、第３Ｂ図および第３Ｃ図は第１Ｂ図のそれぞれの
コイルの斜視図、第４図はこの発明の主コイルの電流と
発生磁界との関係を示すグラフ、第５図はこの発明の４
極補正コイルのＭ流と発生Ｓ界との関係を示すグラフ、
第６図ないし第９図はこの発明の別の実施例のそれぞれ
の磁気シールド体を示す斜視図および断面図、第１０図
は従来の超電導偏向ｔｌｉ石の一例を示す斜視図である
。
図において、（１）は主コイル、（３１）は４極補正コ
イル、（３２）は６極補正コイル、（４）はクライオス
タット、（１１）は磁気シールド体である。
なお、図中、同一符号は同一 または相当部分を示す。[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1A is a plan view showing a super N-conducting bending electromagnet according to an embodiment of the present invention, Fig. 1B is a sectional view taken along the line IB-IB in Fig. 1A, and Fig. 2 is a Figure 1A, perspective view of Figure 1B, 3rd
Figures A, 3B, and 3C are perspective views of the respective coils in Figure 1B, Figure 4 is a graph showing the relationship between the current in the main coil of this invention and the generated magnetic field, and Figure 5 is a graph showing the relationship between the current in the main coil of this invention and the generated magnetic field. 4
A graph showing the relationship between the M flow of the polar correction coil and the generated S field,
6 to 9 are perspective views and sectional views showing respective magnetic shielding bodies according to other embodiments of the present invention, and FIG. 10 is a perspective view showing an example of a conventional superconducting deflection crystal. In the figure, (1) is a main coil, (31) is a 4-pole correction coil, (32) is a 6-pole correction coil, (4) is a cryostat, and (11) is a magnetic shielding body. In addition, the same symbols in the figures indicate the same or equivalent parts.
Claims (1)
前記磁界を調整して高均一磁界を作る多極補正コイルと
を備えた超電導偏向電磁石において、前記主コイルおよ
び前記多極補正コイルの周囲に前記磁界が外部に漏れる
のを防止する磁気シールド体を設けたことを特徴とする
超電導偏向電磁石。a main coil that generates a magnetic field to deflect the charged beam;
A superconducting bending electromagnet equipped with a multipolar correction coil that adjusts the magnetic field to create a highly uniform magnetic field, wherein a magnetic shielding body is provided around the main coil and the multipolar correction coil to prevent the magnetic field from leaking to the outside. A superconducting bending electromagnet characterized by the following:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32761288A JPH02174099A (en) | 1988-12-27 | 1988-12-27 | Superconductive deflecting electromagnet |
| GB8918872A GB2223350B (en) | 1988-08-26 | 1989-08-18 | Device for accelerating and storing charged particles |
| DE3928037A DE3928037C2 (en) | 1988-08-26 | 1989-08-24 | Device for accelerating and storing charged particles |
| US07/398,419 US5117194A (en) | 1988-08-26 | 1989-08-25 | Device for accelerating and storing charged particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32761288A JPH02174099A (en) | 1988-12-27 | 1988-12-27 | Superconductive deflecting electromagnet |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7339790A Division JPH02270308A (en) | 1990-03-26 | 1990-03-26 | Superconducting deflection electromagnet and excitation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02174099A true JPH02174099A (en) | 1990-07-05 |
Family
ID=18200999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32761288A Pending JPH02174099A (en) | 1988-08-26 | 1988-12-27 | Superconductive deflecting electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02174099A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000046999A (en) * | 1998-07-31 | 2000-02-18 | Rikagaku Kenkyusho | Uniform magnetic field generator |
| JP2008525968A (en) * | 2004-12-22 | 2008-07-17 | フォックス・チェイス・キャンサー・センター | Laser accelerated proton therapy device and its superconducting electromagnet system |
| JP2009527100A (en) * | 2006-02-15 | 2009-07-23 | バリアン・セミコンダクター・エクイップメント・アソシエイツ・インコーポレイテッド | Electromagnet with active field confinement |
| JP5112571B1 (en) * | 2012-02-13 | 2013-01-09 | 三菱電機株式会社 | Septum electromagnet and particle beam therapy system |
| WO2022209300A1 (en) * | 2021-04-01 | 2022-10-06 | 株式会社日立製作所 | Electromagnet device, control method for electromagnet device, and particle beam therapy device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63224198A (en) * | 1987-03-11 | 1988-09-19 | 日本電信電話株式会社 | Deflecting electromagnet with correction coil |
| JPS63226900A (en) * | 1987-03-16 | 1988-09-21 | Nippon Telegr & Teleph Corp <Ntt> | Deflecting electromagnet |
-
1988
- 1988-12-27 JP JP32761288A patent/JPH02174099A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63224198A (en) * | 1987-03-11 | 1988-09-19 | 日本電信電話株式会社 | Deflecting electromagnet with correction coil |
| JPS63226900A (en) * | 1987-03-16 | 1988-09-21 | Nippon Telegr & Teleph Corp <Ntt> | Deflecting electromagnet |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000046999A (en) * | 1998-07-31 | 2000-02-18 | Rikagaku Kenkyusho | Uniform magnetic field generator |
| JP2008525968A (en) * | 2004-12-22 | 2008-07-17 | フォックス・チェイス・キャンサー・センター | Laser accelerated proton therapy device and its superconducting electromagnet system |
| JP2009527100A (en) * | 2006-02-15 | 2009-07-23 | バリアン・セミコンダクター・エクイップメント・アソシエイツ・インコーポレイテッド | Electromagnet with active field confinement |
| KR101324953B1 (en) * | 2006-02-15 | 2013-11-04 | 베리안 세미콘덕터 이큅먼트 어소시에이츠, 인크. | Electromagnet with active field containment |
| JP5112571B1 (en) * | 2012-02-13 | 2013-01-09 | 三菱電機株式会社 | Septum electromagnet and particle beam therapy system |
| WO2013121503A1 (en) * | 2012-02-13 | 2013-08-22 | 三菱電機株式会社 | Septum electromagnet and particle beam therapy device |
| US8884256B2 (en) | 2012-02-13 | 2014-11-11 | Mitsubishi Electric Corporation | Septum magnet and particle beam therapy system |
| WO2022209300A1 (en) * | 2021-04-01 | 2022-10-06 | 株式会社日立製作所 | Electromagnet device, control method for electromagnet device, and particle beam therapy device |
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