JP3194103B2 - Wiggler electromagnet - Google Patents
Wiggler electromagnetInfo
- Publication number
- JP3194103B2 JP3194103B2 JP03771292A JP3771292A JP3194103B2 JP 3194103 B2 JP3194103 B2 JP 3194103B2 JP 03771292 A JP03771292 A JP 03771292A JP 3771292 A JP3771292 A JP 3771292A JP 3194103 B2 JP3194103 B2 JP 3194103B2
- Authority
- JP
- Japan
- Prior art keywords
- wiggler
- electromagnet
- base
- side plate
- shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Particle Accelerators (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、電子シンクロトロンや
電子蓄積リングに使用され、ビームの軌道にうねりを生
じさせてシンクロトロン放射を発生させるための超伝導
ウィグラに関し、特にウィグラ電磁石の形状に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting wiggler used in an electron synchrotron or an electron storage ring to generate undulations in a beam trajectory to generate synchrotron radiation, and more particularly to a shape of a wiggler electromagnet. .
【０００２】[0002]
【従来の技術】超伝導ウィグラは、少なくとも３極のウ
ィグラ電磁石より構成される。この超伝導ウィグラは、
例えば、図３に示すように電子蓄積リングにＸ線源とし
て挿入される。すなわち、ビーム軌道（Ｚ軸）に沿っ
て、３個のウィグラ電磁石（コイルのみ図示）３１乃至
３３を配置し、さらに、ウィグラ電磁石（コイルのみ図
示）３４乃至３６を、ビーム軌道を挟んでウィグラ電磁
石３１乃至３３にそれぞれ対向配置している。これらの
電磁石３１乃至３６が発生する磁界は、図３に矢印Ｂで
示すようにｘ軸に平行であるが、中央に位置する電磁石
３２及び３５の極性と、その左右に位置する電磁石３１
及び３４、３３及び３６の極性とが逆になっている。2. Description of the Related Art A superconducting wiggler comprises at least a three-pole wiggler electromagnet. This superconducting wiggler
For example, as shown in FIG. 3, it is inserted as an X-ray source into an electron storage ring. That is, three wiggler electromagnets (only coils are shown) 31 to 33 are arranged along the beam trajectory (Z axis), and wiggler electromagnets (only coils are shown) 34 to 36 31 to 33 are disposed to face each other. The magnetic field generated by these electromagnets 31 to 36 is parallel to the x-axis as shown by arrow B in FIG. 3, but the polarities of electromagnets 32 and 35 located at the center and electromagnets 31
And 34, 33 and 36 have opposite polarities.
【０００３】図３の超伝導ウィグラをｘ軸方向から見た
のが図４である。ｚ軸上にあった電子ビームの軌道４１
は、ウィグラの発生する磁界により図４に破線で示すよ
うにｙ軸方向に偏向し、放射光（Ｘ線）４２が出射す
る。FIG. 4 shows the superconducting wiggler of FIG. 3 viewed from the x-axis direction. The trajectory 41 of the electron beam on the z-axis
Is deflected in the y-axis direction by the magnetic field generated by the wiggler as shown by the broken line in FIG. 4, and the radiated light (X-ray) 42 is emitted.
【０００４】この様な、超伝導ウィグラでは、ビーム光
学上、ビーム偏り方向、即ち、ｙ軸方向に均一な磁場を
発生する電磁石が必要とされる。[0004] Such a superconducting wiggler requires an electromagnet that generates a uniform magnetic field in the beam deflection direction, that is, in the y-axis direction, in terms of beam optics.
【０００５】従来、ビーム偏り方向に均一な磁場を発生
するウィグラ電磁石として、図５（ａ）及び（ｂ）に示
すように、レーストラック型のものが知られている。こ
の電磁石は、レーストラック型、即ち、円形部５１と直
線部５２とで構成された形状を有する側板部５３と側板
部５３と相似形の基部５４とを有する磁極５５と、基部
５４に巻回されたコイル５６とを有している。Conventionally, as a wiggler electromagnet which generates a uniform magnetic field in the beam deflection direction, a racetrack type as shown in FIGS. 5 (a) and 5 (b) is known. The electromagnet is wound around a base track 54, that is, a racetrack type, that is, a magnetic pole 55 having a side plate 53 having a shape composed of a circular portion 51 and a linear portion 52, a base 54 having a similar shape to the side plate 53. And the coil 56 formed.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
ウィグラ電磁石はコイルを巻回する磁極の基部がレース
トラック型であるため、そこに巻回されるコイルもレー
ストラック型となる。即ち、基部に巻回されているコイ
ルとしての線材には、直線部分が存在する。線材は電磁
石を励磁したときに、ローレンツ力を受けるが、この
時、線材の円形部分は、線材張力によって基部に押し付
けられ固定されているが、直線部分は基部に沿っている
だけで固定されていない。従って、線材の直線部分はロ
ーレンツ力を受けると動いてしまう。この動きは線材に
摩擦熱を発生させ、線材の温度上昇により、線材に流れ
る電流にクエンチを発生させるという問題点がある。However, in the conventional wiggler electromagnet, since the base of the magnetic pole for winding the coil is of a race track type, the coil wound therearound is also of a race track type. That is, the wire as the coil wound around the base has a straight portion. When the electromagnet is excited, the wire receives Lorentz force.At this time, the circular portion of the wire is pressed and fixed to the base by the wire tension, but the straight portion is fixed only along the base. Absent. Therefore, the linear portion of the wire moves when it receives Lorentz force. This movement generates frictional heat in the wire, and there is a problem that a quench occurs in the current flowing through the wire due to a rise in the temperature of the wire.
【０００７】本発明は、ビーム偏り方向に均一な磁場を
発生させることができ、しかも線材の動きを防ぐことが
できるウィグラ電磁石を提供することを目的とする。An object of the present invention is to provide a wiggler electromagnet capable of generating a uniform magnetic field in a beam deviating direction and preventing movement of a wire.
【０００８】[0008]
【課題を解決するための手段】本発明によれば、側板部
と該側板部の一面から該面に鉛直方向に延びる基部とを
有する磁極と、前記基部に巻回されたコイルとを備えた
ウィグラ電磁石において、前記側板部は、前記一面の形
状がレーストラック型であり、前記基部は、前記一面の
実質的中央に位置し、かつ前記一面に平行な断面形状が
常に正の曲率を有する形状であり、前記コイルは、その
形状が前記基部の形状に従って常に正の曲率を有する形
状となり、前記側板部の前記一面の形状と異なっている
ことを特徴とするウィグラ電磁石が得られる。According to the present invention, in order to solve the problems], a pole and a base extending from one surface of the side plate portion <br/> a side plate portion in the vertical direction to said surface, wound around the base coil in wiggler electromagnet with bets, the side plate portion, the shape of the one surface
Jo is a racetrack, wherein the base is located in substantially the center of the one surface, and a shape having a constantly positive curvature parallel cross section to said one side, the coil, the
Shape whose shape always has a positive curvature according to the shape of the base
And a shape different from the shape of the one surface of the side plate portion is obtained.
【０００９】[0009]
【実施例】以下に図面を参照して本発明の実施例を説明
する。図１に本発明の一実施例を示す。本実施例のウィ
グラ電磁石は磁極１１と、コイル１２とを有している。
磁極１１は、側板部１３と基部１４とを有し、側板部１
３は、レーストラック型、即ち、直線部と円形部とを有
する従来と同様の形状である。また、基部１４は、側板
部１３の面１５に平行な断面の形状が、常に正の曲率を
有するように本実施例では円形（曲率を正の所定値）と
している。この基部１４は、側板部の一面の中央、即
ち、面１５に垂直で、側板部の重心を通る直線上に本部
の重心が位置するように、側板部１３と共に一体成形で
形成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. The wiggler electromagnet of this embodiment has a magnetic pole 11 and a coil 12.
The magnetic pole 11 has a side plate 13 and a base 14, and the side plate 1
Reference numeral 3 denotes a race track type, that is, a shape similar to the conventional one having a straight portion and a circular portion. In the present embodiment, the base 14 has a circular shape (the curvature is a predetermined positive value) so that the shape of the cross section parallel to the surface 15 of the side plate portion 13 always has a positive curvature. The base portion 14 is formed integrally with the side plate portion 13 so that the center of gravity of the head portion is located on the center of one surface of the side plate portion, that is, on a straight line passing through the center of gravity of the side plate portion and perpendicular to the surface 15.
【００１０】本実施例では、コイル１２が円形の基部１
４に巻回されているため、コイルを構成する線材は、そ
の張力によって、基部１４に押し付けられ固定される。
即ち、本実施例の電磁石では、励磁を行って、線材にロ
ーレンツ力が働いても線材は動かない。In this embodiment, the coil 12 has a circular base 1.
4, the wire constituting the coil is pressed against and fixed to the base 14 by the tension.
That is, in the electromagnet of the present embodiment, the wire is not moved even if the excitation is performed and the Lorentz force acts on the wire.
【００１１】なお、本実施例では、基部１４の断面の形
状を円形としたが、断面形状がなす閉曲線（外周線）が
常に正の曲率を有していれば良い。換言すれば、断面形
状がなす閉曲線が常に外側に凸で（外周上の一点と曲率
円の中心点とを結ぶ線が常に閉曲線の内部を通る）、直
線部分や、凹部がなければ良い。In this embodiment, the cross-sectional shape of the base 14 is circular, but it is sufficient that the closed curve (outer peripheral line) formed by the cross-sectional shape always has a positive curvature. In other words, the closed curve formed by the cross-sectional shape is always convex outward (the line connecting one point on the outer circumference and the center point of the curvature circle always passes through the inside of the closed curve), and it is sufficient if there is no linear portion or concave portion.
【００１２】次に、本発明に係るウィグラ電磁石を作製
し、その特性の測定を行った。特性の測定は、図３及び
図４に示すように電磁石を配置して、同じく図３及び図
４に示すようにｘ、ｙ、及びｚ軸を取ったときの、ビー
ム軌道の偏向が最も大きい位置、即ち、図４に示すｙ軸
上で行った。ここで、原点Ｏ（図３参照）、即ち、
（ｘ，ｙ，ｚ）＝（０，０，０）における磁界の強さを
Ｂ0 とし、（ｘ，ｙ，ｚ）＝（０，ｙ，０）における磁
界の強さＢをｙの関数として測定し、ΔＢ＝Ｂ0 −Ｂを
求めて、ｙとΔＢ／Ｂとの関係を図示した。図２には、
本発明のウィグラ電磁石の特性２１と円形ウィグラ電磁
石の特性２２とを示した。なお、図２に示されているｙ
0 は、ビーム偏向距離の２倍程度の値である。Next, a wiggler electromagnet according to the present invention was manufactured, and its characteristics were measured. In the measurement of the characteristics, the deflection of the beam trajectory is largest when the electromagnet is arranged as shown in FIGS. 3 and 4 and the x, y, and z axes are also taken as shown in FIGS. The measurement was performed on the position, that is, on the y-axis shown in FIG. Here, the origin O (see FIG. 3), that is,
The magnetic field strength at (x, y, z) = (0, 0, 0) is B 0, and the magnetic field strength B at (x, y, z) = (0, y, 0) is a function of y. , And ΔB = B 0 −B was determined, and the relationship between y and ΔB / B was illustrated. In FIG.
A characteristic 21 of the wiggler electromagnet of the present invention and a characteristic 22 of the circular wiggler electromagnet are shown. Note that y shown in FIG.
0 is a value about twice the beam deflection distance.
【００１３】図２から明らかなように、本発明のウィグ
ラ電磁石は、円形ウィグラ電磁石に比べて、ΔＢ／Ｂが
０に近く、ｙ軸方向の磁界の強さの変化が少ない、磁界
が均一な電磁石であることが分かる。As is apparent from FIG. 2, the wiggler electromagnet of the present invention has ΔB / B close to 0, a small change in the magnetic field strength in the y-axis direction, and a uniform magnetic field as compared with the circular wiggler electromagnet. It turns out that it is an electromagnet.
【００１４】[0014]
【発明の効果】本発明によれば、レーストラック型の側
板部を有する磁極の基部の断面形状を常に正の曲率を有
する形状としたことで、コイルを構成する線材がその張
力により基部に押し付けられ固定されるウィグラ電磁石
を提供することができる。According to the present invention, the cross-sectional shape of the base of the magnetic pole having the racetrack-type side plate is always a shape having a positive curvature, so that the wire constituting the coil is pressed against the base by the tension. A wiggler electromagnet that is fixed and fixed can be provided.
【図１】本発明の一実施例を示し、（ａ）は正面図、
（ｂ）は（ａ）におけるＡ線断面図およびＢ線断面図で
ある。FIG. 1 shows an embodiment of the present invention, wherein (a) is a front view,
(B) is the sectional view on the A line and the B line in (a).
【図２】本発明に係るウィグラ電磁石の特性を示すグラ
フである。FIG. 2 is a graph showing characteristics of a wiggler electromagnet according to the present invention.
【図３】超伝導ウィグラを説明するための電磁石配置図
である。FIG. 3 is an electromagnet arrangement diagram for explaining a superconducting wiggler.
【図４】図３の超伝導ウィグラをｘ軸方向から見た図で
ある。FIG. 4 is a view of the superconducting wiggler of FIG. 3 as viewed from the x-axis direction.
【図５】従来のウィグラ電磁石を示し、（ａ）は正面
図、（ｂ）は（ａ）におけるＡ線断面図およびＢ線断面
図である。5A and 5B show a conventional wiggler electromagnet, wherein FIG. 5A is a front view, and FIG. 5B is a cross-sectional view taken along line A and B in FIG.
１１ 磁極 １２ コイル １３ 側板部 １４ 基部 １５ 面 ２１ 本発明に係るウィグラ電磁石の磁界特性 ２２ 円形ウィグラ電磁石の磁界特性 ３１乃至３６ ウィグラ電磁石 ４１ ビーム軌道 ４２ 放射光 ５１ 円形部 ５２ 直線部 ５３ 側板部 ５４ 基部 ５５ 磁極 ５６ コイル REFERENCE SIGNS LIST 11 magnetic pole 12 coil 13 side plate 14 base 15 surface 21 magnetic field characteristics of wiggler electromagnet according to the present invention 22 magnetic field characteristics of circular wiggler electromagnet 31 to 36 wiggler electromagnet 41 beam orbit 42 emitted light 51 circular part 52 linear part 53 side plate 54 base 55 magnetic pole 56 coil
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H05H 13/04 G21K 1/093 H01F 7/20 H05H 7/04 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H05H 13/04 G21K 1/093 H01F 7/20 H05H 7/04
Claims (2)
方向に延びる基部とを有する磁極と、前記基部に巻回さ
れたコイルとを備えたウィグラ電磁石において、前記側板部は、前記一面の形状がレーストラック型であ
り、 前記基部は、前記一面の実質的中央に位置し、かつ前記
一面に平行な断面形状が常に正の曲率を有する形状であ
り、 前記コイルは、その形状が前記基部の形状に従って常に
正の曲率を有する形状となり、前記側板部の前記一面の
形状と異なっている ことを特徴とするウィグラ電磁石。And 1. A pole having a base extending from one surface of the side plate portion and the side plate portion in the vertical direction to said surface, in a wiggler electromagnet having a coil wound on said base, said side plates, the Race track type on one side
Ri, the base is shaped der having substantially center located, and always a positive curvature parallel cross section to said one side of said one surface
The coil is always shaped according to the shape of the base.
Become a shape having a positive curvature, of the one side of the side plate portion
A wiggler electromagnet characterized by having a different shape .
る請求項１記載のウィグラ電磁石。2. The wiggler electromagnet according to claim 1, wherein the curvature is a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03771292A JP3194103B2 (en) | 1992-02-25 | 1992-02-25 | Wiggler electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03771292A JP3194103B2 (en) | 1992-02-25 | 1992-02-25 | Wiggler electromagnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05234700A JPH05234700A (en) | 1993-09-10 |
| JP3194103B2 true JP3194103B2 (en) | 2001-07-30 |
Family
ID=12505135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03771292A Expired - Fee Related JP3194103B2 (en) | 1992-02-25 | 1992-02-25 | Wiggler electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3194103B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8550044B2 (en) | 2009-01-20 | 2013-10-08 | Brp-Powertrain Gmbh & Co. Kg | Air spring system for an internal combustion engine |
-
1992
- 1992-02-25 JP JP03771292A patent/JP3194103B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8550044B2 (en) | 2009-01-20 | 2013-10-08 | Brp-Powertrain Gmbh & Co. Kg | Air spring system for an internal combustion engine |
| US8813697B2 (en) | 2009-01-20 | 2014-08-26 | Brp-Powertrain Gmbh & Co. Kg | Air spring system for an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05234700A (en) | 1993-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0306966B1 (en) | Bending magnet | |
| US5117194A (en) | Device for accelerating and storing charged particles | |
| US10332718B1 (en) | Compact deflecting magnet | |
| JPS62186500A (en) | Charged beam device | |
| JP3194103B2 (en) | Wiggler electromagnet | |
| JP6393929B1 (en) | Magnet for undulator, undulator and synchrotron radiation generator | |
| US5140568A (en) | Photomagnetic recording and erasing apparatus having magnetic field generating device including a coil and a recording media facing member which extends beyond the coil | |
| JPS5953658B2 (en) | electronic lens | |
| JP2700687B2 (en) | Wiggler equipment | |
| JP2935082B2 (en) | Normal conducting magnet type electron storage ring | |
| JP2501380B2 (en) | Bending electromagnet for accelerator | |
| JP3065988B2 (en) | Normal conduction type bending electromagnet | |
| JPH0753280Y2 (en) | Bending electromagnet for SOR device | |
| JPH0474822B2 (en) | ||
| JP3172888B2 (en) | Superconducting wiggler device | |
| JP4181082B2 (en) | Magnetic field generator for use in Rutherford backscattering analyzer | |
| JPH04242196A (en) | Controlling of magnetic field intensity in magnetic circuit for insertion light source | |
| JP2993185B2 (en) | Charged particle beam transport device | |
| JPS63224230A (en) | X-ray exposure device | |
| KR0147039B1 (en) | 4-pole electromagnet of radiation accelerator | |
| KR970051780A (en) | Cathode ray tube display | |
| JPH04147100A (en) | Superconducting deflecting electromagnet | |
| JPH06151096A (en) | Beam duct for accelerator | |
| JPH02306599A (en) | Superconducting helical wiggler | |
| JPH08124700A (en) | Circularly polarized undulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20010425 |
|
| LAPS | Cancellation because of no payment of annual fees |