JPH10125500A - Periodic magnetic field generating device - Google Patents
Periodic magnetic field generating deviceInfo
- Publication number
- JPH10125500A JPH10125500A JP28071496A JP28071496A JPH10125500A JP H10125500 A JPH10125500 A JP H10125500A JP 28071496 A JP28071496 A JP 28071496A JP 28071496 A JP28071496 A JP 28071496A JP H10125500 A JPH10125500 A JP H10125500A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- electromagnets
- electron beam
- electromagnet
- periodic magnetic
- 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.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 86
- 230000000737 periodic effect Effects 0.000 title claims abstract description 42
- 238000010894 electron beam technology Methods 0.000 claims abstract description 23
- 230000005294 ferromagnetic effect Effects 0.000 claims description 14
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 7
- 239000003574 free electron Substances 0.000 abstract description 6
- 239000004020 conductor Substances 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Particle Accelerators (AREA)
- Lasers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子ビームを利用
して、自由電子レーザー光や放射光を発生させる周期磁
場発生装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a periodic magnetic field generator for generating free electron laser light or radiation light using an electron beam.
【０００２】[0002]
【従来の技術】従来の技術を図５〜図７に示す。図５は
周期磁場発生装置を用いた自由電子レーザ（ＦＥＬ）シ
ステムを示す図。2. Description of the Related Art The prior art is shown in FIGS. FIG. 5 is a diagram showing a free electron laser (FEL) system using a periodic magnetic field generator.
【０００３】図６は従来の周期磁場発生装置の１例を示
す図。図７は従来の周期磁場発生装置のその他の例を示
す図である。図５〜図７に示すように、高いエネルギー
の電子ビーム１を電磁石１１または永久磁石１２で形成
した周期磁場中で蛇行運動させると、指向性が高く、且
つ輝度の高い放射光が得られることが知られている。FIG. 6 is a diagram showing an example of a conventional periodic magnetic field generator. FIG. 7 is a diagram showing another example of a conventional periodic magnetic field generator. As shown in FIGS. 5 to 7, when the high-energy electron beam 1 is meandering in a periodic magnetic field formed by the electromagnets 11 or the permanent magnets 12, radiation light with high directivity and high brightness can be obtained. It has been known.
【０００４】このように電磁石等による磁場を用いて放
射光を得る装置が周期磁場発生装置である。この周期磁
場発生装置は、複数の電磁石１１または永久磁石１２を
磁場の向きを交互に逆向きにして並べた磁石列を形成
し、この電磁石列２１または永久磁石列２２を電子ビー
ム１が通過する領域として、所定の空間間隙をもって対
向して設けた構成となっている。[0004] An apparatus for obtaining radiation using a magnetic field generated by an electromagnet or the like is a periodic magnetic field generator. This periodic magnetic field generator forms a magnet row in which a plurality of electromagnets 11 or permanent magnets 12 are alternately arranged with the direction of a magnetic field reversed, and the electron beam 1 passes through the electromagnet row 21 or the permanent magnet row 22. The regions are configured to be provided facing each other with a predetermined space gap.
【０００５】また、図５に示すように、周期磁場発生装
置の磁石列２３の前後に光共振器３１を配置し、周期磁
場発生装置で発生した放射光を、光共振器３１のミラ一
で反射往復させることにより、電子ビームと放射光を共
鳴させて自由電子レーザ光（ＦＥＬ）を発生させること
ができる。Further, as shown in FIG. 5, optical resonators 31 are arranged before and after the magnet row 23 of the periodic magnetic field generator, and radiation light generated by the periodic magnetic field generator is reflected by the mirror of the optical resonator 31. By performing reciprocating reflection, the electron beam and the emitted light are resonated to generate free electron laser light (FEL).
【０００６】この周期磁場発生装置から取り出される放
射光或はレーザ光の波長は、電子ビーム１のエネルギ、
周期磁場の強度、及び周期長に依存したものとなるた
め、これらの値を適切に選定することにより所望の波長
の光を発生させることが可能である。The wavelength of the emitted light or laser light extracted from the periodic magnetic field generator is determined by the energy of the electron beam 1,
Since it depends on the intensity of the periodic magnetic field and the period length, light of a desired wavelength can be generated by appropriately selecting these values.
【０００７】[0007]
【発明が解決しようとする課題】しかし、従来の技術に
は、次のような問題がある。 （１）前述のように、従来の周期磁声発生装置は、交互
に逆向きに励磁して並べられた電磁石列または永久磁石
列として構成されており、磁場の周期長は変更不可能で
あった。However, the prior art has the following problems. (1) As described above, the conventional periodic magnetic voice generator is configured as an electromagnet row or a permanent magnet row arranged by being alternately excited in the opposite direction, and the cycle length of the magnetic field cannot be changed. Was.
【０００８】このため、一定エネルギの電子ビームに対
して、放射光あるいはレーザ光の波長は、周期磁場の強
度を変化させることによってのみ変更可能となってい
た。 （２）しかし、電磁石の場合、鉄芯の飽和現象により上
限があり、また、永久磁石の場合は、対向した磁石列の
空間間隔を変化させることによってのみ磁場強度が変更
可能であるため、周期磁場発生装置によって生じる磁場
強度は大幅に変化させることが不可能であった。 （３）そのため、従来の周期磁場発生装置においては波
長可変領域が限られており、１台の周期磁場発生装置に
よる大幅な波長の変更は実現困難であり、大幅な波長の
変更を必要とする場合は、やむなく周期長の異なる周期
磁場発生装置を複数台用意し必要に応じて装置を切り換
えるか、または、電子ビームライン上にあらかじめ複数
台の周期磁場発生装置を配置しておき、入射する電子ビ
ームを切り換えて供給する必要があり、装置が高コスト
になるばかりでなく、複数台の装置を設置するため、各
々の据付調整及び電子ビームの運転調整に時間がかかる
という問題があった。For this reason, for an electron beam having a constant energy, the wavelength of the emitted light or laser light can be changed only by changing the intensity of the periodic magnetic field. (2) However, in the case of the electromagnet, there is an upper limit due to the iron core saturation phenomenon, and in the case of the permanent magnet, the magnetic field intensity can be changed only by changing the space interval between the opposed magnet rows. The magnetic field strength generated by the magnetic field generator could not be varied significantly. (3) For this reason, in the conventional periodic magnetic field generator, the wavelength variable region is limited, and it is difficult to realize a significant wavelength change by one periodic magnetic field generator, and a large wavelength change is required. In this case, it is unavoidable to prepare a plurality of periodic magnetic field generators having different cycle lengths and switch the devices as necessary, or place a plurality of periodic magnetic field generators on the electron beam line in advance, and It is necessary to switch and supply the beam, which not only increases the cost of the apparatus, but also requires installation and adjustment of each electron beam to take a long time because a plurality of apparatuses are installed.
【０００９】本発明は、上述した問題点を解決するため
になされたものであり、従来の周期磁場発生装置では困
難であった広い波長領域の放射光或いは自由電子レーザ
光を容易に発生し得る周期磁場発生装置を提供すること
を目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can easily generate radiation light or free electron laser light in a wide wavelength range, which is difficult with a conventional periodic magnetic field generator. It is an object to provide a periodic magnetic field generator.
【００１０】[0010]
（第１の手段）本発明に係る周期磁場発生装置は、
（Ａ）複数個の電磁石１１を並べて一列の電磁石列２１
とし、（Ｂ）前記電磁石列の列を、電子ビーム１の通過
する空間間隔分だけ離して、対向して配置し、（Ｃ）前
記電磁石１１の向きを複数個づつセットにして、順次に
逆向きに励磁し、電子ビーム１の通過軌道上での磁場の
向きが交互に逆向きになるように各電磁石を励磁するこ
とを特徴とする。 （第２の手段）本発明に係る周期磁場発生装置は、第１
の手段において、複数個づつセットにして同方向に励磁
された電磁石１１の磁極どうしを、強磁性体カバー５１
で短絡することを特徴とする。 （第３の手段）本発明に係る周期磁場発生装置は、第２
の手段において、磁性体カバー５１の形状をテーパ形状
にしたことを特徴とする。(First Means) A periodic magnetic field generator according to the present invention comprises:
(A) A plurality of electromagnets 11 are arranged to form one electromagnet row 21
(B) the rows of the electromagnet rows are arranged facing each other with an interval of a space through which the electron beam 1 passes, and (C) the direction of the electromagnets 11 is set in plurals, and the rows are sequentially reversed. It is characterized in that the electromagnets are excited so that the directions of the magnetic fields on the passage trajectory of the electron beam 1 are alternately reversed. (Second Means) The periodic magnetic field generator according to the present invention
In the means, the magnetic poles of the electromagnet 11 excited in the same direction by setting a plurality of magnets in the same direction are connected to the ferromagnetic cover 51.
Characterized by short-circuiting. (Third Means) The periodic magnetic field generating apparatus according to the present invention
In the above means, the shape of the magnetic material cover 51 is tapered.
【００１１】すなわち、本発明装置は、 （１）多数個の電磁石を並べて一列の電磁石列とし、電
子ビームの通過する空間間隔分だけ離して、前記電磁石
列の２列を対向して配置したものであり、 （２）電子ビームの通過軌道上での磁場の向きが交互に
逆向きになるように各電磁石を励磁することを特徴とす
る周期磁場発生装置において、前記電磁石の向きを複数
個づつセットにして逆向きに励磁することを可能とす
る。 （３）また、前記複数個づつセットにして同方向に励磁
された電磁石の磁極どうしを強磁性体カバーで短絡する
構造を設けたことを特徴とする。 （４）また、前記磁性体カバーの形状を最適化してテー
パー形状（磁石列の側面から見た板断面形状が台形また
は半月形等である形状）とすることにより、整数倍周期
長時にも正弦波の磁場形状を持つ理想的な周期磁場を供
給することを可能にする。That is, the device of the present invention is as follows: (1) A plurality of electromagnets are arranged to form a single row of electromagnets, and two electromagnet rows are arranged facing each other with a space between them for passing an electron beam. (2) In the periodic magnetic field generating apparatus, each of the electromagnets is excited so that the direction of the magnetic field on the electron beam passing orbit is alternately opposite to each other. It is possible to excite in the opposite direction by setting. (3) In addition, a structure is provided in which the magnetic poles of the electromagnets excited in the same direction are short-circuited by a ferromagnetic cover in sets of a plurality of the magnets. (4) Further, by optimizing the shape of the magnetic material cover to have a tapered shape (a shape in which the plate cross-sectional shape is a trapezoidal shape or a half-moon shape as viewed from the side surface of the magnet row), a sinusoidal shape can be obtained even at an integral multiple period length. It is possible to supply an ideal periodic magnetic field having a wave magnetic field shape.
【００１２】したがって、次のように作用する。 （１）本発明装置により、従来の周期磁場発生装置にお
いては単一の周期長でのみ動作が可能であったのに対
し、複数個の電磁石づつセットにして逆向きに励磁する
ことにより、基本となる周期長の複数（整数）倍の周期
長を得ることが可能となる。Therefore, the operation is as follows. (1) According to the device of the present invention, the conventional periodic magnetic field generator can operate only with a single cycle length, but by setting a plurality of electromagnets and exciting them in the opposite direction, It is possible to obtain a cycle length that is a plurality (integer) times of the cycle length.
【００１３】よって、個々の電磁石の励磁方向を選択す
ることにより、可変周期長の周期磁場発生装置を提供す
ることが可能となる。 （２）また、上記周期磁場発生装置を整数倍の周期長に
て動作させた場合には、同方向に励磁された磁極が不連
続に存在する為、磁場の形状は理想的な正弦波とはなら
ずに高調波成分の磁場を含むが、本発明装置において
は、同方向に励磁された電磁石の磁極どうしを、強磁性
体カバーにより短絡させることにより、磁極面を通る磁
力線を均一化し、高調波成分の無い理想的な正弦波形状
を持つ、整数倍周期長の周期磁場が実現可能になる。Therefore, by selecting the excitation direction of each electromagnet, it is possible to provide a periodic magnetic field generator having a variable period length. (2) When the periodic magnetic field generator is operated with a cycle length that is an integral multiple, the shape of the magnetic field is an ideal sine wave because the magnetic poles excited in the same direction are discontinuous. However, in the device of the present invention, the magnetic poles of the electromagnets excited in the same direction are short-circuited by the ferromagnetic cover, so that the lines of magnetic force passing through the magnetic pole surfaces are uniformized. A periodic magnetic field having an ideal sine wave shape without harmonic components and having an integral multiple period length can be realized.
【００１４】[0014]
（第１の実施の形態）本発明の第１の実施の形態を図１
〜図４に示す。図１は、本発明の第１の実施の形態に係
る装置の構成図。(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
4 to FIG. FIG. 1 is a configuration diagram of an apparatus according to a first embodiment of the present invention.
【００１５】図２は、第１の実施の形態の係る装置の作
用効果の説明図。図３は、第１の実施の形態の係る装置
における中心軸上の磁場分布図。図４は、第１の実施の
形態の係る装置の形状を最適化した磁極カバーの説明
図。FIG. 2 is an explanatory diagram of the operation and effect of the device according to the first embodiment. FIG. 3 is a magnetic field distribution diagram on a central axis in the device according to the first embodiment. FIG. 4 is an explanatory diagram of a magnetic pole cover in which the shape of the device according to the first embodiment is optimized.
【００１６】本発明装置について、図１に基づき説明す
る。本発明の周期磁場発生装置は、図１に示すように電
子ビーム１が通過する空間間隙を挟んで対向して配置さ
れる電磁石列２１をもって構成される。The apparatus of the present invention will be described with reference to FIG. As shown in FIG. 1, the periodic magnetic field generator according to the present invention includes an electromagnet row 21 which is arranged to face the space between the electron beams 1 with a space therebetween.
【００１７】１組の電磁石列２１は、複数個の電磁石１
１と、強磁性体ヨーク２から構成される。そして、電磁
石１１は、強磁性体片４を芯として、導体３を巻き回し
た構造であり、１定周期λで磁性体ヨーク２に固定され
磁気回路を構成する。One set of electromagnet rows 21 includes a plurality of electromagnets 1.
1 and a ferromagnetic yoke 2. The electromagnet 11 has a structure in which the conductor 3 is wound around the ferromagnetic piece 4 as a core, and is fixed to the magnetic yoke 2 at one fixed period λ to form a magnetic circuit.
【００１８】電磁石１１は、励磁用の電源に接続されて
おり、個々の電磁石１１について独立に励磁方向の切替
が可能な構造になっている。電磁石１１の電子ビーム１
側の面には、磁場を短絡するための強磁性体カバー５が
取付く構造となっており、必要に応じて強磁性体カバ−
５を取り付けたり、取り外したりすることが出来る。The electromagnet 11 is connected to a power source for excitation, and has a structure in which the excitation direction of each electromagnet 11 can be switched independently. Electron beam 1 of electromagnet 11
On the side surface, a ferromagnetic cover 5 for short-circuiting a magnetic field is attached.
5 can be attached and detached.
【００１９】形状を最適化した磁極カバーとは、図４に
示すように、 （１）テーパ形状の場合には、磁極カバーの両端をテー
パ形状としたもの。 （２）その他の形状の場合には、フラット形状としたも
のなどがある。As shown in FIG. 4, the pole cover having the optimized shape is as follows: (1) When the pole cover is tapered, both ends of the pole cover are tapered. (2) Other shapes include a flat shape.
【００２０】次に本発明の作用効果について説明する。 （Ａ）図２（ａ）に示すように、隣り合う電磁石１１の
磁場の向きを逆向きに励磁した場合には、電子ビーム１
の軸上での磁場分布は、図３（ａ）に示す様に、λの周
期長を持つ周期磁場となる。 （Ｂ）図２（ｂ）に示すように、隣り合う電磁石１１に
ついて、２個づつセットにして順次磁場の向きを逆向き
に励磁した場合には、電子ビームｌ軸上での磁場分布
は、図３（ｂ）に示すように、λの２倍の周期長λ′を
持つ磁場となる。Next, the operation and effect of the present invention will be described. (A) As shown in FIG. 2A, when the magnetic field of the adjacent electromagnet 11 is excited in the opposite direction, the electron beam 1
The magnetic field distribution on the axis is a periodic magnetic field having a period length of λ, as shown in FIG. (B) As shown in FIG. 2 (b), when two adjacent electromagnets 11 are sequentially set and the direction of the magnetic field is excited in the opposite direction, the magnetic field distribution on the electron beam l-axis becomes As shown in FIG. 3B, the magnetic field has a period length λ ′ twice as long as λ.
【００２１】但しこの場合、同方向に励磁された磁極が
不連続に存在する為に、磁場形状は理想的な正弦波とは
ならず、高周波成分を含んだ磁場となる。 （Ｃ）図２（ｃ）に示すように、同方向に励磁された電
磁石１１の磁極どうしを強磁性体カバー５で短絡するよ
うに設置した場合には、各電磁石で発生した磁力線が強
磁性体カバー５の中で平均化され、図３（ｃ）に示すよ
うな高調波成分の小さい整数倍（この場合は２倍）の周
期長λ′を持つ磁場が得られる。 （Ｄ）図２（ｄ）に示すように、テーパ形状を持つ強磁
性体カバー５１を設置し、強磁性体カバー５１の形状を
高調波成分を抑制すべく最適化（この場合はテーパ形
状）した場合には、図３（ｄ）に示すような理想的な整
数倍（この場合は２倍）の周期長λ′を持つ磁場が得ら
れる。 この様にして、本発明により１台の周期磁場発生装置
で、異なる周期長の周期磁場が発生可能となり、従来の
ように複数台の装置を製作する必要がなくなる。However, in this case, since the magnetic poles excited in the same direction are discontinuous, the magnetic field shape does not become an ideal sine wave, but becomes a magnetic field containing a high-frequency component. (C) As shown in FIG. 2 (c), when the magnetic poles of the electromagnets 11 excited in the same direction are installed so as to be short-circuited by the ferromagnetic cover 5, the lines of magnetic force generated by each electromagnet become ferromagnetic. A magnetic field averaged in the body cover 5 and having a period length λ ′ of a small integral multiple (in this case, twice) of the harmonic component as shown in FIG. 3C is obtained. (D) As shown in FIG. 2D, a ferromagnetic cover 51 having a tapered shape is provided, and the shape of the ferromagnetic cover 51 is optimized to suppress harmonic components (in this case, a tapered shape). In this case, a magnetic field having a period length λ ′ of an ideal integral multiple (in this case, twice) as shown in FIG. 3D is obtained. Thus, according to the present invention, a single periodic magnetic field generator can generate periodic magnetic fields having different cycle lengths, and there is no need to manufacture a plurality of devices as in the related art.
【００２２】[0022]
【発明の効果】本発明は前述のように構成されているの
で、以下に記載するような効果を奏する。 （１）本発明によれば、広い領域にわたり所定の波長
（可変）の放射光またはレーザ光を、１台の周期磁場発
生装置により実現可能となる。 （２）そのため、従来の複数装置を本発明装置１台に置
き換えることができ、従来の入射電子ビームの切り替え
に比べて、短時間でかつ安価、簡便に周期長の切替作業
が可能になる。Since the present invention is configured as described above, it has the following effects. (1) According to the present invention, radiation light or laser light of a predetermined wavelength (variable) over a wide area can be realized by one periodic magnetic field generator. (2) Therefore, a plurality of conventional devices can be replaced with one device of the present invention, and the switching operation of the cycle length can be performed in a shorter time, at lower cost, and more simply than in the conventional switching of the incident electron beam.
【図１】本発明の第１の実施の形態に係る装置の構成
図。FIG. 1 is a configuration diagram of an apparatus according to a first embodiment of the present invention.
【図２】第１の実施の形態の係る装置の作用効果の説明
図。FIG. 2 is an explanatory diagram of the operation and effect of the device according to the first embodiment.
【図３】第１の実施の形態の係る装置における中心軸上
の磁場分布図。FIG. 3 is a magnetic field distribution diagram on a central axis in the device according to the first embodiment.
【図４】第１の実施の形態の係る装置の形状を最適化し
た磁極カバーの説明図。FIG. 4 is an explanatory diagram of a magnetic pole cover in which the shape of the device according to the first embodiment is optimized.
【図５】周期磁場発生装置を用いた自由電子レーザ（Ｆ
ＥＬ）システムを示す図。FIG. 5 shows a free electron laser (F) using a periodic magnetic field generator.
FIG. 1 illustrates an EL) system.
【図６】従来の周期磁場発生装置の１例を示す図。FIG. 6 is a diagram showing an example of a conventional periodic magnetic field generator.
【図７】従来の周期磁場発生装置のその他の例を示す
図。FIG. 7 is a diagram showing another example of a conventional periodic magnetic field generator.
１…電子ビーム ２…強磁性体ヨーク ３…導体 ４…強磁性体片 ５…強磁性体カバー １１…電磁石 １２…永久磁石 ２１…電磁石列 ２２…永久磁石列 ２３…磁石列 ３１…光共振器 ３２…加速管 ３３…ビームダンプ ５１…形状を最適化した磁極カバー DESCRIPTION OF SYMBOLS 1 ... Electron beam 2 ... Ferromagnetic yoke 3 ... Conductor 4 ... Ferromagnetic piece 5 ... Ferromagnetic cover 11 ... Electromagnet 12 ... Permanent magnet 21 ... Electromagnet 22 ... Permanent magnet row 23 ... Magnet row 31 ... Optical resonator 32 ... Accelerator tube 33 ... Beam dump 51 ... Magnetic pole cover with optimized shape
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井上 典亮 兵庫県神戸市兵庫区和田崎町一丁目１番１ 号 三菱重工業株式会社神戸造船所内 (72)発明者 池田 直昭 兵庫県神戸市兵庫区和田崎町一丁目１番１ 号 三菱重工業株式会社神戸造船所内 (72)発明者 山中 敏行 兵庫県神戸市兵庫区和田崎町一丁目１番１ 号 三菱重工業株式会社神戸造船所内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Noriaki Inoue 1-1-1, Wadazakicho, Hyogo-ku, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries, Ltd. 1-1-1 Wadazakicho Mitsubishi Heavy Industries, Ltd., Kobe Shipyard (72) Inventor Toshiyuki Yamanaka 1-1-1, Wadazakicho, Hyogo-ku, Kobe, Hyogo Prefecture Mitsubishi Heavy Industries, Ltd.Kobe Shipyard
Claims (3)
列の電磁石列（２１）とし、（Ｂ）前記電磁石列を、電
子ビーム（１）の通過する空間間隔分だけ離して、対向
して配置し、（Ｃ）前記電磁石（１１）の向きを複数個
づつセットにして、順次に逆向きに励磁し、電子ビーム
（１）の通過軌道上での磁場の向きが交互に逆向きにな
るように各電磁石を励磁することを特徴とする周期磁場
発生装置。(A) A plurality of electromagnets (11) are arranged to form a row of electromagnets (21), and (B) the electromagnet rows are separated from each other by a space interval through which an electron beam (1) passes. (C) A plurality of sets of the electromagnets (11) are set in a plurality of directions, and the magnets are sequentially excited in the opposite directions, and the directions of the magnetic fields on the passage trajectory of the electron beam (1) are alternately opposite. A periodic magnetic field generator characterized by exciting each electromagnet such that
た電磁石（１１）の磁極どうしを、強磁性体カバー（５
１）で短絡することを特徴とする請求項１に記載の周期
磁場発生装置。The magnetic poles of the electromagnets (11) excited in the same direction in sets of a plurality of pieces are connected to a ferromagnetic cover (5).
2. The periodic magnetic field generator according to claim 1, wherein a short circuit occurs in 1).
にしたことを特徴とする請求項２に記載の周期磁場発生
装置。3. The periodic magnetic field generator according to claim 2, wherein the shape of the magnetic material cover (51) is tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28071496A JP3434146B2 (en) | 1996-10-23 | 1996-10-23 | Periodic magnetic field generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28071496A JP3434146B2 (en) | 1996-10-23 | 1996-10-23 | Periodic magnetic field generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10125500A true JPH10125500A (en) | 1998-05-15 |
| JP3434146B2 JP3434146B2 (en) | 2003-08-04 |
Family
ID=17628933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28071496A Expired - Fee Related JP3434146B2 (en) | 1996-10-23 | 1996-10-23 | Periodic magnetic field generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3434146B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027001A (en) * | 2005-07-20 | 2007-02-01 | Natl Inst Of Radiological Sciences | High frequency acceleration cavity and equipment |
| WO2010146628A1 (en) * | 2009-06-18 | 2010-12-23 | 株式会社日立製作所 | Insertion light source |
| JP2012160408A (en) * | 2011-02-02 | 2012-08-23 | Institute Of Physical & Chemical Research | Undulator magnet array and undulator |
| US12414220B2 (en) | 2019-10-11 | 2025-09-09 | Kabushiki Kaisha Toshiba | High-frequency acceleration cavity core and high-frequency acceleration cavity in which same is used |
-
1996
- 1996-10-23 JP JP28071496A patent/JP3434146B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027001A (en) * | 2005-07-20 | 2007-02-01 | Natl Inst Of Radiological Sciences | High frequency acceleration cavity and equipment |
| WO2010146628A1 (en) * | 2009-06-18 | 2010-12-23 | 株式会社日立製作所 | Insertion light source |
| JP2012160408A (en) * | 2011-02-02 | 2012-08-23 | Institute Of Physical & Chemical Research | Undulator magnet array and undulator |
| US12414220B2 (en) | 2019-10-11 | 2025-09-09 | Kabushiki Kaisha Toshiba | High-frequency acceleration cavity core and high-frequency acceleration cavity in which same is used |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3434146B2 (en) | 2003-08-04 |
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