JPH0795479B2 - Septum type electromagnet - Google Patents
Septum type electromagnetInfo
- Publication number
- JPH0795479B2 JPH0795479B2 JP1171292A JP17129289A JPH0795479B2 JP H0795479 B2 JPH0795479 B2 JP H0795479B2 JP 1171292 A JP1171292 A JP 1171292A JP 17129289 A JP17129289 A JP 17129289A JP H0795479 B2 JPH0795479 B2 JP H0795479B2
- Authority
- JP
- Japan
- Prior art keywords
- septum
- coil
- iron core
- type electromagnet
- fitting
- 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】 〔産業上の利用分野〕 この発明は、セプタム形電磁石に関し、さらに詳しくい
うと、円形の粒子加速器等において、荷電粒子の入射、
出射時に荷電粒子の偏向に使用されるセプタム形電磁石
に関するものである。Description: TECHNICAL FIELD The present invention relates to a septum type electromagnet, and more specifically, in a circular particle accelerator or the like, injection of charged particles,
The present invention relates to a septum type electromagnet used for deflecting charged particles at the time of emission.
第3図は、例えば特公昭63−57926号公報に開示された
従来のセプタム形電磁石であり、図において、セプタム
コイルはセプタムとしてのコイル素線導体(1a)と戻し
導体としてのコイル素線導体(1b)とを備えており、こ
れらのコイル素線導体(1a),(1b)のそれぞれに素線
絶縁体(2a),(2b)、さらに主絶縁(対地絶縁)体
(3a),(3b)を施したものを鉄心(4)に結合し、磁
気シールド(5)および磁気シールド押え(6)を鉄心
(4)の外周に設けてコイルを保持してなるものであ
る。FIG. 3 shows a conventional septum type electromagnet disclosed in, for example, Japanese Patent Publication No. 63-57926, in which a septum coil is a coil wire conductor (1a) as a septum and a coil wire conductor as a return conductor. (1b), and each of these coil wire conductors (1a), (1b) has a wire insulation (2a), (2b), and a main insulation (earth insulation) (3a), ( 3b) is coupled to an iron core (4), and a magnetic shield (5) and a magnetic shield retainer (6) are provided on the outer periphery of the iron core (4) to hold a coil.
また、第4図に示すように、コイル(1b)を押えるコイ
ル押え(7)が設けられているものもある。Further, as shown in FIG. 4, there is also one provided with a coil retainer (7) for retaining the coil (1b).
以上の構成になる従来のセプタム形電磁石は、円形の粒
子加速器等への荷電粒子の入射もしくは出射に使用さ
れ、これらの入射・出射時の荷電粒子の中心軌道Aは円
形の粒子加速器の平衡軌道Bとできる限り近づけるのが
効率が良い。The conventional septum type electromagnet configured as described above is used for injecting or emitting charged particles into or from a circular particle accelerator, and the central orbit A of the charged particles at the time of injecting or emitting these is the equilibrium orbit of the circular particle accelerator. It is efficient to bring it as close as possible to B.
このことにより、軌道Aを軌道Bに近づけるためにコイ
ル素線導体(1a)、素線絶縁体(2a)、主絶縁体(3a)
はできる限り薄く形成されていた。As a result, in order to bring the track A closer to the track B, the coil wire conductor (1a), the wire insulator (2a), and the main insulator (3a)
Was formed as thin as possible.
また、コイル通電時に生じる電磁力(拡張力)Fによる
素線(1a)の変形を制限するために、磁気シールド
(5)、さらに磁気シールド押え(6)を溶接やボルト
(図示せず)等で取り付け、補強していた。また、第4
図のものでは、さらにコイル素線導体(1b)をコイル押
え(7)で固定していた。Further, in order to limit the deformation of the wire (1a) by the electromagnetic force (expansion force) F generated when the coil is energized, the magnetic shield (5) and the magnetic shield retainer (6) are welded or bolts (not shown), etc. Was attached and reinforced. Also, the fourth
In the illustrated case, the coil wire conductor (1b) is further fixed by the coil retainer (7).
従来のセプタム電磁石は以上のように構成されていたの
で、構造が複雑となる一方、コイル通電時の電磁力に対
してコイル支持のスパンが長くなる等、コイルの変形を
効果的に制限する支持が困難であり、形成される磁場に
乱れが生じる等の問題点があった。Since the conventional septum electromagnet is configured as described above, the structure is complicated, while the span for coil support is long against the electromagnetic force when the coil is energized. However, there is a problem that the formed magnetic field is disturbed.
また、パルス通電時のコイル振動に対し、絶縁体に損傷
を生じ、絶縁低下を起こす事故を生じ易かった。In addition, the coil vibration during pulse energization caused damage to the insulator, resulting in a decrease in insulation.
この発明は上記のような問題点を解消するためになされ
たもので、コイル通電時の電磁力の支持を確実にし、磁
場精度が向上できるとともに、絶縁体の劣化を防ぐこと
により、長期間の使用に対し、信頼性の高いセプタム電
磁石を得ることを目的とする。The present invention has been made to solve the above-mentioned problems, and can reliably support the electromagnetic force when the coil is energized, improve the magnetic field accuracy, and prevent the deterioration of the insulator, thereby ensuring long-term operation. The purpose is to obtain a reliable septum electromagnet for use.
この発明に係るセプタム形電磁石は、鉄心は、セプタム
および戻り導体を嵌め込むための嵌合溝とビーム開口部
を構成する開口とが形成された磁性体の薄板を多数枚積
層されて構成され、セプタムコイルがセプタムおよび戻
り導体を嵌合溝に嵌め合わせて鉄心に固定されているも
のである。In the septum type electromagnet according to the present invention, the iron core is configured by laminating a plurality of thin plates of a magnetic material in which a fitting groove for fitting the septum and the return conductor and an opening forming a beam opening are formed. The septum coil is fixed to the iron core by fitting the septum and the return conductor into the fitting groove.
この発明においては、セプタムコイルのセプタムおよび
戻し導体が磁性体の薄板に設けられた嵌合溝に嵌合され
るので、別途コイル支持構造を設ける必要がなく、さら
に電磁力支持のための押え部材を設ける必要がなく、コ
イルの支持構造が簡略化される。In the present invention, since the septum of the septum coil and the return conductor are fitted in the fitting groove provided in the thin plate made of a magnetic material, it is not necessary to separately provide a coil supporting structure, and a pressing member for supporting electromagnetic force is further provided. Is not required, and the coil support structure is simplified.
第1図および第2図はそれぞれこの発明に係るセプタム
形電磁石の一実施例を示す横断面図および斜視図であ
り、図において磁性体の薄板、例えばケイ素鋼板からな
るコア板(8)は、入射する荷電粒子の通過するビーム
開口部を構成する開口(8a)と嵌合溝(8b)とが1枚の
板を打ち抜く等して形成されており、このコア板(8)
を多数枚積層して鉄心(9)が構成されている。1 and 2 are a cross-sectional view and a perspective view, respectively, showing an embodiment of a septum type electromagnet according to the present invention. The opening (8a) and the fitting groove (8b) forming the beam opening through which the incident charged particles pass are formed by punching out a single plate, and this core plate (8)
An iron core (9) is formed by laminating a large number of sheets.
その他、第3図におけると同一符号は同一部分を示し、
説明を省略する。In addition, the same reference numerals as in FIG. 3 indicate the same parts,
The description is omitted.
このように構成されたセプタム形電磁石を組み立てるに
は、素線絶縁体(2a),(2b)および主絶縁体(3a),
(3b)を施したコイル素線導体(1a),(1b)がコア板
(8)の嵌合溝(8b)に嵌め合わされるように、コイル
素線導体(1a),(1b)に数枚から数10枚を単位として
コア板(8)を挿入しながら積層していく。そして、所
定枚数のコア板(8)が積層された後、鉄心(9)のコ
イル素線導体(1a)側に外方から磁気シールド板(5)
を溶接して取り付けて、電磁石が組み立てられる。To assemble the septum type electromagnet constructed in this way, the wire insulators (2a), (2b) and the main insulator (3a),
The coil wire conductors (1a) and (1b) are numbered so that the coil wire conductors (1a) and (1b) provided with (3b) are fitted in the fitting grooves (8b) of the core plate (8). The core plate (8) is inserted in units of several to several tens, and stacked. Then, after a predetermined number of core plates (8) are laminated, the magnetic shield plate (5) is externally attached to the coil wire conductor (1a) side of the iron core (9).
Are welded and attached to assemble the electromagnet.
この実施例によれば、コイル素線導体(1a),(1b)が
コア板(8)の嵌合溝(8b)に嵌め合わされて固定され
ているので、コイル素線導体(1b)を押さえるコイル押
え(7)が不要となり、構造が簡略化される。また、コ
イル通電時にコイル素線導体(1a)に作用する電磁力F
が磁気シールド板(5)に作用せず、磁気シールド板
(5)の薄板化が図られ、磁気シールド板押え(6)が
不要となり、入・出射荷電粒子の中心軌道Aと円形粒子
加速器の平衡軌道Bとの間の隔壁の厚みを薄くすること
ができ、軌道AからBあるいはBからAへの変換の効率
(入射あるいは出射の効率)を上げることができる。According to this embodiment, since the coil wire conductors (1a) and (1b) are fitted and fixed in the fitting groove (8b) of the core plate (8), the coil wire conductor (1b) is pressed down. The coil retainer (7) is not required and the structure is simplified. Also, the electromagnetic force F acting on the coil wire conductor (1a) when the coil is energized
Does not act on the magnetic shield plate (5), the magnetic shield plate (5) is made thinner, and the magnetic shield plate retainer (6) is no longer required, and the central orbit A of the incoming and outgoing charged particles and the circular particle accelerator The thickness of the partition wall with the equilibrium orbit B can be reduced, and the efficiency of conversion from orbit A to B or B to A (incidence or emission efficiency) can be increased.
また、コイル通電時にコイル素線導体(1a)に作用する
電磁力Fは嵌合溝(8b)から鉄心部(8c)に直接伝わ
り、コイル素線導体(1a)は強固に支持されて変形が抑
えられる。これにより、パルス通電時のコイル振動もな
くなり、素線絶縁体(2a)、主絶縁体(3a)の劣化が防
止でき、信頼性の向上が図られる。Further, the electromagnetic force F acting on the coil wire conductor (1a) when the coil is energized is directly transmitted from the fitting groove (8b) to the iron core portion (8c), and the coil wire conductor (1a) is firmly supported and deformed. It can be suppressed. As a result, coil vibration during pulse energization is also eliminated, deterioration of the wire insulator (2a) and main insulator (3a) can be prevented, and reliability is improved.
さらに、これらのコイル支持構造の簡略化および剛性の
向上により、コイル設置精度が向上し、磁場の精度が向
上し、セプタム形電磁石の入射・出射の効率がさらに上
がる。Further, by simplifying the coil support structure and improving the rigidity, the coil installation accuracy is improved, the magnetic field accuracy is improved, and the incident / exit efficiency of the septum type electromagnet is further improved.
さらには、鉄心(9)の形成とセプタムコイルとの固定
が同時に行われ、組立性の向上が図られる。Furthermore, the iron core (9) is formed and the septum coil is fixed at the same time, so that the assemblability is improved.
なお、上記実施例では、コア板(8)の開口(8a)がコ
イル素線導体(1a)を嵌め込む嵌合溝(8b)側を開放す
るように形成されているものとして説明しているが、コ
ア板(8)の開口(8a)がコイル素線導体(1a)を嵌め
込む嵌合溝(8b)の外側を残して穿設されているものと
してもよい。この場合、コイル素線導体(1a)を嵌め込
む嵌合溝(8b)の外側のコア板(8)部が磁気シールド
板として作用し、コア板(8)に鉄心部(8c)と磁気シ
ールド部とが一体に形成されることになる。In the above embodiment, the core plate (8) has the opening (8a) formed so as to open the side of the fitting groove (8b) into which the coil wire conductor (1a) is fitted. However, the opening (8a) of the core plate (8) may be formed leaving the outside of the fitting groove (8b) into which the coil wire conductor (1a) is fitted. In this case, the core plate (8) part outside the fitting groove (8b) into which the coil wire conductor (1a) is fitted acts as a magnetic shield plate, and the core plate (8) has an iron core part (8c) and a magnetic shield part. The part will be integrally formed.
そこで、磁気シールド板(5)が不要となり、構造の簡
素化が図られ、入・出射荷電粒子の中心軌道Aと円形粒
子加速器の平衡軌道Bとの間の隔壁の厚みをさらに薄く
することができ、軌道AからBあるいはBからAへの変
換の効率(入射あるいは出射の効率)を上げることがで
きる。また、コイル通電時にコイル素線導体(1a)に作
用する電磁力Fは嵌合溝(8b)および磁気シールド部か
ら鉄心部(8c)に直接伝わり、コイル素線導体(1a)は
強固に支持されて変形が抑えられる。これにより、パル
ス通電時のコイル振動もなくなり、素線絶縁体(2a)、
主絶縁体(3a)の劣化が防止できる。Therefore, the magnetic shield plate (5) is not required, the structure is simplified, and the partition wall between the central orbit A of the incoming / outgoing charged particles and the equilibrium orbit B of the circular particle accelerator can be made thinner. Therefore, the efficiency of conversion from orbit A to B or B to A (incidence or emission efficiency) can be improved. Further, the electromagnetic force F acting on the coil wire conductor (1a) when the coil is energized is directly transmitted from the fitting groove (8b) and the magnetic shield part to the iron core part (8c), and the coil wire conductor (1a) is firmly supported. As a result, deformation is suppressed. As a result, coil vibration during pulse energization is also eliminated, and the wire insulation (2a),
The deterioration of the main insulator (3a) can be prevented.
また、上記実施例では、磁性体の薄板として、ケイ素鋼
板を用い、パルス通電で使用する場合の例を示したが、
直流的通電の場合なら、単に電磁軟鉄の薄板を打抜いた
ものを積層して使用してもよく、上記実施例と同様の効
果を奏する。Further, in the above embodiment, as a thin plate of the magnetic material, using a silicon steel plate, an example of using in pulse energization,
In the case of direct-current energization, it is possible to simply use punched sheets of electromagnetic soft iron and stack them, and the same effects as those of the above-described embodiment are obtained.
以上のように、この発明によれば、鉄心は、セプタムお
よび戻り導体を嵌め込むための嵌合溝とビーム開口部と
を構成する開口とが形成された磁性体の薄板を多数枚積
層されて構成され、セプタムコイルがセプタムおよび戻
り導体を嵌合溝に嵌め合わせて鉄心に固定されているの
で、コイル支持構造の簡略化および剛性の向上が図られ
て、コイル設置精度が向上し、磁場の精度が向上し、入
射・出射の効率を上げることができるとともに、信頼性
の高いセプタム形電磁石が得られるという効果がある。As described above, according to the present invention, the iron core is formed by laminating a large number of thin plates of magnetic material in which the fitting groove for fitting the septum and the return conductor and the opening forming the beam opening are formed. Since the septum coil is configured and fixed to the iron core by fitting the septum and the return conductor in the fitting groove, the coil support structure is simplified and the rigidity is improved, the coil installation accuracy is improved, and the magnetic field The accuracy is improved, the efficiency of incidence / emission can be improved, and a highly reliable septum type electromagnet can be obtained.
第1図はこの発明の一実施例に係るセプタム形電磁石を
示す横断面図、第2図はこの発明の一実施例に係るセプ
タム形電磁石の組立状態を説明する斜視図、第3図およ
び第4図はそれぞれ従来のセプタム形電磁石を示す横断
面図である。 (1a)……コイル素線導体(セプタム)、(1b)……コ
イル素線導体(戻り導体)、(5)……磁気シールド
板、(8)……コア板(磁性体の薄板)、(8a)……開
口、(8b)……嵌合溝、(8c)……鉄心部、(9)……
鉄心。 なお、各図中、同一符号は同一又は相当部分を示す。FIG. 1 is a cross-sectional view showing a septum type electromagnet according to an embodiment of the present invention, and FIG. 2 is a perspective view for explaining an assembled state of the septum type electromagnet according to an embodiment of the present invention, FIG. 3 and FIG. FIG. 4 is a cross-sectional view showing a conventional septum type electromagnet. (1a) ... coil wire conductor (septum), (1b) ... coil wire conductor (return conductor), (5) ... magnetic shield plate, (8) ... core plate (magnetic thin plate), (8a) …… Opening, (8b) …… Mating groove, (8c) …… Iron core, (9) ……
Iron core. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (2)
を有し、該ビーム開口部に偏向磁場を発生せしめるセプ
タム、および戻り導体からなるセプタムコイルと、該セ
プタムコイルを覆う鉄心と、荷電粒子が入射する加速器
側のセプタム側面に配置された磁気シールド板とを備え
たセプタム形電磁石において、前記鉄心は、前記セプタ
ムおよび前記戻り導体を嵌め込むための嵌合溝と前記ビ
ーム開口部を構成する開口とが形成された磁性体の薄板
を多数枚積層されて構成され、前記セプタムコイルが前
記セプタムおよび前記戻り導体を前記嵌合溝に嵌め合わ
せて前記鉄心に固定されていることを特徴とするセプタ
ム形電磁石。1. A septum coil having a beam opening through which an incident charged particle passes and a deflection magnetic field is generated in the beam opening, a septum coil formed of a return conductor, an iron core covering the septum coil, and a charged particle. In a septum-type electromagnet having a magnetic shield plate disposed on the side of the septum on the side of the accelerator where the beam enters, the iron core constitutes a fitting groove for fitting the septum and the return conductor, and the beam opening. It is configured by laminating a plurality of magnetic thin plates each having an opening, and the septum coil is fixed to the iron core by fitting the septum and the return conductor into the fitting groove. Septum type electromagnet.
タムを嵌め合わせる嵌合溝の外側を残すように穿設され
て、鉄心部と磁気シールド部とを一体化した断面形状に
形成されていることを特徴とする請求項1に記載のセプ
タム形電磁石。2. The thin plate of the magnetic body is formed so that the opening remains outside the fitting groove for fitting the septum, and is formed in a sectional shape in which an iron core portion and a magnetic shield portion are integrated. The septum type electromagnet according to claim 1, wherein:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1171292A JPH0795479B2 (en) | 1989-07-04 | 1989-07-04 | Septum type electromagnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1171292A JPH0795479B2 (en) | 1989-07-04 | 1989-07-04 | Septum type electromagnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0337999A JPH0337999A (en) | 1991-02-19 |
JPH0795479B2 true JPH0795479B2 (en) | 1995-10-11 |
Family
ID=15920603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1171292A Expired - Fee Related JPH0795479B2 (en) | 1989-07-04 | 1989-07-04 | Septum type electromagnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0795479B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020038797A (en) * | 2018-09-04 | 2020-03-12 | 株式会社日立製作所 | Accelerator, and particle beam therapy system with the same |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58182211A (en) * | 1982-04-19 | 1983-10-25 | Mitsubishi Electric Corp | Electromagnet |
JPH01307198A (en) * | 1988-06-03 | 1989-12-12 | Hitachi Ltd | Septum magnet |
-
1989
- 1989-07-04 JP JP1171292A patent/JPH0795479B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0337999A (en) | 1991-02-19 |
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