JPH0729697A - High-order resonance mode suppressor - Google Patents
High-order resonance mode suppressorInfo
- Publication number
- JPH0729697A JPH0729697A JP17295093A JP17295093A JPH0729697A JP H0729697 A JPH0729697 A JP H0729697A JP 17295093 A JP17295093 A JP 17295093A JP 17295093 A JP17295093 A JP 17295093A JP H0729697 A JPH0729697 A JP H0729697A
- Authority
- JP
- Japan
- Prior art keywords
- resonance mode
- order resonance
- frequency
- cavity
- acceleration
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，荷電粒子ビームを加速
する高周波加速空洞に装着され，高周波加速空洞内に発
生する高次共振モードを減衰させて安定したビーム加速
を行わせるための高次共振モード抑制装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted in a high frequency accelerating cavity for accelerating a charged particle beam, and a high order resonance mode for attenuating a higher order resonance mode generated in the high frequency accelerating cavity for stable beam acceleration. The present invention relates to a resonance mode suppressing device.
【０００２】[0002]
【従来の技術】高周波加速空洞により加速する荷電粒子
ビームを不安定にさせる原因として，塊状の荷電粒子ビ
ームが加速空洞内を通過することにより誘起される高次
共振モードがあり，この高次共振モードを減衰させるた
めに高次共振モード抑制装置を加速空洞に装着すること
がなされる。高次共振モード抑制装置は，加速空洞内の
高次共振モードの電磁界に結合してこれを空洞外に取り
出して消耗させ，その共振エネルギーが空洞内に蓄積さ
れないようにするための装置で，空洞内の高次共振モー
ドの高周波電磁場と結合するアンテナによって捕らえた
電磁波を空洞外に設けられた整合負荷に導き，消費させ
ることによって高次共振モードを減衰させるよう構成さ
れる。図３は従来技術になる高次共振モード抑制装置の
一例を示す断面図で，高エネルギー物理学研究所によっ
て開発され，ＫＥＫ Ｒｅｐｏｒｔ（１９８７年４月）
に紹介されたものである。図３において，従来構成にな
る高次共振モード抑制装置３０は，高周波加速空洞３３
の胴部に設けられた開口部３４に真空フランジ３１によ
り装着される。この高次共振モード抑制装置３０では，
ロッドアンテナ３５とループアンテナ３６とを加速空洞
３３内に配設して，加速空洞３３内の高次共振モードの
電磁界に結合させ，それぞれに形成された各同軸導波管
路３７，３８から図示しない整合負荷に導いて熱損失と
して消費させるよう構成されている。上記構成におい
て，ループアンテナ３６は高次共振モード以外に加速モ
ードの電磁界とも結合するため，同軸導波管路３８に加
速モードの半波長管路３９（３００mm）が付加されたＴ
の字型分岐管路４１が形成され，同軸導波管路３８に加
速共振モードの電磁界が侵入しないような高周波特性に
構成されている。又，ロッドアンテナ３５は加速共振モ
ードの電磁界と結合し難いので半波長管路はないが，同
軸導波管路３７の内軸を冷却するための冷却構造を形成
するため，同様にＴの字分岐管路４０が採用されてい
る。上記構成によって，加速空洞３３内に発生した高次
共振モードの電磁界は，ロッドアンテナ３５及びループ
アンテナ３６に結合してそれぞれの同軸導波管路３７，
３８に導かれ，各Ｔの字型分岐管路４０，４１から図外
の整合負荷に達し，熱損失として消費される。従って，
加速空洞３３内に発生する高次共振モードのエネルギー
は減衰するので，加速空洞３３内の高次共振モードが抑
制される。2. Description of the Related Art A cause of destabilization of a charged particle beam accelerated by a high-frequency accelerating cavity is a higher-order resonance mode induced by a lumped charged particle beam passing through the accelerating cavity. A higher order resonant mode suppressor is mounted in the accelerating cavity to damp the modes. The high-order resonance mode suppressor is a device for coupling to the electromagnetic field of the higher-order resonance mode in the acceleration cavity and taking it out of the cavity for consumption, so that the resonance energy is not stored in the cavity. It is configured to attenuate the higher-order resonance mode by guiding and consuming the electromagnetic waves captured by the antenna coupled to the high-frequency electromagnetic field of the higher-order resonance mode inside the cavity to the matching load provided outside the cavity. FIG. 3 is a cross-sectional view showing an example of a high-order resonance mode suppressing device according to the prior art, which was developed by the High Energy Physics Laboratory and is a KEK Report (April 1987)
Was introduced in. In FIG. 3, a high-order resonance mode suppressing device 30 having a conventional structure is shown in FIG.
The vacuum flange 31 attaches to the opening 34 provided in the body of the. In this high-order resonance mode suppression device 30,
The rod antenna 35 and the loop antenna 36 are arranged in the acceleration cavity 33, and are coupled to the electromagnetic field of the higher-order resonance mode in the acceleration cavity 33, and the coaxial waveguides 37 and 38 formed respectively It is configured to lead to a matching load (not shown) to be consumed as heat loss. In the above configuration, since the loop antenna 36 is coupled to the electromagnetic field of the acceleration mode as well as the high-order resonance mode, the T-wavelength of the acceleration mode half-wave tube 39 (300 mm) is added to the coaxial waveguide 38.
A V-shaped branch conduit 41 is formed, and the coaxial waveguide 38 has a high-frequency characteristic so that the electromagnetic field of the acceleration resonance mode does not enter. Further, the rod antenna 35 does not have a half-wavelength conduit because it is difficult to couple with the electromagnetic field of the acceleration resonance mode, but since the cooling structure for cooling the inner axis of the coaxial waveguide 37 is formed, the rod antenna 35 similarly has The character branch line 40 is adopted. With the above configuration, the electromagnetic field of the higher-order resonance mode generated in the acceleration cavity 33 is coupled to the rod antenna 35 and the loop antenna 36, and the respective coaxial waveguides 37,
It is led to 38, reaches a matching load (not shown) from each T-shaped branch conduit 40, 41, and is consumed as heat loss. Therefore,
Since the energy of the higher order resonance mode generated in the acceleration cavity 33 is attenuated, the higher order resonance mode in the acceleration cavity 33 is suppressed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら，上記高
次共振モード抑制装置３０では，同軸導波管路３７，３
８にＴの字型分岐管路４０，４１が形成されているた
め，加速空洞３３内の高次共振モードを吸収する周波数
特性が周期的となる。即ち，上記従来構成に示したよう
に，Ｔの字型分岐管路４１の分岐位置と短絡位置との間
の管路長を３００mmとし，加速周波数５１０ＭHzに対し
て完全反射とした場合，図４に示すような周期的な反射
特性となる。同図に示されるように，７６７ＭHzでは反
射なく吸収されるが，その近傍の周波数では反射係数が
非常に大きく，種々の周波数をもつ多数の高次共振モー
ドに対して一様な吸収特性が発揮されない。従って，従
来の構成においては空洞内に励起される高次共振モード
の中の加速に有害な高次共振モードを抑制できない場合
が生じる問題点があった。本発明は上記問題点に鑑みて
創案されたもので，加速に有害な高次共振モードを選択
的に抑制することができる高次共振モード抑制装置を提
供することを目的とする。However, in the above high-order resonance mode suppressing device 30, the coaxial waveguides 37, 3 are not used.
Since the T-shaped branch conduits 40 and 41 are formed at 8, the frequency characteristic of absorbing the higher-order resonance mode in the acceleration cavity 33 becomes periodic. That is, as shown in the above conventional configuration, when the pipe length between the branching position and the short-circuiting position of the T-shaped branch pipe 41 is 300 mm and complete reflection is performed at an acceleration frequency of 510 MHz, as shown in FIG. The periodic reflection characteristics are as shown in. As shown in the figure, it is absorbed without reflection at 767 MHz, but the reflection coefficient is very large at frequencies near it, and uniform absorption characteristics are exhibited for many high-order resonance modes with various frequencies. Not done. Therefore, in the conventional configuration, there is a problem in that it may not be possible to suppress the higher-order resonance mode that is harmful to acceleration among the higher-order resonance modes excited in the cavity. The present invention was devised in view of the above problems, and an object of the present invention is to provide a high-order resonance mode suppressing device capable of selectively suppressing a high-order resonance mode harmful to acceleration.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明が採用する手段は，荷電粒子に高周波エネルギ
ーを与えて加速する高周波加速空洞に設置され，高周波
加速空洞内に励起される高次共振モードの電磁界が高周
波加速空洞内に蓄積されることを抑制する高次共振モー
ド抑制装置において，上記高次共振モードと同じ共振周
波数を有する空洞共振器を上記高周波加速空洞の外部に
設置して，上記空洞共振器と高周波加速空洞とを高周波
結合させたことを特徴とする高次共振モード抑制装置と
して構成される。The means adopted by the present invention for achieving the above object is installed in a high frequency accelerating cavity for accelerating charged particles by applying high frequency energy, and is excited in the high frequency accelerating cavity. A high-order resonance mode suppressing device for suppressing the accumulation of electromagnetic field of the second-order resonance mode in the high-frequency acceleration cavity, wherein a cavity resonator having the same resonance frequency as the higher-order resonance mode is installed outside the high-frequency acceleration cavity. Then, the above-mentioned cavity resonator and the high-frequency accelerating cavity are high-frequency coupled to form a high-order resonance mode suppressing device.
【０００５】[0005]
【作用】本発明によれば，荷電粒子の加速に有害な高次
共振モード，即ち，抑制したい高次共振モードの周波数
と同じ共振周波数を有する空洞共振器を高周波加速空洞
の外部に設置して，この空洞共振器と高周波加速空洞と
を高周波結合することにより，高周波加速空洞内に励起
された高次共振モードの電磁界を空洞共振器内に取り出
すことができる。空洞共振器内に取り出した高次共振モ
ードの電磁界は電力負荷に導いて消費される。従って，
高周波加速空洞内に励起された加速に有害な高次共振モ
ードは減衰し，高次共振モード抑制の目的が達成され
る。この場合，上記空洞共振器はその形状を適当に調整
することにより複数の高次共振周波数に共振することが
でき，結果的に広い減衰モードを持つことができるの
で，有害な高次モードを幅広い帯域にわたって減衰させ
ることができる。According to the present invention, a cavity resonator having a higher resonance mode harmful to acceleration of charged particles, that is, a resonance frequency equal to the higher resonance mode frequency to be suppressed is installed outside the high frequency acceleration cavity. By high-frequency coupling the cavity resonator and the high-frequency accelerating cavity, the electromagnetic field of the higher-order resonance mode excited in the high-frequency accelerating cavity can be taken out into the cavity resonator. The electromagnetic field of the higher resonance mode taken out in the cavity resonator is guided to the power load and consumed. Therefore,
Higher-order resonance modes that are harmful to acceleration excited in the high-frequency acceleration cavity are attenuated, and the purpose of suppressing higher-order resonance modes is achieved. In this case, the cavity resonator can resonate at a plurality of higher-order resonance frequencies by adjusting its shape appropriately, and as a result, it can have a wide attenuation mode, so that the harmful higher-order modes can be widened. It can be attenuated over a band.
【０００６】[0006]
【実施例】以下，添付図面を参照して，本発明を具体化
した実施例につき説明し，本発明の理解に供する。尚，
以下の実施例は本発明を具体化した一例であって，本発
明の技術的範囲を限定するものではない。ここに，図１
は本発明の第１実施例に係る高次共振モード抑制装置の
構成を示す断面図，図２は本発明の第２実施例に係る高
次共振モード抑制装置の構成を示す断面図である。図１
において，高次共振モード抑制装置１は，高周波加速空
洞１０の胴部に形成された取付けポート１１に装着でき
るよう構成されている。該高次共振モード抑制装置１
は，空洞共振器２と高周波加速空洞１０とを高周波的に
結合すると共に，空洞共振器２と整合負荷６とを高周波
結合できるよう構成される。空洞共振器２は抑制対象と
する高周波加速空洞１０内の高次共振モードと同じ共振
周波数を有する外部共振器として形成され，高周波加速
空洞１０内の高次共振モードの磁界と結合する第１のル
ープ型結合器３により，空洞共振器２と高周波加速空洞
１０とが高周波的に結合され，第２のループ型結合器５
により空洞共振器２と整合負荷６とが高周波結合され
る。本実施例では，空洞共振器２は抑制対象とする高周
波加速空洞１０内の高次共振モードをＴＭ１１０（約７
７０ＭHz）とＴＭ０２０（約１１００ＭHz）とするた
め，直方体形状に形成されている。上記高次共振モード
の周波数に一致させる共振周波数を有する直方体形状の
一辺の長さａ，ｂは，直方体共振空洞のＴＥ１１０及び
ＴＥ２１０モードを利用して次のように計算できる。 （π／ａ）2 ＋（π／ｂ）2 ＝ｋ1 2＝（ω1 ／ｃ）2 …（１） （２π／ａ）2 ＋（π／ｂ）2 ＝ｋ2 2＝（ω2 ／ｃ）2 …（２） ここで，ｃは光速，ｋは波数，ω1,ω2 は抑制する高次
共振モードの角周波数である。Embodiments of the present invention will be described below with reference to the accompanying drawings for the understanding of the present invention. still,
The following example is an example embodying the present invention and does not limit the technical scope of the present invention. Figure 1
2 is a sectional view showing the structure of a higher-order resonance mode suppressing device according to the first embodiment of the present invention, and FIG. 2 is a sectional view showing the structure of a higher-order resonance mode suppressing device according to the second embodiment of the present invention. Figure 1
In the above, the higher-order resonance mode suppressing device 1 is configured so that it can be attached to the mounting port 11 formed in the body of the high-frequency acceleration cavity 10. The high-order resonance mode suppression device 1
Is configured so that the cavity resonator 2 and the high-frequency acceleration cavity 10 can be coupled at high frequencies, and the cavity resonator 2 and the matching load 6 can be coupled at high frequency. The cavity resonator 2 is formed as an external resonator having the same resonance frequency as the higher-order resonance mode in the high-frequency acceleration cavity 10 to be suppressed, and is coupled to the magnetic field of the higher-order resonance mode in the high-frequency acceleration cavity 10. The cavity 2 and the high frequency accelerating cavity 10 are coupled by the loop type coupler 3 in terms of high frequency, and the second loop type coupler 5
Thus, the cavity resonator 2 and the matching load 6 are high-frequency coupled. In the present embodiment, the cavity resonator 2 suppresses the higher-order resonance mode in the high-frequency acceleration cavity 10 to be suppressed by the TM110 (about 7).
70 MHz) and TM020 (about 1100 MHz), so it is formed in a rectangular parallelepiped shape. The lengths a and b of one side of the rectangular parallelepiped shape having a resonance frequency that matches the frequency of the higher-order resonance mode can be calculated as follows using the TE110 and TE210 modes of the rectangular parallelepiped resonance cavity. (Π / a) 2 + (π / b) 2 = k 1 2 = (ω 1 / c) 2 (1) (2π / a) 2 + (π / b) 2 = k 2 2 = (ω 2 / C) 2 (2) Here, c is the speed of light, k is the wave number, and ω 1 and ω 2 are the angular frequencies of the higher-order resonance mode to be suppressed.
【０００７】上式（１）（２）に上記周波数７７０ＭHz
及び１１００ＭHzを入力すると，空洞共振器２の寸法
ａ，ｂは，ａ＝約３４cm，ｂ＝約２４cmとなる。上記実
施例構成になる高次共振モード抑制装置１による加速モ
ード及び２つの高次共振モードの電力透過量を測定した
ところ，表１に示すような結果が得られた。In the above equations (1) and (2), the above frequency 770 MHz
And 1100 MHz, the dimensions a and b of the cavity resonator 2 are a = about 34 cm and b = about 24 cm. When the power transmission amount of the acceleration mode and the two high-order resonance modes by the high-order resonance mode suppression device 1 having the above-mentioned embodiment configuration was measured, the results shown in Table 1 were obtained.
【表１】 表１に示されるように，加速モードであるＴＭ０１０モ
ードに対しては高い遮断特性を有し，高次共振モードの
ＴＭ１１０及びＴＭ０２０モードに対しては高い透過特
性を有することがわかる。この電力透過量は，各ループ
型結合器３，５の結合度を適切に調整することにより，
最大の透過量が得られる。図１に示す構成において，第
１及び第２のループ型結合器３，５はそれぞれ中空構造
中に冷却水を還流させ，空洞共振器２にも水冷配管７が
配設されて水冷構造が構成されている。又，高周波加速
空洞１０及び空洞共振器２内の真空度を保つため，図示
するように各ループ型結合器３，５の配設位置にそれぞ
れ第１の誘電体窓４及び第２の誘電体窓８が設けられて
いる。尚，上記実施例構成においては，ループアンテナ
により磁界結合する高次共振モードの例を示したが，電
界結合する高次共振モードに対しては，ロッドアンテナ
により電界結合させるロッドアンテナ型結合器を採用す
ることができる。上記のように，空洞共振器２は高次共
振モードと同じ共振周波数を有する共振空洞として構成
されるので，高周波加速空洞１０に比べて十分に小型に
形成でき，加速周波数の電磁波は遮断されるので，従来
の高次共振モード抑制装置にみられた加速モードの電磁
界を遮断するためのＴの字分岐導波管構造等の対策は不
要である。[Table 1] As shown in Table 1, it can be seen that it has a high cutoff characteristic for the TM010 mode, which is the acceleration mode, and a high transmission characteristic for the TM110 and TM020 modes of the higher resonance modes. This power transmission amount can be adjusted by appropriately adjusting the coupling degree of each loop type coupler 3, 5.
Maximum transmission is obtained. In the configuration shown in FIG. 1, the first and second loop-type couplers 3 and 5 respectively recirculate cooling water in the hollow structure, and the cavity resonator 2 is also provided with a water cooling pipe 7 to form a water cooling structure. Has been done. Further, in order to maintain the degree of vacuum in the high frequency acceleration cavity 10 and the cavity resonator 2, as shown in the drawing, the first dielectric window 4 and the second dielectric body are respectively provided at the positions where the loop type couplers 3 and 5 are arranged. A window 8 is provided. In the configuration of the above embodiment, the example of the higher-order resonance mode in which the magnetic field coupling is performed by the loop antenna is shown. However, for the higher-order resonance mode in which the electric field coupling is performed, the rod antenna type coupler that performs the electric field coupling by the rod antenna is Can be adopted. As described above, since the cavity resonator 2 is configured as a resonance cavity having the same resonance frequency as the higher-order resonance mode, it can be made sufficiently smaller than the high-frequency acceleration cavity 10, and electromagnetic waves at the acceleration frequency are blocked. Therefore, it is not necessary to take a measure such as a T-shaped branch waveguide structure for blocking the electromagnetic field of the acceleration mode, which is found in the conventional higher-order resonance mode suppressing device.
【０００８】又，形状を調整することにより複数の高次
共振モードの周波数で共振させることができ，高次共振
モードを幅広い帯域で減衰させることができる。次に，
本発明の第２実施例について図２を用いて説明する。本
第２実施例は，２台の高周波加速空洞１０ａ，１０ｂが
連設されている場合の高次共振モード抑制装置９の構成
を示すものである。このように高周波加速空洞１０ａ，
１０ｂが連設されている場合のそれぞれの高次共振モー
ドはほぼ同じ共振周波数を有している。従って，各高周
波加速空洞１０ａ，１０ｂに１つの高次共振モード抑制
装置９をそれぞれ結合させることができる。図２に示す
ように，第２実施例に係る高次共振モード抑制装置９
は，第１の高周波加速空洞１０ａと空洞共振器１３との
間を第３のループ型結合器１１により高周波結合し，第
２の高周波加速空洞１０ｂと空洞共振器１３との間を第
４のループ型結合器１２で高周波結合すると共に，空洞
共振器１３と整合負荷１５との間を第５のループ型結合
器１４で高周波結合して構成されている。上記構成にお
いては，空洞共振器１３が各高周波加速空洞１０ａ，１
０ｂの高次共振モードの電力を合成するするように各ル
ープ型結合器１１，１２の形状が調整される。従って，
各高周波加速空洞１０ａ，１０ｂ内に励起された高次共
振モードは，それぞれ空洞共振器１３に取り出され，合
成された電磁界は第５のループ型結合器１４から整合負
荷１５に導かれ，電力損失として消費されるので，２台
の高周波加速空洞１０ａ，１０ｂの高次共振モードは１
台の高次共振モード抑制装置９により抑制される。Further, by adjusting the shape, it is possible to resonate at a frequency of a plurality of higher resonance modes, and it is possible to attenuate the higher resonance modes in a wide band. next,
A second embodiment of the present invention will be described with reference to FIG. The second embodiment shows the configuration of the higher-order resonance mode suppressing device 9 when two high-frequency acceleration cavities 10a and 10b are connected in series. In this way, the high frequency acceleration cavity 10a,
The higher-order resonance modes in the case where 10b are connected in series have substantially the same resonance frequency. Therefore, one high-order resonance mode suppressing device 9 can be coupled to each of the high-frequency acceleration cavities 10a and 10b. As shown in FIG. 2, the high-order resonance mode suppressing device 9 according to the second embodiment.
Is a high-frequency coupling between the first high-frequency acceleration cavity 10a and the cavity resonator 13 by the third loop type coupler 11, and a fourth high-frequency coupling between the second high-frequency acceleration cavity 10b and the cavity resonator 13. The high-frequency coupling is performed by the loop-type coupler 12, and the high-frequency coupling between the cavity resonator 13 and the matching load 15 is performed by the fifth loop-type coupler 14. In the above-mentioned structure, the cavity resonator 13 has the high-frequency acceleration cavities 10a, 1
The shapes of the loop-type couplers 11 and 12 are adjusted so as to combine the power of the higher-order resonance mode of 0b. Therefore,
The higher-order resonance modes excited in the respective high-frequency acceleration cavities 10a and 10b are taken out to the cavity resonator 13, respectively, and the combined electromagnetic field is guided from the fifth loop-type coupler 14 to the matching load 15 to generate power. Since it is consumed as a loss, the high-order resonance mode of the two high-frequency acceleration cavities 10a and 10b is 1
It is suppressed by the higher-order resonance mode suppressing device 9 of the table.
【０００９】[0009]
【発明の効果】以上の説明の通り本発明によれば，荷電
粒子の加速に有害な高次共振モード，即ち，抑制したい
高次共振モードの周波数と同じ共振周波数を有する空洞
共振器を高周波加速空洞の外部に設置して，この空洞共
振器と高周波加速空洞とを高周波結合することにより，
高周波加速空洞内に励起された高次共振モードの電磁界
を空洞共振器内に取り出すことができる。空洞共振器内
に取り出した高次共振モードの電磁界は電力負荷に導い
て消費される。従って，高周波加速空洞内に励起された
加速に有害な高次共振モードは減衰し，高次共振モード
抑制の目的が達成される。As described above, according to the present invention, a high-frequency resonance mode harmful to acceleration of charged particles, that is, a high frequency resonance mode of a cavity resonator having the same resonance frequency as that of a higher-order resonance mode to be suppressed is accelerated. It is installed outside the cavity, and by coupling this cavity and the high frequency acceleration cavity with high frequency,
The electromagnetic field of the higher-order resonance mode excited in the high frequency acceleration cavity can be taken out into the cavity resonator. The electromagnetic field of the higher resonance mode taken out in the cavity resonator is guided to the power load and consumed. Therefore, the higher-order resonance modes that are harmful to the acceleration excited in the high-frequency acceleration cavity are attenuated, and the purpose of suppressing the higher-order resonance modes is achieved.
【図１】 本発明の第１実施例に係る高次共振モード抑
制装置の構成を示す断面図。FIG. 1 is a sectional view showing the configuration of a higher-order resonance mode suppressing device according to a first embodiment of the present invention.
【図２】 本発明の第２実施例に係る高次共振モード抑
制装置の構成を示す断面図。FIG. 2 is a sectional view showing the configuration of a higher-order resonance mode suppressing device according to a second embodiment of the present invention.
【図３】 従来例に係る高次共振モード抑制装置の構成
を示す断面図。FIG. 3 is a sectional view showing a configuration of a higher-order resonance mode suppressing device according to a conventional example.
【図４】 従来例に係る高次共振モード抑制装置の周波
数特性を示すグラフ。FIG. 4 is a graph showing frequency characteristics of a high-order resonance mode suppressing device according to a conventional example.
１，９…高次共振モード抑制装置 ２，１３…空洞共振器 ３，５，１１，１２，１４…ループ型結合器 １０，１０ａ，１０ｂ…高周波加速空洞 1, 9 ... Higher-order resonance mode suppressor 2, 13 ... Cavity resonator 3, 5, 11, 12, 14 ... Loop type coupler 10, 10a, 10b ... High frequency accelerating cavity
───────────────────────────────────────────────────── フロントページの続き (72)発明者 古川 行人 兵庫県神戸市西区高塚台１丁目５番５号 株式会社神戸製鋼所神戸総合技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Furukawa 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Prefecture Kobe Steel Works, Ltd. Kobe Research Institute
Claims (1)
速する高周波加速空洞に装着され，高周波加速空洞内に
励起される高次共振モードの電磁界が高周波加速空洞内
に蓄積されることを抑制する高次共振モード抑制装置に
おいて，上記高次共振モードと同じ共振周波数を有する
空洞共振器を上記高周波加速空洞の外部に設置して，上
記空洞共振器と高周波加速空洞とを高周波結合させたこ
とを特徴とする高次共振モード抑制装置。1. An electromagnetic field of a higher resonance mode, which is attached to a high-frequency acceleration cavity for accelerating charged particles by applying high-frequency energy and is excited in the high-frequency acceleration cavity, is suppressed from being accumulated in the high-frequency acceleration cavity. In the high-order resonance mode suppressor, a cavity resonator having the same resonance frequency as the higher-order resonance mode is installed outside the high-frequency acceleration cavity, and the high-frequency acceleration cavity is coupled to the high-frequency resonance cavity. Characteristic high-order resonance mode suppression device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17295093A JPH0729697A (en) | 1993-07-13 | 1993-07-13 | High-order resonance mode suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17295093A JPH0729697A (en) | 1993-07-13 | 1993-07-13 | High-order resonance mode suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0729697A true JPH0729697A (en) | 1995-01-31 |
Family
ID=15951367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17295093A Pending JPH0729697A (en) | 1993-07-13 | 1993-07-13 | High-order resonance mode suppressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729697A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008171605A (en) * | 2007-01-10 | 2008-07-24 | Toshiba Corp | High frequency acceleration cavity apparatus, and its operating method |
| JP2018181582A (en) * | 2017-04-12 | 2018-11-15 | 三菱重工機械システム株式会社 | Harmonic absorber and high-frequency acceleration cavity |
-
1993
- 1993-07-13 JP JP17295093A patent/JPH0729697A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008171605A (en) * | 2007-01-10 | 2008-07-24 | Toshiba Corp | High frequency acceleration cavity apparatus, and its operating method |
| JP2018181582A (en) * | 2017-04-12 | 2018-11-15 | 三菱重工機械システム株式会社 | Harmonic absorber and high-frequency acceleration cavity |
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