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WO1993013569A1 - Dispositif de couplage avec facteur de couplage variable pour le couplage d'une ligne d'alimentation coaxiale avec une cavite resonnante - Google Patents

Dispositif de couplage avec facteur de couplage variable pour le couplage d'une ligne d'alimentation coaxiale avec une cavite resonnante Download PDF

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Publication number
WO1993013569A1
WO1993013569A1 PCT/DE1992/001058 DE9201058W WO9313569A1 WO 1993013569 A1 WO1993013569 A1 WO 1993013569A1 DE 9201058 W DE9201058 W DE 9201058W WO 9313569 A1 WO9313569 A1 WO 9313569A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
coupling device
arm
coaxial
piece
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.)
Ceased
Application number
PCT/DE1992/001058
Other languages
German (de)
English (en)
Inventor
Dietmar Kiehlmann
Hanspeter Vogel
Peter Schäfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to JP5511343A priority Critical patent/JPH07502393A/ja
Priority to KR1019940702154A priority patent/KR940704071A/ko
Priority to EP93901591A priority patent/EP0617849A1/fr
Publication of WO1993013569A1 publication Critical patent/WO1993013569A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
    • H05H7/14—Vacuum chambers
    • H05H7/18—Cavities; Resonators

Definitions

  • the invention relates to a coupling device with a variable coupling factor for coupling a feed line to a cavity resonator, which has a beam axis to which a beam pipe directed parallel to the beam axis is connected and in which a resonant electromagnetic field with a resonance wavelength can be set up
  • the coupling device has a coaxial coupling line with a coupling axis, an outer conductor aligned parallel to the coupling axis and an associated inner conductor, the outer conductor being connectable to the beam pipe in the vicinity of the cavity resonator - and the inner conductor being at least partially a coupling rod to be directed towards the beam pipe, which is used to vary the Coupling factor is displaceable along the coupling axis.
  • the invention relates in particular to coupling devices for use in connection with cavity resonators which are components of accelerator systems for beams of ions or electrically charged elementary particles.
  • the invention also relates to coupling devices for superconducting cavity resonators.
  • DE-32 08 655 C2 discloses a coupling device with a variable coupling factor for a superconducting cavity resonator.
  • This coupling device is supplied with an electromagnetic high-frequency signal from a generator through a rectangular waveguide and through a corresponding transition piece into a coaxial coupling line fed in, in order to vary the coupling factor, a coupling rod partially forming the inner conductor of the coupling line can be displaced.
  • a connection which acts as a short circuit for the high-frequency electromagnetic signal, between the coupling rod and a wall of the rectangular waveguide.
  • US Pat. No. 3,713,035 relates to a coupling device with a variable coupling factor for feeding a cavity resonator, the variation of the coupling factor not being accomplished by shifting an inner conductor of a coaxial coupling line, but rather by displacing holes in an end plate of the resonator, through which holes the high-frequency electromagnetic field in the coupling device communicates with the high-frequency electromagnetic field in the cavity resonator. Further notes relate to the provision of cooling in areas of the coupling device which face the cavity resonator.
  • the coupling device can be used in particular in connection with superconducting resonators and is itself partially superconducting; cooling is therefore mainly used to maintain superconductivity.
  • US Pat. No. 4,286,192 relates to a linear accelerator for electrons or ions in which two cavity resonators are coupled to one another via a further cavity.
  • a rod can be inserted into this further cavity, which is short-circuited to a wall of the cavity by a double quarter-wave transformer. Since both the cavity resonators and the further cavity are to be evacuated, the coupling rod is guided through the wall of the further cavity and ends in an end plate which is connected to the Wall of the cavity is connected. In this way, the penetration of air or the like is avoided.
  • T-pieces have three arms in the form of coaxial line sections, each of which has a length which corresponds to a quarter of the wavelength of the high-frequency electromagnetic signal to be transmitted. Two arms aligned parallel to one another serve to pass the field through, a third arm aligned perpendicular to these is short-circuited at its end facing away from the other arms.
  • This short circuit is an electrically conductive connection between the inner conductor and the outer conductor and also provides the desired support.
  • a coaxial T-piece only allows the transmission of electromagnetic signals with wavelengths or frequencies within a certain, restricted bandwidth.
  • the book also shows embodiments which are distinguished by particularly high bandwidths with regard to the frequency or wavelength of the transmissible electromagnetic signals.
  • a coupling rod In coupling devices of the type to which the invention relates, a coupling rod must be moved linearly in order to vary the coupling factor.
  • a large number of displacement devices with an electrical, pneumatic or hydraulic drive are known for accomplishing this movement, apart from displacement devices which can be operated “by hand”.
  • An overview of usable, electrically driven displacement devices can be found in an article by H. Timmel, e & i (1991) 438.
  • the known coupling devices with variable coupling factor all always have only a relatively small bandwidth with regard to frequency or wavelength of the electromagnetic signals to be transmitted. This is not necessarily important if such a coupling device is specially designed for a specific cavity with a fixed resonance frequency or resonance wavelength.
  • These coupling devices also require the use of expensive, complex and bulky waveguides as feed lines, which may be necessary when the highest outputs (several hundred kilowatts and above) have to be transmitted, as a rule, in particular with small to medium outputs below 100 kW, but not necessary for reasons of load.
  • transitions from waveguides to coaxial conductors always entail significant bandwidth restrictions.
  • the object of the invention is to provide a coupling device with a variable coupling factor that is as universal as possible can be used, which is characterized by the widest possible band width and is thus qualified both for use in relatively broadband systems and for series production, with no special requirements of the respective application cases having to be particularly taken into account, and which Makes use of waveguides unnecessary.
  • a coupling device with a variable coupling factor for coupling a coaxial feed line with an associated characteristic impedance to a cavity resonator that has a beam axis to which a beam pipe directed parallel to the beam axis is connected and in which a resonant electromagnetic Field with a resonance wavelength can be built up
  • the coupling device having the following components: a) a coaxial coupling line with an associated wave resistance and an associated outer conductor and an associated inner conductor, which coupling line is approximately parallel to a coupling axis, which is directed with the beam axis forms an angle, the outer conductor being connectable to the beam pipe in the vicinity of the cavity resonator and the inner conductor being at least partially a coupling rod to be directed towards the beam pipe and being displaceable along the coupling axis in order to vary the coupling factor t; b) a broadband T-piece with three coaxial arms, each of which has an associated outer conductor, an associated inner conductor and an associated length, which
  • An essential feature of the coupling device is the design for connection to a coaxial feed line instead of a feed line in the form of a waveguide. In this way, the problem of the narrow-band nature of a transition piece between the waveguide and the coaxial conductor is avoided from the outset.
  • a coaxial feed line can be used as feed line, as is particularly the case for general applications in the frequency range between about 100 MHz and 10 GHz, in particular between about 300 MHz and about 500 MHz, which is of particular interest for the coupling device. is known per se.
  • a commercially available coaxial line with a characteristic impedance of approximately 50 ohms can be used as the feed line.
  • the frequency range between 100 MHz and 1 GHz is particularly preferred for the use of this coupling device, the length of the feed line advantageously also being limited to the order of magnitude of 10 m.
  • the power of the electromagnetic signals to be transmitted with the coupling device is advantageously limited to below approximately 80 kW.
  • the required broadband T-piece with three coaxial arms can be designed according to the instructions from Moreno's book cited above. It is important that a broadband Coaxial T-piece can ensure an adaptation of two coaxial conductors to one another on three frequencies, these frequencies being selectable in such a way that the reflection factor describing the lack of adaptation is limited to a reasonably small size, in particular 1% or less, between two such frequencies remains.
  • the angle between the coupling axis and the beam axis preferably corresponds approximately to a right angle, as a result of which the coupling device can be designed to be particularly space-saving.
  • each mentioned odd multiple or at least one of them is equal to one on the T-piece.
  • the coupling rod is displaceable in the sleeve, which at least partially forms the inner conductor of the coupling line, but must be connected to the sleeve via a short circuit effective for the electromagnetic signals to be transmitted.
  • a short circuit is advantageously formed by at least one sliding contact between the coupling rod and the sleeve.
  • the sliding contact is advantageously preceded by a double quarter-wave transformer which is matched to the resonance wavelength.
  • a double quarter-wave transformer is indeed a frequency-selective element, but the bandwidth of a double quarter-wave transformer is generally sufficiently high for the purposes of the invention and does not significantly restrict the applicability of the coupling device that has been strengthened with it.
  • a vacuum-tight window can optionally be inserted between the feed line and the T-piece of the coupling device, which window is advantageously part of a window arrangement adapted to the feed line.
  • This window arrangement is advantageously designed in a coaxial design like the feed line and has an inner conductor and an outer conductor, an inductively effective line arrangement being provided on both sides of the window both in the inner conductor and in the outer conductor.
  • the window advantageously consists of a ceramic material; it represents a capacitance in the coaxial window arrangement, which, for example due to the provision of inductive line arrangements mentioned above, inductors are connected upstream and downstream in order to provide a third-order low-pass arrangement suitable for adaptation to the feed line and the T-piece to accomplish.
  • the coupling line has a characteristic impedance which is approximately equal to that Characteristic impedance of the feed line.
  • a characteristic impedance which is approximately equal to that Characteristic impedance of the feed line.
  • the wave resistances of the line sections forming the arms of the T-piece amount to at most about 82% of the wave resistance of the feed line (and the coupling line).
  • this choice in the context of the particular embodiment described above can lead to a particular broadness of the T-piece. It was previously known to design a coaxial T-piece with arms whose wave resistances are essentially equal to the wave resistance of a coaxial line into which the T-piece is to be inserted; however, such a T-piece is relatively narrow.
  • the middle waves ⁇ length is the one to which the geometric dimensions of the T-piece are matched, and the other two Wavelength-dependent states of the arms and the rest of the conduit assembly are intended to each other on the ratio of Wellenwider ⁇ , wherein the corresponding frequencies sym ⁇ metric with respect of the mean frequency.
  • the bandwidth of the T-piece is limited to a certain maximum size; if the wave impedance of the arms is 75% of the wave impedance of the feed line, the highest frequency at which adjustment occurs is approximately 1.3 times the mean frequency and the lowest frequency is approximately 0.7 times the mean frequency.
  • the wave resistances of the arms are between 78% and 80% of the wave resistance of the feed line; in this case the highest frequency at which adaptation occurs is approximately 1.25 times the mean frequency and the lowest frequency at which adaptation occurs is 0.75 times the mean frequency.
  • the reflection factor of the coaxial T-piece which describes the degree of mismatch, between the highest and the lowest frequency at which adaptation occurs, is always below 1%. There is thus an essentially perfect adaptation over the entire bandwidth between the highest and lowest frequency, from which the enormous bandwidth of the coaxial T-piece and the coupling device constructed with this T-piece can be seen.
  • the coupling device of any configuration requires the displacement of the coupling rod, which at least partially forms the inner conductor of the coaxial coupling line.
  • the coupling rod which at least partially forms the inner conductor of the coaxial coupling line.
  • the displacement device which in many cases is an electric motor and contains large amounts of electrically conductive materials, is arranged outside the areas of the coupling device which are exposed to high-frequency electromagnetic fields and is therefore not subject to any particular risk of interference from stray electromagnetic fields. If necessary, the displacement device can also be shielded in a simple manner.
  • the outer conductor of the third arm and the outer conductor of the first arm are preferably made in one piece.
  • the coupling rod led out of the third arm of the T-piece is preferably fastened to an end plate, from where a bellows leads to the outer conductor of the third arm; behind the third arm there is a closed and evacuable room in which the coupling rod ends. In all cases in which an evacuation of the coupling device is required, this is useful since there are no sliding vacuum seals and the like.
  • the shifting device is advantageously connected to the end plate outside the actual coupling device and is supported, for example, against the outer conductor of the third arm.
  • a displacement device for displacing the coupling rod is arranged in the sleeve, and connecting lines for the displacement device, for example electrical cables, are through the inner conductor of the third arm led out of the T-piece.
  • the interior of the sleeve is also a largely field-free space, especially when a sufficiently good short circuit is formed between the sleeve and the coupling rod.
  • a small displacement device for example an electric linear motor, can thus be installed in a simple and space-saving manner inside the coupling device.
  • the second arm rather than the third arm, to be oriented approximately parallel to the coupling axis; in this way, the coupling line and the feed line lie largely in one line, and no line of electromagnetic energy "around the corner" is required. In this way, larger field distortions are avoided, which in particular with regard to series production complies with the simple design of the coupling device.
  • the outer conductors and the inner conductors of the first and second arms are advantageously made in one piece within the scope of this development.
  • means for cooling the coupling rod are provided in the coupling device, optionally in addition to means for cooling the outer conductor of the coupling line and / or other components.
  • the coupling rod has at least one cooling channel through which a cooling fluid, for example water or liquid nitrogen, can be passed.
  • a cooling duct is advantageously connected to cooling lines which are led out of the T-piece through the inner conductor of the third arm.
  • FIG. 1 and FIG. 2 show two exemplary embodiments of coupling devices
  • FIG 3 shows a coaxial window arrangement for use in the context of a coupling device.
  • Each coupling device is used to couple a coaxial feed line 1 to a cavity resonator 2, which has a beam axis 3, along which beam tubes 4 are connected to the cavity resonator 2.
  • a beam of ions or electrically charged elementary particles can be guided through the beam tubes 4 and the cavity resonator 2 along the beam axis 3; an electromagnetic field built up in the cavity resonator 2 is capable of carrying the ions or elementary accelerate particles.
  • a coaxial coupling line 5 with an inner conductor 7 and an outer conductor 6 opens into a beam pipe 4, the inner conductor 7 being partially connected to one by a displacement device 10 along a coupling axis 8 (here the axis of symmetry of the coupling line) 5) displaceable coupling rod 9 is formed.
  • the coupling rod 9 protrudes from a sleeve 21; at this mouth 22 there is a short circuit effective for a high-frequency electromagnetic signal to be guided through the coupling device between the sleeve 21 and the coupling rod 9.
  • the outer conductor 6 Since the inner conductor 7 has a varying diameter, the outer conductor 6 also has a varying diameter to ensure a wave impedance that is constant over the length of the coupling line 5.
  • the problem here is that distortions of the electromagnetic field always occur at points of discontinuity in a coaxial line; the influence of such distortions on the wave impedance must be excluded by suitable design measures. In theory, such field distortions are very difficult to grasp, so that the design of coaxial conductors, whose inner conductors and outer conductors vary in diameter, is generally based on previous experience.
  • a coaxial T-piece 11 is inserted between the coupling line 5 and the feed line 1; this coaxial T-piece 11 has three coaxial arms 12, 13 and 14, each of which has an associated outer conductor 15, 16 or 17, an associated inner conductor 18, 19 or 20 and an associated length, which is approximately corresponds to a respective odd multiple of a quarter of the resonance wavelength of the electromagnetic field to be built up in the cavity resonator 2.
  • the three arms 12, 13 and 14 have matching wave resistances which are lower than the wave resistances which also correspond to one another of feed line 1 and coupling line 5.
  • the coupling line 5 is connected to a first arm 12 of the T-piece 11; the feed line 1 is connected to a second arm 13, and the third arm 14 is closed off from the first arm 12 and the second arm 13 with a closure 23.
  • This closure 23 forms a short circuit between the outer conductor 17 and the inner conductor 20 of the third arm 14.
  • the lengths of the arms 12, 13 and 14 can each correspond to any odd multiple of a quarter of the resonance wavelength; Advantageously, namely to achieve the most compact and space-saving coupling device, each length is dimensioned to a single quarter of the resonance wavelength.
  • the first arm 12 and the third arm 14 are aligned parallel to one another and coaxially with respect to the coupling axis 8; the inner conductors 18 and 20 of the arms 12 and 14 are given by the sleeve 21, which extends from the coupling line 5 to the closure 23.
  • the coupling rod 9 is guided out of the sleeve 21 on the closure 23; it ends at an end plate 31 which is connected to the outer conductor 17 of the third arm 14 via a bellows 32.
  • This double quarter wave transformer 25 consists of two connected coaxial cavities, each of which has a length corresponding to a quarter or an odd multiple of a quarter of the resonance wavelength. With the aid of such a double quarter-wave transformer 25, the current load on the sliding contacts 24 can be kept low, which is advantageous for pronounced high-performance applications of the coupling device.
  • the second arm 13 of the T-piece 11 is angled, specifically perpendicular, to the other two arms 12 and 14. Electromagnetic energy must therefore be routed "around the corner" between the feed line 1 and the coupling line 5, which leads to certain distortions of the electromagnetic field and may require minor modifications to the lengths of the three arms 12, 13 and 14. As already explained in more detail, this problem can be overcome without problems using measures known per se.
  • the first arm 12 and the second arm 13 are aligned parallel to one another, and the third arm 14 having the closure 23 is perpendicular thereto.
  • the displacement device 10 is arranged in the sleeve 21, specifically in the part of the sleeve 21 which forms the inner conductor 19 of the second arm 13.
  • the sleeve 21 continues in a straight line into the feed line 1 and also forms it Inner conductor.
  • Connection lines 33 for the displacement device 10 for example cables for supplying an electric linear motor, are passed through the inner conductor 20 and the sleeve 21.
  • the coupling rod 9 can be cooled by passing a cooling fluid, for example water or liquid nitrogen, depending on the application, through a cooling channel 34 in the vicinity of the jet pipe 4.
  • Cooling lines 35 are provided for removing the cooling fluid and are likewise supplied to the coupling rod 9 through the closure 23, the inner conductor 20 of the third arm 14 and the sleeve 21.
  • FIG. 3 shows a window arrangement 26 with which a coupling device of the type of the coupling devices shown in FIG. 1 or 2 can be upgraded if, for example, the entire feed line is not to be evacuated in addition to the coupling device.
  • the window arrangement 26 is coaxial with an inner conductor 28 and an outer conductor 29 with respect to an axis 36, between which an annular, ceramic window 27 is inserted.
  • Such a window 27 leads to a local increase in the capacitance between inner conductor 28 and outer conductor 29 and thus locally changes the characteristic impedance; this is compensated for by the fact that in the inner conductor 28 and the outer conductor 29 on both sides of the window 27 there are inductively effective line arrangements 30, which can be milled into the inner conductor 28 and the outer conductor 29, respectively.
  • Such an arrangement of inductive line arrangements 30 and window 27 represents a third-order low-pass filter which, in the region of a certain wavelength, has a characteristic impedance which corresponds to the characteristic impedance of the other coaxial arrangement.
  • a window arrangement 26 can be inserted into the feed line 1 or also at the point where the feed line 1 enters the first arm 13 of the coupling device.
  • the coupling device for coupling a coaxial feed line to a cavity resonator is characterized by a high bandwidth and renders the use of waveguides as feed lines superfluous.
  • the coupling device is qualified for use in relatively broadband systems and is also suitable for series production, it generally no longer having to be specially adapted to the special requirements of the respective application.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Particle Accelerators (AREA)

Abstract

Dispositif de couplage avec facteur de couplage variable pour le couplage d'une ligne d'alimentation coaxiale (1) avec une cavité résonnante (2) à laquelle est raccordé un tube à faisceau (4) placé parallèlement à un axe de faisceau (3) et dans laquelle un champ électromagnétique résonnant avec une longueur d'ondes de résonnance peut être produit. Le dispositif de couplage comporte une ligne de couplage (5) coaxiale pouvant être raccordée au tube à faisceau (4), dans laquelle une barre de couplage (9) peut coulisser le long d'un axe de couplage (8), et contient pour raccorder la ligne d'alimentation (1) à la ligne de couplage (5) une pièce coaxiale en T (11) à large bande comportant trois bras (12, 13, 14) dont la longueur de chacun correspond à peu près à un multiple impair d'un quart de la longueur d'ondes de résonnance. Le dispositif de couplage se caractérise par une largeur de bande passante particulièrement élevée quant à la longueur d'ondes ou à la fréquence des signaux électromagnétiques à haute fréquence transmissibles. Ce dispositif permet d'utiliser des lignes d'alimentation (1) coaxiales et rend l'emploi de guides d'ondes superflu. Son utilisation est particulièrement indiquée dans les accélérateurs pour les rayonnements d'ions ou de particules élémentaires chargées électriquement. Ce dispositif convient également particulièrement à une application conjointe avec des cavités résonnantes (2) supraconductrices.
PCT/DE1992/001058 1991-12-20 1992-12-17 Dispositif de couplage avec facteur de couplage variable pour le couplage d'une ligne d'alimentation coaxiale avec une cavite resonnante Ceased WO1993013569A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP5511343A JPH07502393A (ja) 1991-12-20 1992-12-17 空洞共振器に同軸供給導波管を連結するための可変結合係数を有する結合装置
KR1019940702154A KR940704071A (ko) 1991-12-20 1992-12-17 공동 공진기에 동축 서플라이 라인을 커플링하기 위한 가변 결합계수를 가진 커플링장치(coupling device with a variable coupling factor for coupling a coaxial supply line to a cavity resonator)
EP93901591A EP0617849A1 (fr) 1991-12-20 1992-12-17 Dispositif de couplage avec facteur de couplage variable pour le couplage d'une ligne d'alimentation coaxiale avec une cavite resonnante

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142219A DE4142219A1 (de) 1991-12-20 1991-12-20 Koppelvorrichtung mit variablem koppelfaktor zur ankopplung einer koaxialen speiseleitung an einen hohlraumresonator
DEP4142219.8 1991-12-20

Publications (1)

Publication Number Publication Date
WO1993013569A1 true WO1993013569A1 (fr) 1993-07-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/001058 Ceased WO1993013569A1 (fr) 1991-12-20 1992-12-17 Dispositif de couplage avec facteur de couplage variable pour le couplage d'une ligne d'alimentation coaxiale avec une cavite resonnante

Country Status (5)

Country Link
EP (1) EP0617849A1 (fr)
JP (1) JPH07502393A (fr)
KR (1) KR940704071A (fr)
DE (1) DE4142219A1 (fr)
WO (1) WO1993013569A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010060815A1 (de) 2010-11-25 2012-05-31 Ri Research Instruments Gmbh Koppelvorrichtung zum Ankoppeln einer Hohlleiter-Speiseleitung an einen Hohlraum-Resonator
CN114980473A (zh) * 2022-05-10 2022-08-30 无锡核力电科技术有限公司 一种调整粒子加速器高频系统寄生振荡频率的方法和装置

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DE4413234A1 (de) * 1994-04-15 1995-10-19 Siemens Ag Koaxiale Anordnung mit einem virtuellen Kurzschluß

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US2644140A (en) * 1945-10-19 1953-06-30 Us Sec War Variable-length transmission line
GB1146287A (en) * 1965-06-01 1969-03-26 Ass Elect Ind Improvements relating to microwave coupling devices
US4286192A (en) * 1979-10-12 1981-08-25 Varian Associates, Inc. Variable energy standing wave linear accelerator structure

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DE2013585B2 (de) * 1970-03-21 1971-07-08 Gesellschaft fur Kernforschung mbH, 7500 Karlsruhe Koppelsystem mit einstellbarem koppelfaktor zum speisen sehr schwach gedaempfter hochfrequenzresona toren
DE3208655C2 (de) * 1982-03-10 1985-08-08 Siemens AG, 1000 Berlin und 8000 München Koppelvorrichtung mit variablem Koppelfaktor für einen supraleitenden Hohlraumresonator

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US2644140A (en) * 1945-10-19 1953-06-30 Us Sec War Variable-length transmission line
GB1146287A (en) * 1965-06-01 1969-03-26 Ass Elect Ind Improvements relating to microwave coupling devices
US4286192A (en) * 1979-10-12 1981-08-25 Varian Associates, Inc. Variable energy standing wave linear accelerator structure

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IEEE TRANSACTIONS ON NUCLEAR SCIENCE Bd. 16, Nr. 3, Juni 1969, NEW YORK US Seiten 362 - 366 J.T. KEANE ET AL. 'The Brookhaven 50-MeV LINAC RF multiport system' *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 393 (E-670)19. Oktober 1988 *
REVIEW OF SCIENTIFIC INSTRUMENTS Bd. 60, Nr. 7, Juli 1989, NEW YORK US Seiten 1736 - 1739 Y. SAITO ET AL. 'Breakdown of alumina rf windows' in der Anmeldung erw{hnt *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010060815A1 (de) 2010-11-25 2012-05-31 Ri Research Instruments Gmbh Koppelvorrichtung zum Ankoppeln einer Hohlleiter-Speiseleitung an einen Hohlraum-Resonator
DE102010060815B4 (de) * 2010-11-25 2013-03-28 Ri Research Instruments Gmbh Koppelvorrichtung zum Ankoppeln einer Hohlleiter-Speiseleitung an einen Hohlraum-Resonator
CN114980473A (zh) * 2022-05-10 2022-08-30 无锡核力电科技术有限公司 一种调整粒子加速器高频系统寄生振荡频率的方法和装置
CN114980473B (zh) * 2022-05-10 2023-09-19 国电投核力电科(无锡)技术有限公司 一种调整粒子加速器高频系统寄生振荡频率的方法和装置

Also Published As

Publication number Publication date
DE4142219A1 (de) 1993-07-01
KR940704071A (ko) 1994-12-12
JPH07502393A (ja) 1995-03-09
EP0617849A1 (fr) 1994-10-05

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