WO2018106593A1 - Ensemble de couplage et système d'amplification radiofréquence ayant ledit ensemble - Google Patents

Ensemble de couplage et système d'amplification radiofréquence ayant ledit ensemble Download PDF

Info

Publication number
WO2018106593A1
WO2018106593A1 PCT/US2017/064502 US2017064502W WO2018106593A1 WO 2018106593 A1 WO2018106593 A1 WO 2018106593A1 US 2017064502 W US2017064502 W US 2017064502W WO 2018106593 A1 WO2018106593 A1 WO 2018106593A1
Authority
WO
WIPO (PCT)
Prior art keywords
segment
coupling
secured
movable
loop
Prior art date
Application number
PCT/US2017/064502
Other languages
English (en)
Inventor
Andreas BACKLUND
Original Assignee
General Electric Company
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
Priority claimed from US15/368,768 external-priority patent/US9859851B2/en
Application filed by General Electric Company filed Critical General Electric Company
Publication of WO2018106593A1 publication Critical patent/WO2018106593A1/fr

Links

Classifications

    • 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
    • H05H7/02—Circuits or systems for supplying or feeding radio-frequency energy
    • 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
    • H05H7/02—Circuits or systems for supplying or feeding radio-frequency energy
    • H05H2007/025—Radiofrequency systems

Definitions

  • the first secured segment is designed to be positioned in a region with a stronger magnetic field than a region where the second secured segment is positioned.
  • the coupling assembly also includes a coupling-control instrument that is attached to the coupling loop. The coupling-control instrument indicates how to move the movable segment to increase or decrease the amount of inductive coupling.
  • the coupling-control instrument includes non-conductive material and has an indicator and at least one reference marker.
  • a position of the indicator with respect to the at least one reference marker approximates the amount of inductive coupling.
  • the indicator or the at least one reference marker is attached to the movable segment and moves with the movable segment while the other has a stationary position.
  • Figure 23 illustrates a relationship between the position of the coupling loop and an amount of coupling.
  • the acceleration chamber is configured to allow charged particles, such as l H ⁇ ions, to be accelerated therein along a predetermined curved path that wraps in a spiral manner about an axis that extends between centers of the opposing pole tops 116, 118.
  • the charged particles are initially positioned proximate to a central region 120 of the acceleration chamber.
  • the path of the charged particles may orbit around the axis that extends between the pole tops 116, 118.
  • the pole top 118 includes hills 122 and valleys 124.
  • the particle accelerator 102 also includes a pair of RF electrodes 126, 128 that are positioned adjacent to the pole top 116.
  • the RF electrodes 126, 128 are sized and shaped to be received within corresponding valleys 124 of the pole tope 118 when the yoke section 112 is closed.
  • the system 100 uses l H ⁇ technology and brings the charged particles (negative hydrogen ions) to a designated energy with a designated beam current.
  • the negative hydrogen ions are accelerated and guided through the particle accelerator 102.
  • the negative hydrogen ions may then hit a stripping foil (not shown) such that a pair of electrons are removed and a positive ion, l H + is formed.
  • the positive ion may be directed into an extraction system (not shown).
  • the charged particles may be positive ions, such as l H + , 2 H + , and 3 He + .
  • the extraction system may include an electrostatic deflector that creates an electric field that guides the particle beam toward the target material.
  • Figure 4 is a partially exploded view of the movable tray assembly 136 in accordance with an embodiment. It should be understood that Figure 4 and the accompanying description illustrate just one example of a movable tray assembly and that other embodiments may be assembled in accordance with the teachings herein. As shown in Figure 4, the grounding deck 146 and a conductor sub-assembly 140 have been separated.
  • the movable tray assembly 136 may include the input inner conductor 174 and a multi-disc capacitor 262 that couples the input inner conductor 174 to the grounding deck 146.
  • the multi-disc capacitor 262 is described in greater detail in U.S. Patent No. 9,455,674, which is incorporated herein by reference in its entirety.
  • the conductive elements 392, 394 may form the perimeter 212.
  • the perimeter 212 is configured to extend alongside and engage conductor walls 221-223 that define an output outer conductor 184 ( Figure 9) of the output cavity resonator 180 ( Figure 9).
  • the conductive elements 384 are configured to engage conductor walls that partially define an input outer conductor 182 of the input cavity resonator 178 ( Figure 9).
  • the mounting holes 322, 324 may align with holes (not shown) of the ledge supports 198, 199, respectively.
  • Hardware e.g., bolts
  • the movable tray assembly 136 may be mounted to an access panel 252 ( Figure 9) or other structure of the generator housing 132.
  • the output length 230 is capable of being adjusted or changed by re-positioning the movable tray assembly 136. More specifically, the movable tray assembly 136 is capable of being positioned at multiple different levels along the longitudinal axis 191. Each level may have a corresponding axial position with respect to the longitudinal axis 191 or a corresponding depth relative to the output shorting deck 155. As used herein, the phrase "multiple different levels" includes discrete levels that are separate or spaced apart from each other, such that the movable tray assembly may have only a limited number of positions.
  • the phrase "multiple different levels” may also include levels that are located along a continuous range, such that the movable tray assembly 136 may be positioned at any position between a maximum and minimum value of the range.
  • the movable tray assembly 136 may be slidable along at least one of the conductors walls 221-223.
  • the electric power generated within the power cavity 161 is transferred by the magnetic coupling loop 216 positioned within the power cavity 161 to an inner conductor 218 that is disposed within the port compartment 164.
  • the inner conductor 218 is located within the inner enclosure 150 and may form a coaxial line 241 with an outer conductor 242 formed by the inner enclosure 150.
  • the inner conductor 218 may have a relatively short length.
  • the length of the inner conductor 218 may be between 200 mm to 500 mm. In particular embodiments, the length of the inner conductor 218 is about 250 to 350 mm.
  • the coaxial line 241 may transmit the electric power through the port compartment 164 to a passage 260 that opens to the exterior.
  • the coaxial line 241 may engage a cable (not shown), such as the power cable 105 ( Figure 1), at the passage 260.
  • FIGS 12 and 13 illustrate a portion of the tuning capacitor assembly
  • the capacitance of the tuning capacitor assembly 204 increases as the height 295 of the tuning capacitor assembly 204 increases, and the capacitance of the tuning capacitor assembly 204 decreases as the height 295 of the tuning capacitor assembly 204 decreases.
  • the tuning sheet 210 may be moved relative to the connector wall 206 to change a capacitance of the output cavity resonator 180 ( Figure 9) and thereby fine tune the output cavity resonator 180.
  • the tuning by moving the tuning sheet 210 may be characterized as fine tuning.
  • FIG 17 is a perspective view of a portion of a RF power generator 400 that includes a coupling assembly 402 disposed within a power cavity 404 of a RF amplification system 401 (only a portion of the RF amplification system 401 is shown).
  • Figure 18 is an enlarged bottom perspective view of the coupling assembly 402 when installed at one operating position within the power cavity 404.
  • the coupling assembly 402 has other operating positions as described below.
  • the RF power generator 400, the RF amplification system 401, and the power cavity 404 may be similar or identical to the RF power generator 130 ( Figure 3), the RF amplification system 170 ( Figure 3), and the power cavity 161 ( Figure 3), respectively.
  • the magnetic field through the fixed section 502 may also account for a substantial portion of the total amount of inductive coupling.
  • the baseline portion of the inductive coupling which is a function of the fixed section 502, may account for at least 25% of a maximum amount of inductive coupling or, more specifically, at least 30% of the maximum amount of inductive coupling or, more specifically, at least 35% of the maximum amount of inductive coupling.
  • the baseline portion may account for at least 40% of the maximum amount of inductive coupling or, more specifically, at least 50% of the maximum amount of inductive coupling.
  • the indicator 550 or the at least one reference marker 552 may be attached to the movable segment 432 ( Figure 17) and move with the movable segment 432 while the other has a stationary position.
  • the panel 556 is secured or affixed to the second longitudinal portion 466 of the movable segment 432 such that the panel 556 (and the at least one reference marker 552) move with the movable segment 432 when the movable segment 432 is rotated.
  • the panel 554 is secured or affixed to the second secured segment 433 such that the panel 554 (and the indicator 550) has a stationary position.
  • a position of the indicator 550 with respect to the at least one reference marker 552 may approximate the amount of inductive coupling.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Plasma Technology (AREA)

Abstract

La présente invention concerne un système d'amplification RF qui comprend une cavité de puissance et une boucle de couplage positionnée de manière fonctionnelle dans la cavité de puissance entre des conducteurs interne et externe. La boucle de couplage comprend un segment fixé qui est couplé à la plate-forme de mise à la masse et un segment mobile qui est couplé au segment fixé. Le segment fixé s'étend entre la plate-forme de mise à la masse et le segment mobile. La boucle de couplage délimite une région de boucle corrélée à une quantité de couplage inductif entre la boucle de couplage et le champ magnétique dans la cavité de puissance. Le segment mobile est mobile par rapport au segment fixé alors que le segment fixé est fixe en vue d'une modification de la taille de la région de boucle, ce qui permet une modification de la quantité de couplage inductif.
PCT/US2017/064502 2016-12-05 2017-12-04 Ensemble de couplage et système d'amplification radiofréquence ayant ledit ensemble WO2018106593A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/368,768 2016-12-05
US15/368,768 US9859851B2 (en) 2014-12-18 2016-12-05 Coupling assembly and radiofrequency amplification system having the same

Publications (1)

Publication Number Publication Date
WO2018106593A1 true WO2018106593A1 (fr) 2018-06-14

Family

ID=60937857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/064502 WO2018106593A1 (fr) 2016-12-05 2017-12-04 Ensemble de couplage et système d'amplification radiofréquence ayant ledit ensemble

Country Status (1)

Country Link
WO (1) WO2018106593A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693582A (en) * 1953-03-11 1954-11-02 Collins Radio Co Variable coupling device
US3733566A (en) * 1971-06-03 1973-05-15 Westinghouse Electric Corp Variable output resonator coupling loop having shorted turn mounted about flexible connecting conductor
US4051447A (en) * 1976-07-23 1977-09-27 Rca Corporation Radio frequency coupler
EP0788184A2 (fr) * 1996-01-31 1997-08-06 Eev Limited Actuateur pour coupleur de cavité
US9337786B1 (en) 2014-12-18 2016-05-10 General Electric Company Multi-layer decoupling capacitor for a tube amplifier assembly
WO2016099622A1 (fr) * 2014-12-18 2016-06-23 General Electric Company Système amplificateur à tube accordable d'un générateur de puissance radiofréquence
US9456532B2 (en) 2014-12-18 2016-09-27 General Electric Company Radio-frequency power generator configured to reduce electromagnetic emissions
US9455674B2 (en) 2014-12-18 2016-09-27 General Electric Company Tube amplifier assembly having a power tube and a capacitor assembly

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693582A (en) * 1953-03-11 1954-11-02 Collins Radio Co Variable coupling device
US3733566A (en) * 1971-06-03 1973-05-15 Westinghouse Electric Corp Variable output resonator coupling loop having shorted turn mounted about flexible connecting conductor
US4051447A (en) * 1976-07-23 1977-09-27 Rca Corporation Radio frequency coupler
EP0788184A2 (fr) * 1996-01-31 1997-08-06 Eev Limited Actuateur pour coupleur de cavité
US9337786B1 (en) 2014-12-18 2016-05-10 General Electric Company Multi-layer decoupling capacitor for a tube amplifier assembly
WO2016099622A1 (fr) * 2014-12-18 2016-06-23 General Electric Company Système amplificateur à tube accordable d'un générateur de puissance radiofréquence
US9456532B2 (en) 2014-12-18 2016-09-27 General Electric Company Radio-frequency power generator configured to reduce electromagnetic emissions
US9455674B2 (en) 2014-12-18 2016-09-27 General Electric Company Tube amplifier assembly having a power tube and a capacitor assembly

Similar Documents

Publication Publication Date Title
US9912308B2 (en) Tube amplifier assembly having a power tube and a capacitor assembly
US9859851B2 (en) Coupling assembly and radiofrequency amplification system having the same
EP3235351B1 (fr) Système amplificateur à tube accordable d'un générateur de puissance radiofréquence
US9456532B2 (en) Radio-frequency power generator configured to reduce electromagnetic emissions
JPH04504174A (ja) 陽電子放射トモグラフィに使用する放射性同位元素製造装置
Ostroumov et al. First simultaneous acceleration of multiple charge states of heavy ion beams in a large-scale superconducting linear accelerator
Vincent et al. The Ionetix ION-12SC compact superconducting cyclotron for production of medical isotopes
WO2018106593A1 (fr) Ensemble de couplage et système d'amplification radiofréquence ayant ledit ensemble
US9337786B1 (en) Multi-layer decoupling capacitor for a tube amplifier assembly
Chen et al. Progress of the RF negative hydrogen ion source for fusion at HUST
Osina et al. Cyclotron of multicharged ions
Ge et al. Multipacting simulation and analysis for the FRIB superconducting resonators using Track3P
Xu et al. SRF development and cryomodule production for the FRIB Linac
Grassellino High Q Development
Kürzeder et al. Measurements of the Beam Break-Up Threshold Current at the Recirculating Electron Accelerator S-DALINAC
Nichols et al. Klynac Design Simulations and Experimental Setup
Devanz Superconducting RF Technology for Proton and Ion Accelerators
Rose et al. Modeling and measurements of the DUVFEL photoinjector cavity rf properties
Serianni et al. Particle transport and heat loads in NIO1
Pollock Design features of the Princeton AVF cyclotron facility
Quinn et al. Overview of Electrical System for the University of Maryland Electron Ring (UMER)
Leemans MOYBA01 Limits and Possibilities of Laser Wakefield Accelerators laser, plasma, coupling, focusing 16
Ballard et al. Ground test accelerator (GTA) Drift Tube Linac (DTL) fabrication and assembly status
Giansiracusa et al. THE EFFECT OF THE SLED INSTALLATION ON EXTRACTED AND LOST BEAM AT THE AUSTRALIAN SYNCHROTRON LINAC

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17825999

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17825999

Country of ref document: EP

Kind code of ref document: A1