WO2013043895A1 - Procédé et appareil pour un magnétron à onde continue (cw) de 650 mhz de grande puissance pour des accélérateurs supraconducteurs à limite d'intensité - Google Patents

Procédé et appareil pour un magnétron à onde continue (cw) de 650 mhz de grande puissance pour des accélérateurs supraconducteurs à limite d'intensité Download PDF

Info

Publication number
WO2013043895A1
WO2013043895A1 PCT/US2012/056372 US2012056372W WO2013043895A1 WO 2013043895 A1 WO2013043895 A1 WO 2013043895A1 US 2012056372 W US2012056372 W US 2012056372W WO 2013043895 A1 WO2013043895 A1 WO 2013043895A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetron
power
magnetrons
injection
continuous wave
Prior art date
Application number
PCT/US2012/056372
Other languages
English (en)
Inventor
Grigory KAZAKEVICH
Viyacheslav YAKOVLEV
Frank Marhauser
Michael Neubauer
Original Assignee
Muons, Inc.
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 Muons, Inc. filed Critical Muons, Inc.
Publication of WO2013043895A1 publication Critical patent/WO2013043895A1/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 present disclosure is generally related to developing 650 MHz continuous wave (CW) 130 kW magnetrons and, in particular, to operating the 650 MHz continuous wave (CW) 130 kW magnetrons in injection-locked mode to drive superconducting cavities.
  • a device in a particular embodiment, includes means for developing 650 MHz continuous wave (CW) 130 kW magnetrons.
  • the device also includes means for operating the 650 MHz continuous wave (CW) 130 kW magnetrons in injection- locked mode to drive superconducting cavities.
  • the method also includes steps for operating the 650 MHz continuous wave (CW) 130 kW magnetrons in injection-locked mode to drive superconducting cavities.
  • Figure 1 is a diagram illustrating a conceptual scheme of the two-stage two-channel continuous wave (CW) magnetron generator with rapid control in power and phase;
  • CW continuous wave
  • Figure 2 is a diagram illustrating B- measured intrapulse frequency instability of the frequency-locked magnetron relative to the forcing signal frequency, left axis. E- measured variations of the magnetron current in relative units, right axis;
  • Figure 4 is a diagram illustrating an embodiment of an apparatus including means for developing 650 MHz continuous wave (CW) 130 kW magnetrons and means for operating the 650 MHz continuous wave (CW) 130 kW magnetrons in injection-locked mode to drive superconducting cavities; and
  • Figure 5 is a flow diagram of an illustrative embodiment of a method including steps for developing 650 MHz continuous wave (CW) 130 kW magnetrons and operating the 650 MHz continuous wave (CW) 130 kW magnetrons in injection-locked mode to drive superconducting cavities.
  • CW continuous wave
  • CW continuous wave
  • FIG. 1 a diagram illustrating a conceptual scheme of the two-stage two- channel continuous wave (CW) magnetron generator with rapid control in power and phase is depicted and indicated generally, for example, at 100.
  • CW continuous wave
  • instability of the frequency-locked magnetron relative to the forcing signal frequency, left axis, and E- measured variations of the magnetron current in relative units, right axis is depicted and indicated generally, for example, at 200.
  • FIG. 4 a diagram illustrating an embodiment of an apparatus is depicted and indicated generally, for example, at 400.
  • the apparatus 400 includes means for developing 650 MHz continuous wave (CW) 130 kW magnetrons 410 and means for operating the 650 MHz continuous wave (CW) 130 kW magnetrons in injection-locked mode to drive superconducting cavities 420.
  • CW continuous wave
  • FIG. 5 a flow diagram of an illustrative embodiment of a method is depicted and indicated generally, for example, at 500.
  • the method 500 includes steps for developing 650 MHz continuous wave (CW) 130 kW magnetrons 510 and steps for operating the 650 MHz continuous wave (CW) 130 kW magnetrons in injection-locked mode to drive superconducting cavities 520.
  • the present invention is well adapted to carry out the objects and attain the ends and advantages mentioned, as well as those that are inherent therein. While the present invention has been depicted, described and is defined by reference to exemplary embodiments of the present invention, such a reference does not imply a limitation of the present invention, and no such limitation is to be inferred. The present invention is capable of considerable modification, alteration, and equivalency in form and function as will occur to those of ordinary skill in the pertinent arts having the benefit of this disclosure. The depicted and described embodiments of the present invention are exemplary only and are not exhaustive of the scope of the present invention.
  • PROJECT TITLE High-power 650 MHz CW magnetron for intensity frontier
  • the RF source with rapid control in power and phase, will provide about of 250 kW of total RF power for acceleration of a beam with an average current up to 10 mA, at a gradient up to 25 MV/m. This is suitable for intensity-frontier physics, and also Accelerator Driven System (ADS) applications.
  • ADS Accelerator Driven System
  • RF sources based on magnetrons will be both precise and stable; they will have rapid phase and power control; and they can power RF cavities operating with 1-10 mA average beam current in linacs capable of accelerating protons and ions to several GeV.
  • the potential market for such devices is substantial.
  • KEY WORDS ADS, injection-locking, magnetron, phase stability.
  • High-intensity accelerators of proton and ion beams with Superconducting Cavities (SC) intended for operation with 1-10 mA of average beam current in linacs capable of accelerating protons and ions to several GeV are at the state of the art for the accelerator and nuclear physics industries. They are basis for Accelerator Driven Systems (ADS) which have evoked interest all over the world because of their capability to incinerate the minor actinides and long-lived fission products of radiotoxic waste, and because they allow utilization of Thorium as a nuclear fuel.
  • ADS Accelerator Driven Systems
  • - RF sources based on CW magnetrons may have higher efficiency than those based on klystrons and IOTs.
  • - CW magnetrons require 1 -20 kV power sources which are more reliable, are less expensive and do not require oil-isolated elements; unlike the traditional TV klystrons or IOTs that have been proposed to feed superconducting accelerators.
  • injection-locked magnetrons can provide acceptable phase and power stability for the requirements of feeding of the superconducting cavities.
  • RF sources based on CW injection- locked magnetrons at the frequency of more than 500 MHz are the most appropriate for the requirements of the intensity frontier GeV-range accelerators.
  • MuPlus Inc. in collaboration with the Accelerator Division and Technical Division of the Fermi National Accelerator Laboratory, submits this proposal to develop a novel 650 MHz CW magnetron intended for operation in phase-locked mode for high-intensity proton and ion linacs with Superconducting Cavities (SC), capable of accelerating protons and ions to several GeV with 1-10 mA of average beam current. Development of such magnetron is highly important for Accelerator Driven Systems (ADS). Moreover development of a similar magnetron with lower power would be highly important for the CW 3 GeV linac of the Project X; it may reduce the cost and improve the operating parameters of the facility.
  • ADS Accelerator Driven Systems
  • the developed magnetron should be a base component for a concept of a proposed RF source, Figure 1, [1], which is intended to feed individually the linac cavities, and thus allow for independent and rapid phase and amplitude control of each cavity voltage (an important factor for linacs accelerating non-relativistic or weekly-relativistic particles, such as GeV-scale protons).
  • Figure 1 Conceptual scheme of the two-stage two-channel CW magnetron generator with rapid control in power and phase.
  • V a - 25 MV is the accelerating voltage
  • (TTF) is transient-time factor
  • ⁇ is phase of the beam.
  • (TTF) ⁇ cos ⁇ « 0.8 one gets P a ⁇ 200 kW.
  • the required magnetron power of 120-130 kW is enough to accelerate up to 10 mA proton beam in superconducting ILC-type cavities with the proposed RF source at some overhead.
  • the RF source should provide amplitude instability of ⁇ 1% and phase instability ⁇ 1 degree at rapid and independent control of each parameter.
  • the injection-locking signal, magnetron current, accelerating cavity loading current, and the accelerating cavity feeding wave amplitudes are measured or simulated in real time, and then solving for the abridged equations we simulated in real time the frequency of the injection-locked S-band 2.5 MW pulsed magnetron at given parameters of operation.
  • the magnetron injection-locked with a wave reflected from the accelerating cavity at initial reflected power of -18 dB were obtained results of the simulation which are in an excellent agreement with measurements, [3, 4].
  • Figure 2 B- measured intrapulse frequency instability of the frequency- locked magnetron relatively the forcing signal frequency, left axis. E- measured variations of the magnetron current in relative units, right axis. The measured plots show that the magnetron frequency does not depend on the magnetron current increment in the range of frequency locking. Measured oscillations of the magnetron frequency which are in fact in-phase with deviations of the measured magnetron current are caused most likely by insufficient isolation of the measured RF signal from grounding bus-bar, common with 7 MW magnetron pulsed modulator.
  • the novel CW high power magnetron developed based on the 650 MHz CW magnetron conceptual project, a fundamental part of the Phase I proposal, should be a base component for development of CW 650 MHz RF sources accordingly to proposed concept, [1], and intended to feed superconducting cavity with precise and rapid phase and power control for acceleration of protons and ions with average current 1-10 mA in GeV-scale accelerators. d. Anticipated Public Benefits
  • CPI which is not only the largest manufacturer of high power magnetrons in the United States, but a large manufacturer of components for accelerators, including superconducting accelerators, has expressed interest and support for the Phase ⁇ proposal, see the Appendix 1 , CPI Letter of Support,
  • the goals of the Phase 1 project are:

Landscapes

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

Abstract

La présente invention se rapporte, dans un mode de réalisation particulier, à un dispositif qui comprend des moyens pour développer des magnétrons de 130 kW à onde continue (CW pour Continuous Wave) de 650 MHz. Le dispositif comprend également des moyens pour faire fonctionner les magnétrons de 130 kW à onde continue (CW) de 650 MHz dans un mode verrouillé par injection pour exciter des cavités supraconductrices. Selon un autre mode de réalisation particulier, la présente invention porte sur un procédé qui comprend les étapes consistant à développer des magnétrons de 130 kW à onde continue (CW) de 650 MHz. Le procédé comprend également des étapes pour faire fonctionner les magnétrons de 130 kW à onde continue (CW) de 650 MHz dans un mode verrouillé par injection pour exciter des cavités supraconductrices.
PCT/US2012/056372 2011-09-20 2012-09-20 Procédé et appareil pour un magnétron à onde continue (cw) de 650 mhz de grande puissance pour des accélérateurs supraconducteurs à limite d'intensité WO2013043895A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161536588P 2011-09-20 2011-09-20
US61/536,588 2011-09-20

Publications (1)

Publication Number Publication Date
WO2013043895A1 true WO2013043895A1 (fr) 2013-03-28

Family

ID=47914865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/056372 WO2013043895A1 (fr) 2011-09-20 2012-09-20 Procédé et appareil pour un magnétron à onde continue (cw) de 650 mhz de grande puissance pour des accélérateurs supraconducteurs à limite d'intensité

Country Status (1)

Country Link
WO (1) WO2013043895A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2143767C1 (ru) * 1998-06-02 1999-12-27 ЗАО "ОКБ-Тантал" Магнетрон для свч-нагрева
US20030222586A1 (en) * 2000-08-04 2003-12-04 General Atomics Apparatus and method for forming a high pressure plasma discharge column
US20080128641A1 (en) * 2006-11-08 2008-06-05 Silicon Genesis Corporation Apparatus and method for introducing particles using a radio frequency quadrupole linear accelerator for semiconductor materials
US20110188638A1 (en) * 2010-01-29 2011-08-04 Accuray, Inc. Magnetron Powered Linear Accelerator For Interleaved Multi-Energy Operation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2143767C1 (ru) * 1998-06-02 1999-12-27 ЗАО "ОКБ-Тантал" Магнетрон для свч-нагрева
US20030222586A1 (en) * 2000-08-04 2003-12-04 General Atomics Apparatus and method for forming a high pressure plasma discharge column
US20080128641A1 (en) * 2006-11-08 2008-06-05 Silicon Genesis Corporation Apparatus and method for introducing particles using a radio frequency quadrupole linear accelerator for semiconductor materials
US20110188638A1 (en) * 2010-01-29 2011-08-04 Accuray, Inc. Magnetron Powered Linear Accelerator For Interleaved Multi-Energy Operation

Similar Documents

Publication Publication Date Title
Wangler RF Linear accelerators
Vretenar Linear accelerators
Houck et al. Prototype microwave source for a relativistic klystron two-beam accelerator
US20230262870A1 (en) A compact cyclotron resonance high-power acceleration for electrons
Vretenar Radio frequency for particle accelerators: Evolution and anatomy of a technology
Wei et al. CHINA SPALLATION NEUTRON SOURCE ACCELERATORS: DESIGN, RESEARCH, AND DEVELOPMENT.
WO2013043895A1 (fr) Procédé et appareil pour un magnétron à onde continue (cw) de 650 mhz de grande puissance pour des accélérateurs supraconducteurs à limite d'intensité
Fu et al. Status and challenges of the China spallation neutron source
Pasternak et al. Accelerator and particle physics research for the next generation muon to electron conversion experiment-the PRISM task force
Cho et al. 100 MeV High-Duty-Factor Proton Linac Development at KAERI
Antipov et al. Stripline kicker for integrable optics test accelerator
Antipov et al. Electron linacs in NSC KIPT: R&D and application
Bazanov et al. Commissioning of New Light Ion RFQ Linac and First Nuclotron Run with New Injector
PAMELA Collaboration et al. Status of Pamela: An UK particle therapy facility project using NS-FFAG
Kulevoy et al. Compact multipurpose facility-BELA
Sipahi et al. RF Design of a 1.3-GHz High Average Beam Power SRF Electron Source
Shinto et al. Present Status of the accelerator system in the IFMIF/EVEDA project
Wang et al. Beam commissioning of the coupled RFQ-SFRFQ cavity
Sipahi et al. Frequency Domain Simulations of Rf Cavity Structures and Coupler Designs for Co-Linear X-Band Energy Booster (CXEB) with ACE3P
Klysubun et al. Siam Photon Source: Present machine status and future upgrades
Brennan et al. Upgrading the AGS to 1 MW proton beam power
Sipahi et al. Beam-driven co-linear X-band energy booster (CXEB) for a compact FEL
Garnett Active interrogation probe technologies
Holmes et al. Project X: a flexible high power proton facility
Garoby Status and Plans of the SPL Study at CERN

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: 12833895

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: 12833895

Country of ref document: EP

Kind code of ref document: A1