GB1332244A - Oscillator for a cyclotron - Google Patents

Oscillator for a cyclotron

Info

Publication number
GB1332244A
GB1332244A GB1723771A GB1723771A GB1332244A GB 1332244 A GB1332244 A GB 1332244A GB 1723771 A GB1723771 A GB 1723771A GB 1723771 A GB1723771 A GB 1723771A GB 1332244 A GB1332244 A GB 1332244A
Authority
GB
United Kingdom
Prior art keywords
oscillator
capacitors
tubes
inner conductor
acceleration electrodes
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
Application number
GB1723771A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1332244A publication Critical patent/GB1332244A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • H03B5/1817—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator
    • H03B5/1835—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator the active element in the amplifier being a vacuum tube
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1332244 Valve oscillator circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 May 1971 [29 May 1970] 17237/71 Heading H3F The invention comprises an oscillator for a cyclotron comprising first and second acceleration electrodes 100, 200 respectively, contained within an envelope 2 and first and second wave tubes 104, 204 respectively, each having an inner conductor 101, 201 and an outer conductor 102, 202, the inner conductors each being connected to a different one of the acceleration electrodes and the outer conductors each being connected to the envelope, each inner conductor being short-circuited to the outer conductor at a position away from its position of connection to the corresponding acceleration electrode. The oscillator comprises first and second thermionic tubes 110, 210 respectively each of which is connected as an oscillator having an output which is coupled to a position on the inner conductor of a different wave tube via a coupling impedance, i.e. capacitors 124, 224, which position lies between the aforesaid positions, an impedance, i.e. series connected capacitors 114, 214 which is predominantly reactive at the operating frequency of the oscillator being connected between the cathodes of the two tubes, and having a reactance such as to constrain the oscillator to oscillate in operation in such a manner that it will drive the acceleration electrodes either in the push-pull mode while excluding the parallel mode or in the parallel mode while excluding the push-pull mode. In the embodiment each of the oscillator tubes has an inductor 112, 212 respectively in one filament lead, of tubular form with the other filament lead 115, 215 respectively running through its centre; these inductors are tuned by capacitors 113, 213 respectively and oscillation is produced by feedback from the anodes over capacitors 124, 224 respectively.
GB1723771A 1970-05-29 1971-05-26 Oscillator for a cyclotron Expired GB1332244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7007871A NL7007871A (en) 1970-05-29 1970-05-29

Publications (1)

Publication Number Publication Date
GB1332244A true GB1332244A (en) 1973-10-03

Family

ID=19810200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1723771A Expired GB1332244A (en) 1970-05-29 1971-05-26 Oscillator for a cyclotron

Country Status (6)

Country Link
US (1) US3689847A (en)
CH (1) CH530749A (en)
DE (1) DE2121907A1 (en)
FR (1) FR2093884A5 (en)
GB (1) GB1332244A (en)
NL (1) NL7007871A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101061759B (en) * 2004-07-21 2011-05-25 斯蒂尔瑞弗系统有限公司 A programmable radio frequency waveform generator for a synchrocyclotron
US7315140B2 (en) * 2005-01-27 2008-01-01 Matsushita Electric Industrial Co., Ltd. Cyclotron with beam phase selector
EP1883329A2 (en) * 2005-05-02 2008-02-06 Felicity Huffman Maternity pillow
EP2389983B1 (en) 2005-11-18 2016-05-25 Mevion Medical Systems, Inc. Charged particle radiation therapy
US8003964B2 (en) 2007-10-11 2011-08-23 Still River Systems Incorporated Applying a particle beam to a patient
US8581523B2 (en) 2007-11-30 2013-11-12 Mevion Medical Systems, Inc. Interrupted particle source
US8933650B2 (en) 2007-11-30 2015-01-13 Mevion Medical Systems, Inc. Matching a resonant frequency of a resonant cavity to a frequency of an input voltage
US8927950B2 (en) 2012-09-28 2015-01-06 Mevion Medical Systems, Inc. Focusing a particle beam
US10254739B2 (en) 2012-09-28 2019-04-09 Mevion Medical Systems, Inc. Coil positioning system
WO2014052709A2 (en) 2012-09-28 2014-04-03 Mevion Medical Systems, Inc. Controlling intensity of a particle beam
EP3581243A1 (en) 2012-09-28 2019-12-18 Mevion Medical Systems, Inc. Controlling particle therapy
US9622335B2 (en) 2012-09-28 2017-04-11 Mevion Medical Systems, Inc. Magnetic field regenerator
EP2901820B1 (en) 2012-09-28 2021-02-17 Mevion Medical Systems, Inc. Focusing a particle beam using magnetic field flutter
WO2014052708A2 (en) 2012-09-28 2014-04-03 Mevion Medical Systems, Inc. Magnetic shims to alter magnetic fields
US9301384B2 (en) 2012-09-28 2016-03-29 Mevion Medical Systems, Inc. Adjusting energy of a particle beam
WO2014052721A1 (en) 2012-09-28 2014-04-03 Mevion Medical Systems, Inc. Control system for a particle accelerator
US8791656B1 (en) 2013-05-31 2014-07-29 Mevion Medical Systems, Inc. Active return system
US9730308B2 (en) 2013-06-12 2017-08-08 Mevion Medical Systems, Inc. Particle accelerator that produces charged particles having variable energies
EP3049151B1 (en) 2013-09-27 2019-12-25 Mevion Medical Systems, Inc. Particle beam scanning
US10675487B2 (en) 2013-12-20 2020-06-09 Mevion Medical Systems, Inc. Energy degrader enabling high-speed energy switching
US9962560B2 (en) 2013-12-20 2018-05-08 Mevion Medical Systems, Inc. Collimator and energy degrader
US9661736B2 (en) 2014-02-20 2017-05-23 Mevion Medical Systems, Inc. Scanning system for a particle therapy system
US9950194B2 (en) 2014-09-09 2018-04-24 Mevion Medical Systems, Inc. Patient positioning system
US10786689B2 (en) 2015-11-10 2020-09-29 Mevion Medical Systems, Inc. Adaptive aperture
WO2018009779A1 (en) 2016-07-08 2018-01-11 Mevion Medical Systems, Inc. Treatment planning
US11103730B2 (en) 2017-02-23 2021-08-31 Mevion Medical Systems, Inc. Automated treatment in particle therapy
WO2019006253A1 (en) 2017-06-30 2019-01-03 Mevion Medical Systems, Inc. Configurable collimator controlled using linear motors
WO2020185543A1 (en) 2019-03-08 2020-09-17 Mevion Medical Systems, Inc. Collimator and energy degrader for a particle therapy system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701304A (en) * 1951-05-31 1955-02-01 Gen Electric Cyclotron

Also Published As

Publication number Publication date
FR2093884A5 (en) 1972-01-28
DE2121907A1 (en) 1971-12-09
CH530749A (en) 1972-11-15
NL7007871A (en) 1971-12-01
US3689847A (en) 1972-09-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees