CA1070440A - Electron beam collimator - Google Patents

Electron beam collimator

Info

Publication number
CA1070440A
CA1070440A CA265,301A CA265301A CA1070440A CA 1070440 A CA1070440 A CA 1070440A CA 265301 A CA265301 A CA 265301A CA 1070440 A CA1070440 A CA 1070440A
Authority
CA
Canada
Prior art keywords
tube structure
wall
wall portions
bars
another
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
CA265,301A
Other languages
English (en)
French (fr)
Inventor
Jack Peacock
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1070440A publication Critical patent/CA1070440A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/10—Tubes with a single discharge path having electrostatic control means only with one or more immovable internal control electrodes, e.g. triode, pentode, octode
    • H01J21/14—Tubes with means for concentrating the electron stream, e.g. beam tetrode

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Measurement Of Radiation (AREA)
  • Radiation-Therapy Devices (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Particle Accelerators (AREA)
CA265,301A 1975-11-13 1976-11-10 Electron beam collimator Expired CA1070440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46891/75A GB1530449A (en) 1975-11-13 1975-11-13 Electron beam collimator

Publications (1)

Publication Number Publication Date
CA1070440A true CA1070440A (en) 1980-01-22

Family

ID=10442968

Family Applications (1)

Application Number Title Priority Date Filing Date
CA265,301A Expired CA1070440A (en) 1975-11-13 1976-11-10 Electron beam collimator

Country Status (7)

Country Link
US (1) US4053808A (https=)
JP (2) JPS5263784A (https=)
CA (1) CA1070440A (https=)
DE (1) DE2649393C3 (https=)
FR (1) FR2331868A1 (https=)
GB (1) GB1530449A (https=)
SE (1) SE410249B (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759073C3 (de) * 1977-12-30 1981-10-22 Siemens AG, 1000 Berlin und 8000 München Elektronentubus
US4158143A (en) * 1978-04-07 1979-06-12 Bbc Brown, Boveri & Company Limited Tube for irradiation equipment
US4314158A (en) * 1980-04-01 1982-02-02 Siemens Medical Laboratories, Inc. Electron applicator for a linear accelerator
US4550258A (en) * 1982-07-27 1985-10-29 Nippon Telegraph & Telephone Public Corporation Aperture structure for charged beam exposure
US4739173A (en) * 1986-04-11 1988-04-19 Board Of Trustees Operating Michigan State University Collimator apparatus and method
EP0398335B1 (en) * 1989-05-17 1996-05-01 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Converged ion beam apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1959756A (en) * 1931-08-19 1934-05-22 Pittsburgh Crucible Steel Comp Columnar structure
US2840257A (en) * 1957-06-12 1958-06-24 Zeni Adolph Expandable container
GB1414843A (en) * 1973-04-17 1975-11-19 Mel Equipment Co Ltd Electron collimator
DE2446680C3 (de) * 1974-09-30 1980-10-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Tubus zur Begrenzung eines Bündels durchdringender Strahlen

Also Published As

Publication number Publication date
SE410249B (sv) 1979-10-01
SE7612495L (sv) 1977-05-14
DE2649393A1 (de) 1977-05-26
DE2649393C3 (de) 1980-11-13
GB1530449A (en) 1978-11-01
JPS5263784A (en) 1977-05-26
FR2331868B1 (https=) 1982-05-14
FR2331868A1 (fr) 1977-06-10
JPS5661500U (https=) 1981-05-25
DE2649393B2 (https=) 1980-03-20
US4053808A (en) 1977-10-11

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