FR2334194A1 - Short impulse electron gun for particle accelerator - has pulsed light beam falling on photocathode providing electrons to electron multiplier - Google Patents

Short impulse electron gun for particle accelerator - has pulsed light beam falling on photocathode providing electrons to electron multiplier

Info

Publication number
FR2334194A1
FR2334194A1 FR7537320A FR7537320A FR2334194A1 FR 2334194 A1 FR2334194 A1 FR 2334194A1 FR 7537320 A FR7537320 A FR 7537320A FR 7537320 A FR7537320 A FR 7537320A FR 2334194 A1 FR2334194 A1 FR 2334194A1
Authority
FR
France
Prior art keywords
photocathode
block
electron
light beam
pulsed light
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.)
Granted
Application number
FR7537320A
Other languages
French (fr)
Other versions
FR2334194B1 (en
Inventor
Andre Bensussan
Francoise Vejnar
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.)
CGR MEV SA
Original Assignee
CGR MEV SA
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 CGR MEV SA filed Critical CGR MEV SA
Priority to FR7537320A priority Critical patent/FR2334194A1/en
Publication of FR2334194A1 publication Critical patent/FR2334194A1/en
Application granted granted Critical
Publication of FR2334194B1 publication Critical patent/FR2334194B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/24—Dynodes having potential gradient along their surfaces
    • H01J43/246—Microchannel plates [MCP]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/023—Electron guns using electron multiplication

Landscapes

  • Electron Sources, Ion Sources (AREA)

Abstract

The electron gun providing short pulsed emission includes a pulsed source of optical radiation with an optical appts. for directing the ray on to a photoemissive material, or photocathode. Under the impact of the rays of light the cathode emits electrons. An electron multiplier providing a secondary electron emission comprises a number of microchannels forming a multiplying block. This block has electrically conducting entry and exit faces, the exit face being positively polarised w.r.t. the entry face. Downstream of the block are two electrodes, the first of which is at the same potential as the block exit face and the second being more positive to ensure acceleration and focussing of the electrons.
FR7537320A 1975-12-05 1975-12-05 Short impulse electron gun for particle accelerator - has pulsed light beam falling on photocathode providing electrons to electron multiplier Granted FR2334194A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7537320A FR2334194A1 (en) 1975-12-05 1975-12-05 Short impulse electron gun for particle accelerator - has pulsed light beam falling on photocathode providing electrons to electron multiplier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7537320A FR2334194A1 (en) 1975-12-05 1975-12-05 Short impulse electron gun for particle accelerator - has pulsed light beam falling on photocathode providing electrons to electron multiplier

Publications (2)

Publication Number Publication Date
FR2334194A1 true FR2334194A1 (en) 1977-07-01
FR2334194B1 FR2334194B1 (en) 1978-05-12

Family

ID=9163388

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7537320A Granted FR2334194A1 (en) 1975-12-05 1975-12-05 Short impulse electron gun for particle accelerator - has pulsed light beam falling on photocathode providing electrons to electron multiplier

Country Status (1)

Country Link
FR (1) FR2334194A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0602982A1 (en) * 1992-12-17 1994-06-22 Intevac, Inc. Focused electron-bombarded detector
EP2843398A1 (en) * 2013-09-02 2015-03-04 Fenno-Aurum OY Electron source and X-ray fluorescence analyser using an electron source

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114501758A (en) * 2022-01-11 2022-05-13 长春理工大学 High flux X ray source

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0602982A1 (en) * 1992-12-17 1994-06-22 Intevac, Inc. Focused electron-bombarded detector
EP0602983A1 (en) * 1992-12-17 1994-06-22 Intevac, Inc. Hybrid photomultiplier tube with high sensitivity
US5374826A (en) * 1992-12-17 1994-12-20 Intevac, Inc. Hybrid photomultiplier tube with high sensitivity
EP2843398A1 (en) * 2013-09-02 2015-03-04 Fenno-Aurum OY Electron source and X-ray fluorescence analyser using an electron source

Also Published As

Publication number Publication date
FR2334194B1 (en) 1978-05-12

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Legal Events

Date Code Title Description
ST Notification of lapse