NDLI: A Gridded Thermionic Injector Gun for High-Average-Power Free-Electron Lasers

Content Provider	IEEE Xplore Digital Library
Author	Mitchell, C. Sprangle, P. Peñano, J.
Copyright Year	1973
Abstract	High-average-power free-electron lasers (FELs) require high-average-current injectors capable of generating high-quality short-duration electron bunches with a repetition rate equal to the frequency of the energy-recovery linac (~700 MHz). We present an injector configuration that utilizes an RF-gated gridded thermionic cathode inset into a 700-MHz RF cavity. The grid is independently modulated using RF power at one or more harmonics of the main cavity frequency, in order to gate emission from the cathode surface. Two- and three-dimensional particle-in-cell simulations of this configuration were performed using the gun/collector modeling code MICHELLE. Simulations indicate that this approach can provide the necessary charge per bunch, bunch duration, beam quality, and repetition rate for high-average-power FELs operating in the infrared regime.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1977
Ending Page	1983
Page Count	7
File Size	799995
File Format	PDF
ISSN	00933813
Volume Number	40
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cathodes Cavity resonators Radio frequency Wires Harmonic analysis Solid modeling Power system harmonics thermionic injectors Electron linear accelerators free-electron laser (FEL)
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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