NDLI: A gun design criterion to limit the effects of the electron beam halo in gyrotrons

Content Provider	IEEE Xplore Digital Library
Author	Pagonakis, I.G. Illy, S. Rzesnicki, T. Piosczyk, B. Avramidis, K. Thumm, M. Gantenbein, G. Jelonnek, J. Hogge, J.-P. Alberti, S.
Copyright Year	2013
Description	Author affiliation: Karlsruhe Inst. of Technol., Assoc. EURATOM-KIT, Karlsruhe, Germany (Pagonakis, I.G.; Illy, S.; Rzesnicki, T.; Piosczyk, B.; Avramidis, K.; Thumm, M.; Gantenbein, G.; Jelonnek, J.) \|\| EPFL-CRPP, Assoc. EURATOM-Confederation Suisse, Lausanne, Switzerland (Hogge, J.-P.; Alberti, S.)
Abstract	An important issue in gyrotron operation is the halo of the electron beam of the magnetron injection gun (MIG). It is formed by magnetically trapped electrons between the cathode and the cavity. These magnetically trapped electrons are generated by several sources, such as the roughness of the emitter ring, the secondary emission from other parts of the cathode surface, etc. The effects of the beam halo can be dramatic in gyrotron operation. As an example of such a dramatic influence of the electron beam halo on the operation of the gyrotron, the instabilities observed in the operation of the first industrial prototype EU coaxial cavity gyrotron will be presented. The positions of the damages found during the inspection of the tube indicate that the observed instabilities were absolutely correlated with the electron beam halo. A simple criterion for MIG design is proposed in order to limit the generation of the beam halo. This criterion has been already taken into account for the gun design of the refurbished $1^{st}$ prototype coaxial cavity gyrotron. The experiments on this tube showed no electron beam halo effects and instabilities. This important criterion has also been applied for the gun design of the new EU 1MW conventional cavity gyrotron for ITER.
Starting Page	1
Ending Page	1
File Size	440095
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6635123
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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