Title:
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A novel electron gun for off-beam injection
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Author:
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Koubychine Merkulov, Youri Alexandrovich; Aloev, A.V.; Shvedunov, V.I.; Pakhomov, N.I.
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Other authors:
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Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques; Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions |
Abstract:
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For certain type of electron accelerators injection from an
off-axis cathode is required. This is the case of a racetrack
microtron (RTM), in which the beam passes several
times through the accelerating structure, or of a high
power standing wave electron linac, for which the lifetime
of an on-axis cathode would be strongly reduced by the
electron back-bombardment. The standard solution with
the beam injection via a dipole magnet from an electron
gun placed off-axis is too bulky, moreover in case of
RTMs it requires special compensating dipoles. An
annular ring cathode gun used in some accelerators leads
to large beam emittance and divergence. As a new
solution we describe a 3D on-axis electron gun with an
off-axis cathode and a central hole for the beam passage.
Results of the design optimization and performance of an
electron gun built for a miniature 12 MeV RTM for
medical applications are presented. We also discuss
results of the beam parameters measurements and
estimates of the beam emittance. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica -Àrees temàtiques de la UPC::Física::Física de partícules -Microtrons -Electron accelerators -Electrons -Enginyeria biomèdica |
Rights:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Published version Conference Object |
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