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Operation of a high-current drive beam electron gun prototype for the Compact Linear Collider

The high-average current electron gun low energy electrons from a thermionic cathode at high intensity is the prototype of the drive beam source for the Compact Linear Collider project. The electromagnetic design of the gun was done originally with 2D simulations to minimize the beam emittance for h...

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Detalles Bibliográficos
Autores principales: Cassany, B, Doebert, S, Gardelle, J, Garolfi, L
Lenguaje:eng
Publicado: 2020
Acceso en línea:https://dx.doi.org/10.1063/5.0013144
http://cds.cern.ch/record/2744723
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author Cassany, B
Doebert, S
Gardelle, J
Garolfi, L
author_facet Cassany, B
Doebert, S
Gardelle, J
Garolfi, L
author_sort Cassany, B
collection CERN
description The high-average current electron gun low energy electrons from a thermionic cathode at high intensity is the prototype of the drive beam source for the Compact Linear Collider project. The electromagnetic design of the gun was done originally with 2D simulations to minimize the beam emittance for high-current operation (of the order of 8 A) at 140 keV. This paper reports on the first experimental measurements of beam extraction and transport. For the first time, 3D tracking simulations, which take into account precisely the cathode–grid geometry, have been compared with experimental optical transition radiation images of the beam, and we obtained impressive agreement. In addition, we have confirmed that the details of the cathode–grid assembly can impact significantly the beam emittance.
id oai-inspirehep.net-1822395
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
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spelling oai-inspirehep.net-18223952021-08-05T08:06:07Zdoi:10.1063/5.0013144http://cds.cern.ch/record/2744723engCassany, BDoebert, SGardelle, JGarolfi, LOperation of a high-current drive beam electron gun prototype for the Compact Linear ColliderThe high-average current electron gun low energy electrons from a thermionic cathode at high intensity is the prototype of the drive beam source for the Compact Linear Collider project. The electromagnetic design of the gun was done originally with 2D simulations to minimize the beam emittance for high-current operation (of the order of 8 A) at 140 keV. This paper reports on the first experimental measurements of beam extraction and transport. For the first time, 3D tracking simulations, which take into account precisely the cathode–grid geometry, have been compared with experimental optical transition radiation images of the beam, and we obtained impressive agreement. In addition, we have confirmed that the details of the cathode–grid assembly can impact significantly the beam emittance.oai:inspirehep.net:18223952020
spellingShingle Cassany, B
Doebert, S
Gardelle, J
Garolfi, L
Operation of a high-current drive beam electron gun prototype for the Compact Linear Collider
title Operation of a high-current drive beam electron gun prototype for the Compact Linear Collider
title_full Operation of a high-current drive beam electron gun prototype for the Compact Linear Collider
title_fullStr Operation of a high-current drive beam electron gun prototype for the Compact Linear Collider
title_full_unstemmed Operation of a high-current drive beam electron gun prototype for the Compact Linear Collider
title_short Operation of a high-current drive beam electron gun prototype for the Compact Linear Collider
title_sort operation of a high-current drive beam electron gun prototype for the compact linear collider
url https://dx.doi.org/10.1063/5.0013144
http://cds.cern.ch/record/2744723
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AT doeberts operationofahighcurrentdrivebeamelectrongunprototypeforthecompactlinearcollider
AT gardellej operationofahighcurrentdrivebeamelectrongunprototypeforthecompactlinearcollider
AT garolfil operationofahighcurrentdrivebeamelectrongunprototypeforthecompactlinearcollider