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Design of a High Average Current Electron Source for the CLIC Drive Beam Injector

The drive beam injector for CLIC needs to deliver a 4.2 A electron beam for a duration of 140 μs with a repetition rate of 50 Hz. The shot to shot and flat top current stability has to be better than 0.1% to guarantee the beam stability required for CLIC. Based on the experience with the CTF3 inject...

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Detalles Bibliográficos
Autores principales: Döbert, Steffen, Chritin, Nicolas, Cadilhon, Baptiste, Cassany, Bruno, Gardelle, Jacques, Pepitone, Kevin
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:http://cds.cern.ch/record/2025953
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author Döbert, Steffen
Chritin, Nicolas
Cadilhon, Baptiste
Cassany, Bruno
Gardelle, Jacques
Pepitone, Kevin
author_facet Döbert, Steffen
Chritin, Nicolas
Cadilhon, Baptiste
Cassany, Bruno
Gardelle, Jacques
Pepitone, Kevin
author_sort Döbert, Steffen
collection CERN
description The drive beam injector for CLIC needs to deliver a 4.2 A electron beam for a duration of 140 μs with a repetition rate of 50 Hz. The shot to shot and flat top current stability has to be better than 0.1% to guarantee the beam stability required for CLIC. Based on the experience with the CTF3 injector a thermionic high voltage gun with a gridded cathode has been designed together with a sub-harmonic bunching system to achieve these requirements. The grid will allow controlling the current and eventually feedback on the flattop shape. The gun will operate at 140 kV and an emittance of 14 mm mrad can be obtained. The paper describes the design approach and the results of the systematic electromagnetic simulations to optimize the gun. Care was taken during the mechanical design of the gun to obtain a modular design allowing adjusting for different beam currents and cathode sizes.
id oai-inspirehep.net-1363436
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling oai-inspirehep.net-13634362019-09-30T06:29:59Zhttp://cds.cern.ch/record/2025953engDöbert, SteffenChritin, NicolasCadilhon, BaptisteCassany, BrunoGardelle, JacquesPepitone, KevinDesign of a High Average Current Electron Source for the CLIC Drive Beam InjectorAccelerators and Storage RingsThe drive beam injector for CLIC needs to deliver a 4.2 A electron beam for a duration of 140 μs with a repetition rate of 50 Hz. The shot to shot and flat top current stability has to be better than 0.1% to guarantee the beam stability required for CLIC. Based on the experience with the CTF3 injector a thermionic high voltage gun with a gridded cathode has been designed together with a sub-harmonic bunching system to achieve these requirements. The grid will allow controlling the current and eventually feedback on the flattop shape. The gun will operate at 140 kV and an emittance of 14 mm mrad can be obtained. The paper describes the design approach and the results of the systematic electromagnetic simulations to optimize the gun. Care was taken during the mechanical design of the gun to obtain a modular design allowing adjusting for different beam currents and cathode sizes.CERN-ACC-2014-402oai:inspirehep.net:13634362014
spellingShingle Accelerators and Storage Rings
Döbert, Steffen
Chritin, Nicolas
Cadilhon, Baptiste
Cassany, Bruno
Gardelle, Jacques
Pepitone, Kevin
Design of a High Average Current Electron Source for the CLIC Drive Beam Injector
title Design of a High Average Current Electron Source for the CLIC Drive Beam Injector
title_full Design of a High Average Current Electron Source for the CLIC Drive Beam Injector
title_fullStr Design of a High Average Current Electron Source for the CLIC Drive Beam Injector
title_full_unstemmed Design of a High Average Current Electron Source for the CLIC Drive Beam Injector
title_short Design of a High Average Current Electron Source for the CLIC Drive Beam Injector
title_sort design of a high average current electron source for the clic drive beam injector
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2025953
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