Effect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotron

Recently, a filament driven multi-cusp negative ion source has been developed for proton cyclotrons in medical applications. In this study, numerical modeling of the filament arc-discharge source plasma has been done with kinetic modeling of electrons in the ion source plasmas by the multi-cusp arc-...

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Detalles Bibliográficos
Autores principales: Onai, M, Etoh, H, Aoki, Y, Shibata, T, Mattei, S, Fujita, S, Hatayama, A, Lettry, J
Lenguaje:eng
Publicado: 2016
Materias:
Other
Acceso en línea:https://dx.doi.org/10.1063/1.4934846
http://cds.cern.ch/record/2269079
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author Onai, M
Etoh, H
Aoki, Y
Shibata, T
Mattei, S
Fujita, S
Hatayama, A
Lettry, J
author_facet Onai, M
Etoh, H
Aoki, Y
Shibata, T
Mattei, S
Fujita, S
Hatayama, A
Lettry, J
author_sort Onai, M
collection CERN
description Recently, a filament driven multi-cusp negative ion source has been developed for proton cyclotrons in medical applications. In this study, numerical modeling of the filament arc-discharge source plasma has been done with kinetic modeling of electrons in the ion source plasmas by the multi-cusp arc-discharge code and zero dimensional rate equations for hydrogen molecules and negative ions. In this paper, main focus is placed on the effects of the arc-discharge power on the electron energy distribution function and the resultant H− production. The modelling results reasonably explains the dependence of the H− extraction current on the arc-discharge power in the experiments.
id oai-inspirehep.net-1605048
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling oai-inspirehep.net-16050482019-09-30T06:29:59Zdoi:10.1063/1.4934846http://cds.cern.ch/record/2269079engOnai, MEtoh, HAoki, YShibata, TMattei, SFujita, SHatayama, ALettry, JEffect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotronOtherRecently, a filament driven multi-cusp negative ion source has been developed for proton cyclotrons in medical applications. In this study, numerical modeling of the filament arc-discharge source plasma has been done with kinetic modeling of electrons in the ion source plasmas by the multi-cusp arc-discharge code and zero dimensional rate equations for hydrogen molecules and negative ions. In this paper, main focus is placed on the effects of the arc-discharge power on the electron energy distribution function and the resultant H− production. The modelling results reasonably explains the dependence of the H− extraction current on the arc-discharge power in the experiments.oai:inspirehep.net:16050482016
spellingShingle Other
Onai, M
Etoh, H
Aoki, Y
Shibata, T
Mattei, S
Fujita, S
Hatayama, A
Lettry, J
Effect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotron
title Effect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotron
title_full Effect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotron
title_fullStr Effect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotron
title_full_unstemmed Effect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotron
title_short Effect of high energy electrons on H− production and destruction in a high current DC negative ion source for cyclotron
title_sort effect of high energy electrons on h− production and destruction in a high current dc negative ion source for cyclotron
topic Other
url https://dx.doi.org/10.1063/1.4934846
http://cds.cern.ch/record/2269079
work_keys_str_mv AT onaim effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron
AT etohh effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron
AT aokiy effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron
AT shibatat effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron
AT matteis effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron
AT fujitas effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron
AT hatayamaa effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron
AT lettryj effectofhighenergyelectronsonhproductionanddestructioninahighcurrentdcnegativeionsourceforcyclotron

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