Einzel lens chopper and behavior of the chopped beam in the KEK digital accelerator

The KEK digital accelerator (KEK-DA), which is a small-scale rapid-cycle induction synchrotron (IS), has commenced operation. A permanent magnet x-band electron cyclotron resonance ion source serves as the KEK-DA ion source and delivers various ions. A new Einzel lens beam chopper has been developed...

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Main Authors: K. W. Leo, T. Adachi, T. Arai, K. Takayama
Format: Article
Language:English
Published: American Physical Society 2013-04-01
Series:Physical Review Special Topics. Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevSTAB.16.043502
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spelling doaj-85af3fe388c045bdb2c5d1efca442e262020-11-25T01:35:45ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022013-04-0116404350210.1103/PhysRevSTAB.16.043502Einzel lens chopper and behavior of the chopped beam in the KEK digital acceleratorK. W. LeoT. AdachiT. AraiK. TakayamaThe KEK digital accelerator (KEK-DA), which is a small-scale rapid-cycle induction synchrotron (IS), has commenced operation. A permanent magnet x-band electron cyclotron resonance ion source serves as the KEK-DA ion source and delivers various ions. A new Einzel lens beam chopper has been developed to provide the necessary pulse width of a few microseconds. The chopper is implemented by applying a rectangular pulse voltage generated by a solid-state Marx generator to the middle electrode of the Einzel lens. Momentum modulation at the bunch head and tail resulting from chopping in longitudinal direction has been observed. This intrinsic property of the chopped pulse has been clearly observed in a long drift (a free run in the circular ring) in KEK-DA.http://doi.org/10.1103/PhysRevSTAB.16.043502
collection DOAJ
language English
format Article
sources DOAJ
author K. W. Leo
T. Adachi
T. Arai
K. Takayama
spellingShingle K. W. Leo
T. Adachi
T. Arai
K. Takayama
Einzel lens chopper and behavior of the chopped beam in the KEK digital accelerator
Physical Review Special Topics. Accelerators and Beams
author_facet K. W. Leo
T. Adachi
T. Arai
K. Takayama
author_sort K. W. Leo
title Einzel lens chopper and behavior of the chopped beam in the KEK digital accelerator
title_short Einzel lens chopper and behavior of the chopped beam in the KEK digital accelerator
title_full Einzel lens chopper and behavior of the chopped beam in the KEK digital accelerator
title_fullStr Einzel lens chopper and behavior of the chopped beam in the KEK digital accelerator
title_full_unstemmed Einzel lens chopper and behavior of the chopped beam in the KEK digital accelerator
title_sort einzel lens chopper and behavior of the chopped beam in the kek digital accelerator
publisher American Physical Society
series Physical Review Special Topics. Accelerators and Beams
issn 1098-4402
publishDate 2013-04-01
description The KEK digital accelerator (KEK-DA), which is a small-scale rapid-cycle induction synchrotron (IS), has commenced operation. A permanent magnet x-band electron cyclotron resonance ion source serves as the KEK-DA ion source and delivers various ions. A new Einzel lens beam chopper has been developed to provide the necessary pulse width of a few microseconds. The chopper is implemented by applying a rectangular pulse voltage generated by a solid-state Marx generator to the middle electrode of the Einzel lens. Momentum modulation at the bunch head and tail resulting from chopping in longitudinal direction has been observed. This intrinsic property of the chopped pulse has been clearly observed in a long drift (a free run in the circular ring) in KEK-DA.
url http://doi.org/10.1103/PhysRevSTAB.16.043502
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