Design Study of the Extraction System of the 3rd Generation ECR Ion Source

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A design study for the extraction system of the 3rd Generation super conducting ECR ion source at LBNL is presented. The magnetic design of the ion source has a mirror field of 4 T at the injection and 3 T at the extraction side and a radial field of 2.4 T at the plasma chamber wall. Therefore, the ion beam formation takes place in a strong axial magnetic field. Furthermore the axial field drops from 3 T to 0.4 T within the first 30 cm. The influence of the high magnetic field on the ion beam extraction and matching to ... continued below

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12 pages

Creation Information

Leitner, M.A.; Lyneis, C.M.; Taylor, C.E.; Wutte, D. & Xie, Z.Q. October 6, 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 13 times . More information about this article can be viewed below.

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Description

A design study for the extraction system of the 3rd Generation super conducting ECR ion source at LBNL is presented. The magnetic design of the ion source has a mirror field of 4 T at the injection and 3 T at the extraction side and a radial field of 2.4 T at the plasma chamber wall. Therefore, the ion beam formation takes place in a strong axial magnetic field. Furthermore the axial field drops from 3 T to 0.4 T within the first 30 cm. The influence of the high magnetic field on the ion beam extraction and matching to the beam line is investigated. The extraction system is first simulated with the 2D ion trajectory code IGUN with an estimated mean charge state of the extracted ion beam. These results are then compared with the 2D code AXCEL-INP, which can simulate the extraction of ions with different charge states. Finally, the influence of the strong magnetic hexapole field is studied with the three dimensional ion optics code KOBRA. The introduced tool set can be used to optimize the extraction system of the super conducting ECR ion source.

Physical Description

12 pages

Notes

INIS; AIP; OSTI as DE00007355

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  • The Eighth International Conference on Heavy-Ion Accelerator Technology, Chicago IL (US), 10/05/1998--10/09/1998

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  • Report No.: LBNL--42388
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 7355
  • Archival Resource Key: ark:/67531/metadc706898

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  • October 6, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 4, 2016, 12:38 p.m.

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Leitner, M.A.; Lyneis, C.M.; Taylor, C.E.; Wutte, D. & Xie, Z.Q. Design Study of the Extraction System of the 3rd Generation ECR Ion Source, article, October 6, 1998; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc706898/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.