Fabrication of large diameter alumino-silicate K{sup +} sources

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Description

Alumino-silicate K{sup +} sources have been used in HIF experiments for many years. For example the Neutralized Transport Expt. (NTX) and the High Current Transport Expt. (HCX) are now using this type of ion source with diameters of 2.54 cm and 10 cm respectively. These sources have demonstrated ion currents of 80 mA and 700 mA, for typical HIF pulse lengths of 5-10 {micro}s. The corresponding current density is {approx} 10-15 mA/cm{sup 2}, but much higher current density has been observed using smaller size sources. Recently we have improved our fabrication techniques and, therefore, are able to reliably produce large ... continued below

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26 pages

Creation Information

Baca, D.; Chacon-Golcher, E.; Kwan, J.W. & Wu, J.K. February 20, 2003.

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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 11 times . More information about this article can be viewed below.

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Description

Alumino-silicate K{sup +} sources have been used in HIF experiments for many years. For example the Neutralized Transport Expt. (NTX) and the High Current Transport Expt. (HCX) are now using this type of ion source with diameters of 2.54 cm and 10 cm respectively. These sources have demonstrated ion currents of 80 mA and 700 mA, for typical HIF pulse lengths of 5-10 {micro}s. The corresponding current density is {approx} 10-15 mA/cm{sup 2}, but much higher current density has been observed using smaller size sources. Recently we have improved our fabrication techniques and, therefore, are able to reliably produce large diameter ion sources with high quality emitter surface without defects. This note provides a detailed description of the procedures employed in the fabrication process. The variables in the processing steps affecting surface quality, such as substrate porosity, powder size distribution, coating technique on large area concave surfaces, drying, and heat firing temperature have been investigated.

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26 pages

Notes

INIS; OSTI as DE00816775

Source

  • Particle Accelerator Conference, PAC03, Portland, OR (US), 05/12/2003--05/16/2003

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  • Report No.: LBNL--51801
  • Report No.: HIFAN-1217
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 816775
  • Archival Resource Key: ark:/67531/metadc737769

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  • February 20, 2003

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • April 4, 2016, 12:56 p.m.

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Baca, D.; Chacon-Golcher, E.; Kwan, J.W. & Wu, J.K. Fabrication of large diameter alumino-silicate K{sup +} sources, article, February 20, 2003; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc737769/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.