Generation of high purity cw proton beams from microwave driven sources

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We describe a technique we have developed to significantly increase the proton fraction extracted from high pressure (mTorr) electron cyclotron resonance (ECR) sources of the type developed by Chalk River Laboratories (CRL). Specifically, this proton enhancement is achieved by the addition of environmentally benign additives (H{sub 2}O being the most effective) to the plasma, in molecular concentrations of the order of 1%. Typically, operating under non- resonant source conditions, this technique will enhance the proton fraction from about 75% to greater than 95% for a power input of 700W at 2.45 GHz. Similar results are achieved for deuteron beams. We ... continued below

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4 p.

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Spence, D. & Lykke, K.R. July 1, 1995.

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Description

We describe a technique we have developed to significantly increase the proton fraction extracted from high pressure (mTorr) electron cyclotron resonance (ECR) sources of the type developed by Chalk River Laboratories (CRL). Specifically, this proton enhancement is achieved by the addition of environmentally benign additives (H{sub 2}O being the most effective) to the plasma, in molecular concentrations of the order of 1%. Typically, operating under non- resonant source conditions, this technique will enhance the proton fraction from about 75% to greater than 95% for a power input of 700W at 2.45 GHz. Similar results are achieved for deuteron beams. We believe this technique is capable of similar results in arc-discharge (bucket) sources, Penning sources and any other gas discharge sources, under suitable conditions.

Physical Description

4 p.

Notes

INIS; OSTI as DE95013769

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  • 16. Institute of Electrical and Electronic Engineers (IEEE) particle accelerator conference, Dallas, TX (United States), 1-5 May 1995

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  • Other: DE95013769
  • Report No.: ANL/TD/CP--85060
  • Report No.: CONF-950512--244
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 82351
  • Archival Resource Key: ark:/67531/metadc786160

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 1, 1995

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  • Dec. 3, 2015, 9:30 a.m.

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  • Dec. 17, 2015, 1:08 p.m.

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Spence, D. & Lykke, K.R. Generation of high purity cw proton beams from microwave driven sources, article, July 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc786160/: accessed August 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.