SNS Laser Stripping for H- Injection

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The ORNL spallation neutron source (SNS) user facility requires a reliable, intense beams of protons. The technique of H<sup>-</sup> charge exchange injection into a storage ring or synchrotron has the potential to provide the needed beam currents, but it will be limited by intrinsic limitations of carbon and diamond stripping foils. A laser in combination with magnetic stripping has been used to demonstrate a new technique for high intensity proton injection, but several problems need to be solved before a practical system can be realized. Technology developed for use in Free Electron Lasers is being used to address the remaining ... continued below

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V.V. Danilov, Y. Liu, K.B. Beard, V.G. Dudnikov, R.P. Johnson, Michelle D. Shinn May 2009.

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The ORNL spallation neutron source (SNS) user facility requires a reliable, intense beams of protons. The technique of H<sup>-</sup> charge exchange injection into a storage ring or synchrotron has the potential to provide the needed beam currents, but it will be limited by intrinsic limitations of carbon and diamond stripping foils. A laser in combination with magnetic stripping has been used to demonstrate a new technique for high intensity proton injection, but several problems need to be solved before a practical system can be realized. Technology developed for use in Free Electron Lasers is being used to address the remaining challenges to practical implementation of laser controlled H<sup>-</sup> charge exchange injection for the SNS. These technical challenges include (1) operation in vacuum, (2) the control of the UV laser beam to synchronize with the H<sup>-</sup> beam and to shape the proton beam, (3) the control and stabilization of the Fabry-Perot resonator, and (4) protection of the mirrors from radiation.

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  • PAC09, 4-8 May 2009, Vancouver, BC, Canada

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  • Report No.: JLAB-FEL-09-1144
  • Report No.: DOE/ER/40150-4954
  • Grant Number: AC05-84ER40150
  • Grant Number: AC05-00OR22725
  • Office of Scientific & Technical Information Report Number: 1021888
  • Archival Resource Key: ark:/67531/metadc832299

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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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  • May 2009

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 8:40 p.m.

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V.V. Danilov, Y. Liu, K.B. Beard, V.G. Dudnikov, R.P. Johnson, Michelle D. Shinn. SNS Laser Stripping for H- Injection, article, May 2009; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc832299/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.