Progress toward a microsecond duration, repetitive, intense-ion beam for active spectroscopic measurements on ITER

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The authors describe the design of an intense, pulsed, repetitive, neutral beam based on magnetically insulated diode technology for injection into ITER for spectroscopic measurements of thermalizing alpha particle and thermal helium density profiles, ion temperature, plasma rotation, and low Z impurity concentrations in the confinement region. The beam is being developed to enhance low signal-to-noise ratios expected with conventional steady-state ion beams because of severe beam attenuation and intense bremstrahlung emission. A 5 GW (e.g., 100 keV, 50 kA) one-microsecond-duration beam would increase the signal by 10{sup 3} compared to a conventional 5 MW beam with signal-to-noise ratios comparable ... continued below

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18 p.

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Davis, H.A.; Bartsch, R.R. & Barnes, C.W. June 1, 1996.

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Description

The authors describe the design of an intense, pulsed, repetitive, neutral beam based on magnetically insulated diode technology for injection into ITER for spectroscopic measurements of thermalizing alpha particle and thermal helium density profiles, ion temperature, plasma rotation, and low Z impurity concentrations in the confinement region. The beam is being developed to enhance low signal-to-noise ratios expected with conventional steady-state ion beams because of severe beam attenuation and intense bremstrahlung emission. A 5 GW (e.g., 100 keV, 50 kA) one-microsecond-duration beam would increase the signal by 10{sup 3} compared to a conventional 5 MW beam with signal-to-noise ratios comparable to those from a chopped conventional beam in one second.

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18 p.

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INIS; OSTI as DE96011282

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  • 11. high temperature plasma diagnostic conference, Monterey, CA (United States), 13-17 Jun 1996

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  • Other: DE96011282
  • Report No.: LA-UR--96-1648
  • Report No.: CONF-9606208--11
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 244646
  • Archival Resource Key: ark:/67531/metadc673407

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  • June 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 26, 2016, 3:34 p.m.

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Davis, H.A.; Bartsch, R.R. & Barnes, C.W. Progress toward a microsecond duration, repetitive, intense-ion beam for active spectroscopic measurements on ITER, article, June 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc673407/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.