Initial results from the scoop limiter experiment in PDX

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A particle scoop limiter with a graphite face backed by a 50 liter volume for collecting particles was used in PDX. Experiments were performed to test its particle control and power handling capabilities with up to 5 MW of D/sup 0/ power injected into D/sup +/ plasmas. Line average plasma densities up to 8 x 10/sup 13/ cm/sup -3/ and currents up to 450 kA were obtained. Plasma densities in the scoop channels greater than 2 x 10/sup 13/ cm/sup -3/ and neutral densities in the scoop volume greater than 5 x 10/sup 14/ cm/sup -3/ were observed. There is ... continued below

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Pages: 32

Creation Information

Budny, R.; Bell, M.; Bol, K.; Boyd, D.; Buchenauer, D.; Cavallo, A. et al. December 1, 1983.

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Description

A particle scoop limiter with a graphite face backed by a 50 liter volume for collecting particles was used in PDX. Experiments were performed to test its particle control and power handling capabilities with up to 5 MW of D/sup 0/ power injected into D/sup +/ plasmas. Line average plasma densities up to 8 x 10/sup 13/ cm/sup -3/ and currents up to 450 kA were obtained. Plasma densities in the scoop channels greater than 2 x 10/sup 13/ cm/sup -3/ and neutral densities in the scoop volume greater than 5 x 10/sup 14/ cm/sup -3/ were observed. There is evidence that recycling may have occurred in the scoop channels for several discharges with large line-averaged plasma density. At beam powers up to 2.5 MW, energy confinement times above 40 ms were deduced from magnetics measurements and from transport analysis. Pressures in the vacuum vessel were in the 10/sup -5/ Torr range, and recycling source neutral densities in the central plasma were low.

Physical Description

Pages: 32

Notes

NTIS, PC A03/MF A01.

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  • Other: DE84006285
  • Report No.: PPPL-2061
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/5420173 | External Link
  • Office of Scientific & Technical Information Report Number: 5420173
  • Archival Resource Key: ark:/67531/metadc1065175

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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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Creation Date

  • December 1, 1983

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • May 11, 2018, 4:57 p.m.

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Budny, R.; Bell, M.; Bol, K.; Boyd, D.; Buchenauer, D.; Cavallo, A. et al. Initial results from the scoop limiter experiment in PDX, report, December 1, 1983; New Jersey. (digital.library.unt.edu/ark:/67531/metadc1065175/: accessed August 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.