Lithium Pellet Injector Development for NSTX

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Description

A pellet injector suitable for the injection of lithium and other low-Z pellets of varying mass into plasmas at precise velocities from 5 to 500 m/s is being developed for use on NSTX (National Spherical Torus Experiment). The ability to inject low-Z impurities will significantly expand NSTX experimental capability for a broad range of diagnostic and operational applications. The architecture employs a pellet-carrying cartridge propelled through a guide tube by deuterium gas. Abrupt deceleration of the cartridge at the end of the guide tube results in the pellet continuing along its intended path, thereby giving controlled reproducible velocities for a ... continued below

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4.6 MB pages

Creation Information

Gettelfinger, G.; Dong, J.; Gernhardt, R.; Kugel, H.; Sichta, P. & Timberlake, J. December 4, 2003.

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Description

A pellet injector suitable for the injection of lithium and other low-Z pellets of varying mass into plasmas at precise velocities from 5 to 500 m/s is being developed for use on NSTX (National Spherical Torus Experiment). The ability to inject low-Z impurities will significantly expand NSTX experimental capability for a broad range of diagnostic and operational applications. The architecture employs a pellet-carrying cartridge propelled through a guide tube by deuterium gas. Abrupt deceleration of the cartridge at the end of the guide tube results in the pellet continuing along its intended path, thereby giving controlled reproducible velocities for a variety of pellets materials and a reduced gas load to the torus. The planned injector assembly has four hundred guide tubes contained in a rotating magazine with eight tubes provided for injection into plasmas. A PC-based control system is being developed as well and will be described elsewhere in these Proceedings. The development path and mechanical performance of the injector will be described.

Physical Description

4.6 MB pages

Notes

INIS; OSTI as DE00820198

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  • Other Information: PBD: 4 Dec 2003

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  • Report No.: PPPL-3902
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/820198 | External Link
  • Office of Scientific & Technical Information Report Number: 820198
  • Archival Resource Key: ark:/67531/metadc734619

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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 4, 2003

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • April 15, 2016, 9:27 p.m.

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Gettelfinger, G.; Dong, J.; Gernhardt, R.; Kugel, H.; Sichta, P. & Timberlake, J. Lithium Pellet Injector Development for NSTX, report, December 4, 2003; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc734619/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.