The PLT rotating pumped limiter

S. A. Cohen, R. V. Budny, V. Corso, J. Boychuck, L. Grisham, D. Heifetz, J. Hosea, S. Luyber, P. Loprest, D. Manos, D. Mueller, W. Mycock, D. Post, R. Ritter, J. Timberlake, M. Williams

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A limiter with a specially contoured front face and the ability to rotate during tokamak discharges has been installed in a PLT pump duct. These features have been selected to handle the unique particle removal and heat load requirements of ICRF heating and lower-hybrid current-drive experiments. The limiter has been conditioned and commissioned in an ion-beam test stand by irradiation with 1 MW power, 200 ms duration beams of 40 keV hydrogen ions. Operation in PLT during ohmic discharges has proven the ability of the limiter to reduce localized heating caused by energetic electron bombardment and to remove about 2% of the ions lost to the PLT walls and limiters.

Original languageEnglish (US)
Pages (from-to)430-433
Number of pages4
JournalJournal of Nuclear Materials
Issue numberC
StatePublished - Dec 1984

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • General Materials Science
  • Nuclear Energy and Engineering


  • density-control
  • heat-load
  • pump-limiters


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