Investigations of the tritium recycling in TFTR using the DT neutron rate

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During deuterim-only neutral-beam-injected discharges, tritium from earlier deuterium-tritium discharges is released from the vessel limiters and walls to cause a deuterium-tritium neutron count rate comparable to the deuterium-deuterium neutron count rate. A measure of the tritium density in the plasma based on neutron rate measurements is defined and used to determine which parameters influence tritium influx to the plasma core. The tritium density is observed to decrease in a sequence of deuterium-only supershots and to depend on the amount of tritium injected in prior DT shots and the amount of tritium present in the limiter. A weak correlation is also ... continued below

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21 p.

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Kruger, S. E.; Callen, J. D.; Budny, R. V.; Chang, Z.; Skinner, C. H. & Strachan, J. D. April 1, 1996.

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Description

During deuterim-only neutral-beam-injected discharges, tritium from earlier deuterium-tritium discharges is released from the vessel limiters and walls to cause a deuterium-tritium neutron count rate comparable to the deuterium-deuterium neutron count rate. A measure of the tritium density in the plasma based on neutron rate measurements is defined and used to determine which parameters influence tritium influx to the plasma core. The tritium density is observed to decrease in a sequence of deuterium-only supershots and to depend on the amount of tritium injected in prior DT shots and the amount of tritium present in the limiter. A weak correlation is also observed with the plasma current, but not with beam power, hydrogen influx, carbon influx, visible bremsstrahlung, lithium pellet injection, blooms, nor disruptions.

Physical Description

21 p.

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INIS; OSTI as DE96008975

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  • Other Information: PBD: [1996]

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  • Other: DE96008975
  • Report No.: PPPL--3157
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/231190 | External Link
  • Office of Scientific & Technical Information Report Number: 231190
  • Archival Resource Key: ark:/67531/metadc669437

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Creation Date

  • April 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Oct. 3, 2017, 1:06 p.m.

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Kruger, S. E.; Callen, J. D.; Budny, R. V.; Chang, Z.; Skinner, C. H. & Strachan, J. D. Investigations of the tritium recycling in TFTR using the DT neutron rate, report, April 1, 1996; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc669437/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.