Charged fusion product and fast ion loss in TFTR

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Several different fusion product and fast ion loss processes have been observed in TFTR using an array of pitch angle, energy and time resolved scintillator detectors located near the vessel wall. For D-D fusion products (3 MeV protons and 1 MeV tritons) the observed loss is generally consistent with expected first-orbit loss for Ip < 1.4 MA, except near the outer midplane where stochastic TF ripple loss dominates when Ip > I MA. However, at higher currents, Ip = 1.4--2.5 MA, an NM induced D-D fusion product loss can be up to 3-4 times larger than the first-orbit loss, particularly ... continued below

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19 p.

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Zweben, S. J.; Darrow, D. S.; Fredrickson, E. D.; Mynick, H. E.; White, R. B.; Biglari, H. et al. March 1, 1993.

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Description

Several different fusion product and fast ion loss processes have been observed in TFTR using an array of pitch angle, energy and time resolved scintillator detectors located near the vessel wall. For D-D fusion products (3 MeV protons and 1 MeV tritons) the observed loss is generally consistent with expected first-orbit loss for Ip < 1.4 MA, except near the outer midplane where stochastic TF ripple loss dominates when Ip > I MA. However, at higher currents, Ip = 1.4--2.5 MA, an NM induced D-D fusion product loss can be up to 3-4 times larger than the first-orbit loss, particularly at high beam powers, P {ge} 25 MW. The MHD induced loss of 100 KeV neutron beam ions and {approximately}0.5 MeV ICRF minority tail tons has also been measured {le} 459 below the outer midplane. be potential implications of these results for D-T alpha particle experiments in TFTR and ITER are described.

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19 p.

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OSTI; NTIS; INIS; GPO Dep.

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  • 14. international conference on plasma physics and controlled nuclear fusion research,Wurzburg (Germany),30 Sep - 7 Oct 1992

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  • Other: DE93011494
  • Report No.: PPPL--2891
  • Report No.: IAEA-CN--56/A-6-3
  • Report No.: CONF-920913--29
  • Grant Number: AC02-76CH03073
  • Office of Scientific & Technical Information Report Number: 10146478
  • Archival Resource Key: ark:/67531/metadc1315079

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  • March 1, 1993

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  • Nov. 3, 2018, 11:47 a.m.

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Zweben, S. J.; Darrow, D. S.; Fredrickson, E. D.; Mynick, H. E.; White, R. B.; Biglari, H. et al. Charged fusion product and fast ion loss in TFTR, article, March 1, 1993; United States. (digital.library.unt.edu/ark:/67531/metadc1315079/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.