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Title: Fusion alpha-particle diagnostics for DT experiments on the joint European torus

JET equipped with ITER-like wall (a beryllium wall and a tungsten divertor) can provide auxiliary heating with power up to 35MW, producing a significant population of α-particles in DT operation. The direct measurements of alphas are very difficult and α-particle studies require a significant development of dedicated diagnostics. JET now has an excellent set of confined and lost fast particle diagnostics for measuring the α-particle source and its evolution in space and time, α-particle energy distribution, and α-particle losses. This paper describes how the above mentioned JET diagnostic systems could be used for α-particle measurements, and what options exist for keeping the essential α-particle diagnostics functioning well in the presence of intense DT neutron flux. Also, α-particle diagnostics for ITER are discussed.
Authors:
; ;  [1] ;  [2] ; ;  [3] ; ;  [4] ;  [5] ;  [6] ; ;  [7] ;  [8] ; ; ;  [9] ; ;  [10] ; ;  [11] more »; « less
  1. Euratom / CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon (United Kingdom)
  2. Associazione Euratom -ENEA sulla Fusione, C.R. Frascati, C.P. 65, Frascati (Italy)
  3. Colorado School of Mines, Golden, CO (United States)
  4. Department of Physics and Astronomy, Uppsala University, BOX 516, Uppsala (Sweden)
  5. Association Euratom -MEdC, National Institute for Laser, Plasma and Radiation Physics (Romania)
  6. Max-Planck-Institut für Plasmaphysik, EURATOM-Association IPP, Garching, D-85748 (Germany)
  7. Association Euratom -MEdC, National Institute for Cryogenics and Isotopic Technology (Romania)
  8. Princeton Plasma Physics Lab, Princeton, NJ (United States)
  9. Euratom/IST Fusion Association, Centro de Fusão Nuclear, 1049-001 Lisboa (Portugal)
  10. CNISM, Dipartimento di Fisica, Universita Milano-Bicocca, Milano (Italy)
  11. CNISM, Dipartimento di Fisica, Universita Milano-Bicocca, Milano, Italy and Associazione Euratom -ENEA sulla Fusione, IFP Milano (Italy)
Publication Date:
OSTI Identifier:
22308303
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1612; Journal Issue: 1; Conference: International conference on fusion reactor diagnostics, Varenna (Italy), 9-13 Sep 2013; Other Information: (c) 2014 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA PARTICLES; AUXILIARY HEATING; BERYLLIUM; DIVERTORS; ENERGY SPECTRA; ITER TOKAMAK; JET TOKAMAK; NEUTRON FLUX; PARTICLE LOSSES; PARTICLE SOURCES; TUNGSTEN