Development of gamma-ray diagnostics for ITER (Articolo in rivista)

Type
Label
  • Development of gamma-ray diagnostics for ITER (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/51/8/083010 (literal)
Alternative label
  • Chugunov, IN [ 1 ] ; Shevelev, AE [ 1 ] ; Gin, DB [ 1 ] ; Kiptily, VG [ 2 ] ; Gorini, G [ 3 ] ; Nocente, M [ 3 ] ; Tardocchi, M [ 3 ] ; Doinikov, DN [ 1 ] ; Naidenov, VO [ 1 ] ; Khilkevitch, EM [ 1 ] (2011)
    Development of gamma-ray diagnostics for ITER
    in Nuclear fusion
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Chugunov, IN [ 1 ] ; Shevelev, AE [ 1 ] ; Gin, DB [ 1 ] ; Kiptily, VG [ 2 ] ; Gorini, G [ 3 ] ; Nocente, M [ 3 ] ; Tardocchi, M [ 3 ] ; Doinikov, DN [ 1 ] ; Naidenov, VO [ 1 ] ; Khilkevitch, EM [ 1 ] (literal)
Pagina inizio
  • 083010 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0029-5515/51/8/083010/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 51 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg 194021, Russia [ 2 ] EURATOM CCFE Fus Assoc, Abingdon OX14 3DB, Oxon, England [ 3 ] Assoc EURATOM ENEA Fus, Ifp-Cnr Milano, Italy (literal)
Titolo
  • Development of gamma-ray diagnostics for ITER (literal)
Abstract
  • Gamma-ray spectrometry is a diagnostic tool for fast ions in large tokamak plasmas. The information provided allows us to identify and simultaneously distinguish the presence of fast alpha-particles and other ions (H, D, T, (3)He) to obtain information on their energy distribution and relative densities, in addition to performing a tomographic radial profile reconstruction of the gamma-emission sources. The lack of vertical diagnostic ports in ITER makes the implementation of tomographic neutron and gamma-ray systems more complicated. The use of a vertical divertor port for the implementation of a vertical viewpoint is currently suggested. The strong magnetic field (similar to 2 T) found there makes it hard to use conventional multi-dynode photomultipliers as light detectors. Instead, the use of micro-channel plate photomultipliers is suggested here. Investigations of the magnetic field impact on the performance of the gamma-spectrometer with a micro-channel photomultiplier are carried out. A high-speed pulse height analysis technique, which allows us to trace gain changes in the photomultiplier tube, is developed at the Ioffe Institute. The tests demonstrate the feasibility of gamma-spectrometric measurements in the divertor port provided that micro-channel photomultiplier detectors and the developed high-speed technique are used. (literal)
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