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  • 1995-1999  (3)
  • 1997  (3)
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  • 1995-1999  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Neutron spectrometry for plasma rotation : Proceedings of the eleventh topical conference on high temperature plasma diagnostics (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 561-564 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The principles of neutron spectrometry for determination of the toroidal rotation velocity (Vt) of the plasma in tokamaks are discussed. Comparison is made with photon spectroscopy which shows that neutron spectroscopy can be used as a rotation diagnostic and that its applicability depends on the availability of high neutron fluxes and the development of methods to measure the neutron energy with very high precision. It is found that neutron spectroscopy could be a feasible rotation diagnostic for burning fusion plasmas to be produced in the next generation tokamaks such as ITER. It is proposed that Vt should be derived from the difference spectrum obtained from the simultaneous measurement of neutrons emitted tangentially in two opposite directions. The problems connected with the calibration and stability requirements on the neutron spectrometer system for Vt measurements are illustrated and possible technical solutions discussed. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147654
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Feasibility of neutron spectrometry diagnostic for the fuel ion density in DT tokamak plasmas : Proceedings of the eleventh topical conference on high temperature plasma diagnostics (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 581-584 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The neutron wall emission (WE) background is a crucial element of neutron spectrometry as a fuel density diagnostic for burning deuterium-tritium fusion plasmas in tokamaks. WE spectra have been studied based on MCNP neutron transport calculations applied to the conditions of the ITER vessel according to the preliminary EDA design taking into account the multiple nuclide composition of the plasma facing wall multilayered structure. The results of calculated signal and background intensities suggest that neutron spectrometry is a feasible density diagnostic on ITER for burning plasmas for aim set at the 10% accuracy level (random and systematic). © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147658
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Energy spectrum of thermonuclear neutrons : Proceedings of the eleventh topical conference on high temperature plasma diagnostics (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 585-588 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The neutron energy spectrum from d+t and d+d reactions in a thermonuclear fusion plasma is investigated with the help of a combination of analytical and numerical (Monte Carlo) methods. The energy moments of the neutron spectrum are analytically determined as a function of ion temperature (Ti) and the spectral shape is numerically determined over an intensity span of about 6 orders magnitude. The results are presented in the form of tables and interpolation formulas valid in the range 0〈Ti〈100 keV for use in the advanced diagnostic interpretation of potential high accuracy neutron spectrometry measurements on burning tokamak plasmas. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147659
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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