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Oct 13 – 18, 2014
Hotel Park Inn Pribaltiyskaya
Europe/Moscow timezone

Physics Design and Analysis Code SPECTRE for Tokamak Based Fusion Reactors

Oct 17, 2014, 8:30 AM
Green 8-9 (Hotel Park Inn Pribaltiyskaya)

Green 8-9

Hotel Park Inn Pribaltiyskaya

Saint Petersburg, Russian Federation
Poster Poster 7


Mr Vinay Menon (Institute for plasma research)


SPECTRE is a 0-D physics code developed for Indian DEMO reactors. The code gives a set of operating points based on the ignition criteria and the radial build up is estimated by solving iteratively for the plasma temperaturefor a given fusion power and fusion gain (Q). The ratio of plasma density to Greenwald density is chosen so that the reactor operateswithin density limit while the beta limit is checked after obtaining the consistent plasma parameters. The code takes pre-defined plasma shape parameters,aspect ratio, profile factors of temperature and density, edge safety factor. Engineering constraints like maximum allowable field at the TF inner leg, blanket and shield thickness are also given depending upon the technological requirements. The energy confinement for this study is based on IPB98(y,2) scaling law.The helium fraction is estimated by balancing the net power coupled to plasma with transport losses by assuming the ratio of helium particle confinement time to global energy confinement time. The ratio of the ion temperature to electron temperature is estimated and given as an input to the code. The power balance includes losses like synchrotron,Bremsstrahlung and impurity line radiation.The possible impurities depending upon the choice of plasma facing components are considered for estimating the line radiation.Line radiation from Tungsten and Beryllium are considered in the code from the impurity fractions. The plasma temperature is estimated by solving the power balance equation iteratively. Derived plasma parameters like L- H power threshold, bootstrap fraction, neutron wall load, loop voltage and Divertor heat load are estimated.
Paper Number FIP/P7-19
Country or International Organisation India

Primary author

Mr Vinay Menon (Institute for plasma research)


Mr Aashoo Sharma (Institute for Plasma Research) Prof. Amita Das (Institute for plasma research) Mr Chandan Danani (Institute for Plasma Research) Prof. Dhiraj Bora (Institute for plasma research) Prof. P K Kaw (Institute for plasma research) Mr Rajendra Kumar (Institute for Plasma Research) Mr Ravi Pragash (Institute for Plasma Research) Dr Samir Khirwadkar (Institute for Plasma Research) Dr Shishir Deshpande (Institute for Plasma Research) Dr Srinivasan Radhakrishnan (Institute for plasma research) Dr Subrata Pradhan (Institute for Plasma Research) Mr Upendra Prasad (Institute for Plasma Research)

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