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Abstract

The report is split into five sections. In section I the plasma characteristics are discussed, starting with evolution in time of the plasma parameters of a typical shot. This is then followed by the operating diagrams in both current and density, (and effective plasma charge Zeff and density) showing the range of conditions explored by JET since the start of the experiment. In section II the plasma resistivity is discussed and it is shown that the resistivity is close to neoclassical. In Section III the global energy confinement properties are evaluated, the scaling of the energy confinement time with the plasma parameters is determined, and comparisons are made between the JET data and data from other experiments. In Section IV the local energy confinement properties are studied first by using the temperature and density profiles to determine the transport coefficients and then using a predictive code with model transport coefficients to simulate the measured temperature and density profiles. Finally in section V the electron thermal diffusivity is determined by following the transmission of the heat pulse following the sawtooth relaxation. The resulting electron thermal diffusivity is compared with the transport analysis and simulations of section IV.

Additional information

Authors: CORDEY J G JET JOINT UNDERTAKING, ABINGDON (UK), JET JOINT UNDERTAKING, ABINGDON (UK)
Bibliographic Reference: WRITE TO THE PUBLICATIONS OFFICER, JET JOINT UNDERTAKING, ABINGDON, OXON, OX14 3EA (UK), MENTIONING REPORT JET-R(87)02, 1987
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