Dr. Luka Snoj: Measuring the power of fusion reactors
Povzetek:
Measuring the power of fusion reactors
Dr. Luka Snoj, Institut Jožef Stefan in Fakulteta za matematiko in fiziko, Univerza v Ljubljani, Slovenija ter Culham Centre for Fusion Energy, UK
The power output of fusion experiments and fusion reactor-like devices is measured in terms of the neutron emission rates which relate directly to the fusion yield rate. The largest fusion power produced in magnetically confined experiments so far was at the Joint European Torus (JET) in 1997, when a peak value of 16 MW was achieved. Determination of such parameters requires a set of absolutely calibrated neutron detectors. After the 2010-11 replacement of the JET plasma-facing carbon wall with ITER-like (Be/W/C) wall, a detailed calibration is carried out. It is led by a scientific programme, which seeks to better understand the limitations of the calibration, to optimise the measurements and other provisions, to provide corrections for perturbing factors and to ensure personnel safety and safe working conditions. Much of this work is based on an extensive programme of Monte-Carlo neutron transport calculations. The JET scientific programme to make the new in-situ power calibration measurements on JET in April 2013 and its early results are presented.
