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Thermal loads on the FTU limiter are routinely measured and energy losses via conduction/convection are inferred. A small fraction of the input power (4 to 8 %) has been measured from temperature increases in the limiter mushrooms. Numerical evaluation and comparison with thermocouples located at different radial positions in the SOL suggest a long energy decay length. The power loads inferred from the estimated decay length in the actual geometry of the limiter and first wall lead to a global energy balance which is close to being satisfactory.

Additional information

Authors: CIOTTI M ET AL., ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Paper presented: 20th EPS Conference on Controlled Fusion and Plasma Physics, Lisboa (PT), July 26-30, 1993
Availability: Available from (1) as Paper EN 37549 ORA
Record Number: 199310877 / Last updated on: 1994-11-29
Original language: en
Available languages: en