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The shielding of the heat flux from plasma is one of the most limiting factors in plasma-facing component (PFC) design. In fact, the performance of a cooled divertor plate system is limited mainly by the heat transfer capability (maximum value of the critical heat flux CHF) and by the capability to sustain thermal stresses, even if the maximum allowable heat flux is determined by the thermal conductivity of the protective material (maximum temperature value on the plasma facing surface). A new concept for cooled thermal shield design has been devised and tested. Analyses and tests demonstrate that the new concept introduces very high improvements in PFC design, in terms of both heat removal capability (very high CHF) and related stress performance. Up to 80 MW/m2 under steady state were successfully applied.

Additional information

Authors: ENEA, ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Report: ENEA RT/ERG/FUS/93/34 EN (1993) 12 pp.
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 199411241 / Last updated on: 1994-11-25
Original language: en
Available languages: en
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