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The closed ASDEX Upgrade Divertor II 'LYRA', is capable of handling heating powers of up to 20MW or P/R of 12 MW/m, owing to a reduction of the maximum heat flux to the target plates by more than a factor of 2 compared with the open divertor I. This reduction is caused by high radiative losses from carbon and hydrogen inside the divertor region and is in agreement with B2-EIRENE modelling predictions. At medium densities in the H mode, the type I ELM behaviour shows no dependence on the heating method. ASDEX Upgrade-JET dimensionless identity experiments showed compatibility of the L-H transition with core physics constraints, while in the H mode confinement, consistencies with the invariance principle were established.

Additional information

Bibliographic Reference: Article: Nuclear Fusion, 30 (1999)1, 1321-1335
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-7255-6
Record Number: 199911511 / Last updated on: 1999-10-29
Original language: en
Available languages: en
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