Power handling of the bulk tungsten divertor row at JET: First measurements and comparison to the GTM thermal model.

Highlights: [•] Experiments related to the design of bulk tungsten divertor tiles for JET were performed along with extensive modelling. [•] Temperatures measured in the torus are in good agreement with the model. Some characteristic times show stronger deviations. [•] Those deviations have no incidence on the highest temperatures reached. [•] The experimental behaviour of the bulk W tiles is close to design values in a wide range of operational parameters. [•] The conclusions apply up to deposited energy densities around 30MJ/m2. [Copyright &y& Elsevier]