Cryogenic Indirect Drive Target A Thermal Study

Ignition targets for LMJ experiments require a very constant DT ice layer thickness (1%) in order to improve the implosion process. This implies that the temperature must be uniform over the shell containing the DT layer (to some tens of microkelvin).In this paper, thermal studies, two or three dimensional, accounting for free convection or not, carried out in order to meet this requirement, are reviewed and the corresponding simulation results are discussed.