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Numerical Simulations of Removing Anticonvection Baffles Inside a Laser Mégajoule Cryotarget

Géraldine Moll, Michel Martin, Rémy Collier

Fusion Science and Technology / Volume 59 / Number 1 / Pages 182-189

January 2011

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We have determined the thermal criterion for the Laser Mégajoule cryogenic target that leads to a uniform layer of deuterium-tritium as specified for ignition. Thermal models were created, and computational fluid dynamics software was used to calculate this criterion in a spherical geometry as a function of capsule thermal conductivity. According to the values obtained, we have studied the possibility of removing anticonvection baffles in the cryogenic target. Results are presented in this paper and indicate that anticonvection baffles can be removed only if the gas density inside the cryogenic target is reduced and/or if the hydrogen content is reduced.

 
 
 
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