Speaker
Dr
gang zhou
(Technical Institute of Physics and Chemistry, CAS)
Description
Numerical investigation was performed on the temperature control of NIF cryogenic target in order to get a temperature uniformity of 0.1mK on the surface of the target capsule. Heat transfer process was discussed to find out major factors in the temperature control, tamping gas heat transfer and natural convection of the tamping gas was calculated. Spherically symmetric temperature field is required due to energy released from the tritium decay within the capsule, auxiliary heating is set on the hohlraum to compensate the higher heat loss caused by the lower tamping gas thermal resistance on the mid plane. Natural convection effect of the tamping gas is reduced by separating the tamping gas with plastic films and independent temperature control of the cooling arms. This research may provide theoretical foundation and reference for temperature control on the cryogenic target.
Author
Ms
Yu Sun
(Technical Institute of Physics and Chemistry, CAS)
Co-author
Dr
gang zhou
(Technical Institute of Physics and Chemistry, CAS)
