In the laser fusion reactor chamber, the first wall is subjected to the pulses of X-rays, charged particles and neutrons. For protecting the chamber wall from these fusion burning products, various liquid wall concepts in which the first wall is covered with liquid metal and dry wall concepts have been considered. In this study, the material of the first wall is Pb (liquid wall design) and W (dry wall design). To estimate the temperature profile of wall and ablation depths, we have carried out the simulation which includes the energy deposition of the X-rays, alpha particles and the charged particles, thermal conduction of the first wall material, and the energy absorption of charged particles by ablated metal vapor (plasmas).
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