Fig. 1. Simulation model for thermal analysis

Fig. 2. Effect of SR heat flux on temperature distribution

Fig. 3. Effect of heat sink depth on temperature distribution

Fig. 4. Effect of heat transfer coefficient of the heat pipe on temperature distribution

Fig. 5. Diagram of the photon absorber using loop heat pipe

Fig. 6. Temperature distribution of the photon absorber calculated by simulation

Fig. 7. Photo of the photon absorbe using loop heat pipe and its test site

Fig. 8. Temperature curve of the photon absorbe using loop heat pipe in heating experiment