Plasma and Fusion Research
Volume 17, 2405033 (2022)
Regular Articles
- 1)
- National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
- 2)
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
- 3)
- Université Paris-Saclay, CEA, Département des Accélérateurs, de la Cryogénie et du Magnétisme, Gif-sur-Yvette, 91191, France
Abstract
Thermal conductivity of 9.8 at% Ytterbium-doped Yttrium Aluminum Garnet (Yb:YAG) ceramics has been measured by three systems at Commissariat à l'Énergie Atomique et aux énergies alternatives (CEA Paris-Saclay) and at the National Institute for Fusion Science (NIFS). For accurate measurements, thermal impedances in thermal systems should be negligibly small. However, each system includes some thermal impedance in a heat flow path. This paper describes that thermal conductivity of the 9.8% doped Yb:YAG ceramics and discusses the compensation method for thermal impedance in each system.
Keywords
thermal conductivity, Yb:YAG, cryogenic, steady-state differential method
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