First Study of the PIKACHU Project: Development and Evaluation of High-Purity Gd3Ga3Al2O12:Ce Crystals for 160Gd Double Beta Decay Search. - Omori, Takumi; Iida, Takashi; Gando, Azusa; Hosokawa, Keishi; Kamada, Kei; Mizukoshi, Keita; Shoji, Yasuhiro; Yoshino, Masao; Fushimi, Ken-Ichi; Suzuki, Hisanori; Takahashi, Kotaro (Progress of Theoretical & Experimental Physics: PTEP, 2024)