Performance of SK-Gd's Upgraded Real-time Supernova Monitoring System - Kashiwagi, Y.; Abe, K.; Bronner, C.; Hayato, Y.; Hiraide, K.; Hosokawa, K.; Ieki, K.; Ikeda, M.; Kameda, J.; Kanemura, Y.; Kaneshima, R.; Kataoka, Y.; et al. (2024)