PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Neutrino. NU-instrumentation
L. Marti Magro* and  On behalf of the Super-Kamiokande Collaboration
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Super-Kamiokande (SK) will be upgraded, to become SuperK-Gd, in order to be able to detect thermal neutrons. This will be achieved by dissolving 0.2$\%$ of gadolinium (Gd) sulfate in the otherwise ultra-pure SK water. Gd has the largest cross-section for thermal neutron capture and emits a gamma cascade of about 8 MeV. This cascade is detected with much higher efficiency than the capture on protons which produces a single gamma of 2.2 MeV.

EGADS, a 200-ton water Cherenkov detector, was constructed using the same materials as SK and was the test ground for the future SuperK-Gd upgrade. Thanks to the extensive studies at EGADS the SuperK-Gd project was approved in June 2015. In this talk, we will report about the ongoing studies for SuperK-Gd and the plans for the refurbishment of SK.
DOI: https://doi.org/10.22323/1.301.1043
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