Sunflower - In-beam gamma-ray spectroscopy at the RIBF

We will propose an experiment to investigate proton shell evolution towards 78Ni by means of in-beam gamma-ray spectroscopy with MINOS at RIBF. The goal of the experiment is to characterize a proton f7/2 hole states in the Cu isotopes populated by one-proton knockout reaction: (p,2p). This will allow us to understand a migration of shell structure induced by the tensor part of the nucleon-nucleon interaction. In the workshop, a physics motivation and feasibility for MINOS@RIBF campaign will be discussed.