  The MEG II experiment, located at the Paul Scherrer Institut (PSI) in
Switzerland, is the successor to the MEG experiment, which completed data
taking in 2013. MEG II started fully operational data taking in 2021, with the
goal of improving the sensitivity of the mu+ -> e+ gamma decay down to 6e-14
almost an order of magnitude better than the current limit. In this paper, we
describe the operation and performance of the experiment and give a new
estimate of its sensitivity versus data acquisition time.
