  The Upgrade II of the LHCb experiment is proposed to be installed during the
CERN Long Shutdown 4, aiming to operate LHCb at 1.5x$10^{34}cm^{-2}s^{-1}$ that
is 75 times its design luminosity and reaching an integrated luminosity of
about $400 fb^{-1}$ by the end of the High Luminosity LHC era. This increase of
the data sample at LHCb is an unprecedented opportunity for heavy flavour
physics measurements. A first upgrade of LHCb, completed in 2022, has already
implemented important changes of the LHCb detector and, for the Upgrade II,
further detector improvements are being considered. Such a luminosity increase
will have an impact not only on the LHCb detector but also on the LHC magnets,
cryogenics and electronic equipment placed in the IR8. In fact, the LHCb
experiment was conceived to work at a much lower luminosity than ATLAS and CMS,
implying minor requirements for protection of the LHC elements from the
collision debris and therefore a different layout around the interaction point.
The luminosity target proposed for the Upgrade II requires to review the layout
of the entire insertion region in order to ensure safe operation of the LHC
magnets and to mitigate the risk of failure of the electronic devices. The
objective of this paper is to provide an overview of the implications of the
Upgrade II of LHCb in the experimental cavern and in the tunnel with a focus on
the LHCb detector, electronic devices and accelerator magnets.
