  Several studies are on-going at CERN in the framework of the Physics Beyond
Collider study group, with main aim of broadening the physics research spectrum
using the available accelerator complex and infrastructure. The possibility to
design a layout that allows fixed-target experiments in the primary vacuum of
the CERN Large Hadron Collider (LHC), without the need of a dedicated
extraction line, is included among these studies. The principle of the layouts
presented in this paper is to deflect beam halo protons on a fixed-target
placed in the LHC primary vacuum, by means of bent crystals (i.e. crystal
channeling). Moreover, interaction products emerging from the target can be
used to perform electromagnetic dipole moments measurements of short-living
baryons. Two possible layouts are reported, together with a thorough evaluation
on their expected performance and impact on LHC operations.
