  A new geometry of optical lattice is proposed, namely a lattice made of a 1D
stack of ring traps. It is obtained though the interference pattern of two
counterpropagating beams: one of the beam is a standard gaussian beam, while
the other one is a hollow beam obtained through a setup with two conical
lenses. The resulting lattice is shown to have a high filling rate and a good
confinement, so that it could be loaded directly from a MOT with applications
in the domain of quantum computing, or with a Bose-Einstein condensate, which
would have in this case a 1D ring geometry.
