  We present a compact atomic clock using cold rubidium atoms based on an
isotropic light cooling, a Ramsey microwave interrogation and an absorption
detection. Its technology readiness level is suitable to industrial transfer.
We use a fibre optical bench, based on a frequency-doubled telecom laser. The
isotropic light cooling technique allows us to cool down the atoms in 100 ms
and works with a cycle time around 200 ms. We carried out measurements in
simulated microgravity and obtained the narrowest fringes ever recorded in
microgravity.
