We aim to derive accurate, multi-epoch radial velocities and atmospheric parameters(Teff, log g and [M/H]) of a largesample of Red Clump stars. We acquired data of the target stars at high signal-to-noise(S/N) and medium resolution with the Asiago B&C spectrograph. Radial velocitieswere obtained by applying cross-correlation against observed IAU standard stars andatmospheric parameters via χ2 fit to a synthetic spectrallibrary. Extensive tests were carried out with the multi-epoch observations of theprogramme stars and re-observations of the Red Clump stars that are taken from differentcatalogues in the literature. A total of 305 Red Clump stars (60 of them with a secondepoch observation) were observed, and presented in an output catalogue that containsaccurate radial velocities(σ(RV) = 2.6 km s-1), atmospheric parameters(σ(Teff) = 68 K,σ(log g) = 0.38 dex and σ([M/H]) =0.17 dex), distances derived from spectrophotometry, space velocities (U,V,W) withadditional astrometric and photometric data taken from literature. We aim to use our finalcatalogue to study the substructure and kinematics of the Galaxy.