Ablation of the pulmonary veins causes damage to the tissue which may affect the viability of the tissue. The snubber limits relative movement between the table and vibration isolator so that the isolator can more quickly damp movement by the table. The e-vault system provides at least one interface for one or more client systems to upload data to and from an storage system via a network. The linear-speed deriving section determines a linear speed of the image carrying member from times at which the detecting section detects the passage of the mark.