The present invention is to provide a TiO2\u2014SiO2 glass having suitable thermal expansion properties as an optical member of an exposure tool for EUVL. The tub 32 has a removable side panel 42 incorporated into at least one sidewall wherein a latching mechanism 44 is used to attach the removable side panel to the tub 32. The apparatus also includes a second matching circuit connected in a second signal path between the node and a second amplifier. The first end is attached to the back plate such that when the back plate is held in a vertical plane the tubular tool support assembly extends at a downward angle away from the front face surface of the back plate. When the primary application server itself becomes unavailable, one or more of the backup application servers may be promoted to the role of primary application server. The invention provides methods and devices for suturing by pushing two ends of a suture through tissue from a proximal side of the tissue and fastening the two ends together on a distal side of the tissue through one operation of a trigger.