The Underground Panoramas of SLAC
The tunneling breakthrough into the Far Experimental Hall (FEH) of the Linac Coherent Light Source (LCLS) on January 14th was the culmination of months of planning and excavation work. Having begun nearly a year ago, the FEH cavern is nearly complete, with only the pouring of the concrete slab floor remaining. Once the floor is poured, construction of the experimental hutches can begin.
The cavern, which measures 50 feet wide, 35 feet tall, and 230 feet long, was excavated in sectioned layers, starting from the top. Over the course of FEH excavation, as each bench was removed, tunneling subcontractor Tolga Togan of Affholder Incorporated documented the process with his camera to create this series of panoramas of the cavern and the road header at work.
óBrad Plummer, SLAC Today, January 30, 2008