Thanks for the lecture Prof. Barish. One meter long, nine cavities, nyobium. Tons of tech. 35 MV as a target. Cryomodules cool everything. 5*10 to the 31 luminosity target. Squeezing the beam once all are in a row. WOW. Earthquake in Japan slowed production. Two tnnels at CERN. Japan puts all in one tunnel. A central lab, dampners. Three stories high. Soft bending to eliminate radiation. One incoming beam each for electrons and protons. Two detectors. Better resolution at Cern.