FPN01-85

NIF Project Making Progress

December 12, 2001

One year after a major "rebaselining," (FPN00-47), the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) is on track to begin commissioning ("First Light") in Fiscal Year 2004. The 192-beam, $2.2 billion laser will be brought up to full capability in stages, with full operation scheduled by September 2008. However, beneficial "user experiments" will begin in FY2005. The eventual aim of the facility is to "ignite" a small pellet of fusion fuel, releasing ten or more times more energy than the laser delivers to the pellet to ignite it. The facility will be used for basic science and weapons research and is considered to be an essential feasibility test for eventual commercial power plants based on inertial confinement fusion.

On September 28, the conventional facilities (500,000 square feet) part of the project was completed on time and on budget ($196 million). Even before the building was complete, NIF project managers were installing laser-related equipment. These included the target chamber, space frame, utility spine, spatial filter vessels and more. On September 26, for example, an integrated test was conducted, ahead of schedule, of the first amplifier slab "line-replaceable unit" (LRU). Inserting the LRU into the beamline forced the team to deal with a lot of issues: cleanliness, safety, off-normal conditions (e.g., "What do you do if the LRU gets stuck). Gina Bonano, associate project manager for NIF Assembly, Installation and Refurbishment, who recommended the test ahead of schedule, said the test "gives us confidence that if we plan, coordinate, and work together well, we can do more in that facility than we originally planned."

More than three-quarters of the NIF laser glass has been produced, in accordance all NIF specification.

LLNL Associate Director George Miller, who oversees the project, also noted "We have also installed the 1053 nm front end of NIF into the facility, completed the beampath for cluster 3 (1/4 of the facility) and done 10,000 shots without a failure on the pulsed power system (15 years of system lifetime). The facility is really coming together and we are pointing to first light to the target chamber in about 18 mo and real experimental data."

For further information, see the NIF web site: http://www.llnl.gov/nif/