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Together with most of LPI 's summer intern students , we return to LPI after a futile attempt to witness the impact of fragment B at the local observatory at Brazos Bend State Park . For those of you who have not followed the growth of LPI , the project started in the fall of 1998 from a series of mailing lists where people were discussing what a certification program for professionals might look like for Linux . We have also fabricated W / SiC bilayer mirrors with the help of LPI , which should have near 30 % efficiency in the 60-100 nanometer range for nonlinear studies . Here is a graph , taken from this paper by Clifford Will , of various tests of the principle of LPI ( the post-PPN parameter alpha measures the hypothetical deviation of gravitational redshift from the predictions of gtr ) . To investigate the utility of AMR in the simulation of LPI , we are developing a research code called ALPS ( Adaptive Laser Plasma Simulator ) .