This latest DOE approval step, known as Critical Decision 3, triggers spending for major components of the project, including the remainder of the 5,000 finger-width, 10-inch-long cylindrical robots that will precisely point the fiber-optic cables to gather the light from a chosen set of galaxies, stars, and brilliant objects called quasars. (Berkeley Lab News Center, August 9, 2016)
The U.S. Department of Energy has announced its approval of Critical Decision 2 (CD–2), authorizing the project’s scientific scope, schedule, and funding profile. (Berkeley Lab News Center, September 21, 2015)
To the left is a photograph of our largest corrector lens, C1, measuring 1.15m in diameter. The homogeneity of the fused silca glass came in at an astounding 1ppm (exceeding our 3ppm spec.). C1 and C4 are about to be packed up and shipped from Corning to L3-Brashear. L3-Brashear was recently selected to polish C1 and C4. Arizona Optical Sciences is already at work polishing C2 and C3. We expect all four of these lenses to be completed through polishing by the end of 2015.
We are pleased to announce that the Heising-Simons foundation has awarded $1.15M to the DESI Project. The purpose of the award will be to fabricate the long-lead optics of the corrector (C1 and C4). We expect to receive the funds shortly. (Today At Berkeley Lab, October 20, 2014)
9-11 September 2014: “Last week, the Dark Energy Spectroscopic Instrument project, DESI, passed a critical early review known as CD-1. For the review, the Department of Energy’s Office of Project Assessment brought in a panel of 14 experts to review the conceptual design, preliminary timelines, and a budget range. The next step, CD-2, will be to establish a cost baseline and approve the preliminary design…” (Today At Berkeley Lab, September 15, 2014)
10 June 2014: “On June 10th in Washington D.C. Natalie Roe, Director of the Physics Division at Berkeley Lab, testified at a congressional subcommittee hearing on the future of particle physics, prompted by the recent release of the Particle Physics Project Prioritization report…She also spoke of the mystery of dark energy—an unexplained force that appears to be accelerating the expansion of the universe—and outlined an exciting new effort called the Dark Energy Spectroscopic Instrument, or DESI…” (Berkeley Lab News Center, June 20, 2014)
28-30 May 2014: “DESI — the Dark Energy Spectroscopic Instrument — is slated to provide the most comprehensive picture of the universe to date, bringing into focus the 3-D location of as many as 25 million galaxies and quasars. The data from DESI will give scientists insight into mysterious dark energy and the expansion of the universe….” (Today At Berkeley Lab, June 2, 2014)
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