Brookhaven light source invites user interest Available to Purchase

To plan for the use of the National Synchrotron Light Source facility at Brookhaven National Laboratory, the lab is asking for expressions of interest or intent from potential users. The facility is now under construction; groundbreaking ceremonies were held 28 September. It is to consist of two electron storage rings, a 0.7‐GeV ring to provide radiation between the infrared and about 10 Å, and a 2.5‐GeV ring whose spectrum will extend down to about 0.1 Å (see PHYSICS TODAY, March 1977, page 17). The smaller ring is scheduled to be available for users by mid‐1981; the larger is expected to be ready in late 1981 or early 1982.