Two intersecting storage rings (8 GeV, 1 A and 3.5 GeV, 2 A) have been proposed to be built at Cornell University to enhance both the production ofBmesons and synchrotron radiation. Exceedingly high x‐ray flux from 3‐m long undulators will be the new feature of aBfactory for the CHESS laboratory. The flux produced integrated over the central cone of radiation can be as much as an order of magnitude higher than from the third‐generation storage rings (now under construction) operating at 0.1 A.