Argonne National Laboratory (Click on image for larger version.)

Among several groups from the two neighboring labs collaborating on ILC projects, Argonne's Louis Emery and Fermilab's Aimin Xiao have formed a team for lattice design work on the damping ring. The many critical issues for any design damping ring design include beam aperture, bunch length, circumference (the target is 6 km), length of the straight sections, and different configurations (for example, circular and "dog bone"). Emery and Xiao gave a talk Wednesday morning in the weekly ILC seminar series.

Louis Emery

Physicist and engineers at Argonne's Advanced Photon Source are world leaders in electron storage rings, with extensive experience in designing radiation devices called undulators and wigglers for damping electron and positron beams. Argonne accelerator physicists are also working with Fermilab groups on a chemical processing lab at Argonne for superconducting RF cavities, and on a facility to test the performance of high-gradient RF structures built at Fermilab.
View slides in PDF format from the Emery and Xiao talk
-Mike Perricone

There was a wide sampling of healthy respect expressed for Hanson during his retirement celebration Thursday at Site 37, as one friend and colleague after another attested to his dual gifts for flat-out verbal honesty, and for lifting the spirits of those around him. "When I first got here, I asked Don why he didn't get the buffalo out of the cold and into the barn," said Vic Kuchler, Deputy Head of FESS. "Don looked at me patiently and said, 'If you try to put them in the barn, you'll just make them angry.' "

Ellen Lederman, wife of Director Emeritus Leon Lederman, remembered the sign Hanson made for the buffalo pasture fence that was once pictured in "Playboy" magazine: "Can you cross this pasture in 10 seconds? The bull can do it in 9.9." Mike Becker, head of Roads and Grounds, said Hanson's wry taciturnity was just the surface. "No matter what was going on in Don's life," Becker said, "he was quick-witted, fun to be around, and he could always say something to make you stand back and laugh."

Following his last day at the lab today after more than 28 years, Hanson and his wife Carol are relocating to a farm in southern Illinois, about 25 miles south of Marion in the Shawnee National Forest region. Hanson said he has no shortage of tasks ahead of him, including continuing to build elegant horse-drawn carriages. "I'd like to stay at the lab," Hanson said, "but I've got too much work to do. I built this herd from 20 head up to 135 at its peak, and now we have 54 or 55. These animals have done well for me. I have friends all over the country because of these animals. Everyone at the lab has treated me well. I have lots of memories."

Associate Director Jed Brown described the buffalo of Fermilab as icons. "They're a symbol of this lab, and they're appreciated far and wide," Brown said. "They're prize animals, always given the best care. We can all be proud. Don-your work has been appreciated far and wide."
-Mike Perricone