Story tips from the Department of Energy's Oak Ridge National Laboratory, May 2008

To arrange for an interview with a researcher, please contact the Communications and External Relations staff member identified at the end of each tip. For more information on ORNL and its research and development activities, please refer to one of our Media Contacts. If you have a general media-related question or comment, you can send it to .

ACCELERATORS -- Paving the way . . .

A new test facility recently installed at the Spallation Neutron Source at Oak Ridge National Laboratory could pay dividends for "big science" projects down the road, including the proposed International Linear Collider. The cryomodule test facility was built to test the superconducting linear accelerator's rf, or radiofrequency, components. As the SNS ramps up toward its full 1.4 megawatts of power, project engineers saw the need for an on-site test facility that can mirror conditions created by the increasingly powerful rf-generated ion beam. Recently one superconducting cryomodule was taken off the linac, repaired and commissioned in the matter of a few days. Similar systems in future, large linac facilities, such as the ILC, stand to benefit from the recent rf superconducting technologies and techniques being explored and developed at the SNS. [Contact: Bill Cabage, (865) 574-4399; ]

ENERGY -- Rubber hits the road . . .

Tractor-trailers operating with single wider tires recorded improved fuel efficiency numbers between 7.2 and 10 percent when compared to rigs operating on standard-sized dual tires. A year-long truck performance study managed by Oak Ridge National Laboratory’s Heavy Truck Safety Research program concluded that trucks carrying payloads up to the federal weight limit of 80,000 pounds had improved miles-per-gallon diesel savings because the wider tires had better rolling resistance performance. The study involved instrumenting a fleet of tractor-trailers accumulating 700,000 miles, making it the most extensive public study yet involving single wider tires. Previous studies by ORNL that involved less data to work with indicated improved fuel efficiency of only 3 percent. The funding source is the DOE Office of Vehicle Technologies. [Contact: Fred Strohl, (865) 574-4165; ]