Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

ORNL’s Spallation Neutron Source warms up for 2006

27.09.2004


The warm section will provide 20 percent of the total acceleration of the Spallation Neutron Source’s linear accelerator.


With the recent "warm commissioning" of its linear accelerator, Oak Ridge National Laboratory’s Spallation Neutron Source (SNS) has passed a crucial test and milestone on its way to completion in 2006.

The SNS’s linear accelerator, or linac, is composed of two sections: the "warm," or room temperature section, and a superconducting section that operates at temperatures hundreds of degrees below zero. Los Alamos National Laboratory, part of the team of six DOE national laboratories collaborating on the SNS construction project, is responsible for the warm linac. "The successful commissioning of the warm linac is another step toward the 2006 completion of the SNS, and again demonstrates the success of the collaboration of national labs in keeping the project on time, on budget and on scope," said SNS Director Thom Mason.

The warm section will provide 20 percent of the total acceleration of the 1,000-foot-long linac. The linac’s superconducting section, provided by the Thomas Jefferson National Accelerator Facility, will provide 80 percent of linac acceleration. Testing also has begun of components of the superconducting portion, which consists of niobium cavities chilled by liquid helium to minus 456 degrees Fahrenheit.



Members of the Los Alamos SNS Division celebrated a job well done when components of the warm linac were shipped from the New Mexico laboratory to the project site in East Tennessee in April. "Professionally, this was the job of a lifetime: being able to contribute to DOE Office of Science’s biggest project," said Los Alamos SNS Division Leader Don Rej. "The excitement of working on big projects like this one comes from solving a seemingly endless string of insoluble problems, and solving them within budget and schedule constraints."

Because of their lack of charge, neutrons have a superior ability to penetrate materials. Researchers can determine a material’s molecular structure by analyzing the way the neutrons bounce, or scatter, after striking atoms within the structure. Using computational methods and state of the art instruments, researchers will better understand the molecular reasons behind the materials’ properties, which even with existing resources has resulted in the development of superior materials.

The SNS will produce neutrons for materials, biological and other scientific research by sending a high-energy beam of protons down a 1,000-foot linear accelerator to ultimately strike a mercury target, which will "spall" neutrons that are directed to the host of analytical instruments. "The warm linac commissioning is significant because it verifies the performance of the entire warm linac and ensures successful operation of the entire facility," said SNS Accelerator Systems Division Director Norbert Holtkamp. "Testing of the cold linac components is time critical to allow for the transition of the tests from Jefferson Lab to ORNL, which is a major step toward the transition from construction to operation."

The SNS will increase the number of neutrons available to researchers nearly tenfold, providing clearer images of molecular structures. Combined with ORNL’s High Flux Isotope Reactor, the SNS will represent the world’s foremost facility for neutron scattering analysis, a technique pioneered at ORNL shortly after World War II.

In addition to Los Alamos and Jefferson Lab, four other national laboratories collaborate on the DOE Office of Science project: Oak Ridge, Argonne, Lawrence Berkeley and Brookhaven. Berkeley Lab has completed the "front end," where the proton beam is initially generated. Brookhaven has responsibility for the SNS’s accumulator ring, a stage between the linac and target. Argonne leads the design of the facility’s scientific instruments. ORNL is responsible for the target and will be responsible for operating the SNS.

When completed in 2006, SNS will become the world’s leading research facility for study of the structure and dynamics of materials using neutrons. It will operate as a user facility that will enable researchers from the United States and abroad to study the science of materials that forms the basis for new technologies in energy, telecommunications, manufacturing, transportation, information technology, biotechnology and health.

Oak Ridge National Laboratory is a multiprogram laboratory managed for the Department of Energy by UT-Battelle.

Bill Cabage | EurekAlert!
Further information:
http://www.ornl.gov

More articles from Physics and Astronomy:

nachricht Pulses of electrons manipulate nanomagnets and store information
21.07.2017 | American Institute of Physics

nachricht Vortex photons from electrons in circular motion
21.07.2017 | National Institutes of Natural Sciences

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

Im Focus: On the way to a biological alternative

A bacterial enzyme enables reactions that open up alternatives to key industrial chemical processes

The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....

Im Focus: The 1 trillion tonne iceberg

Larsen C Ice Shelf rift finally breaks through

A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...

Im Focus: Laser-cooled ions contribute to better understanding of friction

Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision

Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Closing the Sustainability Circle: Protection of Food with Biobased Materials

21.07.2017 | Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

 
Latest News

NASA looks to solar eclipse to help understand Earth's energy system

21.07.2017 | Earth Sciences

Stanford researchers develop a new type of soft, growing robot

21.07.2017 | Power and Electrical Engineering

Vortex photons from electrons in circular motion

21.07.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>