DOE Office of Science Archives

Neutron production at ORNL’s SNS reaches design power level

Posted at 2:05 pm December 3, 2018
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The Spallation Neutron Source at Oak Ridge National Laboratory has reached its operational power design level by running a neutron production cycle at 1.4 megawatts, the lab said Tuesday, Nov. 27, 2018. (Photo courtesy ORNL)

The Spallation Neutron Source at Oak Ridge National Laboratory has broken a new record by ending its first neutron production cycle in fiscal year 2019 at its design power level of 1.4 megawatts.

Higher power provides more neutrons for researchers who use the facility to study a wide range of materials, an ORNL press release said. The achievement marks a new operational milestone for neutron scattering in the United States and opens the door to studying significantly smaller materials with greater complexity, the press release said.

“The operation of SNS at 1.4 megawatts this cycle has been an outstanding achievement,” said Paul Langan, associate laboratory director for neutron sciences. “It reflects on the maturity of our facility and the high level of technical excellence of our engineering, operational, and scientific staff.”

The power increase was enabled by the combination of extensive improvements to the linear accelerator, including the recent replacement of the radio frequency quadrupole—the first accelerating structure of the accelerator’s frontend assembly, as well as improvements to the liquid mercury target. [Read more…]

ORNL’s Bland receives DOE Secretary’s Appreciation Award for computing leadership

Posted at 9:24 pm June 26, 2018
By Oak Ridge Today Staff Leave a Comment

Buddy Bland (Photo courtesy ORNL)

Arthur “Buddy” Bland, program director of the Oak Ridge Leadership Computing Facility at Oak Ridge National Laboratory, has received the Secretary’s Appreciation Award for his nearly four decades of achievements in providing high-performance computing resources for science, a press release said.

Bland was cited by U.S. Energy Secretary Rick Perry for his work “in recognition of nearly 40 years of leadership in delivering high-performance computing resources to address the nation’s science and engineering challenges across a wide array of disciplines and for critical contributions to the success of the Oak Ridge Leadership Computing Facility and sustained U.S. leadership in high-performance computing and computational science.”

Bland led the project to deliver the Summit supercomputer, launched June 8 at ORNL as “the world’s most powerful and smartest supercomputer” with a peak performance capability of 200 petaflops, or 200,000 trillion calculations per second. Summit was listed number one in the TOP500 list released on Monday. [Read more…]

DOE announces $1.8 billion program for new supercomputers, with one at ORNL

Posted at 11:23 am April 9, 2018
By John Huotari Leave a Comment

Rick Perry

Note: This story was last updated at 12 p.m.

The U.S. Department of Energy announced a new supercomputing program on Monday that could be worth up to $1.8 billion and deploy two systems, with one at Oak Ridge National Laboratory, that would be 50 to 100 times more powerful than today’s computers.

The new systems are called exascale computers. DOE said the new supercomputers will solidify United States leadership in exascale computing.

The initiative was announced by U.S. Energy Secretary Rick Perry in Washington, D.C., on Monday. Perry announced a request for proposals, or RFP, for the development of at least two new exascale supercomputers to be deployed at DOE national laboratories sometime around 2021-2023.

“The new supercomputers funded through this RFP will be follow-on systems to the first U.S. exascale system authorized by Secretary Perry this past June, named Aurora, which is currently under development at Argonne National Laboratory and scheduled to come online in 2021,” a press release said. The RFP announced Monday envisions the possibility of upgrades to Aurora or even a follow-on system in 2022-2023, “depending on an assessment of needs and opportunities at that time.” [Read more…]

Fleischmann: Supercomputing race could change with Summit at ORNL

Posted at 3:16 pm March 18, 2018
By John Huotari Leave a Comment

The installation of the Summit supercomputer continues at Oak Ridge National Laboratory on Jan. 23, 2018, with the Oak Ridge Leadership Computing Facility and IBM teams receiving and installing compute nodes. Summit will come online in late 2018 for early science, and will be available to users in January 2019. (Image credit: Jason Richards/ORNL. Used under Creative Commons license)

The supercomputer being built at Oak Ridge National Laboratory could change the race for supercomputing supremacy between the United States and China, U.S. Representative Chuck Fleischmann said during a budget hearing on Thursday.

The congressman said Summit, a 200-petaflop supercomputer at ORNL, will be commissioned this summer, and it will be the fastest supercomputer in the world, with twice the power of the top Chinese system. The Chinese machine is a 93-petaflop system known as Sunway TaihuLight.

During Thursday’s budget hearing, which featured Energy Secretary Rick Perry, Fleischmann said the United States and China are in a race for supercomputing supremacy. The race is critical to advances in science and technology that will drive economic growth, said Fleischmann, a Republican whose district includes Oak Ridge.

Citing a February 9 edition of Science magazine, Fleischmann said the U.S. dominated supercomputer rankings for decades but is now far behind. The combined power of the top two machines in China easily outpaces all 21 supercomputers operated by the U.S. Department of Energy, the country’s top funder of supercomputers, the congressman said.

But that could change with the commissioning of Summit this summer, Fleischmann said. [Read more…]

Two higher-risk buildings torn down at Y-12 Biology Complex

Posted at 11:25 pm March 13, 2018
By U.S. Department of Energy Leave a Comment

Crews tear down Building 9743-2 at the Biology Complex at the Y-12 National Security Complex. (Photo by U.S. Department of Energy Office of Environmental Management)

By U.S. Department of Energy Office of Environmental Management

Oak Ridge is home to more higher-risk excess contaminated facilities than any other U.S. Department of Energy site in the nation, but recent demolition projects are helping change that. This month, the Oak Ridge Office of Environmental Management, or OREM, eliminated two buildings from the higher-risk list.

The projects were part of DOE’s Excess Contaminated Facilities Initiative, an effort to stabilize facilities, reduce risks, and in some cases accelerate demolition schedules. Oak Ridge is of particular interest since the site houses 297 “excess” facilities—facilities that are no longer operational or serving DOE’s missions. As of December 2016, Oak Ridge contained 60 of DOE’s inventory of 203 higher-risk excess facilities.

“These projects are highlighting EM’s value as crews are removing risks and clearing land for DOE’s important ongoing missions,” said OREM Federal Project Director Brian Henry. “Tearing down these high-risk facilities is a first step with many more planned in the years ahead.” [Read more…]

Trump administration requests more money for DOE, NNSA

Posted at 12:56 pm February 12, 2018
By John Huotari Leave a Comment

The sign at the main entrance to the Y-12 National Security Complex is pictured above on Sunday, Aug. 6, 2017. (Photo by John Huotari/Oak Ridge Today)

Note: This story was last updated at 2:50 p.m.

The Trump administration has requested more money for the U.S. Department of Energy and National Nuclear Security Administration than it did last year, but the impact could vary at Oak Ridge’s major federal sites.

The NNSA, a semi-autonomous agency within DOE, would get a big increase of $2.2 billion, compared to spending levels enacted in fiscal year 2017. The boost would raise NNSA funding to $15.1 billion. The Y-12 National Security Complex in Oak Ridge is an NNSA site.

The NNSA proposal is more than $1 billion higher than the $13.9 billion requested by the Trump administration in fiscal year 2018, which was up $1.4 billion over the fiscal year 2016 spending level ($12.5 billion).

Oak Ridge Today reported last year that Y-12’s funding would have been up 25 percent under President Donald Trump’s budget request for the current fiscal year, if Congress had approved the proposed spending levels. [Read more…]

ORNL reports strong interest in voluntary separations, but still needs to review applications

Posted at 10:56 am September 27, 2017
By John Huotari Leave a Comment

Photo by Oak Ridge National Laboratory

There has been strong interest in a voluntary separation program that could reduce the workforce at Oak Ridge National Laboratory by up to 350 positions, but the lab still has to review applications and finalize who qualifies, a spokesperson said Wednesday, the deadline to apply.

The laboratory is still in the middle of reviewing the applications and determining who qualifies, said Morgan McCorkle, ORNL communications media manager.

The workforce could be reduced by up to 350 positions through both voluntary and involuntary separations.

“We still expect to use both mechanisms,” McCorkle said.

The 350-position reduction would decrease the workforce of 4,800 employees by about 7.3 percent. The workforce reduction, which is expected to be completed by the end of this year, was announced by ORNL Director Thomas Zacharia in an August 8 email to employees. [Read more…]

ORNL: Neutrons peer into a running engine

Posted at 3:25 pm September 3, 2017
By Oak Ridge Today Staff Leave a Comment

Researchers used neutrons to probe a running engine at Oak Ridge National Laboratory’s Spallation Neutron Source, giving them the opportunity to test an aluminum-cerium alloy under operating conditions. From left, researchers Orlando Rios, Ke An, and Lt. Eric Stromme show off a cylinder head made from the new alloy. (Photo by ORNL/U.S. Department of Energy)

By Ashley C. Huff, Oak Ridge National Laboratory

In a first-of-a-kind experiment, researchers used neutrons to investigate the performance of a new aluminum alloy in a gasoline-powered engine—while the engine was running.

A team from the U.S. Department of Energy’s Oak Ridge National Laboratory worked with industry partners to perform the test, which looked at whether a high-performance alloy that is promising for automotive applications held up under the heat and stress of an internal combustion engine.

Researchers used neutrons to probe a running engine at ORNL’s Spallation Neutron Source, giving them the opportunity to test an aluminum-cerium alloy under operating conditions.

The feat was a first for the Spallation Neutron Source, said Ke An, lead instrument scientist for the facility’s VULCAN instrument.

“This was the first time an internal combustion engine has been run on our diffractometer, and, as far as we know, on any other,” he said. [Read more…]

ORNL workforce reduction could save $34 million per year, mostly affect those of retirement age

Posted at 11:31 pm August 9, 2017
By John Huotari 3 Comments

The Oak Ridge National Laboratory is pictured above. (Photo by ORNL)

The workforce reduction of up to 350 positions at Oak Ridge National Laboratory is expected to decrease personnel costs by about $34 million each year, and the lab expects most of those who apply for voluntary separations from the lab to be of retirement age, a spokesperson said Wednesday.

The workforce reduction, which is expected to be completed by the end of this year, was announced by new ORNL Director Thomas Zacharia in a Tuesday morning email to employees.

“From time to time, sustaining our work effectively and efficiently requires the most difficult of decisions, which is to reduce our staff in certain areas of the lab,” Zacharia said in that email.

The lab hopes to reduce its workforce of 4,800 employees by about 7.3 percent (350 positions) using voluntary separations. Involuntary separations will be used if necessary.

On Wednesday, ORNL spokesperson Morgan McCorkle said the lab plans to reduce about 250 overhead positions and 100 research and development jobs. Overhead jobs are those not directly related to research. The research and development staff who will be eligible for voluntary separations are those who charge more than half of their time to overhead accounts or whose program budgets were reduced in fiscal year 2017, McCorkle said.

A specific breakdown of the affected jobs is not yet available. [Read more…]

ORNL: World’s smallest neutrino detector finds big physics fingerprint

Posted at 9:37 am August 8, 2017
By Oak Ridge National Laboratory Leave a Comment

From left, Professor Yuri Efremenko of the University of Tennessee in Knoxville and Jason Newby of Oak Ridge National Laboratory are among 80 participants in COHERENT, a large, collaborative, particle physics experiment to record neutrinos at the Spallation Neutron Source. Photomultiplier tubes look like giant light bulbs and are used to detect light from neutrino interactions in detectors. COHERENT’s cesium iodide detector, the first to espy neutrinos at the SNS, employs a five-inch (13-centimeter) wide photomultiplier tube. An eight-inch (20-centimeter) wide photomultiplier (shown here) is deployed in COHERENT’s nearby liquid-argon detector. Measurements from different types of detectors are necessary for comprehensive studies of neutrinos at SNS. The scientists are standing in front of the cesium-iodide-detector shielding. (Image credit: Oak Ridge National Laboratory, U.S. Department of Energy; photographer Genevieve Martin)

By Dawn Levy/ORNL

After more than a year of operation at Oak Ridge National Laboratory, the COHERENT experiment, using the world’s smallest neutrino detector, has found a big fingerprint of the elusive, electrically neutral particles that interact only weakly with matter.

The research, performed at ORNL’s Spallation Neutron Source and published in the journal Science, provides compelling evidence for a neutrino interaction process predicted by theorists 43 years ago but never seen.

“The one-of-a-kind particle physics experiment at Oak Ridge National Laboratory was the first to measure coherent scattering of low-energy neutrinos off nuclei,” said ORNL physicist Jason Newby, technical coordinator and one of 11 ORNL participants in COHERENT, a collaboration of 80 researchers from 19 institutions and four nations.

The SNS produces neutrons for scientific research and also generates a high flux of neutrinos as a byproduct. Placing the detector at SNS a mere 65 feet (20 meters) from the neutrino source vastly improved the chances of interactions and allowed the researchers to decrease the detector’s weight to just 32 pounds (14.5 kilograms). In comparison, most neutrino detectors weigh thousands of tons: although they are continuously exposed to solar, terrestrial, and atmospheric neutrinos, they need to be massive because the interaction odds are more than 100 times lower than at SNS.

The scientists are the first to detect and characterize coherent elastic scattering of neutrinos off nuclei. This long-sought confirmation, predicted in the particle physics Standard Model, measures the process with enough precision to establish constraints on alternative theoretical models. [Read more…]

Y-12‘s Biology Complex would be top priority if excess cleanup funding available

Posted at 1:41 pm July 23, 2017
By John Huotari Leave a Comment

An aerial view of the Biology Complex at the Y-12 National Security Complex. Plans call for eventually demolishing the complex. (Photo courtesy U.S. Department of Energy)

If excess funding is available, the federal cleanup program in Oak Ridge has a top priority: the Biology Complex at the Y-12 National Security Complex.

The budget request submitted to Congress by President Donald Trump on Tuesday, May 23, included $225 million for high-risk excess contaminated facilities at Y-12 and Lawrence Livermore National Laboratory in California.

It’s not clear how much of that money might be used in Oak Ridge, if the president’s budget request were approved. Officials said the allocations would be determined by U.S. Department of Energy headquarters.

But the Oak Ridge cleanup program, known as environmental management, has taken steps to ensure that some projects here, such as the planned demolition of Y-12’s Biology Complex, are “in a good position” if money becomes available.

On Friday, Jay Mullis, acting manager for the DOE Oak Ridge Office of Environmental Management, or EM, said the Biology Complex would be a primary priority if Y-12 gets some portion of the $225 million proposed by the Trump administration.

“Provided there is excess funding, that would be the building we would go after,” the Oak Ridge EM program said. [Read more…]

House bill keeps DOE Office of Science spending flat, increases NNSA funding

Posted at 2:02 pm July 18, 2017
By John Huotari Leave a Comment

Photo by ORNL

Chuck Fleischmann

A House bill approved Wednesday rejected the Trump administration’s proposed funding cut of about $900 million for the U.S. Department of Energy Office of Science.

Instead of cutting, the House Appropriations Committee bill would keep spending flat for the Office of Science, holding it at $5.39 billion in the next fiscal year, the same as in the current fiscal year.

That could be good news for DOE Office of Science laboratories and offices here, including Oak Ridge National Laboratory and the Office of Scientific and Technical Information, or OSTI.

Separately, the House bill recommends a funding increase for the National Nuclear Security Administration. That’s something that the Trump administration had also proposed. The NNSA is a semi-autonomous agency within DOE, and its activities include nuclear weapons work, nuclear nonproliferation efforts, and naval reactors. The Y-12 National Security Complex in Oak Ridge is an NNSA site.

“Issues of national and economic security are continually on the forefront of the minds of all Americans,” said U.S. Representative Chuck Fleischmann, a Republican whose district includes Oak Ridge. “Last week, the House Appropriations Committee, on which I serve, approved the Fiscal Year 2018 Energy and Water Appropriations Bill. I was proud to help direct additional funding towards the national security programs at Y-12.

“Additionally, funding levels included in this legislation will allow for cleanup of high risk excess facilities at Y-12. This is the first step in a long process, and I want to assure my constituents that I will continue fighting to ensure that Y-12, Oak Ridge National Laboratory, and environmental management activities get the funding needed to continue their critical missions.” [Read more…]