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US Department of Energy National Science Bowl


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Features Archive

Showing stories 26-46 out of 46 stories.
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20-Jul-2006
Pocket-sized physics detector does big science
How do quarks and gluons, the elementary constituents of all matter, combine to form the protons and neutrons in the nucleus of the atom? This is a fundamental unsolved question in nuclear physics that researchers at Jefferson Lab are working to answer. The internal structure of the proton has been studied for several decades, and scientists have learned a great deal. However, much less is known about the structure of the neutron.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

20-Jul-2006
Spin structures of protons and neutrons
Just as a top spins on a table, the tiny quarks inside protons and neutrons also spin. Now a complex calculation by theoretical nuclear physicists at Jefferson Lab has revealed that a quark's spin may be altered by the surroundings of the proton or neutron in which it resides. This surprising result, recently published in the journal, Physical Review Letters, may lead to new insights about how ordinary matter is constructed.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

20-Jul-2006
On the leading edge
The Accelerator Division's Institute for Superconducting Radiofrequency (SRF) Science & Technology is a world leader in SRF accelerator technology research and design. Now the newest idea out of the Institute may revolutionize the way accelerating cavities are produced -- making the manufacturing process faster and cheaper, while producing cavities that could potentially outperform any other niobium cavities ever tested.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

20-Jul-2006
Big Bite does its stuff
Jefferson Lab's core mission is to study the heart of ordinary matter: the nucleus of the atom. Now Hall A has a new magnet and detector system designed to help physicists look at the nucleus in a whole new light. "BigBite" has debuted in its first experiment at Jefferson Lab.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

20-Jul-2006
Detector Group builds imaging device for German Research Center
Jefferson Lab Detector Group members traveled to Heidelberg, Germany, to assemble and bring on-line a small-animal imaging device the group developed and built for the German Cancer Research Center. Work on the project began in June 2004. The device is similar other small animal imaging gamma cameras developed by the Detector Group; however, this imager design is based on a new concept developed by Vladimir Popov which resulted in highly improved detector performance.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

5-Jul-2006
G-Zero update
In research performed in Hall C, nuclear physicists have found that strange quarks do contribute to the structure of the proton. This result indicates that, just as previous experiments have hinted, strange quarks in the proton's quark-gluon sea contribute to a proton's properties. The result comes from work performed by the G-Zero collaboration, an international group of 108 physicists from 19 institutions, and was presented at a Jefferson Lab physics seminar on June 17.

Contact: Linda Ware
ware@jlab.org
757-269-2689
DOE/Thomas Jefferson National Accelerator Facility

26-Jan-2005
'Interference' used to study inner structure of protons, neutrons
When you throw two rocks into a pond of water, side-by-side, the ripples created by the rocks will collide and annihilate each other in some areas and combine to make bigger ripples in others. Physicists call this phenomenon interference.

Contact: On Target
webmaster@jlab.org
DOE/Thomas Jefferson National Accelerator Facility

22-Dec-2004
Detector technology aids in development of cystic fibrosis therapy
Studies in mice with a new imaging technique perfected by Jefferson Lab's Detector Group suggest that researchers at Case Western Reserve University may have found a way to replace the gene that causes cystic fibrosis.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

22-Dec-2004
Effective model of the atom gets more realistic
A new paper provides the first tool for describing the nucleus in terms of the most basic building blocks of everyday matter: quarks and gluons.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

22-Dec-2004
New high precision experiment for Jefferson Lab
HYCAL, Jefferson Lab's newest detector took three years to design and build and will be put to the testmaking high precision measurements of the lifetime of the pion particle. This experiment could tell scientists more about symmetry in nature.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

20-Dec-2004
High tech lab gets a high tech control room
Jefferson Lab's nerve center, the Machine Control Center, has been transformed into a state-of-the-art, technologically advanced and ergonomically sound control room ready to meet the challenges of a demanding user community

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

21-May-2004
First seven years of physics with CEBAF
To recognize and review the accomplishments of Jefferson Lab, the JLab User Group Board of Directors organized the symposium which was held June 11-13, 2003 and dedicated to the memory of Nathan Isgur, Jefferson Lab's first Chief Scientist. The meeting was divided into eight topics: nucleon form factors, few-body physics, reactions involving nuclei, strangeness production, structure functions, parity violation, deep exclusive reactions, and hadron spectroscopy. Each topic was presented by one experimentalist and one theorist.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

5-Dec-2003
Anthony Thomas accepts position of Chief Scientist and Theory Group Leader at Jefferson Lab
The Department of Energy's Thomas Jefferson National Accelerator Facility is pleased to announce that Dr. Anthony Thomas has accepted the position of Chief Scientist and Head of the Theory Group at Jefferson Lab.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

25-Jul-2003
Pentaquark: New evidence of an exotic five-quark particle
Results of an international research collaboration have yielded convincing evidence of a subatomic particle consisting of five quarks. The results of the research--conducted at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility--were announced at the Conference on the Intersections of Particle and Nuclear Physics in May 2003.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

18-Jul-2003
Energy secretary breaks ground on nation’s first Nanoscale & Nanotechnology Research Facility
The Oak Ridge facility will be the first of five Energy Department centers. The center will be a world-class, one-of-a kind facility for the fabrication and characterization of materials on the nanoscale.

Contact: Jeff Sherwood
jeff.sherwood@hq.doe.gov
202-586-5806
DOE/Thomas Jefferson National Accelerator Facility

11-Jul-2003
From Georgia with innovation: A profile of Jefferson Lab staff scientist Youri Sharabian
By the time he was in 7th grade, Sharabian had built a small workshop in his family's basement. When his father came home from work with a design for small engine springs, but complained of the difficulties in making them quickly, Sharabian was intrigued and subsequently fashioned a specialized apparatus capable of winding wire accurately and rapidly. His father was so impressed that the innovation was adopted with minor modifications directly onto the factory floor.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

11-Jul-2003
Marie & Pierre Curie’s granddaughter, Hélène Langevin-Joliot, visits the United States
Jefferson Lab science writer Melanie O'Byrne spoke with Langevin-Joliot during the recent International Symposium for Spinal Radiography at Georgetown University. In the following excerpt, she discusses her work, passion for science, and remarkable family history. She is a respected nuclear physicist from the Institute of Nuclear Physics at Orsay, the laboratory set up by her parents, Irène and Frédéric Joliot-Curie, who won a Nobel Prize for chemistry in 1935 for their discovery of artificial radioactivity.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

8-Jul-2003
Thomas Jefferson High School wins National Science Bowl
Thomas Jefferson High School for Science & Technology from Alexandria, Va., won the Department of Energy sponsored, 2003 National Science Bowl competition held May 1- 5 in Washington, D.C. On Feb. 8 they won the Virginia Regional Science Bowl held at Jefferson Lab. This year marked the high school's third straight regional win and second consecutive win at nationals

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

3-Jul-2003
Jefferson Lab’s Science Ed web site sets new high-use record as students prep for SOLs
Jefferson Lab's Science Education web site is a great resource for students, teachers, parents – or anyone interested in information on math, science, and technology. The interactive design of the site lets users select and submit their answer. They are told if their response is right or wrong. If correct, the answer page repeats the question / problem and the correct answer. If incorrect, the answer page provides the question with the correct answer.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

24-Apr-2003
Jefferson Lab hosts 100 of the brightest young minds in math and science
In a question-and-answer game format, the contestants were grilled on their knowledge in various fields of math and science. Morning sessions were in a round-robin format, followed by a double-elimination round in the afternoon. Winning first place earned Thomas Jefferson High School a trip to the Science Bowl Nationals to be held in Washington, D.C. in May. This was the team's third straight regional science bowl win; and it was last year's winner at Nationals.

Contact: Jan Tyler
tyler@jlab.org
757-269-7164
DOE/Thomas Jefferson National Accelerator Facility

6-Sep-2002
$20 SPS membership brings married undergraduate students to Jefferson Lab for research experience
Russell's efforts in calibrating the UTEP/Orsay instrumented collimator allowed Hall B researchers to align the linearly polarized beam to within 50 microns. According to Phil Cole, this is quite an achievement and will increase the quality of data for the g8a run in Hall B. Juliette's time was spent working on the resolutions and count rates for exclusive p0 (pi zero) production. "I've been plotting the resolutions from single-arm phase space simulations."

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

Showing stories 26-46 out of 46 stories.
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