Jefferson Lab researchers utilize CLAS and CEBAFs 5.7 GeV continuous beam to gather new insights on several fundamental questions about the neutron
The CEBAF Large Acceptance Spectrometer (CLAS) is like a perfect survey instrument. Because it surrounds the interaction point in Jefferson Labs Hall B, it can record several particles produced in a subatomic interaction at once. More than 40,000 data channels convey information on the trajectory (measured with drift chambers), speed (time-of-flight counters) and energy (electromagnetic calorimeters) for all detected particles, up to 3,000 times a second. Often, multiple experiments run at the same time in Hall B, and data for all of them are collected simultaneously.
During the recent (February through mid-March) run dubbed "E6," researchers used CLAS together with CEBAFs 5.7 GeV continuous electron beam to gather new insights on several fundamental questions about the neutron. The neutron is one of the two building blocks (together with the proton) of every nucleus, and its properties are just as interesting and important as those of the proton. Unfortunately, these properties are usually obscured because neutrons are generally bound inside nuclei. E6 collaborators from several universities and Jefferson Lab, working on the experiment "Electron Scattering from a High-Momentum Nucleon in Deuterium" are seeking a clearer view of this elusive neutral partner of the proton. This experiment was proposed by co-spokespersons Keith Griffioen, College of William and Mary; and Sebastian Kuhn, Old Dominion University.
Linda Ware | EurekAlert!
From rocks in Colorado, evidence of a 'chaotic solar system'
23.02.2017 | University of Wisconsin-Madison
Prediction: More gas-giants will be found orbiting Sun-like stars
22.02.2017 | Carnegie Institution for Science
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Life Sciences
24.02.2017 | Life Sciences
24.02.2017 | Trade Fair News