The American Association for the Advancement of Science (AAAS) has named its 2013 fellows, and three Berkeley Lab researchers are among the recipients. The awardees include Stephen Cramer (left) of the Physical Biosciences Division, Norman Edelstein (center) of the Chemical Sciences Division, and retiree Glen Lambertson of the Accelerator and Fusion Research Division. Former Berkeley Lab earth scientist Terry Hazen (now at Oakridge Lab) was also included. More>
Posts Tagged ‘Accelerator and Fusion Research Division’
Wulf Kunkel, a physicist who joined Berkeley Lab in 1956 and retired in 1991, passed away on Sept. 3. Kunkel served as the lead of the Fusion Research Group at the Lab from 1971 to 1991. After his retirement, he continued as an affiliate of the Accelerator and Fusion Research Division. He was also a professor at UC Berkeley, where he received his B.A. and Ph.D. degrees. Kunkel’s research focused on astrophysics, basic aspects of plasma physics, controlled nuclear fusion power, developing novel powerful deuterium injectors for heating, ionization phenomena in gases, physics, plasma in the large magnetic confinement fusion experiments, and space sciences.
FPGA-Based “Bunch Cleaning” System at the Advanced Light Source, a paper authored by Engineering Division’s, Jonah Weber, Michael Chin, Walter Barry, and AFRD’s Fernando Sannibale, was recognized as the 11th most downloaded article at Elsevier’s “Science Direct” publication. Elsevier is a leading provider of science and health information. The article introduces a new bunch-cleaning system for the ALS storage ring that will be compatible with a future “top-off” user operation mode, allowing for a near constant stream of current.
It isn’t often when a review team makes its way up the hill to inspect and give its blessing on a new accelerator. The last time was in 1993 when the Advanced Light Source started hurtling electrons at just under the speed of light. The BELLA project was the latest. More>
Two articles by Andre Anders of the Accelerator and Fusion Research Division have been recognized as among the top papers of the year by the American Institute of Physics (AIP), publisher of The Journal of Applied Physics, the largest journal in the field of applied physics with close to 4,000 peer-reviewed papers annually. In its selection of the top 30 articles from 2012, two were co-authored by Anders. His Lab co-authors were Rueben Mendelsberg (formerly in EETD, later a visiting scientist in AFRD), Pavel Ni of AFRD, and Albert Rauch, a visiting scientist in AFRD who has since returned to Austria. See pages 5 and 6 of this PDF. Anders and coworkers used emissive probes and fast optical techniques to measure high power pulsed magnetron plasmas with unprecedented resolution. Their findings help to develop the next generation of thin film deposition technology.
GianLuca Sabbi of the Accelerator and Fusion Research Division (AFRD), led Berkeley Lab’s contribution to the successful development of a powerful superconducting quadrupole magnet, made from high performance niobium tin, that will be central to a major upgrade planned for CERN’s Large Hadron Collider (LHC). The magnet, dubbed HQ02a, was built and successfully tested through the U.S. LHC Accelerator Program (LARP). Other key contributors from the Lab included Franck Borgnolutti, Helene Felice, Dan Cheng, Maxim Martchevksky, Prabir Roy, Tiina Salmi, Dan Dietderich, Arno Godeke, and Xiaorong Wang. More>
Accelerator and Fusion Research Division Director Stephen Gourlay and his team capitalize on an annual safety audit to improve emergency preparedness.
Free-electron laser (FEL) light sources yield striking science but are hampered by repetition rates of a hundred or so x-ray pulses per second. A million pulses a second are needed to drastically reduce experiment time and enable currently impossible experiments. Enter APEX, a prototype electron gun for the front ends of accelerators that power FELs. A team headed by Fernando Sannibale of the Accelerator and Fusion Research Division has proved APEX’s ability to produce a million high-charge, high-quality electron bunches a second from laser-stimulated photocathodes. Next step is to ramp up the beam brightness to next-generation light source specs. More>
Citing the “good scientific overlap with research on the campus and at Berkeley Lab” and the opportunity to advance scientific collaboration among many Middle Eastern countries, Jonathan Wurtele of the Accelerator and Fusion Research Division, a professor of physics at UC Berkeley, initiated an agreement for collaboration among Berkeley Lab and UC Berkeley scientists and colleagues at the Synchrotron light for Experimental Science and Applications in the Middle East (SESAME) in Jordan, which plans to open in 2015. A memo of understanding between UC Berkeley Chancellor Robert Birgeneau and SESAME’s director general Khaled Toukan was completed May 19. More>
This June the core of the Muon g-2 storage ring, built at Brookhaven in the 1990s with help from Berkeley Lab, will move to Fermilab by land and water. Since disassembling the superconducting magnet array isn’t possible, the ring will travel by barge around Florida and up the Mississipi, then by truck to Batavia. Now retired Michael Green, then with Berkeley Lab’s Accelerator and Fusion Research Division, designed the magnets’ cryogenic system and other components during twice-monthly trips to Brookhaven. Muons are heavier cousins of the electron, and at Fermilab the experiment will benefit from much more intense muon beams. More>