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Hard X-rays Reach LCLS Pump Probe Instrument
SLAC Users Organization Delegates Visit Washington, DC
Blood Drive Today

SLAC Today

Wednesday - June 9, 2010

Hard X-rays Reach LCLS Pump Probe Instrument

XPP instrument team checks the beam in the control room. (Photo by Julie Karceski.)

On June 7, the X-ray Pump Probe instrument became the first of the Linac Coherent Light Source's scientific instruments to receive hard X-rays.

"This is a big milestone for everyone involved," said instrument scientist David Fritz. "Now the fun begins!"

The XPP instrument will be the third of LCLS's six instruments to go online, but the first hard X-ray instrument. "Hard" X-rays have higher energies and shorter wavelengths than "soft" X-rays, so they penetrate further into materials. This instrument will first "pump" samples with an optical-wavelength laser beam to initiate a reaction or push the sample into an excited state. Quickly following the "pump," X-rays will strike the sample to "probe," or take an image. By stringing together multiple images taken with different time intervals between "pump" and "probe" light, scientists hope to create movies of molecules in motion.  Read more...

SLAC Users Organization Delegates Visit Washington, DC

(Photo - user organization delegates at the capitol building in DC)
User organization delegates from SLAC, Fermilab and the US Large Hadron Collider in Washington, DC. (Photo courtesy the SLAC Users Organization.)

February 24–26, 2010, 34 delegates from the SLAC Users Organization, Fermilab Users' Executive Committee and the US Large Hadron Collider Users Organization visited 173 congressional offices in Washington, DC. The delegation also met with representatives from the Office of Science and Technology Policy, Department of Energy Undersecretary for Science, DOE Office of Science for High Energy Physics, the National Science Foundation Physics Division, as well as with the Office of Management and Budget.

The 10-member SLUO delegation represented that part of the high energy physics community associated with SLAC research. Acting as private citizens, the delegates expressed thanks to the members of Congress for their past support of science and requested continued support for high energy physics research through the Department of Energy's Office of Science and the National Science Foundation in the proposed 2011 budget to Congress. The delegates also requested support for this year's reauthorization of the America COMPETES Act, which (when first passed in 2007) authorized a doubling of the DOE, NSF and National Institute of Standards and Technologies budgets over a ten-year period. The delegates brought a message of the exciting and relevant nature of their basic research programs, the wide range of applications from the field benefitting society at large as well as the central role our field plays in educating the next generation of innovators.  Read more...

Blood Drive Today

The SLAC Blood Drive will take place today in the Panofsky Auditorium breezeway. All are invited to help SLAC hold its own in the competition among tech companies in the Bay Area that, like SLAC, hold at least four blood drives during 2010.

Participating organizations such as Apple, Cisco, eBay, Google—and SLAC—will be awarded "points" after each drive, based on performance. In addition to helping put SLAC in the running to win, donors will receive a special water bottle. And most of all, blood donors get the satisfaction of knowing they've helped to provide hope and life to a patient in a local hospital.

The blood drive is open to members of the SLAC community and the general public. Please make an appointment or drop by when it is convenient for you. To make an appointment or for further information, please see the SLAC Blood Drive page.


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