SLAC Today is
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In this issue:
Where the LCLS Ends: The XCS Instrument
President Obama Addresses the National Academy of Sciences, Launches Science Policy Forum
Colloquium Today: A Water Crisis for a Billion People
Monday - April 27, 2009 |
Where the LCLS Ends: The XCS InstrumentThe Linac Coherent Light Source will pack a wallop. When it begins operation later this year, the LCLS will provide 10 trillion X-ray photons in a flash of about 100 femtoseconds—a quadrillion times faster than accomplished by today's best storage-ring-based synchrotron lightsources. When these powerful bursts of X-ray light reach the LCLS Far Experimental Hall in 2012, they will for the first time encounter the X-Ray Correlation Spectroscopy instrument, XCS for short. Using the powerful LCLS beam and a new extension of an experimental technique, the XCS will allow researchers to observe dynamical interactions within molecules on very short time scales. "This instrument will let us investigate nanoscale dynamics," said XCS Instrument Scientist Aymeric Robert. "We'll be looking at fundamental molecular motion on a very short time and length scale." Read more... President Obama Addresses the National Academy of Sciences, Launches Science Policy ForumThis morning, President Barack Obama addressed members of the National Academy of Sciences at the academy’s 146th annual meeting in Washington, DC. The academy announced it will post audio and video recordings of the speech to the NAS Web site. The president's address came closely after the launch of a new Office of Science and Technology Policy blog, intended as a vehicle for conversation and public comment on the president's March memorandum on scientific integrity. According to the White House blog, the president provided this context in his remarks today: On March ninth, I signed an executive memorandum with a clear message: Under my administration, the days of science taking a back seat to ideology are over. Our progress as a nation – and our values as a nation – are rooted in free and open inquiry. To undermine scientific integrity is to undermine our democracy. It is contrary to our way of life. That’s why I have charged John Holdren in the White House Office of Science and Technology Policy with leading a new effort to ensure that federal policies are based on the best and most unbiased scientific information. I want to be sure that facts are driving scientific decisions – and not the other way around. As part of this effort, we've already launched a Web site that allows individuals to not only make recommendations to achieve this goal, but to collaborate on those recommendations; it is a small step, but one that is creating a more transparent, participatory and democratic government. Colloquium Today:
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