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In this issue:
LCLS Beam is Back—And Twice as Fast!
Save the Date: WIS 20th Anniversary Lunchtime Seminar January 20
Volunteers Needed to Explore Einstein's Universe

SLAC Today

Monday - January 10, 2011

LCLS Beam is Back—And Twice as Fast!

(Photo - the LCLS Undulator Hall)
Inside the 130-meter LCLS Undulator Hall, a series of alternating-pole magnets cause near-lightspeed electrons to emit coherent X-rays. (Photo by Brad Plummer.)

The Linac Coherent Light Source came back online early last week, after a holiday hiatus. On Thursday the LCLS team ramped the X-ray laser up to its full design rate of 120 pulses per second—twice its previous operating rate—for the first time. And like the first attempts to create X-ray laser light at LCLS in 2009, it worked elegantly.

"Due to the careful way that things were shut down for the Christmas break, we were able to bring the accelerator back up in the same state as before the break, with very few glitches," said LCLS accelerator physicist Jim Turner. "Shortly after that, we raised the repetition rate of the accelerator from 60 Hertz to 120 Hertz. That was also well planned, and worked very well."

The higher repetition rate—the rate at which electron pulses travel through the linear accelerator, and the rate at which those electrons produce X-ray pulses—means scientists using the LCLS can collect data twice as fast as before.  Read more...

Save the Date: WIS 20th Anniversary Lunchtime Seminar January 20

(Image - WIS logo)

This month, the Women's Interchange at SLAC will celebrate 20 years of organizing monthly public seminars on topics of particular interest to women—and men, too. WIS was founded in January 1991 to provide an open, informal forum to address issues of interest and concern to women; to promote the visibility of women at SLAC; and to share information among all SLAC departments, cultures and job classifications.

The 20th anniversary celebration will take place at noon on Thursday, January 20, in Panofsky Auditorium. First, SLAC Chief Financial Officer Linda Rakow will present "From There to Here," discussing her personal history, education, career path and how she sees her role at SLAC. Immediately following Rakow's talk, join in for the WIS 20 Year Celebration. Everyone is welcome—bring your lunch and a friend!

Volunteers Needed to Explore Einstein's Universe

Volunteers are needed to help host an evening program on Wednesday, February 23 at 7 p.m. in Panofsky Auditorium. Physicist Brian Foster and musician Jack Liebeck will present Einstein’s Universe: The Scientist, the Man, the Musician. This special lecture, interspersed with classical music, explores Einstein's legacy to physics and the role music played in his life.

Please contact Pat Kreitz if you are able to help that evening with assisting the performers and audience check-in and seating. When online registration opens later in January, space will be limited—however, volunteers will have front row reserved seats!




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