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In this issue:
From the Acting Director of SSRL: Deliberate, Stepwise Progress to 500 mA
From the SLAC Archives: Forty Years Ago Tomorrow

SLAC Today

Friday - February 26, 2010

From the Acting Director of SSRL: Deliberate, Stepwise Progress to 500 mA

(Photo - Piero Pianetta)
(Photo by Brad Plummer.)

At the time I wrote my last article for SLAC Today, the Stanford Synchrotron Radiation Lightsource was just starting to come out of the summer shutdown having completed improvements that would enable the SPEAR3 storage ring to run with top-off injection at 500 mA. I am happy to report that in spite of rainstorms, the power outage and a water leak in a beamline mask, we have made excellent progress toward that goal over the past four months.

The process for reaching this goal must, by necessity, be deliberate, with safety and performance tests being performed at each step. For example, before we are able to routinely operate a beamline with shutters open during injection, careful tests are performed by the Radiation Protection Department to insure that there are no hazardous radiation levels present during injection. These tests are performed beamline by beamline every two weeks during the accelerator physics days and require an active collaboration between the Accelerator, Beamline and Radiation Protection groups. Remember that except for the two accelerator physics days every two weeks, we are running in production mode for users that come for periods as short as 8 hours. As of this week, only one beamline remains to be certified. We hope to complete this phase of the process during the next two-week accelerator physics cycle. 

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From the SLAC Archives:
Forty Years Ago Tomorrow

(Image - SLAC News front page April 1970)
SLAC News front page April 3, 1970.

Forty years ago this month French President Georges Pompidou was the first head of state to visit SLAC while in power. The president arrived by helicopter on the SLAC Green on Friday, February 27, 1970.

Pompidou's visit is recorded in archived issues of SLAC's original newsletter, SLAC News (1966-1971), and photographs:

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