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In this issue:
SLAC Today Takes Stock: How Are We Doing?
Science Today: String Theory Searches for the Standard Model
U.C. Berkeley - Stanford Summer School Deadline
Electrical Safety Tip: Stay Grounded

SLAC Today

Thursday - May 25, 2006

Click on image to see first issue.

SLAC Today Takes Stock:
How Are We Doing?

SLAC Today's first issue was sent to employees and users on the morning of February 27, 2006.

Over the past three months, SLAC Today has become a part of daily life at the lab. It is time to ask our readers how we are doing. With this in mind, SLAC Today is conducting an internet survey.

This Friday, you will receive an e-mail message from me with the subject line "2006 SLAC Today Survey," explaining how to complete the survey online. Please find five minutes to complete the survey, as the results will be used to improve SLAC Today as a daily source of information.

Your name will not be linked to the answers you provide, and an outside agency will tabulate the results. This agency will never identify an individual response and will provide the Office of Communications only with aggregate results. Thank you in advance for your help.

(Daily Column - Science Today)

String Theory Searches
for the Standard Model

(Image - Cat with string) Will string theorists find a solution that describes the real world?

String theory offers the possibility of a route to the "Theory of Everything." It contains all of the ingredients that we see in nature: quarks, leptons, photons, gluons, and gravity. For a long time, string theorists hoped that their equations would have a unique solution describing the real world. In fact, it is not so. The equations of string theory have a huge number of solutions, and we are finding more every day.

The present surge of new results followed the insights of SLAC and Stanford University’s Shamit Kachru, Renata Kallosh, and Andrei Linde, as well as the Tata Institute's Sandip Trivedi. The work of these researchers provided a method for constructing a large number of distinct solutions to string theory.

String theory requires space-time to have ten dimensions. To obtain a universe that appears four-dimensional, the researchers looked for solutions in which the other six dimensions are wrapped up as a specific type of compact space called a Calabi-Yau manifold. To this geometry they then added various loops and sheets (called branes) that wrapped around the Calabi-Yau manifold, and various types of electric and magnetic fields that threaded along smooth closed paths. Kachru and his collaborators argued that there exist a huge number of solutions of this type—at least 10500, by some estimates.  Read more...

U.C. Berkeley - Stanford
Summer School Deadline

(Logos - Berkeley and Stanford)

Tomorrow is the last day to apply for the Berkeley-Stanford Summer School on Synchrotron Radiation and Its Applications.

The course will run June 26-30 and will be based at the U.C. Berkeley campus. Lectures will cover the process, technologies, and applications of synchrotron radiation, including the basics of extreme ultra-violet, soft x-ray, and x-ray radiation. The class will visit the Stanford Synchrotron Radiation Laboratory and Livermore's Advanced Light Source.

The U.C. Berkeley extension course offers space for forty graduate students. Course details, including lectures, costs, optional housing, and application guidelines, are available online.

Electrical Safety Tip:
Stay Grounded!

(Image - Electrical Safety) Grounding electrical equipment prevents lethal shocks. It is critical for an accelerator research facility like SLAC to have an effective and well maintained grounding web. The main component to the ground network is copper cable that can be found attached to cable trays and welded to building columns. Only approved connectors should be used to attach the cable to trays, racks and other devices. An installation is only complete once grounds are connected. 

All buildings, cable plants and equipment racks must be properly grounded. Do not disconnect grounds without proper authorization, and be sure to restore them. Your safety depends on it.

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