SLAC Today is available online at:

In this issue:
The Dish is Alive and Tracking
Safety Today: Shoulder the Pain
It's Baaack: DST 2007 Causes Y2K Concerns
Safety Seconds
Correction: Blood Drive February 21

SLAC Today

Tuesday - February 13, 2007

Ivan Linscott of Stanford's Radio Science Group stands at the Dish.
(Click on image for larger version.)

The Dish is Alive and Tracking

Across the street from the Alpine Gate and up a cow-studded hill, the Dish is one of SLAC's nearest scientific neighbors. The landmark 150-foot-wide reflector antenna still sends and receives radio waves to probe the Milky Way while it checks on satellites and spacecraft.

Entering the control room tucked beneath the metal lattice bowl is like stepping back in time to the early days of SLAC. Both facilities were built in the early 1960s, and the Dish still uses an antique klystron to generate the UHF-frequency waves that it transmits.

"We can move the receiver toward the center of the galaxy in a minute," said Ivan Linscott of the Radio Science Group at Stanford.  Read more...

(Column - Safety Today)

Shoulder the Pain

(Photo - Alison Drain w/box)Baseball players aren't the only ones who suffer from shoulder injuries. Damaging your shoulders from every day tasks is easier than you might think.

Shoulder injuries primarily occur from overuse or from falling on an outstretched hand. The Medical Department has seen overuse injuries in employees who work for prolonged periods with their hands raised. To reduce your chances of sustaining a shoulder injury, consider the following precautions:

Avoid working for extended periods with your arms in an awkward position. Rearrange things if necessary.

If you have a pre-existing shoulder problem, avoid activities that may aggravate your condition.

Learn and practice exercises that can improve your shoulder flexibility and strength.

Pay attention to what you are doing—especially with regard to slip, trip and fall hazards.

Safety Seconds

In yesterday's edition, I asked if you could identify a unique safety rule that, if broken, will almost certainly result in debilitating injuries or death. Climbing Mt. Everest from the south side, you leave at midnight and have until 2:00 p.m. to reach the summit. At 2:00 p.m., no matter where you are, you must turn around or you will die for any number of reasons. Every year some climbers still ignore this rule—and die.

Correction: Blood Drive
on February 21

(Logo)Yesterday's edition of SLAC Today incorrectly announced that the lab would host a blood drive this Wednesday. The drive will actually take place next week, on Wednesday, February 21.

It's Baaack: DST 2007
Causes Y2K Concerns

In August 2005, Congress passed the Energy Policy Act, which changes the dates of both the start and end of Daylight Saving Time (DST). This law goes into effect in 2007, and as a result DST will start three weeks earlier, at 2:00 a.m. on the second Sunday in March, and will end one week later, at 2:00 a.m. on the first Sunday in November.

Some devices that automatically adjust for DST need to be updated for this change. This includes cell phones, PDAs, fax machines, switches, routers, network time protocol appliances, private branch exchanges and industrial and scientific control systems. Without this update, many devices or systems will be wrong twice: once when they fail to change to DST on the correct day, and again when they change to DST on the old date. 

SCCS teams are working to update central and distributed services to correctly deal with this change. The database, file, e-mail and applications servers are being updated to reflect this DST change, so we expect little or no impact for those types of use. Centrally managed desktop systems are also being patched by automatic mechanisms.

Users with non-centrally managed systems, especially laptops, will have to correct their own systems. Desktops or laptops with incorrect times may be unable to authenticate to central servers until they are corrected.  Read more...

Events (see all | submit)

Access (see all)

(see all | submit)

 Lab Announcements

Community Bulletin Board

News (see all | submit)

dividing line
(Office of Science/U.S. DOE Logo)

View online at