SLAC Today is available online at:
In this issue:
Pushing for Higher Gradients
A Rat Rod That "Flies"
Major Delays on Sand Hill and at SLAC Gate
Building 50 Parking Lot Closed Tomorrow

SLAC Today

Friday - July 13, 2007

Sami Tantawi holds a test cavity designed at SLAC and built at KEK that will soon be tested here for its ability to sustain high acceleration gradients. (Click on image for larger version.)

Pushing for Higher Gradients

Like a boxer eating calorie-dense foods to get to the top of his weight class before a match, particles pumped up on high acceleration gradients pack more power into every collision.

A new collaboration, hosted by SLAC, is working on ways to boost acceleration gradients—the measure of how quickly particles amass energy—to unprecedented levels.

The U.S. Collaboration on High Gradient Research for Future Colliders began almost a year ago. Already, the program has tested klystrons and developed prototype accelerator cavities that can add more than 100 mega-volts of energy per meter (MV/m) to a bunch of particles. The goal is to develop gradients of 100 to 200 MV/m. In contrast, SLAC's linac has a gradient of about 17 MV/m, and the proposed International Linear Collider hopes to achieve up to 35 MV/m.  Read more...

A Rat Rod That "Flies"

(Photo - Rat Rod)
Jeff Jones with his "rat rod."
(Click on image to see the inside of the car.)

With wrenches serving as a steering rod and a gas pedal, a screwdriver gear shifter, coca-cola trays for floorboards, and a cowbell dangling from the front frame, SLAC metals worker Jeff Jones has a unique ride to work. The "rat rod" that Jones spent over a year building is an example of a growing style of homemade cars pieced together from anything and everything imaginable.

"I can't build a 50,000 dollar hot rod," said Jones as he revved his rat-rod's engine. "But she can fly."

Jones has all the skills necessary to build custom cars. He fills all of SLAC's custom sheet metal orders and owns a small car shop called Jones' Customs. His eye-catching rat rod is a 1929 Model A pick-up truck sporting a small block Chevy 350 engine. The car still needs front brakes, a windshield, and a working headlight, but completely finished or not, Jones' rat rod runs smoothly and gets plenty of attention on the street.

"I get a lot of looks, thumbs-up, and honks on the road," said Jones, who has occasionally driven his creation to work all the way from Morgan Hill, a trip of 50 miles.

Jones' creation also gained attention at a recent hot-rod event where it won a Goodguys Rod and Custom Association Suede and Chrome award. It has also won a few races, besting a 2002 Chevy Camaro and a Harley-Davidson.

"She can get up to 120 miles per hour before the front wheels start to wobble," said Jones with a devilish grin. "But she can go even faster than that."

Major Delays on Sand Hill and at SLAC Gate

Next week will bring major construction-related delays to Sand Hill Road. On Monday, crews will close the left turn lane into SLAC's Main Gate; on Wednesday both inbound lanes through the Main Gate will be closed; on Thursday both outbound lanes will be closed.  More details on each of these closures follow.

Beginning around 12:00 p.m. on Monday, July 16, construction crews will close the left turn lane into the SLAC Main Gate from southwest-bound Sand Hill Road. The closure is expected to last several hours. Anyone entering SLAC from this direction is asked to continue on Sand Hill Road until the next intersection (Monte Rosa Drive), where they should make a U-turn and enter the SLAC gate from the northeast-bound lanes.

Next Wednesday, the resurfacing of Sand Hill Road will require the closure of the inbound lanes traveling through SLAC's Main Gate. Between 8:30 a.m. and 3:30 p.m., all traffic in and out of the laboratory will travel through the outbound lanes. This procedure will be reversed on Thursday to allow crews to resurface the street in front of the outbound lanes.

The City of Menlo Park expects significant backup on Sand Hill Road and through the Main Gate on these days.

Anyone entering or exiting the SLAC site is encouraged to travel through the Main Gate before 8:30 a.m. and/or after 3:30 p.m. on both Wednesday and Thursday of next week.

SLAC Today will publish more information as it becomes available.

Building 50 Parking Lot Closed Tomorrow

SLAC's Sun black box arrives tomorrow, causing the closure of the Building 50 parking lot and nearby areas.

The Sun computing Blackbox will be delivered to SLAC on Saturday, July 14. Between 6:00 and 10:00 a.m., the area around Buildings 50 and 50S—including the entire parking area—will be closed to all vehicle and foot traffic. Any vehicles left in the area will be towed.  Click here to see a map of the closed area.

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