Jefferson Lab Weekly Briefs
August 14, 2013

Physics

Hall C will host the Hall C Summer Workshop Aug. 15-16.

Center for Theoretical and Computational Physics

Elastic electron scattering measures the transverse spatial densities of charge and magnetization in the proton and neutron, which are expressions of their microscopic quark structure governed by Quantum Chromodynamics, the fundamental theory of strong interactions. Recent theoretical work has shown that the transverse densities in the nucleon's periphery result from long-range pion exchange forces and can be computed systematically using modern methods of effective field theory. This new approach gives a precise meaning to the notion of the nucleon's "pion cloud," explains the properties of the peripheral densities from first principles, and relates them to other structures measured in high-energy inelastic scattering experiments.

JLab Calendar of Events

Aug. 15-16: Hall C Summer Workshop
Aug. 19: Safety Shoe vendor onsite
Aug. 19-20 SOLID Collaboration Meeting
Aug. 19-22: Accelerator Readiness Review
Aug. 20: American Red Cross Blood Drive
Sept. 2: Labor Day holiday, Lab closed
Sept. 9: Safety Shoe vendor onsite
Sept. 11: Standard High & Ultra-High Vacuum Seminar
Sept. 23: Safety Shoe vendor onsite

Environment, Safety, Health and Quality

Texting While Driving Now Illegal in Virginia
On July 1, the Commonwealth of Virginia enacted a new law to help prevent collisions caused by distracted driving. Last year, more than 20 percent of all crashes in Virginia - totaling 28,112 - were attributed to driver distractions; those crashes resulted in 174 deaths and almost 17,000 injuries. The top three driver distractions were: drivers not having their eyes on the road, fatigue and cell phone use. Nearly 1,700 crashes involved drivers using a cell phone or texting while operating a motor vehicle. Most distracted driving crashes involved those 21 to 35 years old and occurred between noon and 6 p.m. on Thursday, Friday and Saturday.

Texting or reading text messages while driving is now a primary offense, meaning that law enforcement can now stop you specifically for this offense. The new law also has increased penalties: a conviction will carry a $125 fine for the first offense and $250 for the second or subsequent offenses. Commercial driver license holders can be fined up to $2,750 for texting while driving or while stopped in traffic in a commercial vehicle.

For more about the dangers of distracted driving, see this documentary.

Computing and Networking Infrastructure

IT Maintenance Period Tuesday, Aug. 20, 5-10 p.m.
The CNI systems team is planning a maintenance period for 5-10 p.m. on Tuesday, Aug. 20. During this time, all MIS applications will be unavailable while system patches and updates are installed. The cc.jlab.org web site will be unavailable while a new server is installed. Linux and Windows patches will be released to all systems. Plan on rebooting your desktop system to finalize the patch installation on Wednesday or Thursday. In addition, updates will be released to Firefox and Thunderbird applications. As always, contact the IT Division Helpdesk, x7155, if you have any questions or concerns.

Announcements

Red Cross Blood Drive Set for Aug. 20
The next American Red Cross Blood Drive is scheduled for Tuesday, Aug. 20, 10 a.m.-4 p.m. in CEBAF Center, Room F113. New and repeat donors are encouraged to attend. Appointments and walk-ins are welcome. To schedule an appointment, contact Johnie Banks, x7539. The linked page lists all eligibility requirements.

TIAA-CREF Onsite Individual Counseling Sessions
TIAA-CREF will be offering Individual Counseling Sessions, where you can discuss your personal financial situation with a TIAA-CREF consultant on a confidential basis. They will be available to discuss how to help you achieve your financial goals by investing in financial solutions such as mutual funds, brokerage, life insurance and annuities. The sessions will be offered Friday, Sept. 13, in Support Service Center room 21. To schedule an appointment, call TIAA-CREF at (800) 732-8353, Monday through Friday, from 9 a.m.-8 p.m.

Tracking Thomas at Jefferson Lab
Little Thomas is visiting all corners of the Jefferson Lab campus. If you can identify his location this week, email Kandice Carter with your guess. Guesses are accepted through Friday.

Marcy Stutzman and Brita Hampton correctly guessed the location for August 7. Honorable mentions go to Narciso Gomez, Casey Heck, Ryan Bodenstein and Mark Weihl. Check out Tracking Thomas on flickr for a better view of his last location and this week's new mystery photo.

JLab Weekly Briefs is an ongoing publication providing information on the status of safety, accelerator operations, experiments, free-electron laser, reviews, upcoming activities and special events. Deadline for submission is every Tuesday by 10 a.m. Submit new items to: Public Affairs or contact Kandice Carter at x7263.