Jefferson Lab Weekly Briefs March 19, 2014
Jefferson Lab Weekly Briefs
March 19, 2014
Hall A is prepared for the first beam in the hall since the Long Shutdown. A short run is planned for the middle to end of March to check that all systems are fully operational. Both High Resolution Spectrometers will detect scattered electrons, and it is anticipated that liquid hydrogen as well as solid targets will be utilized.
Remember to submit your papers for approval to the Jefferson Lab Publications database.
Center for Theoretical and Computational Physics
A new analysis from the Jefferson Lab Angular Momentum (JAM) Collaboration investigates the behavior of spin-dependent parton distribution functions (PDFs) at large parton momentum fractions x. The study explores the constraints from existing deep-inelastic scattering data, and from theoretical expectations for the leading x → 1 behavior based on hard gluon exchange in perturbative QCD. In addition, it quantifies the reduction in the PDF uncertainties that may be expected from future high-x data from Jefferson Lab at 12 GeV.
Some of the tasks that the Metrology group (Alignment and Magnet Measurement) have completed over the past few weeks are:
JLab Calendar of Events
Environment, Safety, Health and Quality
Driving Safely in Wet Weather
The National Safety Council offers safe driving tips for wet weather. Everyone thinks they know how to drive in all kinds of weather, but if you have not driven much in wet weather or in heavy rain, then maybe this quick refresher will help.
To prevent skidding on wet roads, drive slowly and carefully, especially on curves. Also, steer and brake with a light touch, maintaining mild pressure on the brake pedal. If you find yourself in a skid despite careful driving, be sure to remain calm and ease your foot off the gas, while carefully steering in the direction you want the front of the car to go. Be prepared to turn the steering wheel again and again until the front of your car is traveling in a straight line. If your car has anti-lock brakes (ABS), brake firmly as you steer into the skid. If you don’t have ABS, avoid using your brakes.
To avoid hydroplaning, keep your tires inflated correctly and maintain good tire tread, slow down and avoid puddles; and try to drive in the tire tracks left by cars ahead of you. If you find yourself hydroplaning, do not brake or turn suddenly. Ease your foot off the gas until the car slows and you can feel the road again. If you need to brake, do it gently with light pumping actions. If your car has anti-lock brakes (ABS system), then brake normally.
Computing and Networking Infrastructure
BlueJeans Videoconferencing Now Available; Training Offered
Windows XP Systems Require Upgrades By April 1
TED Building Entrance Closed Thursday and Friday
2014 Annual T-Shirt Design Contest Ends Friday
Pressure Systems Awareness Training Offered
Student Projects, Volunteer Mentors Needed for High School Interns
Tracking Thomas at Jefferson Lab
Jared Martin correctly guessed the location for March 12. An honorable mention goes to Dick Owen. 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.|