Jefferson Lab Weekly Briefs May 29, 2013

Jefferson Lab Weekly Briefs
May 29, 2013

12 GeV Upgrade

All light guides for the Hall D Barrel Calorimeter (BCAL) have arrived from the University of Santa Maria, and more than two-thirds have been attached to modules. The BCAL light monitoring system, built by the University of Athens, is being added. The lead-glass calorimeter, FCAL, was stacked into its support frame by Indiana University. The Central Drift Chamber is undergoing a full checkout at Carnegie Mellon University prior to shipping to Jefferson Lab. The fourth (last) package of the companion planar drift chambers is being tested at Jefferson Lab. The production F1TDC modules are being tested at the University of Massachusetts. The first articles of the FADC-125 modules arrived and were successfully tested, and full production is now underway. Florida State University continues assembling the Time-of-Flight wall. The tagger magnet is now assembled in the tagger area. The University of Connecticut and The Catholic University of America, respectively, continue with assembling the tagger microscope and hodoscope, which are the detectors for the tagger region. The solenoid magnet has been cooled and tested to full current of 1500 Amps. It experienced a quench on May 1 and is now being re-cooled for final tests and mapping.

Free-Electron Laser

The FEL team held kickoff meetings for both the Los Alamos U24 undulator contract with Superconductor Technologies Inc. and the new 750 Megahertz buncher contract with Advanced Energy Systems, Inc. (Virginia funded). Both meetings went well with a minimum of action items resulting.

Center for Theoretical and Computational Physics

In a new paper, the Resonance Chiral Theory framework is used to compute form factors for electron-positron annihilation into π+π-π0 or π+π-η final states. The hadron production is simulated using the PHOKHARA 7.0 Monte Carlo event generator. This work will be helpful for phenomenological studies of the nonperturbative regime of QCD, and in particular for photon beam experiments at CLAS12.

    JLab Calendar of Events

    May 29-31: Jefferson Lab Users Group Annual Meeting
    June 3: Safety Shoe Vendor onsite
    June 4-5: Super BigBite Collaboration Meeting
    June 4-6: Heavy Photon Search Collaboration Meeting
    June 17: Safety Shoe Vendor onsite
    June 17-21: Program Advisory Committee Meeting (PAC40)
    June 24: Protecting Your IP Rights seminar

    Environment, Safety, Health and Quality

    Stay Alert and Minimize Distractions on Roadways
    With summer upon us, roadways will be very active with both increased traffic and construction or maintenance. The dangerous aspect of using cell phones or texting while driving has been covered, but one often forgets how far one travels in a few seconds. At 30 mph, a vehicle covers about 45 feet per second, so if you are distracted for three seconds, you have gone about 135 feet. At 70 mph on the highway, the vehicle has gone more than the length of a football or soccer field in those three seconds! Would you be willing to be blindfolded while driving on the Interstate for that distance? Probably not, so don't create a blind zone while looking at a cell phone or texting.

    Minimizing distractions are expecially important in the summer, with additional road work zones with highway workers just a few feet off the edge of the road or people crossing Jefferson Lab's roads who maybe also be texting or talking and are not focused on traffic. Stay focused on the more important task: keeping your vehicle on the road and avoiding things in your lane.


    Virginia Sales Tax Holiday for Hurricane Preparedness Supplies
    This week, Virginia is waiving the sales tax on many items that are useful for weathering summer storms and hurricanes. A shortlist of useful links regarding the holiday is available on Jefferson Lab's We Hear That page, and more information can also be found on the Virginia Department of Emergency Management's website.

    Check the Jefferson Lab Lost and Found for Your Lost Stuff
    The CEBAF Center Reception Desk doubles as the Jefferson Lab Lost and Found collection point. If you’ve lost or misplaced an item over the last few months, visit the Reception Desk to see if it has been turned in to Lost and Found. A range of items are currently being held, including shoes, jackets, umbrellas and glasses. Last week, an electric drill with augur attachment was turned in. All older items currently in the Lost and Found will be disposed of on June 10. To see what is in the Lost and Found, visit the CEBAF Center Reception Desk during normal business hours, Monday through Friday. ​A listing of items is also available in the Classified Marketplace.

    Summer Rental Car Discounts For Jefferson Lab Employees
    Enterprise Rent-A-Car and National Car Rental offer Jefferson Lab employees discounted rates for personal use. Contact Veronica, x7269, at CI Travel for details. Mention reference number NA21008, so the discounted rate will be reflected in the reservation she makes for your summer rental.

    JLab Cafeteria May Be Congested, May 29-June 6
    A number of events will take place at Jefferson Lab over the next week, so anticipate intermittent congestion in the Quark Cafe through Thursday, June 6. More information about these and other events is available on the calendar. To avoid lunch time congestion, Staff Services suggests using the cafeteria before noon or after 1 p.m. when feasible.

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

    Marcy Stutzman and David Bigelow correctly guessed the location for May 15. Check out the Tracking Thomas webpage 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.