Jefferson Lab Weekly Briefs
April 23, 2014

12 GeV Upgrade

Hall C continues to install shielding and other components in the Super High Momentum Spectrometer detector, as well as cryogenic connections to the SHMS carriage. Installation and commissioning work continues in Hall D, with all five major detectors now installed. The Tagger area is being prepared to receive beam with energy greater than 10 GeV to meet 12 GeV Upgrade project milestones. The goal is to complete Hot Checkout to permit 5.5-pass, tune beam to this area before the summer accelerator shutdown in May.


JSA Sabbatical and Research Leave Support at Jefferson Lab
The JSA/JLab Sabbatical and Research Leave Support Program enhances research opportunities for faculty through access to Jefferson Lab facilities and interaction with Jefferson Lab researchers and users, strengthens the teaching and research capabilities of universities through faculty involvement, and strengthens the research programs of Jefferson Lab by attracting "new blood" and integrating university faculty members in the lab's programs. JSA will award living expenses up to $1,500 per month for up to twelve months to qualified faculty members to relocate to the Hampton Roads area to conduct full-time research at Jefferson Lab while on an approved sabbatical or research leave. For eligibility and application information, see the JSA website. Application deadline in June 2.

Records and Information Management Month Fact of the Week
According to Jefferson Lab's Records Management Policy, GEN018kd, it is the responsibility of all Jefferson Lab employees, users and subcontractors to understand and follow the policy and its implementing procedures. Need to refresh your memory? You can find a link to the policy (GEN018kd) here.

RIM Trivia Question of the Week
The correct answer to last week's question was "St. Lawrence." Congratulations to the two randomly selected winners: Jodi Patient and Buddhini Waidyawansa. This week's trivia question: In the Star Trek Original Series episode "Court Martial," this character, who was the Enterprise's records officer, faked his death and framed Captain Kirk in order to get back at Kirk for ruining his career after a careless, yet deadly mistake. All responses must be received at by noon on Friday, when a random drawing will take place of all correct answers. One person will win a Starbucks gift card! (Winners will be notified via email no later than 5 p.m. Friday following publication. Limit one gift card win per person.)

Center for Theoretical and Computational Physics

The deuteron form factors and static deuteron moments are sensitive to the two-body interaction current of an isoscalar neutron-proton system, previously believed to be zero (except for possible exotic contributions unconstrained by the n-p interaction). However, recent precision fits to the n-p scattering data using the Covariant Spectator Theory required a new type of interaction that necessarily leads to large interaction currents directly related to the n-p interaction. In two new papers, these large currents have been uniquely determined and then used to predict the deuteron magnetic moment, which is found to be in good agreement with experiment.


The various groups in the Electrical Engineering Support department have directed their efforts toward completing installation and Hot Checkout of the accelerator systems required to transport beam through 5.5 passes in the linacs and on to the Hall D tagger dump. Significant work has gone toward final installation and testing of the box power supplies with the final PS needed for 5.5-pass running, achieving full power last week into a dummy load. All that remains is to commission the power supply into the magnet string in the tunnel. The Instrumentation & Controls group completed beamline instrumentation and controls installation in the 5C beam line all the way to the tagger dump. The dump cooling system was one of the last pieces requiring completion. The Safety Systems group has been working to complete and certify the enclosure interlocks that will allow equipment to be energized and beam transported to the dump. The Radiofrequency group has spent time bringing the new C100 South Linac RF zones up to 500 MV (100 MV per zone) operating gradients, as an ensemble, for a one-hour run, thus demonstrating the project performance goals. The North Linac RF C100 zones had previously demonstrated this performance.

All groups also have engaged in opportunistic maintenance and repairs during the downtime caused by the ground fault and vacuum breach when a ZA magnet failed in the northwest recombiner region. Magnet repair and a failure investigation is continuing nicely, with repairs expected to be completed later this week.

Finally, the entire Electrical Engineering Support department mourns the death of longtime colleague and friend Greg Arnold, who passed away unexpectedly April 9.

Facilities Management and Logistics

Jefferson Lab Parking Lots to Be Closed April 26-27 for Markings Painting
On Saturday, April 26, and Sunday, April 27, road traffic markings and parking lot markings are scheduled to be re-painted. If the weather conditions are not favorable that weekend, the work will be re-scheduled for the following weekend. Parking will be limited onsite to specific areas. For a list and updated map of available parking areas during the work, see the full announcement.

The subcontractor will provide traffic control to ensure the safety of its crews while also allowing traffic to continue to flow in and about the lab. Awareness of their presence as well as adhering to the traffic controls is required. See the full announcement for a linked pdf showing the scope of the project. All road traffic markings and highlighted parking areas are scheduled for re-painting. Thank you for your attention to this work.

Jefferson Lab Calendar of Events

May 7: JAG Annual Run-A-Round
May 17: JLab Open House: Accelerating Discovery
May 19: Safety Shoe vendor onsite
May 19-22: Program Advisory Committee, PAC41
May 26: Memorial Day holiday, Lab closed
May 27-29: Hypernuclear Collaboration Meeting

Environment, Safety, Health and Quality

Carbon Monoxide Hazards from Small Gasoline Powered Engines
With spring cleaning and yard work season upon us, we should be aware of some subtle hazards one may not think of while at home. Many people use gasoline-powered tools, such as high-pressure washers, fueled power trowels, floor buffers, pumps, compressors and generators in buildings. A dangerous byproduct of these tools is carbon monoxide (CO). CO can rapidly accumulate even in areas that appear to be well ventilated. Often, the CO builds up to dangerous or fatal concentrations within minutes. Examples of such poisonings include the following:

  • Concrete saw use in the CEBAF accelerator tunnel, and monitored by Industrial Hygiene, reached unacceptable concentrations of CO within about 10 seconds;
  • A farm owner died of CO poisoning while using an 11-horsepower, gasoline-powered pressure washer to clean his barn. He had worked about 30 minutes before being overcome; and
  • Five workers were treated for CO poisoning after using two 8 horse-power, gasoline-powered, pressure washers in a poorly ventilated underground parking garage.

While these examples are from workplace situations, similar uses and even smaller enclosed spaces occur at home. Many people believe that just opening a door and window is adequate ventilation, but it may not be. Generally, large volumes of dilution air, unless there is a local exhaust system at the source, is needed to minimize concentrations of CO.

Computing and Networking Infrastructure

Phone Maintenance Scheduled for Tuesday, April 29
The CNI group has phone maintenance work scheduled on Tuesday, April 29, 5-7 p.m. During the maintenance period, there will be a risk for a momentary interruption in phone service while maintenance work is performed and a new long-distance trunk is added to the system. If you have any questions or concerns about this work, contact the IT Division Helpdesk, x7155.


Take Our Daughters and Sons to Work Day is Thursday, April 24
The nationwide Take Our Daughters and Sons to Work Day is Thursday, April 24. Jefferson Lab has no formal plans for the day; however, Jefferson Lab parents/grandparents are welcome to bring their school-age children/grandkids to work for all or any part of the day. (School age is defined as 8-18 years of age, per the national Take Our Daughters and Sons To Work Day website.) A table in the CEBAF Center lobby (near the auditorium entrance) will have handout materials that may be of interest to students, and the cafeteria will have kid-friendly food on the menu that day.

A few laboratory rules to remember: Adults are responsible for their children while they are at the lab. Children are not permitted in work areas that are restricted or have limited access due to technical or safety considerations, such as Radiologically Controlled Areas (RCAs), construction sites, and any area where personal protective equipment (PPE) is required. Children are allowed escorted access on the Accelerator Site, as long as they stay out of the above-mentioned restricted areas. Children may not ride in lab golf carts. If you have any questions, contact your Division Safety Officer or ESH&Q liaison.

Document Shredding Truck to Visit Lab on April 28
The next scheduled visit by the Shred-It vendor truck will be Monday, April 28. The truck will be at Building 28, the Support Service Center, at 8:30 a.m. Small to moderate quantities of lab business sensitive documentation may be deposited in the five locked containers in Room 71. Three-ring binders, metal clips and clasps, plastic binding and cover materials must be removed from all documents before putting them into the holding containers. Staff from offices or work centers with large volumes of business sensitive documents should contact Mike Lewellen to make special Shred-It truck arrangements. The Shred-It truck visits the lab every four weeks.

Jefferson Science Associates Minority/Female Undergraduate Research Assistantship
Jefferson Lab is seeking candidates for a research assistantship. JSA will provide funds to support the student at the university during the 2014-2015 academic year. This project is supported by the JSA Initiatives Fund Program, a commitment from the JSA owners, SURA and PAE Applied Technologies. Initiatives Funds support programs, initiatives, and activities that further the scientific outreach, promote the science, education and technology of the Jefferson Lab and benefit the lab’s extended user community in ways that complement the lab’s basic and applied research missions. Nominations will be accepted through May 2. For more information, visit the website.

Registration is Open for the May 7 JAG Run-A-Round
Check your running shoes and sign up now for your competition bib. The 29th annual Jefferson Lab Run-A-Round event will be held Wednesday, May 7, 3-6 p.m. JLab staff, users, students, full-time contractors and immediate family members are invited to participate. Staff and users that participate in the run or that volunteer can receive a free 2014 JLab T-shirt. All runners and walkers must register online to be eligible for prizes. Online registration is open through 5 p.m. on Tuesday, May 6. Register yourself and your family members who are planning to participate today at the link on the JAG website.

Help Make the Run-A-Round a Success
The success of this event depends heavily on participation and volunteer support. Volunteers not participating in the race will receive a free 2014 JLab T-shirt. The best slots fill up fast, so sign up today at the link on the JAG website.

TIAA-CREF Individual Counseling Available by Appointment
TIAA-CREF will be offering additional Individual Counseling Sessions in June. The consultant 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. Sessions will be offered on Thursday and Friday, June 19-20, 8:30 a.m.-5 p.m. in Support Service Center Room 21. To schedule an appointment with a TIAA-CREF Individual Consultant to discuss your plan and options for managing your retirement savings, call TIAA-CREF at (800) 732-8353, Monday through Friday, from 9:00 a.m. to 8:00 p.m. (ET).

Student Projects, Volunteer Mentors Needed for High School Interns
Six outstanding high school students have been selected to participate in the lab's High School Summer Honors Program, which will be held June 23 - Aug. 1. Critical to the success of their internship experience are projects for the students and mentors who can oversee one or more students as they carry out their work. The students are currently in the 11th and 12th grades and have expressed interest in pursuing scientific and technical careers. Lab scientists, engineers and other technical managers who are interested in serving as a mentor to high-achieving high school students and have a project, or any number of small projects that can be accomplished over the summer, are asked to contact Brita Hampton with a description of the work to be assigned. If you have questions email or call her at x7633. She needs ideas or proposals by May 1.

Tracking Thomas at Jefferson Lab
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.


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.