Physics

Remember to submit your papers for approval to the Jefferson Lab Publications database.

Last week's RIM Trivia Question
The correct answer to last week's Records and Information Management (RIM) Month question is ARPANET. Congrats to Deb Magaldi, who was randomly selected from all of the correct answers. That's it for this year. Look for more RIM trivia next April. For answers to any record keeping and information management questions, feel free to contact Kim Edwards at kindrew@jlab.org.

Pick Up a Free Book!
Information Resources has added new library books to the free book cart. Remaining books will be disposed on June 1. See the list here.

Center for Theoretical and Computational Physics

One fascinating aspect of hadrons is the close connection between their internal structure and their excitation spectrum. Recent theoretical work has studied the effect of the Delta resonance on the nucleon's large-distance structure, which results from the generation of a "pion cloud" and can be calculated using methods of chiral effective field theory. It is found that the Delta resonance has a substantial effect on the nucleon's charge and magnetization densities, confirming general predictions of Quantum Chromodynamics in the so-called multicolor limit.

Jefferson Lab Calendar of Events

May 16-19: Precision Radiative Corrections for Next-Generation Experiments workshop
May 23-26: Service Award Ceremonies
May 30: Memorial Day holiday, Jefferson Lab closed
May 30- June 18: Hampton University Graduate Studies Program
June 20-22: Users Group Workshop and Annual Meeting

Environment, Health, Safety and Quality

Safety Configuration Management
Jefferson Lab relies on employee vigilance and workplace controls to protect worker health and safety. Some workplace controls are fairly simple; machine guards, for example, are designed to keep fingers from rotating blades. Others are more sophisticated, like the Personnel Safety System (PSS), designed to keep people and accelerator beams well separated. When a device, system or process is required to be in place before accelerator beam can be delivered, it is referred to as a Credited Control. For a detailed listing of Credited Controls, see Accelerator Safety Envelope.
 
Because Credited Controls keep accelerator hazards to an acceptable level, they are designed, documented, installed, calibrated, operated and maintained according to strict procedures. These procedures ensure that the configuration of the device, system or process is carefully managed such that it functions as designed with the intended reliability. Configuration Management (CM) is an important principle in the life-cycle of any engineered product and is the key to engineered safety systems. At Jefferson Lab, there are levels of CM based on the intended use of an engineered product. The PSS, for example, has the highest level of CM.
 
It is important to understand how CM is applied to any device, system or process with which you are involved, whether that involvement is in the design phase, the installation phase, or the operation and maintenance phase. The Configuration Management Governance Procedure provides site-wide guidance on CM applicability and expectations. It applies to all Jefferson Lab systems. For questions on CM, contact Steve Smith at sjsmith@jlab.org or x7007.

Announcements

Provide Your Feedback on the 2016 Jefferson Lab Open House
The efforts of hundreds of volunteers, exhibitors and subcontractors enabled more than 12,000 visitors to experience the science, technology and research that Jefferson Lab has to offer. These record-breaking crowds stretched the site to the limits, and we appreciate all of the efforts that our volunteers put into helping the crowds negotiate the site. We're looking for your feedback on your Open House experience, so that we can improve it for everyone for future events. The anonymous survey is available via SurveyMonkey. It's available to anyone associated with Jefferson Lab staff, Users, family or friends who volunteered for or attended the event.

Pressure and Vacuum System Owner Training SAF 130C Offered on May 10
SAF 130C, Pressure Systems Owner Training, is a required course for all vacuum and pressure system owners and design authorities. It covers general safe operation and maintenance techniques, as well as the specific requirements of system owners defined in the new Pressure and Vacuum System Safety Supplement. Others who might benefit from the training session include operators or supervisors of technicians working on pressure systems. Register now via Jefferson Lab's Learning Management System for SAF130C, Pressure Systems Owner Training, which is scheduled for Tuesday, May 10, at 1 p.m. in the CEBAF Center auditorium. The class is being led by Tim Whitlatch, Hall D Chief Engineer.