Jefferson Lab Weekly Briefs
April 9, 2014
12 GeV UpgradeThe concrete shield house for the Hall C Super High Momentum Spectrometer has been constructed on the new support carriage and is being outfitted with specialized boron carbide and lead shielding panels. Work continues to outfit the platform itself with electrical, cryogenic and other services in anticipation of the arrival of the new magnets. The first two new magnets, the HB dipole and Q1 quadrupole, are now in the last stages of construction of the cold masses, which includes final welding of the helium vessels. Parts for the LN2 shield for the HB dipole have been test fit, and the vacuum vessel and support links for HB are ready. The thermal shield for Q1 has been delivered to the magnet vendor and will be attached next. The first double-pancake of the production coil for the Dipole magnet has been wound. Two more double pancakes are required to complete the first full Dipole coil. The vendor’s second winding station is being readied to start winding of the second Dipole coil in parallel with continuing the first coil. Very similar tooling and techniques will be used afterwards by the same vendor to fabricate the Q2 and Q3 magnets starting in the summer.
PhysicsJefferson Lab Published Journal Articles, March 31-April 6
Time To Celebrate Records & Information Month
April is Records and Information Management (RIM) Month. Each week in April, look in the JLab Weekly Briefs for the RIM Fact of the Week, followed by the Trivia Question of the Week. Correct responses via email are entered into a drawing for a Starbucks gift card! (Limit one prize per person). For more information, contact Kim Kindrew.
RIM Fact of the Week
Jefferson Lab uses the Department of Energy Records Schedules and the General Records Schedules of the National Archives and Records Administration (NARA) to assign retention and disposition of its records. Each person who is responsible for departmental records should be familiar with his or her particular records retention requirements. The schedules are available on the Jefferson Lab website.
RIM Not-So-Trivial Trivia Question of the Week
Congratulations to Chandra Gilchrist for correctly answering last week's question. Her name was randomly selected from 20 who gave the answer, "Arthur Andersen LLP." This week's question: According to the Department of Energy's R&D Records Schedule, raw data generally has a 10-year retention period. By contrast, this related type of data generally has a lengthier retention period, and may even be considered "permanent" if it relates to a highly significant discovery. All responses must be received at firstname.lastname@example.org by noon on Friday, when a drawing will take place of all correct answers. One person will win a Starbucks gift card! (Winner 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 PhysicsComputer simulations on a finite space-time lattice ("Lattice QCD") are a first-principles method of describing the internal structure of the proton and neutron on the basis of the fundamental theory of strong interactions, Quantum Chromodynamics. While they deliver increasingly accurate results for static properties and the excitation spectrum, such calculations face considerable challenges in predicting the quark and gluon momentum distributions measured in high-energy electron scattering experiments. At a recent workshop at the University of Maryland's Center for Fundamental Physics, researchers explored an innovative approach that would allow them to calculate these distributions more directly than was possible so far, by simulating cleverly designed virtual high-energy scattering processes on the lattice. If developed further, this approach may considerably extend the reach of Lattice QCD for nucleon structure measured with the Jefferson Lab 12 GeV Upgrade and other facilities worldwide.
JLab Calendar of EventsApril 15: American Red Cross Blood Drive
April 18-19: USQCD All-Hands Meeting
April 21: Safety Shoe vendor onsite
April 22: Colloquium & Public Lecture
April 22-23: APEX Collaboration Meeting
Environment, Safety, Health and Quality
Computing and Networking InfrastructureCNI Maintenance on Tuesday, April 15, 5-7 p.m.
On Tuesday, April 15, the IT Division will be conducting a maintenance period, 5-7 p.m. During this maintenance period, all MIS applications will be down while updates are applied to the backend servers. All systems will be back up and running no later than 7 p.m. The login servers (login.jlab.org) will also be updated and a slight configuration change made. Updated versions of Firefox and Thunderbird will be released to all CUE desktop systems. Also, Windows and Linux patches will be released to all desktops and servers. This may cause intermittent outages to services, but all outages will be complete by 7 p.m. Also, plan on rebooting any desktop systems (Windows and Linux) on the Wednesday or Thursday following the maintenance day to complete patch installation. If you have any questions or concerns, contact the IT Division Helpdesk, x7155.
Office 2003 End of Support
Microsoft's support of Office 2003 ended on April 8, along with Windows XP. If you are still using Office 2003, plan now to update to a newer version of Office (2007 or 2010). There are tools available to assist with this upgrade. If you have any questions or concerns, contact the IT Division Helpdesk, x7155.
AnnouncementsRed Cross Blood Drive Set for April 15
The next American Red Cross Blood Drive is scheduled for Tuesday, April 15, 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.
April 2 Colloquium Available on YouTube
The colloquium presented on April 2, "Tools, Techniques and Technology Connections of Particle Physics," is now available for viewing on YouTube. Presented by Marcel Demarteau, High Energy Physics Division, Argonne National Lab, the colloquium illustrated the story of invention in particle physics and the interplay between different fields of science and society.
Annual Property Training & Validation Due April 18
Jefferson Lab’s annual Property Custodian Training and annual Property and Key Validations must be completed by Friday, April 18. During this period, all Jefferson Lab property custodians are required to complete their Annual Property Custodian Refresher Training (GEN 150) and then conduct their annual Property and Key Validations. If you have property or property validation process questions or concerns, contact the Property office at x7348, Monday – Friday, 8 a.m. - 4 p.m. or email email@example.com. Every person who has one or more Jefferson Lab keys must also validate each key issued to them. If you have any non-essential or non-functional lab keys, return them to Dennis Merritt, Mail Stop 28G. If you have questions about the key validation process, contact Dennis Merritt.
Tracking Thomas at Jefferson Lab
|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.|