Jefferson Lab Weekly Briefs
February 13, 2013
12 GeV UpgradeProgress continues on the detector and tagger equipment for Hall D. Some 90 percent of the light guides for the Hall D Barrel Calorimeter have arrived from the University of Santa Maria and are being attached to the calorimeter modules. The full shipment of the light monitoring system that goes with them arrived from the University of Athens. The lead-glass calorimeter is being stacked into its support frame by a group from Indiana University. The Central Drift Chamber is having the gas manifold added at Carnegie Mellon University prior to undergoing full checkout. The fourth package of the planar drift chambers is being assembled. The production FADC-250 modules for reading out the two calorimeters are complete, and more than 90 percent have been tested at the University of Massachusetts. The first articles of the FADC-125 modules have arrived, as have the first F1TDC modules. Florida State University has begun assembling the Time-of-Flight wall. The tagger magnet has been delivered and is being assembled. The cool-down of the solenoid magnet has started, with the magnet now at liquid nitrogen temperature. Further cooling to liquid helium temperature awaits completion of some work on the cryogenics compressors.
PhysicsResearch Assistantship Offered
JLab is seeking candidates for a research assistantship. The program will sponsor a minority undergraduate student to work on projects that are part of the lab’s research program or directly related to the scientific or engineering aspects of the research program. This assistantship is funded by the JSA Initiatives Fund and will provide funds to support the student at the university during the 2013-2014 academic year. Nominations must be submitted by the faculty sponsor before the student may apply. Deadline for applications is April 5. Faculty sponsors may obtain more information and submit their nomination online.
Free-Electron LaserThe FEL team is hosting two graduate students from the University of Guanajuato in Mexico, who will be at the lab for six months on a scholarship funded by the Mexican Science Council. They will be learning about accelerator physics and associated technical/engineering aspects.
Activities for the new injector development have decreased significantly due to funding issues. However, some activities continue at a minimum level. For example, the other half of the gun stainless steel electrode is being hand polished with 600 grit sand paper. Engineering labor will also be kept at a minimum but sufficient to complete the design and drawings for the gun electrode support assembly. The components for the puck engagement mechanism vacuum test are at hand and will be sent to the production chemical room next week for ultra-high voltage cleaning. Afterwards, the system will be assembled and tested in Lab 3A.
EngineeringOver the past few weeks, the Alignment and Metrology group has:
Treat Your Valentine to Lunch at the Quark Cafe
Come Out and Play on the JLab Softball Team!
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.
Crystal Baker correctly guessed the location for Feb. 6. Honorable mentions go to Chris Curtis, Paul Vasilauskis, Debra Brand, Monty Lehmann, Harry Fanning, Dennis Merritt, Michael McCaughan and Dick Owen. Check out the Tracking Thomas webpage for a better view of his last location and this week's new mystery photo.
Environment, Safety, Health and QualityHand Sanitizer Available
To minimize the spread of flu this season, JLab's ESH&Q Division has purchased bottles of liquid hand sanitizer for staff and users for disinfecting hands. Bottles of hand sanitizer are available in three sizes:
Computing and Networking Infrastructure
CNI Maintenance Day, Feb. 19, 5-10 p.m.
There will be a maintenance period on Tuesday, Feb. 19, 5-10 p.m. Many systems will be affected during this time:
Java 1.6 End-of-Life Preparations
The 1.6 version of Java will no longer be supported or updated by the end of this month. In anticipation of the end of this support, the CNI group is planning to push out Java 1.7 to all Windows systems at JLab on the evening of Feb. 19. During this update, the group will also remove version 1.6 and earlier versions of Java, as they are no longer supported and pose a security risk to the site. If you have any questions or concerns, contact the IT Helpdesk, x7155.
Computer User Account Audit
The annual Computer User Account Audit will begin on Monday, Feb. 18. All supervisors and sponsors of users with computer accounts at JLab are required to review and re-authorize these accounts. This audit is a critical part of maintaining an appropriate level of cyber security at JLab. If you sponsor someone with a computer user account at JLab, you will receive an email on Feb. 18 with information on how to complete your user audit. If you have any questions or concerns regarding the audit, contact Jessica A. Perry, x7262.
JLab Calendar of EventsFeb. 25: Safety Shoe vendor onsite
March 2: Virginia Regional Middle School Science Bowl
March 5: Science Series: Guesstimating
March 6: Colloquium and Public Lecture
March 13: Colloquium and Public Lecture
March 17-19: C-REX Workshop