Jefferson Lab Weekly Briefs June 12, 2013
Jefferson Lab Weekly Briefs
June 12, 2013
12 GeV Upgrade
The Accelerator Readiness Review (ARR) team has been identified and chartered. The ARR team will include both internal and external reviewers. The ARR process evaluates the readiness of the people, procedures and equipment to safely carry out the commissioning and routine operation of the accelerator. The ARR for the 12 GeV upgrade will be a phased process, starting with the commissioning of the accelerator as we usher in the 12 GeV era. The first review module is tentatively scheduled for August 2013.
Electrical Engineering Systems has been engaged with accelerator recovery and installation on many fronts over the last six weeks.
The EESRF (Radiofrequency or RF) group has been supporting C100 cryomodule commissioning and the recovery of original C25 and C50 cryomodules. This work involves restoring the operation of high-power and low-level RF electronics following a year-long shutdown. Since April, four new 12 GeV RF systems have been commissioned or are nearing the completion of initial RF turn on and check out. Only two remain to finish out the RF construction work. The two are waiting for reworked waveguide circulators to be delivered. The circulator vendor visited Jefferson Lab for a week to evaluate an improved tuning process that cannot be done at his home facility. On the procurement front, the bid package for new RF separator solid state amplifiers has been released, and the first delivery of klystrons for the injector RF upgrade has been received.
The EESDC (DC Power Systems) group has installed several miles of new cable, reconnected about 500 magnets and begun performing quality assurance checks on the completed work. The first 40 of the 275 new 20 Amp trim power supplies are being checked as they are delivered and then installed into the accelerator. Work continues on refurbishing shunt chassis and 10 Amp trim cards. Cable terminations and AC power connections for the new trim racks are in progress, as well.
As magnets and beamline components are installed, the EESIC (Instrumentation and Controls) group is turning on and checking out vacuum monitoring and controls hardware. System testing of the new stripline beam position monitor production circuit boards is in progress. A quotation request for the assembly of the full production units is now in procurement. The new stripline BPM cans have been delivered and installed on girders.
The EESSS (Systems Support) group has been involved in many areas of the work listed above. Electricians are hooking up trim racks, pulling cable for the Hall D Tagger area for Personnel Safety System hardware, preparing for beam switchyard cable and panel box installation, and configuring plug strips for EESIC racks. The Fabrication Shop has been building boards for 12 GeV YA magnet power supply controls, a temperature readback chassis for tunnel environmental monitoring, assembling wiring harnesses for quad magnet girders, and building an intermediate frequency (IF) receiver board for BPM's.
Facilities Management and Logistics
Desk Delivery of Office Products
JLab Calendar of Events
June 17: Safety Shoe Vendor onsite
Environment, Safety, Health and Quality
Keeping Young Visitors Safe At Home
Inside: Did you remove the medicines off the counters, sinks or bedside tables? How about the cleaning products under the kitchen or bathroom sink? Do you know if your house plants are poisonous?
Outside: Lawn and garden pesticides and weed-killers, lighter fluid for the grill and similar products should be secured. How is gasoline for your lawn equipment stored - can they open up the container? Are tools, especially sharp-edged utensils, secured so they don't fall or can be used by children?
If you look around your house, garage and yard, you may see many hazards not listed above. Remember that inquisitive children can get into the darnedest places - take a few moments now to protect them.
Computing and Networking Infrastructure
JLab Computer Systems Maintenance Period, Tuesday, June 18, 5-7 p.m.
Personal Dosimeter Change Out Set for Monday, July 8
Last 12 GeV Upgrade Cryomodule Moved to Tunnel
Jefferson Lab Land Use Plan Posted
New Jefferson Lab Powerpoint Templates Available for Use
Tracking Thomas at Jefferson Lab
Buddhini Waidyawansa, Josh, Magee and Samika Hawkins correctly guessed the location for June 5. Honorable mentions go to DeAnn Maddox, Susan Brown, Debra Brand, Michael Haddox-Schatz, Tim Whitlatch, Narciso Gomez, Pashupati Dhakal, Dan Moore, Kim Kindrew, Alyssa Henderson, Marty McHugh, Andy Kowalski, Jim Follkie, Cameron Nickle, Jonathan Trexler, Ron Bartek, Carl Zorn, Jodi Patient, Dick Owen and Ani Simonyan. Check out Tracking Thomas on flickr 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.|