Workers install a section of the pre-shower calorimeter, or PCAL, which is part of the CLAS12 detector package in Jefferson Lab’s Experimental Hall B. The new equipment is being installed for the 12 GeV Upgrade project.

<<< Installation of PCAL in Hall B.

Work on the 12 GeV Upgrade project continues at Jefferson Lab. Shown here is the new CLAS12 detector in Experimental Hall B after the recent installation of the pre-shower calorimeter, or PCAL.  

<<< Installation work on Hall B detector.

Technicians position refurbished F100 cavities in Jefferson Lab’s clean room. Later, the cavity string was moved out of the clean room for installation into a cryostat. The F100 cryomodule refurbishment was financed by the Commonwealth of Virginia for installation in the lab’s Free-Electron Laser.

<<< Refurbished F100 cavities.

An overhead view of Hall D, the newest experimental hall at Jefferson Lab, where progress is being made installing new equipment. Taking shape is the detector to be used by the GlueX physics collaboration. The large red and green equipment is the solenoid. The long cylindrical objects to the left of the solenoid are the drift chambers.

<<<< Inside Jefferson Lab's Hall D.

Jefferson Lab engineer Paul Brindza holds up samples of a new system of concrete products designed to stop neutrons and other particles from harming sensitive scientific computers and detectors. The new system was designed by Brindza and fellow Jefferson Lab engineer Bert Metzger. The new patented and patent-pending products are being installed in the lab’s Experimental Hall C. You can read more here.

<<< Paul Brindza shows samples of a new boron-rich concrete system.