LHC Detector Construction at Duke

Thursday, July 12, 2012
Part of the ATLAS experiment at CERN was built here in the physics building at Duke. You can read more about the inner detector construction here and below you can also see several pictures of Duke personnel installing the detector at CERN, along with a picture of a Higgs candidate event passing through the tracker.  You can also read more technical information about the Transition Radiation Tracker (TRT) and its performance here.

Above, Figure 1: TRT construction team. Missing people are ByeongRok Ko (now at Korea University) and Vassilios Vassilakopoulos (now at Hampton University)  Top left: Jack Fowler (Engineer) inside the Atlas calorimeter where the TRT will be installed. Top right: Prof. Seog Oh and Jack Fowler working inside the experimental area. Bottom left: Dr. William Ebenstein working on the prototype module support structure. Bottom right: Dr. Chiho Wang in front of the installed TRT in the experimental area.

Above, Figure 2: TRT is being assembled. After the assembly, it is moved down to the experimental area. The outer diameter is about 2.1 meters (7 feet).

Above, Figure 3: A possible Higgs event registered in the ATLAS Inner Detector which consists of Pixel detector, Silicon detector and TRT. Each dot in the TRT represents a “hit” from a detector sensor called a straw tube as a charged track traverses the detector. The lines represent reconstructed tracks from the hits, and the towers outside the TRT represent the energy deposited in a calorimeter. The four straight lines moving out from the TRT region are muons (m) from the decay of a Higgs boson candidate, namely H0->Z0Z0->m+m-m+m-