After months of winter hibernation, the Large Hadron Collider is once again smashing protons and taking data. The LHC will run around the clock for the next six months and produce roughly 2 quadrillion high-quality proton collisions, six times more than in 2015 and just shy of the total number of collisions recorded during the nearly three years of the collider’s first run.
Princeton University researchers are significantly involved in one of LHC's particle detectors, the Compact Muon Solenoid (CMS).
- James Olsen, professor of physics and a member of the High Energy Experiment group at Princeton, is the CMS physics co-coordinator, with Luca Malgeri of CERN. Together they oversee the activities involved in making sure the results of the experiment are correct and the best that can be produced.
- Daniel Marlow, the Evans Crawford 1911 Professor of Physics, leads work on the pixel luminosity telescope, which counts particles and allows the estimation of the rate at which protons are colliding. The project is a collaboration with Rutgers University, Vanderbilt University and the University of Tennessee.
- Christopher Tully, professor of physics, leads work on the hadron calorimeter system, which measures the energy of the particles.
- Pierre Piroue, the Henry DeWolf Smyth Professor of Physics, Emeritus, has been heavily involved in the CMS over the last decade.