Front Left to Right: David Stickland, Christopher Tully, Isobel Ojalvo, Kirk McDonald, Daniel Marlow, Pallabi Das, Stew Smith Back Left to Right: Andrew Loeliger, Stan Chidzik, James Olsen, Bert Harrop, David Lange, Peter Elmer, Kim Dawidowski (Group Admin) Assembling the DarkSide-50 dark matter detector in a cleanroom in Gran Sasso Underground Lab in Italy 1 / 7 Previous image Next image ︎ Contact: TBDPhone: Email:The goal of high energy physics is the understanding of the elementary particles that are the fundamental constituents of matter. The fabulous success of the Standard Model has given us a framework for the interpretation of most particle interactions, but it has also created a foundation from which we can begin to explore a deeper level of issues such as the origin of mass, the preponderance of matter over antimatter in the Universe, the identity of "dark matter," the physics of the Big Bang, and the microscopic structure of space-time.The most direct experimental path to the understanding of such issues uses particle collisions of the highest achievable energies. Following this path, Princeton physicists are deeply involved with the CMS experiment at the Large Hadron Collider (LHC) at CERN (Switzerland). Within the next ten years, the LHC will be upgraded to increase the number of particles per collision. Its successor, the High Luminosity-LHC (HL-LHC) will also require many upgrades to the CMS experiment. The Princeton CMS group is involved in research and development for many of the upgrades including the outer tracker, the MIP timing detector, the Level-1 trigger system, and computing through the IRIS-HEP software institute.The Princeton group is also active in neutrino oscillations (the reactor experiment at Daya Bay, China) and the search for WIMP Dark Matter using liquid argon scintillation/ionization detectors (in the Gran Sasso Underground Lab in Italy.)Princeton groups have also been previously been active in the area of CP violation with the BaBar and Belle experiments at the B Factories at SLAC (California) and KEK (Japan), respectively, and neutrino mixing with the Booster Neutrino Experiment, MiniBooNE, at Fermilab (Illinois) (see pictures). We are also taking part in research and development for a new type of accelerator, the Muon Collider/Neutrino Factory.Whatever the size of the experiment, the Princeton groups play leading or major roles in the collaborations, and graduate students have the opportunity and are expected to be at the center of the important hardware development and physics analysis. We have the facilities in the shops and assembly areas of the Elementary Particles Laboratory to design, build, and test components of experiments to be installed at accelerator labs elsewhere. The EP Lab shops and our state-of-the-art electronics-design facilities also support an active program in the development of detection and readout techniques for future experiments.During 2022 the Princeton HEP group has launched two Graduate Traineeship initiatives funded by the DOE, one on instrumentation and one on software/computing. News:Information regarding the Higgs Boson and Princeton's role in the discoveryJames Olsen: Perspective on the world's biggest particle collider coming online againProf. Chris Tully as part of DZero collaboration is awarded The 2019 High Energy and Particle Physics Prize of the EPS for detailed measurement of the top quark properties. Faculty Daniel R. Marlow Professor Emeritus Kirk McDonald Professor Emeritus Peter Meyers Professor Emeritus Isobel Ojalvo Assistant Professor James Olsen Professor of Physics Department Chair A. J. Stewart Smith Professor Emeritus Christopher Tully Professor of Physics Researchers Pallabi Das Gage DeZoort G. J. Peter Elmer Andre Frankenthal Kiley E. Kennedy Gillian Kopp Stephanie Kwan Yihui Lai David Lange Andrew Loeliger Luis Alberto Perez-Moreno Jim Pivarski Farrah Simpson David Stickland Andi Tan Vassil Vassilev Zhen Xie Graduate Students Hichem Bouchamaoui Wonyong Chung Mark Farino Bennett Greenberg Elliott Kauffman Haolin Liu Ashling Quinn Soohyun Yoon Photos Summer at CERN 2022 Adrian Pol, Abby Chriss, Brian Gitahi, Bennett Greeberg, Jae Sledge, Kodai Speich, Stephanie Kwan, Lucy Liu, Gillian Kopp, Soohyun Yoon, Pallabi Das, and Luis Perez-Moreno. Summer at Jadwin 2022 High Energy Experiment Group Summer 2022 HEP Group Photo Princeton July 2019 HEP Student Photos 2019 CoDaS-HEP School Archived Images News Yuno Iwasaki is a 2024 Paul & Daisy Soros Fellow Princeton-led group prepares Large Hadron Collider for a bright future Peter Elmer, Mariangela Lisanti, Isobel Ojalvo awarded support from Eric and Wendy Schmidt Transformative Tech Fund Congratulations to Prof. Chris Tully on the newly formed Princeton-Dutch PTOLEMY consortium Gillian Kopp wins Joseph Taylor Graduate Student Fellowship Current HEP Publications Multi-Messenger Astrophysics with the Cosmic Neutrino Background New Perspectives on Segmented Crystal Calorimeters for Future Colliders Research Areas Atomic Physics Biological Physics Condensed Matter Experiment Condensed Matter Theory Cosmology & Gravity Theory Cosmology Experiment & Observation High Energy Experiment High Energy Theory Mathematical Physics Particle & Nuclear Astrophysics Particle Phenomenology Selected Publications