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Mu2e Fermilab:to main content Home Help Press Room Phone Book Fermilab at Workto main content Mu2e Home Why muons at the Intensity Frontier? Research goals How it works Collaboration Internal documentsGraphicsMu2e for physicists Mu2e internal Mu2e PMG Related Links Fermilab Accelerator Upgrades European Project Muon DepartmentMuon (g-2) Experiment YouTube Twitter Home Page HEP Program News & Information Particle Physics News Image Bank Fermilab in the News Quantum Diaries Mu2e: muon-to-electron-conversion experiment Feature Collaboration A team of physicists from all over the world, including postdocal researchers and graduate and undergraduate students, are working together to design, test, and build the Mu2e experiment. On the left, colleagues from Frascati are shown working on the mechanical support for a calorimeter prototype module. Read more Collaboration A team of physicists from all over the world, including postdocal researchers and graduate and undergraduate students, are working together to design, test, and build the Mu2e experiment. On the left, students from the University of Minnesota work to build a prototype panel for the tracker. Read more Collaboration A team of physicists from all over the world, including postdocal researchers and graduate and undergraduate students, are working together to design, test, and build the Mu2e experiment. On the left, students from CUNY York prepare end-pieces for the tracker straws. Read more Outreach Communicating the science, challenges, and excitement of the Mu2e experiment is an important component of our work. On the left, a Mu2e researcher gives a tour of the Mu2e experimental hall during a recent open house event at Fermilab. Read more Collaboration A team of physicists from all over the world, including postdocal researchers and graduate and undergraduate students, are working together to design, test, and build the Mu2e experiment. On the left, a team of researchers prepare a module for the cosmic ray veto system at the University of Virginia. Read more Muon Campus The Mu2e experiment will be housed in a custom-made building on the new Muon Campus at Fermilab. The campus also includes the Muon g-2 experiment, which shares a beam line and utilities with Mu2e. An aerial view of the Muon Campus is depicted on the left. Also visible is Wilson Hall. Read more LGBTQ+ STEM Day The Mu2e Collaboration participated in the first International Day of LGBTQ+ People in Science, Technology, Engineering, and Maths. We recognize that many LGBTQ+ people in STEM have experienced or observed exclusionary behavior, and believe that a day of recognition can help raise awareness and increase support for the LGBTQ+ community. #LGBTSTEMDAY Learn more : LGBTQ+ STEM Day Vertical Slice Test Our first tracker plane being craned by Wanda Newby,saluted by Mete Yucel, and supervised by Aseet Mukherjee. Photo by Bob Tschirhart. The tracker is the device that measures the momentum of the electron in muon-to-electron conversion. It’s made of about 22,000 straws each about the diameter of a pencil, and with walls about as thick as a human hair. There will be 18 of the planes like the one here. @Mu2eExperiment Read more In recent years, particle physicists have increasingly turned their attention to finding physics beyond the Standard Model, the current description of the building blocks of matter and how they interact. Discoveries beyond the Standard Model will help scientists answer some of the most fundamental questions about matter and our universe. Were the forces of nature combined in one unifying force at the time of the Big Bang? How did the universe change from being dominated by energy and radiation remnants from the Big Bang to the one we see today with visible matter, including people and plants? Addressing these challenging questions will require combining insight and observations from the three discovery frontiers: Cosmic, Energy and Intensity. The linchpin for discovery during the next few decades will be research at the Intensity Frontier on ultra-rare processes, including muon-to-electron conversion. Intensity Frontier searches will provide part of the context to interpret discoveries made on the other frontiers and narrow the number of plausible theories for the origins of physics beyond the Standard Model. Mu2e will directly probe the Intensity Frontier as well as aid research on the Energy and Cosmic frontiers with precision measurements required to characterize the properties and interactions of new particles discovered at the Intensity Frontier. Observing muon-to-electron conversion will remove a hurdle to understanding why particles in the same category, or family, decay from heavy to lighter, more stable mass states. Physicists have searched for this since the 1940s. Discovering this is central to understanding what physics lies beyond the Standard Model. At the most simplistic level, electrons are responsible for the electricity that lights our houses and turns on our computers. Muons are some sort of heavier cousin of the electron, but we’re not sure just what the relationship is. This experiment will help us understand that relationship, and so understanding muons is part of understanding the electrons that power our society. Construction of the experiment has begun and first beam commissioning is expected to start in early 2025. Useful Links DOE´s High Energy Physics Advisory Panel (P5 2014 Report) (P5 2008 Report) Fermilab´s Physics Advisory Committee (Report November 2008) Fermilab Steering Group Report Links to similar particle physics projects MEG experiment at PSI Mu3e experiment at PSI COMET experiment at JPARC in Japan MEGA experiment at Los Alamos National Laboratory In the News September 10, 2020 Fermilab News Safety in robots: Mu2e’s automated handler June, 2020 Symmetry Magazine The Stories a Muon Could Tell June, 2018 Fermilab News Richie Bonventre wins Tollestrup Award January, 2018 Fermilab News MUSE and NEWS are on the RISE August, 2017 Fermilab News Mu2e’s Magnet Boot Camp May, 2017 Fermilab News Mu2e Celebrates completion of experimental hall October, 2016 Fermilab News Cosmic rays are a pain August, 2016 Chicago Tonight Mu2e and the Windy City Physics Slam July, 2016 CD-3 awarded July 14, 2016 Mu2e reaches CD-3 milestone October, 2015 Fermilab Today What happens when you kidnap a muon? August, 2015 Fermilab Today Prototype of Mu2e solenoid passes tests with flying colors July, 2015 Fermilab Today Mu2e’s opportunistic run on the Open Science Grid June, 2015 CERN Courier The Mu2e experiment: a rare opportunity April, 2015 Fermilab Today Mu2e breaks ground on experiment seeking new physics - March, 2015 Fermilab Today Mu2e construction shifts into high gear - March, 2015 CD-2 awarded March 4, 2015 Mu2e Technical Design Report - March, 2015 Fermilab Today Detecting something with nothing February, 2015 Fermilab Today Construction update: Muon Campus Beamline - February, 2015 Fermilab Today Mu2e moves forward with new collaborations, new deputy project manager - January, 2015 Fermilab Today Mu2e polishes off prototype module for transport solenoid - January, 2015 American Physical Society Professor Marjorie Corcoran honored - December, 2014 Fermilab Today Digging begins for Muon g-2 and Mu2e beamlines - October, 2014 Fermilab Today Mu2e moves ahead - April, 2014 NIU Today Man in the Muon February, 2014 Fermilab Today New Mu2e co-spokesperson - December, 2013 symmetry breaking Mu2e attracts magnet experts December, 2013 Fermilab Today Mu2e superconducting cable prototype successful June, 2013June 2013 Fermilab Program Advisory Committee ReportFinal ReportMay, 2013Charged Lepton Flavor Violation Conference at Lecce, Italy, May 6 20131st Internation Conference on Charged Lepton Flavor ViolationJuly, 2012 CD-1 awarded July 11, 2012 Mu2e Conceptual Design Report - June, 2010 symmetry breaking The Muon Guys: On the hunt for new physics May, 2010 New Scientist Muon whose army? 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