Cornell Laboratory for Accelerator-based Sciences and Education

The Cornell Laboratory for Accelerator-based Sciences and Education (CLASSE) is a particle accelerator facility located in Wilson Laboratory on the Cornell University campus in Ithaca, NY. CLASSE formed from the merger of the Cornell High-Energy Synchrotron Source (CHESS) and the Laboratory for Elementary-Particle Physics (LEPP) in July 2006.Ritchie Patterson is the Director of CLASSE.

The Wilson Synchrotron Lab, which houses both the Cornell Electron Storage Ring (CESR) and CHESS, is named after Robert R. Wilson, known for his work as a group leader in the Manhattan Project, for being the first director of the Fermi National Accelerator Laboratory, and for contributing to the design of CESR.

The Laboratory for Elementary-Particle Physics (LEPP) is a high-energy physics laboratory studying fundamental particles and their interactions.

In operation below the athletic fields on campus is the 768 meter Cornell Electron Storage Ring (CESR). CESR is an electron-positron collider operating at a center-of-mass energy in the range of 3.5-12 GeV. Completed in 1979, CESR stores beams accelerated by the Cornell Synchrotron.

Adding to a long history of significant developments, such as superconducting radio frequency cavities and pretzel orbits, the accelerator group is now developing an entirely new type of superconducting linear accelerator called the Energy Recovery Linear accelerator (ERL). The group is also involved in the design of damping rings, tracking simulations, RF cavities, and accelerator operation for the International Linear Collider (ILC).

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