HEE Seminar (April 7 through June 30) Thursday, April 10 2:30 PM A.Tsatsos: Exploring ALPs under the Alps: The Search for a Diphoton Resonance with the CMS Experiment in an Unexplored Mass Range Thursday, April 17 3:30 PM C. Garcia-Quintero: Energy Spectroscopic Instrument: Challenges to the ΛCDM model. Thursday, June 26 2:30 PM I. Reed: Searches for Expected and Unexpected Particles Using Photons at the Large Hadron Collider