The ATLAS detector studies proton-proton collisions at a center of mass energy of 14 TeV, seven times higher than previous facilities. We have discovered the Higgs boson in 2012 and are constantly searching for new forms of matter such as supersymmetric states. The lighest supersymmetric state is a prime candidate for the dark matter and supersymmetry is an essential ingredient of many attractive theories.

This detector is now in operation at CERN's Large Hadron Collider (LHC). Since 2010 it has been operating at a center of mass energy of 7 TeV (2010-2011), 8 TeV (2012) and 13 TeV (2015-present). The Chicago group built much of the readout electronics for the hadron calorimeter (TileCal). The group is also currently involved in preparing upgrades to the trigger system used to identify interesting interactions to be recorded, including a new hardware-based track trigger (FTK), and a new hardware-based calorimeter trigger (gFEX). The group is heavily involved in analysing the data taken by the experiment.

The Chicago group consists of five faculty members (Kim, Miller, Oreglia, Shochet, Pilcher) together with research personnel and students. Many of the members of the group are in full time residence at CERN, with the rest in Chicago. The physics analysis of the group is supported by a powerful computing facility which includes an ATLAS Tier 3 computing system dedicated to Chicago physicists, and one of the five US ATLAS Tier 2 facilities.

atlas detector

Recent News and Highlights from the UChicago ATLAS Group!

in Elba, Italy
June 17, 2019: ATLAS Collaboration Week this week at CERN features reports from Max Swiatlowski on Jets and Missing energy, Lesya Horyn on the Early Career Scientist Board, and Doug Schaefer on Vector boson fusion and scattering measurement and modelling
June 12-14, 2019: Emily Smith and David Miller present results and future possibilities for machine learning using Multi-Processor System-on-Chip (MPSoC) hardware devices at the first System-on-Chip Workshop
May 12-17, 2019: Young-Kee Kim presents the Perspective on the European Strategy from the Americas at the Open Symposium - Update of the European Strategy for Particle Physics
May 9, 2019: Emily Smith is featured in the Physical Sciences Division Spotlight
May 5-10, 2019: Lesya Horyn and Max Swiatlowski talk about Commissioning and doing Physics with the FTK in the 2019 ATLAS Trigger Workshop
April 10, 2019: Results in search for dark matter production using invisible Higgs decays [arXiv:1904.05105] released and submitted to PRL
April 1, 2019: Congratulations to Emily Smith who has been offered the NDSEG Fellowship, to start in Fall 2019!
Feburary 27, 2019: Welcome to Marc Weinberg, a new member of Rob Gardner's scientific computing team! Marc joins us from Carnegie Mellon University where he was a postdoc on CMS and a Distinguished researcher at the LHC Physcs Center, based at Fermilab
January 23, 2019: Congratulations to graduate student Lesya Horyn (Advisor: Young-Kee Kim) on her appointment to the ATLAS Early Career Science Board!
October 17, 2018: The gFEX production trigger system (coordinated by David Miller) takes first collision data during Stable Beams!
September 27, 2018: Planning workshop for building a new Cyberinfrastructure and Data-Intensive Analytics Training program at UChicago held with scientists from UChicago, Argonne, Fermilab, and industry partners from Amazon and Udacity.
September 18, 2018: Graduate student Patrick Bryant (Advisor: Mel Shochet) successfully defends his thesis (Search for Pair Production of Higgs Bosons in the Four Bottom Quark Final State Using Proton-Proton Collisions at sqrt(s) = 13 TeV with the ATLAS Detector)!
September 17, 2018: Graduate student Joakim Olsson (Advisor: David Miller) successfully defends his thesis (Searching for supersymmetry in Fully Hadronic Final States with the ATLAS Experiment)!