The ATLAS team at
Northern Illinois University
is one of the two general-purpose detectors designed to study
proton-proton collisions at a center-of-mass energy of up to 14 TeV to be
delivered by the
Large Hadron Collider
Several members of the
Experimental High Energy Physics Group at NIU
participate in the ATLAS project.
"The ATLAS program at NIU is funded by the US National Science Foundation
The team currently consists of
Here's a list of former members.
- Prof. Jahred Adelman (Deputy Team Leader)
- Dr. Elizabeth Brost (Post-doctoral Research Associate),
- Tyler Burch (PhD student),
- Prof. Dhiman Chakraborty
- Elliot Parrish (PhD student),
- Dr. Pawel Klimek (Post-doctoral Research Associate),
- Puja Saha (PhD student),
- Brianna Stamas (PhD student),
- Dr. Yuri Smirnov (Senior Research Scientist),
- Prof. Donald Zinger (Electrical Engineer).
The NIU group is engaged in several critical tasks in operations of the ATLAS
detector, its planned upgrade, and high-priority physics analyses.
Some of these activities are conducted in close collaboration with
the Argonne National Laboratory.
The NIU team is contributing to the running of the ATLAS experiment through
the following tasks:
- Operation of the scintillator-tile hadronic calorimeter (TileCal):
- Data Preparation and Performance (DP&P);
- Data Quality Monitoring (DQM);
- Laser Calibration;
- Calibration and Conditions Database (CondDB),
- Management of US-ATLAS TileCal Maintenance and Operations (Level 2).
- Commissioning of the Fast TraKer (FTK):
- Run Coordination;
In the past the team has contributed to
- Management of US-ATLAS Physics Support (Level 1).
In addition to the above activities, team members also take detector and
software operation shifts appropriate for their areas of involvement.
- Detector simulation:
- Interaction of particles in the detector volume, using GEANT4;
- Translation of the result of the previous step into recorded data,
- Tau reconstruction.
NIU is responsible for assembling half of all the "LVBox"es needed to supply
low-voltage power to the TileCal on-detector electronics for the
High-Luminosity (HL-LHC) upgrade of ATLAS.
The NIU team's main physics interests are in searches for physics beyond the
Standard Model through Higgs interactions.
Specific topics currently under study include
- Searches for di-Higgs production in γγbb and
ττbb final states,
- Searches Charged Higgs bosons, produced in association with top quarks, and
decaying to τν,
- Differential distributions of the SM(-like) Higgs boson.
In relation to and extension of the above interests and activities, members
of the group have in the past contributed to several other tasks including
- Calibration of b-tagging using the ttbar candidate pool,
- Optimization of W+(heavy)jets Monte Carlo generator parameters,
- Detector performance studies (identification of photons and electrons,
- Monte Carlo production and validation,
- Calibration of forward jets under pile up,
- Service on a number of editorial boards,
- Co-convenership of US-ATLAS top physics forum,
- Coordination of the US-ATLAS Analysis Support Center (ASC) at ANL.
The NIU ATLAS team's research is supported by grants from the National Science Foundation
For more information, contact
Prof. Dhiman Chakraborty or
Prof. Jahred Adelman
Last updated: DC, 2018-01-20.