Leadership

Darius Lisowski manages the Reactor Safety Testing & Analysis group within Argonne’s Nuclear Science and Engineering Division. His primary research area is in experimental thermal hydraulics with a focus on natural circulation systems and two-phase flow. He also has extensive experience with the development and use of high-fidelity sensors, data acquisition, and control systems. He is currently the principal investigator for the Natural Convection Shutdown Heat Removal Test Facility (NSTF) at Argonne, and had led the conversion to a water-based cooling design. In addition to experimental practices, he has carried out extensive studies on scaling criteria, instability modes, and computational model with both system level and CFD codes.

Sergey Chemerisov is the Manager of the Intermediate Voltage Electron Microscope (IVEM) and Low Energy Accelerator Facilities (LEAF) in the Experimental Operations and Facilities division at Argonne National Laboratory. His experience includes electron paramagnetic spectroscopy; radiation chemistry of water in confined media; development of high-intensity positron sources; radiation chemistry of fissioning solution; development of novel ways for producing radioisotopes; development of high-power beam targets; and managing accelerator upgrades, operations, and maintenance.

Victor Guarino is the Manager of Engineering Services. In his 30+ year career at Argonne, he has had diverse roles in technical management such as project engineer for the ATLAS Tile Calorimeter at CERN, leading the design and fabrication of precision motion systems at the APS, project engineer for the design of several large telescope structures, and managing the Mechanical Support Group in the High Energy Physics division for 15 years.

Nathan has 20 years of applied mechanical engineering experience including 8 years at Argonne, where he is currently working as a Test Engineer in the Experimental Operations and Facilities division.

Tony has 34 years of experience at Argonne National Laboratory, where he is currently supervisor of the Experimental Facilities Group in the Experimental Operations and Facilities division. He worked for ten years in the Argonne Environmental Monitoring Group, conducting field work on and off the Argonne Site. Tony also worked in the Energy Systems / Applied Materials Division for several years.