Dual Particle (Neutron and Gamma) Imaging

#devices #radiation #detection

Distinguished Lecture by Prof. Sara Pozzi of Michigan University.

Virtual Only on Zoom, please register to attend. No charge

  Date and Time




  • Date: 08 Mar 2023
  • Time: 11:00 AM to 01:00 PM
  • All times are (UTC-08:00) Pacific Time (US & Canada)
  • Add_To_Calendar_icon Add Event to Calendar
If you are not a robot, please complete the ReCAPTCHA to display virtual attendance info.
  • Contact Event Host
  • Co-sponsored by TRIUMF
  • Starts 08 February 2023 02:00 PM
  • Ends 07 March 2023 05:00 PM
  • All times are (UTC-08:00) Pacific Time (US & Canada)
  • No Admission Charge


Dr Sara Pozzi Dr Sara Pozzi of University of Michigan


Dual Particle (Neutron and Gamma) Imaging

The Dual-Particle Imager (DPI) is an instrument based on scintillation detectors (liquid organic and sodium iodide) that has been proposed as a device capable detecting, localizing, and characterizing SNM. The DPI is sensitive to fast neutrons and gamma-rays, with the ability to separately reconstruct images and emitted energy spectra for both particle types. To aid this effort, new advanced imaging techniques are being developed for use with the DPI that improve image resolution and allow for the isolation of emitted energy spectra in a multi-source environment. The system is fully scalable, and a handheld version of the DPI is also being developed. This smaller system relies on an array of stilbene scintillator bars, which are sensitive to both neutrons and photons. Each bar is read-out using silicon photomultipliers at either end, allowing for axial position sensitivity.


Professor Sara Pozzi earned her M.S. and Ph.D. in nuclear engineering at the Polytechnic of Milan, Italy in 1997 and 2001, respectively. She is a Professor in the Department of Nuclear and Radiological Sciences at the University of Michigan where she established and is the leader of the Detection for Nuclear Nonproliferation Group (DNNG). Her research interests include the development of new methods for nuclear materials detection, identification, and characterization for nuclear nonproliferation, safeguards, and national security programs.

Professor Pozzi is the founding Director of the Consortium for Verification Technology (CVT) 2014-2019 and the Consortium for Monitoring, Technology, and Verification (MTV) 2019-2024, two large consortia of multiple universities and national laboratories working together to develop new technologies needed for nuclear treaty verification. In this capacity, she directs the work of 25 faculty members and over 250 students engaged in research projects within the consortium. She is the co-author of the Monte Carlo code MCNPX-PoliMi, which is being used at over 50 institutions world-wide. Her publication record includes over 400 papers in journals and international conference proceedings. She presented over 100 invited lectures, both nationally and internationally. She has graduated 25 Ph. D. students who went on to develop successful careers at the national laboratories, academia, industry, and government. She served the NPSS in many positions, including member of Radiation Instrumentation Technical Committee (RITC), RITC Awards Chairperson, and Nuclear Science Symposium Co-chair for Atlanta, 2017, and Boston, 2020 (virtual).

She is the recipient of many awards, including the 2006 Oak Ridge National Laboratory Early Career Award, 2006 Department of Energy, Office of Science, Outstanding Mentor Award, 2012 INMM Edway R. Johnson Meritorious Service Award, 2017 IEEE Distinguished Lecturer, 2018 Rackham Distinguished Graduate Mentoring Award, and 2021 American Nuclear Society Gail De Planque Award. She is a Fellow of the American Nuclear Society, the Institute of Nuclear Materials Management, and the IEEE.


Address:Nuclear Engineering, Radiological Sciences, Physics Departments, University of Michigan, Ann Arbor, Michigan, United States