Radiation Measurements An Option Within Nuclear Engineering and Radiological Sciences

Measurements Faculty Research Areas Faculty and Staff:  G. Knoll – Rad Measurements  R. Fleming – Neutrons and statistics  D. Wehe – Imaging systems  Z. He – Room-temperature semiconductors  S. Pozzi – Simulation & measurements of SNM detection systems  M. Flaska – Detectors for nuclear material  S. Clarke – Monte Carlo simulations  M. Hammig – Solid-state & nano detectors  K. Kearfott – Health physics  A. Bielajew – Medical physics  M. Flynn – Health radiation physics  N. Clinthorne – UM radiology  M. Goodsitt – UM medical school  R. Weiner – SNM transport risk Areas of Activity:  Neutron and gamma ray detector design  Measurements of atomic and nuclear parameters  Methods development for detector systems  Neutron activation analysis  Radiation imaging systems  Nondestructive assay of nuclear materials;  Active interrogation and passive detection techniques for homeland security  Basic physics  Radiation safety and health physics  Environmental impact of nuclear fuel cycles  Radiation dose estimation, from external sources and internal radionuclides  Radiation transportation risk assessment 2

 Security  Nonproliferation; Nuclear safeguards  Homeland Security  Astrophysics  Medicine  CT, PET, SPECT, Operative Probes  Diagnostics/Treatment  Energy Production  Fission  Fusion  Geological exploration  High Energy Physics Experiments  Materials Science Application Areas 3

 Detector Design  GaAs Solid State Radiation Detectors  RT Semiconductor Detectors [HgI2, CZT...]  Microstrip Gas Detector  Wavelength shifters for BaF Spectral Separation  Solid state photomultipliers  Fundamental Physics  Physics of Nuclear Fission  Fast Neutron TOF Measurements  Absolute Scintillation Yield of CsI  Detector Systems Methods Development  Online detector gain stabilization  Digital Pulse Processing Techniques  Neutron Depth Profiling  Mechanical Detection of Radiation  Neutron Activation Analysis  Spectral Shape-Independent NAA  Real-time Neutron Radiography  Reference Neutron Field Irradiation Facility  Radiation Imaging Systems  Single Compton Scattering Camera  Multiple Compton Scattering Camera Reconstruction  Two-Dimensional Activation Imaging System  Micro-CT  Mechanically Collimated Imagers  Hybrid Imaging Camera  Rotational Modulation Imaging  Nuclear Nonproliferation  Response Matrix Method for Simulating Neutron Pulse Height Distribution Measurements  Time-Correlated Pulse Height Analysis for Nuclear Material Identification  Design of a Multiplicity Counter based on Organic Scintillators  Neutron Spectroscopy via Spectrum Unfolding with Deuterated Scintillators PhD Projects Past and Present 4

Measurements Courses  Core Courses  NERS 311/2: Atomic and Nuclear Physics  NERS 425: Applied Nuclear Radiation Laboratory  NERS 481/580: Engineering Aspects of Radiation Imaging  NERS 515: Nuclear Measurements Laboratory  NERS 518: Advanced Radiation Measurements  NERS 535: Detection Techniques for Nuclear Nonproliferation  NERS 590: Monte Carlo Methods  NERS 590: Nuclear Safeguards  Popular Courses  EECS 456: Digital Signal Processing  EECS 516: Medical Imaging Systems  Courses Relevant to Particular Research Areas  EECS 423: Solid State Device Laboratory  NERS 576: Charged Particle Accelerators  EIH 694/695: Radiation Dosimetry/Biology  NERS 425: Applied Nuclear Radiation  NERS 554: Radiation Shielding Design 5

Detection for Nuclear Nonproliferation Group Professor Sara Pozzi, Assistant Research Scientists Dr. Marek Flaska and Dr. Shaun Clarke Established in November Currently 30 members: 4 research staff, 14 PhD students, 3 masters students, undergraduate students.  Diversified research portfolio  Development of new methods for nuclear material identification and characterization  Neutron detector development  Neutron and gamma-ray imaging  International measurement campaigns  Monte Carlo code development  Unfolding algorithms for inverse problems Recognition: Student Awards  8 Students on Fellowships: Nuclear Forensics, Nuclear Nonproliferation Graduate Fellowships  “Best Student Paper” awards at the Institute of Nuclear Materials Management Central Chapter meeting in 2009 and IEEE Nuclear Science Symposium 2009  “Best Student Paper” awards at the Institute of Nuclear Materials Management Annual Meetings in 2007, Nuclear material measurements in Ispra, Italy August 2008, June 2010, and May 2011 Capture-gated detector measurements Geel, Belgium - October

Radiation Measurements Group Prof. David Wehe  Research areas  Applied radiation measurement systems  Radiation imaging systems 7

Room Temperature Semiconductor Group Prof. Zhong He  Goal: develop advanced radiation sensors, in particular, gamma-ray and neutron spectrometers and imaging systems  Theme: single-polarity charge sensing and 3-dimensional position- sensing using semiconductor gamma-ray spectrometers  Applications: nuclear nonproliferation and arms control, homeland security, medical imaging, cancer diagnosis, and gamma-ray astronomy 8

Radiation Detector and Science Laboratory Dr. Mark Hammig Research Focus: 1)Fundamental detector physics 2)Application of Advanced Gamma-ray Imagers 3)Novel solid-state detectors 4)Photonic devices Geehyun Kim Nano-semiconductors Manhee Jeong Semiconductor Fab Lab Guru 9

Radiological Health Engineering Laboratory Prof. Kim Kearfoot  Major research projects:  Development of personal dosimeters  Radon gas detection  Environmental radiation measurements  Internal radiation dose assessment 10