Thomas Logan, Chairman and Chief Executive Officer
Mr. Thomas Logan is Chairman and Chief Executive Officer of Dosime Inc. and Mirion Technologies, where he is responsible for all aspects of the company's operations. Previously, Mr. Logan served as CEO for Global Dosimetry Solutions, where he led revenue growth of more than 50 percent, and doubled earnings during his tenure. Mr. Logan has more than 20 years of energy industry experience. In addition, he has extensive experience within the contract manufacturing and consumer products industries. He is the former national Chairman of the Association for Financial Professionals.

Mr. Logan has three issued U.S. patents, and two pending U.S. patent applications, as well as six issued international patents, and four pending international patent applications. He holds a Bachelor of Science degree and a Master in Business Administration from Cornell University.

Mike Brumbaugh, Executive Vice President and Chief Information Officer
Mike Brumbaugh has been Chief Information Officer of Mirion Technologies since January 2008. Previously, Mr. Brumbaugh headed the data services development division based in Düsseldorf, Germany for Vodafone, the world's largest mobile service provider. He also served as the CTO for Vodafone's Global Platform division based in the U.S. Prior to Vodafone, Mr. Brumbaugh served as Vice President for Technical Services for Verizon Wireless and was Vice President and Executive Director of Information at AirTouch Cellular. He also held numerous director level positions in IT at Pacific Bell. Mr. Brumbaugh holds a Bachelor of Arts degree in Economics from the University of California, Irvine.

Cindy Meyrath, Chief Product Officer
Cindy Meyrath is the Chief Product Office for Dosime Inc., where she manages product development and industrialization of new mobile-enabled radiation detection products that target the Internet of Things (IOT) and medical market and is responsible for brand identity, development, messaging, design, activation and launch. Prior to joining Dosime Inc., Ms. Meyrath was the Vice President of Product Management and Program Management at Mirion Technologies directing a worldwide cross functional team including marketing, research, hardware and software development, manufacturing and general & administrative functions. Ms. Meyrath holds a Bachelor of Science in Computer Engineering and Software Engineering from California Polytechnic State University-San Luis Obispo.

Sandy Perle, Chief Health Physicist
Sandy Perle is the Chief Health Physicist for Dosime Inc. Previously, he was employed by Mirion Technologies, Dosimetry Services Division, September 1996 – March 2014 and became President in May 2007 until March 2014, when he retired to become a consultant. Prior to Mirion Technologies, Mr. Perle was employed by Florida Power and Light Company as the Supervisor Corporate Health Physics, with primary responsibility for the Corporate ALARA Program, site radiation protection program assessments, health physics training program assessments, corporate dosimetry processing program maintaining the National Voluntary Laboratory Accreditation Program (NVLAP) Certification and the integrated health physics computer system.

Mr. Perle has been a member of the Health Physics Society since 1973 and is currently on the Board of Directors. He has served as Chair of the Standards Committee 2003-2014 and is a voting member on ANSI Accredited Standards Committees N13, N42 and N43, and currently a Working Group member on ANSI N13.11, N13.32 and N13.52. Mr. Perle is an Emeritus Fellow of the Society.

Mr. Perle is a member US Nuclear Technical Advisory Group (NTAG), ISO TC85/SC2, WG 17 and 19, IEC TC45 Working Group, and was Secretary, Council on Ionizing Radiation Measurements and Standards (CIRMS). Mr. Perle is a Technical Expert and has been conducting NVLAP On-Site Assessments for the Ionizing Radiation Dosimetry Program since December 1993.

Mr. Perle received his Bachelor's degree in Chemistry from the University of Miami in 1970 and his Master's degree in Radiological Physics in 1972.


Dr. Armin Ansari
Dr. Armin Ansari has more than 30 years of experience in the science and practice of radiation protection. His work experience ranges from laboratory research on structural alterations of DNA and molecular characterization of point mutations to characterization of environmental radioactive contamination, radiation dose assessment, and emergency response preparedness.

He earned his BS and Ph.D. degrees in radiation biophysics from the University of Kansas, starting his career as a radiation biologist, and did his postdoctoral research on molecular mechanisms of radiation-induced mutations at Oak Ridge and Los Alamos National Laboratories. He served as Project Leader for the Environmental Survey and Site Assessment Program, Oak Ridge Institute for Science & Education (ORISE), Oak Ridge Associated Universities (ORAU), and worked as Senior Scientist for the consulting firm of Auxier & Associates, Inc. in Knoxville, Tennessee, before joining the U.S. Centers for Disease Control and Prevention (CDC) in 2002.

Dr. Ansari serves as health physicist, acting lead for the Radiological Assessment Team, and subject matter expert in CDC’s radiation emergency preparedness and response activities. He has led the development of key national guidance documents including guides for radiation monitoring of population and operation of public shelters after large-scale radiation emergencies. He has represented CDC on the Federal Advisory Team for Environment, Food, and Health, and also served on a Homeland Security Council interagency committee for preparedness and response to radiological and nuclear threats, and was a contributing author to the federal planning guidance for response to a nuclear detonation. Dr. Ansari works closely with local and state public health agencies on matters related to nuclear and radiological emergency preparedness, has developed various radiation training and communication products for professional and lay audiences, conducts training workshops, and lectures extensively on this topic to technical and non-technical audiences throughout the country. In 2009, he authored a book, Radiation Threats and Your Safety: A Guide to Preparation and Response for Professionals and Community, specifically directed at audiences without radiation protection expertise.

Dr. Ansari is a President Emeritus of the U.S. Health Physics Society (HPS), a council member of the congressionally-chartered National Council on Radiation protection and Measurements (NCRP), and a member of the United States delegation to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR).

Dr. Richard R. Brey
Dr. Richard Brey received his Ph.D. from Purdue University in Health Physics in 1994.  He has engaged in a wide variety of research projects varying from radiation physics and detection to agricultural applications of radiation and radiation producing machines. This list importantly includes internal and external dosimetry, in which he has engaged in various collaborative efforts including the evaluation of historical exposures, evaluation of animal experimental data, and redefining and evaluating radioactive material translocation models. As a byproduct of these efforts he has published over 45 peer reviewed scientific publications and presented more than 130 times in various scientific venues.

He was the 2002 recipient of the Health Physics Society’s Elda E. Anderson award for his contributions to the profession in research and service.  During the spring of 2013, he was elected to serve as a Council member of the National Council of Radiation Protection and Measurements. Since 1995 he has been the director of an environmental radioanalytical laboratory which performs approximately 1,200 sample analyses per quarter, and the Director of the ISU Health Physics Program.  

He served as the Director of The ISU Technical Safety Office and University Radiation Safety Officer from 2005 to 20011.   From 2009 and 2010 he served as the Interim Chair for the ISU Department of Physics, and as a commissioner for ABET’s Applied Science Commission representing the Health Physics Society from 2004 to 2007.  For four years he served as Commissioner at Large for the ABET Applied Science Accreditation Commission, and as Associate Chair for the Department of Nuclear Engineering and Health Physics between 2010 and 2013 when he was appointed as the chair of that department. He assumed the duties of Interim Dean of the College of Science and Engineering in July 2013. During August of 2016 Dr. Brey was appointed as the Associate Vice President for Operations and Technical Safety Idaho State University
Dr. Paul A. Charp
Dr. Paul Charp has worked with the US Centers for Disease Control and Prevention and Agency for Toxic Substances and Disease Registry (CDC/ATSDR) since 1988. He is the Senior Health Physicist for the ATSDR Division of Community Health Investigations (DCHI). He oversees the development and consistent use of radiological concepts and radiological sciences in environmental public health. Dr. Charp, a nationally recognized radiation expert, predominantly is involved with issues associated with radiologically contaminated sites across the nation. These include abandoned uranium mines on Native American lands, former Manhattan Project sites, several federal sites associated with the Departments of Defense and Energy, and those sites contaminated with radioactive materials and are listed in Superfund. While with ATSDR, he has authored many public health assessments, health consultations, technical reviews, and the public health advisories dealing with radiologic contamination in the environment and its potential impacts on public health. He also has served on workgroups that developed guidelines for evaluating radiation issues associated with phosphogypsum slag.

His duties with the CDC include serving as a Subject Matter Expert (SME) for nuclear and radiological emergencies. He also serves as the Chair of the CDC's Radiation Safety Committee which provides for oversight of the CDC Radiation Safety Program to ensure proper training and safe use of radioactive material in areas under the control of CDC in all Atlanta facilities. He is also a member of the national Advisory Team for Environment, Food, and Health as currently defined in the National Response Framework.

Dr. Charp has graduate degrees from the University of Tennessee and the Georgia Institute of Technology (Georgia Tech). His academic background includes not only health physics but cell, molecular biology and biochemistry, radiation biology, physics/biophysics and engineering. He has previous research experience at Emory University Medical School, Oak Ridge National Laboratory and Kansas State University.

Dr. Charp is an elected Fellow of the Health Physics Society. He has been president of the Atlanta Chapter of the Health Physics Society, a past-chair of the National Health Physics Society Placement Committee, and past member of the National Health Physics Standards Committee. He currently is on the Academic Education Committee and a member of the Society’s Homeland Security Section.

Dr. Charp is a part-time instructor at Georgia Tech in the Nuclear and Radiological Engineering Program. He has taught Radiation Biology, Radioanalytical Chemistry, Introduction to Nuclear Engineering, Medical Physics, and Radiological Assessment and Waste Management. He has also taught Radiation Protection and Health Physics in the Systems Engineering Program at Southern Polytechnic State University, now part of Kennesaw (GA) State University and at Millersville (PA) University, he taught in their Master of Science in Emergency Management program.

Dr. S.Y. Chen
Dr. S.Y. Chen is currently director of Professional Master’s Health Physics Program at the Illinois Institute of Technology (IIT), Chicago, Illinois. Prior to joining IIT, he was Strategic Area Manager in Environment and Radioactive Waste and also Senior Environmental Systems Engineer at Argonne National Laboratory, Argonne, IL. He received B.S. in Nuclear Engineering from National Tsing Hua University in Taiwan; M.S. and Ph.D. in Nuclear Engineering from University of Illinois, Urbana, IL.

Dr. Chen is a national expert in radiation protection with expertise in radiological risk analysis, environmental remediation, nuclear safety, radiological incident/terrorism risk analysis, long-term recovery and radioactive waste management. Since 1999, he has been a member of the National Council on Radiation Protection and Measurements (NCRP), where he also serves as Scientific Vice President of Program Area Committee 5 (Environmental Radiation and Radioactive Waste Issues. From 2009 to 2015, Dr. Chen served on the U.S. Environmental Protection Agency’s Science Advisory Board/Radiation Advisory Committee. He is a Certified Health Physicist (CHP), a Fellow Member of the Health Physics Society (HPS), and a member of American Nuclear Society.  Dr. Chen has also served on several committees of the HPS; the latest being chair of the Academic Education Committee. At NCRP he had chaired two Scientific Committees: SC87-4 that led to the publication of NCRP Report 141 (2002), Managing Potentially Radioactive Scrap Metal; and SC5-1 for the publication of NCRP Report 175 (2014), Decision Making for Late-Phase Recovery from Major Nuclear or Radiological Incidents.

Mr. John Jacobus
Mr. John Jacobus began his career in health physics as a commissioned officer in the U.S. Navy after receiving master of science degrees from Pennsylvania State University in 1973 and in 1976. During his naval career, he served on submarine repair ships based in Charleston, South Carolina, and in Guam when deployments were made to Diego Garcia in the Indian Ocean and to the Philippines. Other assignments included the Armed Forces Radiobiology Research Institute in Bethesda, Maryland, and as the radiation safety officer for both the Naval Hospital in Charleston, South Carolina, and the National Naval Medical Center in Bethesda, Maryland.

Following retirement as a lieutenant commander in 1994, Mr. Jacobus worked as the junior medical physicist at a private hospital in Dallas, Texas. He joined the staff of the currently named Division of Radiation Safety at the National Institutes of Health in Bethesda, Maryland, in 1995.

After 21 years he retired at the end of April 2016. For over 10 years, Mr. Jacobus was the topic editor for the Medical and Dental Patient Issues area of the ATE feature on the HPS website. In 2000, he was certified by the ABHP and maintains his certification. He was selected a fellow of the HPS in 2004 and is an emeritus member of the American Association of Physicist in Medicine.

Dr. Andrew Karam
Dr. Karam, Ph.D., CHP is a highly respected health physicist with over 35 years of experience in the military, academia, medical, and emergency response communities. In the military, he served for eight years in Naval nuclear power, including spending four years on a fast-attack submarine homeported in San Diego. In academia he earned an undergraduate degree in Geological Sciences and a doctorate in Environmental Science from the Ohio State University, served as Radiation Safety Officer at the University of Rochester, and spent several years on the faculty of the Rochester Institute of Technology and the American University of Kosovo. Dr. Karam also Served as Radiation Safety Officer at Rochester’s Strong Memorial Hospital in addition to working on several consulting projects involving medical radiation safety.
In addition, Dr. Karam has extensive experience working with emergency responders, including the Rochester (NY) Fire Department, the Fire Department of New York, and the New York City Police Department. Rounding out his experience, Dr. Karam also worked in the regulatory realm with the Ohio Department of Health and the New York City Department of Health and Mental Hygiene as well as extensive consulting work. In addition to this work experience, Dr. Karam has served on two committees of the National Council on Radiation Protection and Measurements and one committee of the National Academy of Sciences, in addition to participating in a number of missions overseas on behalf of the International Atomic Energy Agency. Most recently, Dr. Karam traveled to Japan in the aftermath of the reactor accidents, helping to train medical and emergency responders in caring for patients from radiologically contaminated areas.
Dr. Karam is also a prolific author, having written over two dozen scientific and technical papers and chapters in six technical books and over 200 essays and editorials for professional society publications, as well as giving over 100 scientific or technical presentations at conferences in the US and overseas. For non-technical audiences, Dr. Karam has written 17 books, over 200 encyclopedia articles, and a number of magazine articles for Popular Mechanics and Scientific American.

Dr. Christopher G. Soares
Christopher G. Soares is a physicist, now retired. He worked in the Ionizing Radiation Division of the National Institute of Standards and Technology (NIST). He was at NIST, in the Dosimetry Group from 1975 to 2010 and worked on ionizing radiation measurement of photon and beta particle radiation fields with TLDs, ionization chambers, scintillation detectors, radiochromic film, and solid state detectors.

Dr. Soares currently is a Guest Researcher at NIST with current research centered on absorbed dose to water measurements of photon and beta particle brachytherapy sources. He is a member of NCRP, a US delegate to the International Organization for Standardization (ISO), and most lately served as Chairman of the working group revising ANSI N13.11, a standard he has been involved with in one way or another his whole career. He was in charge of both protection-level and medical beta particle source calibrations at NIST. He currently is a contractor at The University of Wisconsin-Madison and serves as an assessor for the National Voluntary Laboratory Accreditation Program (NVLAP).

Charlie E. Brannon, Jr.
Mr. Brannon is currently served a Radiation Safety Officer and Health Physicist Consultant. From 2006 to 2016 he served as Supervisory Health Physicist and Radiation Safety Officer for the Walter Reed National Military Medical Center in Bethesda, Maryland.

Mr. Brannon is recognized for his experience in gamma spectroscopy and radiochemistry, and emergency management and dosimetry for chemical, biological, radiological and nuclear causalities. He is trained in dental, radiographic and fluoroscopic x-ray surveys. From 2003 to 2006, he served as a Physical Scientist at the National Institute of Standards and Technology (NIST). Prior to that, for a year Mr. Bannon served as a Health Physicist for the National Nuclear Security Administration within the Department of Energy.                                                                       

He is a certified Radiation Safety Officer with a U.S. National Radiation Commission (NRC) Broad Scope Medical and Research License. In 2001, he was recognized by the State of Kentucky as a Qualified Expert for health physics.

Mr. Bannon is a retired U.S. Army Lieutenant Colonel and Desert Storm Veteran. He holds a B.S. in Biology from Jacksonville State University in Alabama.