Scientific Team

Dr. John Barnard, Senior Technical Specialist ( has 30 years of experience in the health, safety, radiation processing and environment fields with Cancer Care Manitoba, Atomic Energy of Canada Limited (AECL) and Acsion. His principal areas of expertise are Operational Radiation Safety, Health Physics and Nuclear Physics. He has authored more than 50 publications or reports on radiation processing and health physics topics. He has managed industrial accelerator facilities and acted as a regulatory/licensing specialist for the Canadian Government (AECL) and in the uranium mining industry. He has developed training materials and taught radiation protection at Department of National Defence, Saskatchewan Environment and AECL.

David Brown, President, Mevex Corporation, Ottawa, ON ( graduated from Queen’s University’s Engineering Physics program in 1988. David joined Mevex in 1988 and participated in commissioning the Mevex Applications Development Centre (ADC). The ADC worked with potential accelerator users to develop novel processes on a pilot scale. Projects included space radiation simulation studies with DND-CRC, nuclear blast simulations for DND-DREO, breaking chemical bonds for peat and cellulose, and microbial reduction applications. David was charged with growing the medical therapy service business and with designing, selling, and building the first Mevex industrial accelerator. David is a key player in Mevex’s operations, marketing, technical support, and R&D programs.

Dr. Paul Carlson – Senior Scientist – Nuclear and Radiation Physics ( has over 25 years experience in nuclear physics research, analyses and code development, with companies such as Acsion and AECL. His career has included core physics analysis, training of Korean and Mexican physicists in the use of physics analysis methods and codes, designing, testing and integrating new code that predicts radionuclide transport, and extensive experience with MCNP code, including developing its standard operating procedure. Dr. Carlson is a key technical resource for this project because of his experience with criticality analyses.