Canada: National Research Council of Canada (NRC-CNRC)

The NRC is the National Measurement Institute for Canada. Ionizing radiation metrology activities address the four main application areas of: •Radiation therapy and imaging •Personnel and environmental radiation protection •Radiation processing (high-dose) •Security and safety The NRC IR laboratories are located in Ottawa, the capital city of Canada, and operation dates back to the early 1950s (beginning with kV X-rays and Co-60). Currently there are 20 research and technical staff working on measurement standards, detector development and investigation, calibration services, and certified reference materials. A wide range of facilities support these activities including: • Co-60 irradiators (both therapy and protection level) • Cs-137 irradiator (protection level) • kV X rays, 10 kV-250 kV (for therapy, protection and diagnostic radiology applications) • Brachytherapy systems for HDR (Ir-192) and LDR (I-125) delivery • Linear accelerators, two clinical linacs (one with 120-leaf MLC), one specialized research machine (4-35 MV photon, 3-35 MeV electron; protection to industrial dose rates) • Neutron sources (Am-Be, Cf, d-p generator) • Radiochemistry lab (source preparation) • Radionuclide metrology lab (α, β, γ measurements).