Portable radiation survey meter operating in strong magnetic field, for alpha, beta and gamma measurements

Portable radiation survey meter operating in strong magnetic field, for alpha, beta and gamma measurements

Radiation surveys around particle accelerators or radioactive-source facilities are usually performed with hand-held gamma monitors and, in specific cases, contamination probes. The aim of these surveys is to evaluate the radiological risk of personnel exposure to ionizing radiation. The need for a portable radiation survey meter operating in strong magnetic fields came from the LHC experiments at CERN. Investigation by CERN’s Radiation Protection Group found that commercial radiation-survey meters were unable to meet these requirements. Thus, a collaboration agreement with the Politecnico di Milano was initiated to design and build a small series (five units) of prototype devices. In 2013 the KT group established a formal relationship with the Politecnico di Milano and developed an IP management and exploitation agreement with the partner organization. The devices find applications in diverse domains, from PET/MRI scanners to industrial mineral processing and even fire brigades.