At the INFN LNF (Frascati), the 510 MeV electron-positron collider DAΦNE is operating since 1997. The neutron fields in the areas around the accelerator were characterised using a Bonner sphere system. The sensitivity of the system was extended up to 102MeV by means of a lead loaded 12″ sphere. Recently developed thermoluminescence dosemeters (TLDs), with improved neutron sensitivity and gamma rejection properties, were used as central detectors. The new TLD-based spectrometric system was characterised by irradiation in quasi-monoenergetic or radionuclide neutron fields. In addition, numerical verifications with the Monte Carlo code MCNP were performed. This work addresses this new TLD-based spectrometer and presents the spectral measurements performed in a point of test around DAΦNE. The results are compared with those obtained, in the same point, with a previously validated Bonner sphere system based on an active6LiI(Eu) scintillator. © The Author 2007. Published by Oxford University Press. All rights reserved.
All Science Journal Classification (ASJC) codes
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Public Health, Environmental and Occupational Health
Bedogni, R., Esposito, A., Chiti, M., & Angelone, M. (2007). Neutron spectrometry around a high-energy electron-positron collider using a multi-sphere system with passive detectors. Radiation Protection Dosimetry, 126(1-4), 541 - 545. https://doi.org/10.1093/rpd/ncm109