Spectra and Neutron Dosimetry Inside a PET Cyclotron Vault Room
- Unidades Academicas: Estudios Nucleares e Ing. Electrica. Universidad Autonoma de Zacatecas, A.P. 336, 98000 Zacatecas, Zac. Mexico (Mexico)
- Universidad Europea Miguel de Cervantes, Valladolid (Spain)
- Facultad de Ciencias de la Universidad de Valladolid, Valladolid (Spain)
- Servicio de Medicina Nuclear, Clinica Universitaria de la Universidad de Navarra (Spain)
- Hospital Universitario Rio Hortega, Valladolid (Spain)
The neutron field around a PET cyclotron was investigated during 18F radioisotope production with an 18 MeV proton beam. Pairs of thermoluminescent dosemeters, TLD600 and TLD700, were used as thermal neutron detector inside a Bonner Spheres Spectrometer to measure the neutron spectra at three different positions inside the cyclotron's vault room. Neutron spectra were also determined by Monte Carlo calculations. The hardest spectrum was observed in front of cyclotron target and the softest was noticed at the antipode of target. Neutron doses derived from the measured spectra vary between 11 and 377 mSv/{mu}A-h of proton integrated current, Doses were also measured with a single-moderator remmeter, with an active thermal neutron detector, whose response in affected by the radiation field in the vault room.
- OSTI ID:
- 20888201
- Journal Information:
- AIP Conference Proceedings, Vol. 854, Issue 1; Conference: 9. Mexican symposium on medical physics, Guadalajara, Jal. (Mexico), 18-21 Mar 2006; Other Information: DOI: 10.1063/1.2356448; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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