Measurements of leakage neutron spectra from a high-energy accumulation ring using Extended Range Bonner Sphere Spectrometers

作者：Esposito A; Bedogni R^*; Domingo C; Garcia M J; Amgarou K

来源：Radiation Measurements, 2010, 45(10): 1522-1525.

DOI：10.1016/j.radmeas.2010.04.008

• Extended Range Bonner Sphere
• Spectrometer
• Neutron spectrometry
• High-energy electron/positron accelerator
• FRUIT unfolding code

Within the INFN-UAB cooperation, an experimental neutron spectrometry exercise was organized in DA Phi NE, the high-energy Phi-meson producing accelerator (Phi-factory) of the INFN-Frascati National Laboratories. Particularly, the workplace neutron fields produced by a 510 MeV positron beam accumulated in the DA Phi NE ring were characterized. As suitable instruments, the INFN and UAB Extended Range Bonner Sphere Spectrometers (ERBSS) were employed. These systems rely on different central detectors and have different sets of extended-range spheres. The experimental data were unfolded with the FRUIT unfolding code, especially designed for workplace measurements in absence of detailed pre-information on the neutron field. This analysis allowed studying the high-energy (>10 MeV) component of the neutron fields and assessing the performance of the two different ERBSS in this energy domain. Besides the discussion on ERBSS, this paper presents experimental data that may be used in radiation protection of high-energy positron beams.

• 出版日期2010-12