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Improved shielding calculations for the Particle Beam Fusion Accelerator II

Conference · · Trans. Am. Nucl. Soc.; (United States)
OSTI ID:5576904

Even though PBFA-II accelerates ions, significant bremsstrahlung is produced from electron losses along the magnetically insulated transmission lines and in the diode. Shielding personnel and electronics from this intense bremsstrahlung was an important concern during the accelerator design phase. A previous study, using the three-dimensional Monte Carlo electron-photon transport code ACCEPT, indicated the need for additional close-in shielding and for relocation of some electronic control devices. New ACCEPT simulations, described here, include a more efficient version of the next-event-estimator calculation, a more realistic source distribution for the electrons, and recent design information for the diode and the top and bottom radiation shields.

Research Organization:
Sandia National Lab., Albuquerque, NM
OSTI ID:
5576904
Report Number(s):
CONF-860610-
Journal Information:
Trans. Am. Nucl. Soc.; (United States), Journal Name: Trans. Am. Nucl. Soc.; (United States) Vol. 52; ISSN TANSA
Country of Publication:
United States
Language:
English