Preliminary skyshine calculations for the Poloidal Diverter Tokamak Experiment
A calculational model is presented to estimate the radiation dose, due to the skyshine effect, in the control room and at the site boundary of the Poloidal Diverter Experiment (PDX) facility at Princeton University which requires substantial radiation shielding. The required composition and thickness of a water-filled roof shield that would reduce this effect to an acceptable level is computed, using an efficient one-dimensional model with an Sn calculation in slab geometry. The actual neutron skyshine dose is computed using a Monte Carlo model with the neutron source at the roof surface obtained from the slab Sn calculation, and the capture gamma dose is computed using a simple point-kernel single-scatter method. It is maintained that the slab model provides the exact probability of leakage out the top surface of the roof and that it is nearly as accurate as and much less costly than multi-dimensional techniques.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls, ID
- OSTI ID:
- 6830951
- Journal Information:
- Nucl. Technol./Fusion; (United States), Vol. 1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PDX DEVICES
RADIATION DOSES
GAMMA RADIATION
NEUTRONS
ROOFS
SHIELDING
WATER
BARYONS
DIVERTORS
DOSES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYDROGEN COMPOUNDS
IONIZING RADIATIONS
NUCLEONS
OXYGEN COMPOUNDS
RADIATIONS
700206* - Fusion Power Plant Technology- Environmental Aspects