Nuclear Analysis of a Tokamak Experimental Power Reactor Conceptual Design
| Autor: | Mohamed A. Abdou, Jungchung Jung |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
Nuclear and High Energy Physics
Neutron transport Materials science Toroid Tokamak 020209 energy 02 engineering and technology Mechanics Blanket Condensed Matter Physics law.invention Nuclear physics 020303 mechanical engineering & transports 0203 mechanical engineering Nuclear Energy and Engineering law Shield Electromagnetic shielding 0202 electrical engineering electronic engineering information engineering Neutron source Neutron |
| Zdroj: | Nuclear Technology. 35:51-79 |
| ISSN: | 1943-7471 0029-5450 |
| Popis: | Detailed nuclear analysis of a reference conceptual design for a tokamak experimental power reactor (EPR) is presented. The reference EPR has a 6.25-m major radius and a 2.1-m minor radius circular plasma with a nominal neutron wall loading of 0.5 MW/m/sup 2/. A 0.28-m-thick blanket of stainless steel surrounds a stainless-steel vacuum vessel. The inner shield consists of stainless steel and B/sub 4/C and is 0.58 m thick. The 0.97-m-thick outer shield employs lead mortar, stainless steel, and graphite. The neutronics results in the first wall and blanket vary significantly in the poloidal direction due to an outward shift in the deuterium-tritium neutron source distribution and the toroidal curvature. The infinite cylinder approximation overestimates response rates in the first wall compared with toroidal geometry calculations. Neutral beam lines, vacuum ducts, and other penetrations of the blanket and bulk shield represent large (approximately 0.6- to 1.0-m/sup 2/ cross section) streaming paths for neutrons and require special shielding. A special 0.75-m-thick annular shield surrounds the neutral beam duct after it exists from the bulk shield and extends beyond the toroidal field coil and out to the beam injectors. A pneumatically operated movable shield plug, opening during the pumpdown phase and closing duringmore » the plasma burn, is selected as the principal design option for shielding the evacuation ducts.« less |
| Databáze: | OpenAIRE |
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