Final 3-D Neutronics Results

ARIES Electronic Project Meeting
December 4, 1998

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Radiation Streaming

Inboard power losses (and thus COE) minimize near 20 cm thick shield

Net i/b power losses (in MW_th)=

PW /h + NH_CP + PP/h - [SH + NH_FW/Shell + NH_shield + 0.9 PP ]

	where	PW is CP Joule losses,
		h is thermal conversion efficiency,
		SH is Surface Heating,
		NH is Nuclear Heating,
		PP is He Pumping Power (90% of PP is recovered as thermal heat)

Designs with i/b shields thinner than 20 cm will have higher COE (and lower breeding, higher CP damage, shorter CP lifetime, higher Cu radwaste stream, and higher CP decay heat)