Neutron wall loading of Tokamak reactors

Wong, C.P.C.

doi:10.1016/s0022-3115(00)00145-8

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…Converting from fluence to flux requires a knowledge of first wall replacement time, cost of wall replacement, loss of revenue during down time, maximum acceptable output power of the plant, material properties of the wall, etc. [41]. To avoid these complications, we shall, for simplicity, require that 2 2.5 MW/m W P  , despite its inappropriateness as a rigorously valid limit The value of the neutron wall loading power flux is determined from…”

Section: Nuclear Constraintsmentioning

confidence: 99%

“…The limit is often characterized in the literature by a maximum allowable wall loading power flux denoted by P W . Typical values lie in the range P W ∼ 2-4 MW m −2 [12,[49][50][51][52][53].…”

Section: Neutron Wall Loading Constraintmentioning

confidence: 99%

“…The reason is that the damage limit is a consequence of accumulated high energy neutron fluence rather than instantaneous power flux. Converting from fluence to flux requires a knowledge of first wall replacement time, cost of wall replacement, loss of revenue during down time, maximum acceptable output power of the plant, material properties of the wall, etc [49]. To avoid these complications, we shall, for simplicity, require that P W < 2.5 MW m −2 , despite its inappropriateness as a rigorously valid limit.…”

Section: Neutron Wall Loading Constraintmentioning

confidence: 99%

See 2 more Smart Citations

Steady state versus pulsed tokamak reactors

Segal¹,

Cerfon²,

Freidberg³

2021

Nucl. Fusion

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We have carried out a detailed analysis that compares steady state versus pulsed tokamak reactors. The motivations are as follows. Steady state current drive has turned out to be more difficult than expected—it takes too many watts to drive an ampere, which has a negative effect on power balance and economics. This is partially compensated by the recent development of high temperature REBCO superconductors, which offers the promise of more compact, lower cost tokamak reactors, both steady state and pulsed. Of renewed interest is the reduction in size of pulsed reactors because of the possibility of higher field Ohmic transformers for a given required pulse length. Our main conclusion is that pulsed reactors may indeed be competitive with steady state reactors and this issue should be re-examined with more detailed engineering level studies.

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Section: Nuclear Constraintsmentioning

confidence: 99%

Section: Neutron Wall Loading Constraintmentioning

confidence: 99%

Section: Neutron Wall Loading Constraintmentioning

confidence: 99%

See 1 more Smart Citation

Steady state versus pulsed tokamak reactors

Segal¹,

Cerfon²,

Freidberg³

2021

Nucl. Fusion

View full text Add to dashboard Cite

show abstract

“…At least for the tokamak reactors with the output power range of 1 Á/2 GW(e), the selected FW/blanket designs cover the optimum neutron wall loading range of 4Á/7 MW/m 2 when the cost of electricity is taken into consideration [22].…”

Section: High Power Densitymentioning

confidence: 99%

Advanced high performance solid wall blanket concepts

Wong

Malang

Nishio

et al. 2002

Fusion Engineering and Design

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First wall and blanket (FW/blanket) design is a crucial element in the performance and acceptance of a fusion power plant. High temperature structural and breeding materials are needed for high thermal performance. A suitable combination of structural design with the selected materials is necessary for D Á/T fuel sufficiency. Whenever possible, low afterheat, low chemical reactivity and low activation materials are desired to achieve passive safety and minimize the amount of high-level waste. Of course the selected fusion FW/blanket design will have to match the operational scenarios of high performance plasma. The key characteristics of eight advanced high performance FW/blanket concepts are presented in this paper. Design configurations, performance characteristics, unique advantages and issues are summarized. All reviewed designs can satisfy most of the necessary design goals. For further development, in concert with the advancement in plasma control and scrape off layer physics, additional emphasis will be needed in the areas of first wall coating material selection, design of plasma stabilization coils, consideration of reactor startup and transient events. To validate the projected performance of the advanced FW/blanket concepts the critical element is the need for 14 MeV neutron irradiation facilities for the generation of necessary engineering design data and the prediction of FW/blanket components lifetime and availability. #

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Cost sensitivity analysis for a 100MWe modular power plant and fusion neutron source

Woodruff

Miller²

2015

Fusion Engineering and Design

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Neutron wall loading of Tokamak reactors

Cited by 3 publications

References 4 publications

Steady state versus pulsed tokamak reactors

Steady state versus pulsed tokamak reactors

Advanced high performance solid wall blanket concepts

Cost sensitivity analysis for a 100MWe modular power plant and fusion neutron source

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