Compact Reversed-Field Pinch Reactors (CRFPR): preliminary engineering considerations

Hagenson, R.L.; Krakowski, R.A.; Bathke, C.G.; Miller, R.L.; Embrechts, Mark J.; Schnurr, N.M.; Battat, M.E.; LaBauve, R.J.; Davidson, John

doi:10.2172/6332214

Cited by 19 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the view of reactor engineering, low-q operation is favourable because of its high beta value and high current density at a given tdroidal magnetic field. A high beta value is important for the design of a compact reactor which has a high engineering power density and thus a reduced cost of electricity [27][28][29]. A high current density enables Ohmic ignition or a reduction of the required additional heating power.…”

Section: Introductionmentioning

confidence: 99%

Recent results of ultra low q experiments in TORIUT-6 AND REPUTE-1

Kamada¹,

Fujita

Murakami

et al. 1989

Nucl. Fusion

View full text Add to dashboard Cite

In REPUTE-1, the radiation barrier has been overcome and ion and electron temperatures of ⪅ 0.6 keV (Ti) and ⪅0.3 keV (Te) have been achieved at an electron density of (0.2–0.7) × 1020 m−3 and toroidal beta values of 12-18%. A resistivity anomaly due to m = l kink activity has been observed which may be connected with the peaked temperature profile and the rather broad current density profile. The plasma resistance is lower than that of reversed field pinch discharges in REPUTE-1 and decreases with increasing plasma current. In TORIUT-6, the effects of current ramp-up and carbonization of the first wall have been studied. A hollow current density profile, typical of ultra low q equilibria, is preserved which may be due to the skin current effect. The difference between current ramp-up discharges and standard discharges is the extended duration of the quiescent phase and the preservation of the position of the pitch minimum away from the axis in the ramp-up discharges. After carbonization, the duration of the quiescent phase increases and the plasma resistivity is reduced by 50%.

show abstract

Section: Introductionmentioning

confidence: 99%

Recent results of ultra low q experiments in TORIUT-6 AND REPUTE-1

Kamada¹,

Fujita

Murakami

et al. 1989

Nucl. Fusion

View full text Add to dashboard Cite

show abstract

“…The real promise of AFCs appears to be in the development of HPD systems. 13 ' For those systems that can operate efficiently (i.e., low pre-tested (thermally, hydraulically, electrically) first-wall/blanket/shield/toroidal-field-coil unit would be installed in the reactor hall after off-site fabrication and quality assurance. In addition, a possibility exists for a shortened initial construction and installation period, and the potential for a reduced mean-time-to-repair and more reliable reactor restarts can be traded off with the possibility of decreased mean-time-to-failure.…”

Section: Discussionmentioning

confidence: 99%

“…Three systems that have been studied as power reactors are the Riggatron, 2 " 7 the OHTE 8 " 9 and the CRFPR. 10 " 13 , These devices rely on ohmic heating (OH) to achieve ignition, with the high field tokamak, to varying degrees, also requiring congressional or RF heating.…”

Section: Introduction To Alternative Fusion Conceptsmentioning

confidence: 99%

Technical assessment of critical Plasma-Materials Interaction (PMI) and High Heat Flux (HHF) issues for alternative fusion concepts (AFCs)

Downing¹

1986

View full text Add to dashboard Cite

“…In addition to specifying the equilibrium magnet coils, the neutron-moderating blanket, thermal-cycle efficiency, and auxiliary power requirements are largely derived from the CRFPR design experience, 26 ' 76 (i.e., Li 1 7Pbg3-cooled blanket and a water-cooled first-wall and limiter), although these characteristics must be carefully weighed when applied to the CSR considering the geometry differences. In particular, the CSR has the potential to operate with a natural divertor (i.e., the plasma-gun electrodes), which automatically transports the charged particles to a surface that is exterior to the plasma chamber.…”

Section: Overviewmentioning

confidence: 99%

“…The CRFPR design 26 dealt with the power shed by the plasma (ohmic and alpha-particle power) using in situ water-cooled pumped limiters which, in This costing formalism assumes a "tenth-of-a-kind" plant, which is appropriate for most of the balance of plant, but may be unrealistic for the FPC. Unit costs for the first wall, blanket, shield, and magnet coils are based upon present-day expectations, leading to unit costs that are at least a factor of two greater than the MFE costing guidelines 21 as originally used in STARFIRE.…”

Section: Overviewmentioning

confidence: 99%

The spheromak as a compact fusion reactor

Hagenson¹,

Krakowski²

1987

Self Cite

View full text Add to dashboard Cite

After summarizing the economic and utility-based rationale for compact, higher-power-density fusion reactors, the gun-sustained spheromak concept is explored as one of a number of poloidal-field-dominated confinement configurations that might improve the prospects for economically attractive and operationally simplified fusion power plants. Using a comprehensive physics/engineering/cos ting model for the spheromak, guided by realistic engineering constraints and physics extrapolation, a range of cost-optimized reactor design points is presented, and the sensitivity of cost to key physics, engineering, and operational variables is reported. The results presented herein provide the basis for conceptual engineering designs of key fusion-power-core (FPC) subsystems and more detailed plasma modeling of this promising, high mass-power-density concept, which stresses single-piece FPC maintenance, steady-state current drive through electrostatic magnetic helicity injection, a simplified co-axial electrode-divertor, and efficient resistive-coil equilibrium-field coils. The optimal FPC size and cost estimates project a system that competes aggressively with the best offered by alternative energy sources while simplifying considerably the complexity that has generally been associated with most approaches to magnetic fusion energy. PROJECT CONTINGENCY COST OF MONEY, CONSTRUCTION TIMEETC.

show abstract

Compact Reversed-Field Pinch Reactors (CRFPR): preliminary engineering considerations

Cited by 19 publications

References 0 publications

Recent results of ultra low q experiments in TORIUT-6 AND REPUTE-1

Recent results of ultra low q experiments in TORIUT-6 AND REPUTE-1

Technical assessment of critical Plasma-Materials Interaction (PMI) and High Heat Flux (HHF) issues for alternative fusion concepts (AFCs)

The spheromak as a compact fusion reactor

Contact Info

Product

Resources

About