Design and development of the Flibe blanket for helical-type fusion reactor FFHR

Sagara, A.; Yamanishi, Hirokuni; Imagawa, S.; Muroga, T.; Uda, Tsuyoshi; Noda, Tetsuji; Takahashi, S.; Fukumoto, Kazuhiro; Yamamoto, Takuya; Matsui, Hideki; Kohyama, Akira; Hasizume, H.; Toda, Saburo; Shimizu, Akihiko; Suzuki, Akihiro; Hosoya, Yuji; Tanaka, Satoru; Terai, Takayuki; Sze, D.K.; Motojima, O.

doi:10.1016/s0920-3796(00)00360-4

Cited by 70 publications

(18 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fluorine is contained in FLiBe (Li 2 BeF 4 ), which is a promising liquid blanket material in fusion reactors. 4,5) The relevant charged-particle emission reactions of fluorine induced with 14.2 MeV neutrons are tabulated in Table 1 with their reaction Q-values, threshold energies, and cross sections evaluated in JENDL-3.3 6) and ENDF/B-VII.0. 7) Various reaction channels contribute to the charged-particle emission process.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Charged-Particle Emission Double-Differential Cross Section of Fluorine for 14.2MeV Neutrons

Kondo

Murata

Ochiai

et al. 2011

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

We carried out detailed measurement of the double-differential cross sections of fluorine for the emissions of protons, deuterons, tritons, and -particles with 14.2 MeV incident neutrons. An improved charged-particle spectrometer with a pencil DT-neutron beam furnished at the FNS facility of the Japan Atomic Energy Agency enabled us to obtain precise data with a fine energy resolution over a wide energy range and an angular range from 15 to 150 . The present experiment is the first simultaneous measurement of the four different kinds of charged particles and provides useful data to establish a nuclear reaction model of fluorine as well as to confirm previous experimental data. Angular-differential cross sections for several discrete peaks corresponding to excited states of residual nuclei were extracted to discuss the reaction mechanism of charged-particle emission. The obtained data suggest that the charged-particle emission reaction of fluorine has a complicated mechanism in which there are contributions from the direct reaction, pre-equilibrium, and equilibrium processes. The obtained data were compared with the nuclear data evaluated in JENDL-3.3 and ENDF/B-VII.0. The results show large differences in the energy and angular distributions of emitted particles and the charged-particle production cross sections between the measured and evaluated data.

show abstract

Section: Introductionmentioning

confidence: 99%

Measurement of Charged-Particle Emission Double-Differential Cross Section of Fluorine for 14.2MeV Neutrons

Kondo

Murata

Ochiai

et al. 2011

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

show abstract

“…cal Reactor (FFHR) [25], while η i is also determined by the parameters of ITER. The value of η f,α,i is a local parameter in target plasmas and the value at ρ = 0.6 is selected because it can be a representative parameter for ablation in both shallow and deep penetrations.…”

Section: Impact Of Energetic Ions On Pellet Ablationmentioning

confidence: 99%

Observation of the Effect of Energetic Ions on Pellet Ablation in the Large Helical Device

Hoshino

Sakamoto

Yamada

et al. 2006

Plasma and Fusion Research

View full text Add to dashboard Cite

Ablation of a solid hydrogen pellet in hot plasmas was investigated in the Large Helical Device (LHD). The penetration depth of the injected pellets in the experiment was compared to a theoretical model employing ablation due to the heat flux of fast ions as well as thermal electrons. Shallower penetration than that predicted based on the model considering only electrons was observed in LHD plasmas in the presence of highly energetic (up to 180 keV) fast ions due to neutral beam injection (NBI). This discrepancy can be quantified by the contribution of fast ions in terms of the stored energy of fast ions. The ablation model calculation taking into consideration the effect of thermal electrons and fast ions agrees with the experimental results obtained by LHD. Scaling which includes the fast-ion effect on penetration depth in LHD was compared with the wider multi-experiment database (IPADBASE) [L.R. Baylor et al., Nucl. Fusion 37, 445 (1997)].

show abstract

“…Furthermore, due to the generation of 186m Re from nuclear interaction with base elements in the W-alloy, the goal of class-C waste disposal at the end of reactor life cannot be satisfied [11]. 8) The FFHR-2 FW/blanket design is proposed for the helical reactor design [12]. It uses V Á/ 4Cr Á/4Ti alloy as the structural material and Flibe (LiF Á/BeF 2 ) as the coolant and tritium breeder.…”

Section: Design Summarymentioning

confidence: 99%

Advanced high performance solid wall blanket concepts

Wong

Malang

Nishio

et al. 2002

Fusion Engineering and Design

View full text Add to dashboard Cite

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. #

show abstract

Design and development of the Flibe blanket for helical-type fusion reactor FFHR

Cited by 70 publications

References 3 publications

Measurement of Charged-Particle Emission Double-Differential Cross Section of Fluorine for 14.2MeV Neutrons

Measurement of Charged-Particle Emission Double-Differential Cross Section of Fluorine for 14.2MeV Neutrons

Observation of the Effect of Energetic Ions on Pellet Ablation in the Large Helical Device

Advanced high performance solid wall blanket concepts

Contact Info

Product

Resources

About