Evaluation of applicability of laser-based distance meter to measure Li-jet thickness for IFMIF/EVEDA project

Kanemura, Takuji; Kondo, Hiroo; Hoashi, Eiji; Yoshihashi-Suzuki, Sachiko; Yamaoka, Nobuo; Horiike, Hiroshi; Furukawa, Tomohiro; Hirakawa, Yasushi; Wakai, Eiichi

doi:10.1016/j.fusengdes.2014.03.037

Cited by 21 publications

(8 citation statements)

References 12 publications

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“…The laser probe (LP) method [13,14] is a laser-based non-contact method that can be used to measure jet thickness and wave height. We developed the LP method following the analysis method (zero-up crossing method) used in the random-phase/amplitude model, which is also employed in the contact probe method.…”

Section: Non-contact-type Diagnostic Tools and Methodsmentioning

confidence: 99%

Free-Surface Characteristics of a Liquid Li Wall Jet

Kanemura

Kondo

Sugiura

et al. 2016

Plasma and Fusion Research

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In this study, the free-surface characteristics of a liquid Li wall jet for the Li target of the International Fusion Materials Irradiation Facility (IFMIF) are comprehensively reviewed. In developing the IFMIF Li target, a scientific understanding of the free-surface wave characteristics and the development of diagnostic tools to measure these characteristics were critical issues. The same issues must be faced in other liquid metal applications in fusion engineering, such as liquid first walls or liquid diverters. Thus far, diagnostic tools and methods to measure all of the characteristics of waves (i.e., wavelength, wave period, wave speed (free-surface speed), wave height (amplitude)), and average jet thickness have been developed, and the probability distributions applicable to these wave parameters, as well as their statistical characteristic values, have been determined, validating the stability of the IFMIF Li target. Our findings, both the wave characteristics and the diagnostic tools, can be applied to not only the IFMIF Li target but also innovative liquid metal diverters or first walls in fusion engineering. Issues pertaining to liquid-metal freesurface flow applicationsIn general, liquid metals are used at high temperatures. Corrosion and erosion damage of structural materials must be reduced to ensure long-term system integrity. In particular, when using liquid Li, a popular metal in fusion en-

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Section: Non-contact-type Diagnostic Tools and Methodsmentioning

confidence: 99%

Free-Surface Characteristics of a Liquid Li Wall Jet

Kanemura

Kondo

Sugiura

et al. 2016

Plasma and Fusion Research

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“…The stability of the Li target was evaluated by the laser-probe method [5]. Table 3 summarizes the average thickness of the Li target and the mean and maximum wave amplitudes on its surface.…”

Section: Flow Appearance and Stability Of LI Targetmentioning

confidence: 99%

“…The laser-probe method is presented in detail in Ref. [5]. As a result of measurements in the entire beam-footprint zone with an interval of 5-15 mm, a nonuniformity in the beam-footprint zone, which is defined as the maximum minus minimum thickness, was 0.16 mm at the nominal velocity of 15 m/s.…”

Section: Flow Appearance and Stability Of LI Targetmentioning

confidence: 99%

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Validation of IFMIF liquid Li target for IFMIF/EVEDA project

Kondo

Kanemura

Furukawa

et al. 2015

Fusion Engineering and Design

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“…On the other hand, the solubility of nitrogen and hydrogen in lithium is large even at around the melting point of lithium; therefore, both elements should be removed from the liquid lithium chemically with other traps, which are so called hot traps. The related recent activities of lithium purification studies were reported in the references [8][9][10][11][12][13][14][15][16][17][18], and the content of the lithium test facility of IFMIF have been reported in the references [8,9,[19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Hot Trap Design and Manufactures for Lithium Test Loop in IFMIF/EVEDA Project

Wakai

Watanabe

Ito

et al. 2016

Plasma and Fusion Research

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The lithium target facility of IFMIF (International Fusion Materials Irradiation Facility) consists of target assembly, lithium main loop, lithium purification loops, the diagnostic systems, and remote handling system. Major impurities in the lithium loop are proton, deuterium, tritium, 7-Be, activated corrosion products and the other species (C, N, O). It is very important to remove nitrogen content in lithium loop during operation, in order to avoid the corrosion/erosion of the nozzle of lithium target for the stable lithium flow on the target assembly. Nitrogen in the lithium can be removed by N hot trap using Fe-5%Ti alloy at temperatures from 400 to 600• C. In this study, the specification and the detailed design were evaluated, and the component of N hot trap system was fabricated.

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Evaluation of applicability of laser-based distance meter to measure Li-jet thickness for IFMIF/EVEDA project

Cited by 21 publications

References 12 publications

Free-Surface Characteristics of a Liquid Li Wall Jet

Free-Surface Characteristics of a Liquid Li Wall Jet

Validation of IFMIF liquid Li target for IFMIF/EVEDA project

Nitrogen Hot Trap Design and Manufactures for Lithium Test Loop in IFMIF/EVEDA Project

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