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Tanaka, Shigeru; Abe, Yuichi; Kawabe, Masaru; Kutsukake, Chuzo; Oginuma, Yoshikazu; Yamada, Masayuki; Suzuki, Takumi; Yamanishi, Toshihiko; Konno, Chikara
Journal of Plasma and Fusion Research SERIES, Vol.9, p.338 - 341, 2010/08
We have conducted a small tritium target production R&D for FNS inside JAEA. The tritium target is produced by adsorbing tritium in a thin titanium layer. Since titanium is very active to oxygen, glow discharge cleaning was carried out to remove an oxidation film of the titanium surface. Through many tests with deuterium, we found out that it was not an oxidation film but humidity to disturb tritium absorption. The following procedures were necessary; (1) to outgas the inside of an absorption chamber, (2) to keep environmental humidity under 3% in handling the titanium-deposited substrate, (3) to keep the titanium-deposited target substrate in the vacuum. The DT neutron generation performance of the tritium target produced with the above procedures was the same as that with discharge cleaning. The manufacture condition of the small target was established.
Sato, Satoshi; Verzilov, Y.*; Ochiai, Kentaro; Wada, Masayuki*; Kutsukake, Chuzo; Tanaka, Shigeru; Abe, Yuichi; Seki, Masakazu; Oginuma, Yoshikazu*; Kawabe, Masaru*; et al.
Journal of Nuclear Science and Technology, 44(4), p.657 - 663, 2007/04
Times Cited Count：9 Percentile：54.87(Nuclear Science & Technology)Neutronics experiments have been performed for the solid breeder blanket using a DT neutron source at the FNS facility in JAEA. We have applied the blanket mockup composed of two enriched Li
TiO
and three beryllium layers, and measured the detailed spatial distribution of the tritium production rate (TPR) using enriched LiCO pellets. TPRs in the pellets have been measured by a liquid scintillation counter. Experiments have been done under a condition with a neutron reflector surrounding the DT neutron source. Numerical simulations have been performed using the MCNP-4C with the FENDL-2.0 and JENDL-3.3. The ranges of ratios of calculation results to experimental ones (C/Es) are 0.97-1.17 concerning with local TPR, and 1.04-1.09 for the integrated tritium production. It is found that the total integrated tritium production, which corresponds to tritium breeding ratio, can be predicted within uncertainty of 10% using the Monte Carlo calculation code and latest nuclear data libraries.
Kutsukake, Chuzo; Seki, Masakazu; Tanaka, Shigeru; Oginuma, Yoshikazu*; Abe, Yuichi; Yamauchi, Michinori*
Fusion Science and Technology, 41(3), p.555 - 559, 2002/05
no abstracts in English
Abe, Yuichi; Tanaka, Shigeru; Kawabe, Masaru*; Oginuma, Yoshikazu; Kutsukake, Chuzo; Yamada, Masayuki; Suzuki, Takumi; Yamanishi, Toshihiko; Konno, Chikara
no journal, ,
no abstracts in English
Abe, Yuichi; Tanaka, Shigeru; Oginuma, Yoshikazu; Kawabe, Masaru*; Yamada, Masayuki; Suzuki, Takumi; Yamanishi, Toshihiko; Konno, Chikara
no journal, ,
We succeeded in producing a large tritium target for Fusion Neutronics Source (FNS) inside JAEA. The large tritium target is produced by absorbing tritium in an evaporated thin titanium layer on disk-shaped copper-alloy substrate. It is essential to remove out-gases, particularly humidity, from the titanium layer and substrate because out-gases block the tritium absorption. We developed an adsorption chamber and we found out a condition for the tritium adsorption through many deuterium adsorption tests to the titanium instead of tritium. The tritium adsorption chamber is installed in the glove box of Tritium Processing Laboratory (TPL), and we manufactured a large tritium target. The amount of the adsorbed tritium of the large target was about 26 TBq, and the initial DT neutron generation rate was 1.7
10
n/sec/mA. This performance was very good compared with commercial based large tritium targets.
Abe, Yuichi; Tanaka, Shigeru; Oginuma, Yoshikazu; Yamada, Masayuki; Suzuki, Takumi; Yamanishi, Toshihiko; Konno, Chikara
no journal, ,
We succeeded in producing the large tritium target for Fusion Neutronics Source (FNS) facility. The Large tritium target is produced by absorbing tritium in an evaporated thin titanium layer on disk-shaped copper-alloy substrate. It is essential to remove out-gases, particularly humidity, from the titanium layer and substrate because out-gases block the tritium absorption. We developed a vacuum chamber for the tritium absorption with heater and we found out a condition for the tritium absorption through many deuterium adsorption tests to the titanium instead of tritium. The initial DT neutron generation rate of the produced large tritium target was 1.75 10 n/sec per 1 mA deuteron beam. This performance was very good compared with commercial based large tritium targets.
