JOPSS - Search Results

Journal Articles

Temperature dependence of the transmission loss in KU-1 and KS-4V quartz glasses for the ITER diagnostic window

Nishitani, Takeo; Sugie, Tatsuo; Morishita, Norio; Yokoo, Noriko*

Fusion Engineering and Design, 74(1-4), p.871 - 874, 2005/11

https://doi.org/10.1016/j.fusengdes.2005.06.183

Times Cited Count：13 Percentile：65.42(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Applicability study on existing dosimetry systems to high-power Bremsstrahlung irradiation

Mehta, K.*; Kojima, Takuji; Sunaga, Hiromi

Radiation Physics and Chemistry, 68(6), p.959 - 962, 2003/12

https://doi.org/10.1016/j.radphyschem.2003.08.007

Times Cited Count：3 Percentile：25.79(Chemistry, Physical)

Applicability of the existing dosimetry systems to high-power Bremsstrahlung irradiation was investigated through a dose intercomparison study, where several dosimeters were irradiated in the dose range 4-12 kGy in identical polyethylene phantoms in a Bremsstrahlung beam obtained from a 5-MeV electron accelerator. Included in the study were alanine dosimeters molded by three different binders, three types of liquid dosimeters:ceric-cerous, dichromate and ethanol-chlorobenzen (ECB), and glutamine powder. The dosimeter responses for Bremsstrahlung radiation were analyzed at the issuing laboratories, and the dose values determined using calibration based on cobalt-60 -ray irradiation. Dose values for all the three dose levels for all dosimetry systems were in good agreement of better than 3%. The results of the study demonstrate that these existing dosimetry systems have a potential for application to high-power Bremsstrahlung irradiation.

Journal Articles

Development of in-vessel neutron monitor using micro-fission chambers for ITER

Yamauchi, Michinori*; Nishitani, Takeo; Ochiai, Kentaro; Morimoto, Yuichi*; Hori, Junichi; Ebisawa, Katsuyuki*; Kasai, Satoshi; Walker, C.*

Review of Scientific Instruments, 74(3), p.1730 - 1734, 2003/03

https://doi.org/10.1063/1.1534397

Times Cited Count：22 Percentile：70.93(Instruments & Instrumentation)

no abstracts in English

JAEA Reports

Performance test of micro-fission chambers for in-vessel neutron monitoring of ITER

Yamauchi, Michinori*; Nishitani, Takeo; Ochiai, Kentaro; Morimoto, Yuichi*; Hori, Junichi; Ebisawa, Katsuyuki*; Kasai, Satoshi

JAERI-Tech 2002-032, 41 Pages, 2002/03

JAERI-Tech-2002-032.pdf:2.62MB

A micro-fission chamber and a dummy chamber without uranium were fabricated and the performance was tested. They are designed to be installed inside the vacuum vessel of compact ITER (ITER-FEAT) for neutron monitoring. Vacuum leak rate of the chamber, resistances between central conductor and outer sheath, and mechanical strength up to 50G acceleration were confirmed to meet design criteria. Gamma-ray sensitivity was measured with $^{60}$ Co gamma-ray irradiation facility at JAERI Takasaki. The output signals for gamma-rays in Campbelling mode were estimated to be less than 0.1% those by neutrons at the location behind the blanket module in ITER-FEAT. Detector response for 14 MeV neutrons was investigated with the FNS facility. Excellent linearity between count rates and neutron fluxes was confirmed. According to the test for the change of surrounding materials, the sensitivity was enhanced by slow-downed neutrons, which agreed with the calculation result by MCNP-4C code. As a result, it was concluded that the developed micro-fission chamber is applicable for ITER-FEAT.

Journal Articles

The Latest news in Thailand; Stay in Thailand as the international technical coordinator

Yamaki, Jikei

Hoshasen To Sangyo, (88), p.61 - 66, 2000/12

http://ci.nii.ac.jp/naid/40004433177

no abstracts in English

JAEA Reports

Development of welding technique by remote control at the JMTR hot laboratory

Shimizu, Michio; Iwamatsu, Shigemi; Takada, Fumiki; Sozawa, Shizuo; Kawamata, Kazuo; Oshima, Kunio; Tsuchiya, Kunihiko; Yamaura, Takayuki; Matsui, Yoshinori; Iwai, Takashi; et al.

JAERI-Tech 2000-029, p.48 - 0, 2000/03

JAERI-Tech-2000-029.pdf:9.26MB

no abstracts in English

Journal Articles