Search Results - "Otsuka, Kiyomi"

Improvement of micro-vibration of a two-stage Stirling cryocooler by Otsuka, Kiyomi, Kanao, Ken'ichi, Tsunematsu, Shoji, Narasaki, Katsuhiro, Hiratsuka, Yoshikatsu, Yamasaki, Noriko, Mitsuda, Kazuhisa, Nakagawa, Takao, Shinozaki, Keisuke, Sato, Yoichi

“…•2ST coolers are used for cryostat shield cooling or as precoolers for JT coolers.•A design change was implemented to decrease microvibration.•Flexure springs…”
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In-orbit performance of a helium dewar for the soft X-ray spectrometer onboard ASTRO-H by Yoshida, Seiji, Miyaoka, Mikio, Kanao, Ken'ichi, Tsunematsu, Shoji, Otsuka, Kiyomi, Hoshika, Shunji, Narasaki, Katsuhiro, Mitsuda, Kazuhisa, Yamasaki, Noriko, Takei, Yoh, Fujimoto, Ryuichi, Ezoe, Yuichiro, Sato, Yoichi, Okamoto, Atsushi, Noda, Hirofumi, DiPirro, Michael, Shirron, Peter

“…•We developed a hybrid cooling system by using liquid helium, mechanical cryocoolers.•The final liquid helium filling was performed successfully just before…”
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Cryogen free cooling of ASTRO-H SXS Helium Dewar from 300 K to 4 K by Kanao, Ken'ichi, Yoshida, Seiji, Miyaoka, Mikio, Tsunematsu, Shoji, Otsuka, Kiyomi, Hoshika, Shunji, Narasaki, Katsuhiro, Mitsuda, Kazuhisa, Yamasaki, Noriko, Takei, Yoh, Fujimoto, Ryuji, Sato, Yoichi, Okamoto, Atsushi, Noda, Hirofumi, DiPirro, Michel J., Shirron, Peter J.

“…•SXS Dewar has hybrid cooling system combining liquid helium and cryocoolers.•SXS Dewar has cryogen free operation mode without liquid helium.•Cold mass in 4 K…”
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Flight model performance test results of a helium dewar for the soft X-ray spectrometer onboard ASTRO-H by Yoshida, Seiji, Miyaoka, Mikio, Kanao, Ken’ichi, Tsunematsu, Shoji, Otsuka, Kiyomi, Hoshika, Shunji, Mitsuda, Kazuhisa, Yamasaki, Noriko, Takei, Yoh, Fujimoto, Ryuichi, Sato, Yoichi, DiPirro, Mike, Shirron, Peter

“…•We developed a hybrid cooling system by using liquid helium, mechanical coolers.•We had improved the thermal performance from the engineering model.•The…”
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Development of mechanical cryocoolers for the cooling system of the Soft X-ray Spectrometer onboard Astro-H by Sato, Yoichi, Shinozaki, Keisuke, Sugita, Hiroyuki, Mitsuda, Kazuhisa, Yamasaki, Noriko Y., Takei, Yoh, Nakagawa, Takao, Fujimoto, Ryuichi, Murakami, Masahide, Tsunematsu, Shoji, Otsuka, Kiyomi, Yoshida, Seiji, Kanao, Kenichi, Narasaki, Katsuhiro

“…► We have developed Engineering Models of the mechanical cryocoolers for ASTRO-H/SXS. ► Specific cooling power with margin for temperature and drive power was…”
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Five year operation of a cooler Dewar assembly for infrared scanner on board GCOM-C by Kanao, Ken'ichi, Otsuka, Kiyomi, Tsunematsu, Shoji, Amano, Takahiro, Tanaka, Kazuhiro

“…•The Dewar has a single stage Stirling cooler.•The Dewar is designed with low heat leak.•The cooler keeps the detector in 55 K.•The Dewar keeps non-stop…”
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Performance test results of a helium Dewar for the Resolve instrument onboard the XRISM by Yoshida, Seiji, Isshiki, Masahito, Kanao, Ken'ichi, Tsunematsu, Shoji, Otsuka, Kiyomi, Mizunuma, Syou, Takei, Yoh, Hoshino, Akio, Fujimoto, Ryuichi, Ezoe, Yuichiro, Sato, Kosuke, DiPirro, Michael, Shirron, Peter

“…•We developed a hybrid cooling system by using liquid helium, mechanical cryocoolers.•We verified that the Dewar can provide a thermal interface of less than…”
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Cooling system for the Resolve onboard XRISM by Ezoe, Yuichiro, Ishisaki, Yoshitaka, Fujimoto, Ryuichi, Takei, Yoh, Horiuchi, Takafumi, Tsujimoto, Masahiro, Ishikawa, Kumi, Yasuda, Susumu, Yanagase, Keiichi, Shibano, Yasuko, Sato, Kosuke, Kitamoto, Shunji, Yoshida, Seiji, Kanao, Keiichi, Tsunematsu, Shoji, Otsuka, Kiyomi, Mizunuma, Syou, Isshiki, Masahito, Kelley, Richard L., Kilbourne, Calorine A., Porter, Frederick S., DiPirro, Michael J., Shirron, Peter

“…•We designed the cooling system from room temperature to about 1 K for XRISM Resolve.•Based on ASTRO-H (Hitomi) SXS lessons learned, changes on the design are…”
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Outgas analysis of mechanical cryocoolers for long lifetime by Sato, Yoichi, Shinozaki, Keisuke, Sawada, Kenichiro, Sugita, Hiroyuki, Mitsuda, Kazuhisa, Yamasaki, Noriko Y., Nakagawa, Takao, Tsunematsu, Shoji, Otsuka, Kiyomi, Kanao, Kenichi, Yoshida, Seiji, Narasaki, Katsuhiro

“…•Outgas characteristic of the two-stage Stirling cooler was evaluated that the CO and CO2 outgas rates rise in the operating mode and the H2O outgas rate is…”
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Test results after refurbish of cryogenic system for smiles by Otsuka, Kiyomi, Tsunematsu, Shoji, Okabayashi, Akinobu, Narasaki, Katsuhiro, Satoh, Ryota

“…Superconducting Sub-millimeter-wave Limb-Emission Sounder (SMILES) is to be operated aboard the Japanese Experiment Module (JEM) of the International Space…”
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Development of mechanical cryocoolers for Astro-H/SXS by Sato, Yoichi, Sugita, Hiroyuki, Mitsuda, Kazuhisa, Nakagawa, Takao, Fujimoto, Ryuichi, Murakami, Masahide, Otsuka, Kiyomi, Tsunematsu, Shoji, Kanao, Kenichi, Narasaki, Katsuhiro

“…The Soft X-ray Spectrometer (SXS) is a high-resolution spectrometer with an X-ray micro-calorimeter array onboard the Japanese X-ray astronomy satellite…”
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