Development of a concave grating for measurement of the solar-chromospheric magnetic fields in hydrogen Lyman alpha
Project/Area Number |
23340052
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Astronomy
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Research Institution | National Astronomical Observatory of Japan |
Principal Investigator |
HARA Hirohisa 国立天文台, SOLAR-C準備室, 准教授 (20270457)
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Co-Investigator(Renkei-kenkyūsha) |
KANO Ryohei 国立天文台, SOLAR-C 準備室, 助教 (70321586)
NARUKAGE Noriyuki 国立天文台, 先端技術センター, 特任研究員 (50435806)
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Project Period (FY) |
2011-11-18 – 2014-03-31
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
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Keywords | 太陽物理学 / 光学 / 宇宙物理学 / 宇宙科学 |
Research Abstract |
In this study we have developed a holographically-ruled spherical concave grating with a laminar groove shape in collaboration with a domestic optics company for a sounding-rocket experiment CLASP (Chromospheric Lyman-Alpha Spectro-Polarimeter). The measurement of magnetic fields in the solar chromosphere and the transition region is the primary objective of the experiment by detecting the linear polarization through a spectro-polarimetric observation in the hydrogen Lyman alpha at 121.6 nm. The evaluation after the fabrication of the master grating of 3000 grooves/mm with an effective area within 110 mm in diameter shows that we have succeeded to develop a spherical concave grating with a high absolute grating efficiency of 25+/-5%, which satisfies the specification of the CLASP. We also developed a UV light-source system for evaluation of the grating performance in imaging spectroscopy.
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Report
(4 results)
Research Products
(16 results)
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[Journal Article] Birefringence of magnesium fluoride in the vacuum ultraviolet and application to a half-waveplate2013
Author(s)
R. Ishikawa, R. Kano, T. Bando, Y. Suematsu, S. Ishikawa, M. Kubo, N. Narukage, H. Hara, S. Tsuneta, H. Watanabe, K. Ichimoto, K. Aoki and K. Miyagawa
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Journal Title
Applied Optics
Volume: vol. 52
Issue: 34
Pages: 8205-8211
DOI
Related Report
Peer Reviewed
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[Presentation] 太陽Lyα線偏光分光観測ロケット実験CLASP のSlit-jaw 光学系試作品の評価2014
Author(s)
久保雅仁, 末松芳法, 鹿野良平, 坂東貴政, 原弘久, 勝川行雄, 成影典之, 常田佐久, 春日恵美, 青木邦哉, K. Kobayashi
Organizer
日本天文学会
Place of Presentation
国際基督教大学(東京都)
Year and Date
2014-03-20
Related Report
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[Presentation] 真空紫外線に特化した高精密MgF2 波長板の開発2014
Author(s)
石川遼子, 鹿野良平, 坂東貴政, 末松芳法, 石川真之介, 久保雅仁, 成影典之, 原弘久, 常田佐久, 渡邉皓子, 一本潔, 青木邦哉, 宮川健太
Organizer
日本天文学会
Place of Presentation
国際基督教大学(東京都)
Year and Date
2014-03-20
Related Report
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[Presentation] Lyα線偏光分光観測ロケット実験CLASP の進捗状況とその観測計画2014
Author(s)
鹿野良平, 坂東貴政, 成影典之, 石川遼子, 久保雅仁, 勝川行雄, 石川真之介, 加藤成晃, Giono Gabriel, 原弘久, 末松芳法, 清水敏文, 坂尾太郎, 宮川健太, 後藤基志, K. Kobayashi, J. Trujillo Bueno, and F. Auchere
Organizer
日本天文学会
Place of Presentation
国際基督教大学(東京都)
Year and Date
2014-03-20
Related Report
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[Presentation] 太陽彩層Lyα線偏光分光観測装置CLASP で用いる凹面回折格子の波長分解能評価法の構築2012
Author(s)
久保雅稔, 鹿野良平, 坂東貴政, 木挽俊彦, 石川遼子, 久保雅仁, 勝川行雄, 原弘久, 常田佐久, 成影典之, K. Kobayashi, D. Song
Organizer
日本天文学会
Place of Presentation
龍谷大学(京都府)
Year and Date
2012-03-20
Related Report
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