Development of very-light segmented mirrors using chemically strengthened glasses for the CTA Large Size Telescopes
| Project/Area Number |
15K17640
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 解像型大気チェレンコフ望遠鏡 / 高エネルギーガンマ線 / CTAプロジェクト |
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| Outline of Final Research Achievements |
We selected “Dragontrail X” for the new chemically strengthened glasses. Our conclusion is that the current 2.7mm thick soda glasses can be replaced by “Dragontrail X” with a 2.0mm thick to aim for the very-light segmented mirrors. Our full size segmented mirrors for the CTA Large Size Telescopes showed no damage after extensive temperature cycling tests. For the quality control during the mass production phase, we have successfully established a new `2f’ measurement system, which uses a point light source to measure the surface qualities of mirrors such as curvature radius and imaging performance. The system has been adapted as one of standard measurement systems for the CTA quality control.
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Report
(3 results)
Research Products
(14 results)
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[Journal Article] Minute-timescale >100 MeV γ-Ray Variability during the Giant Outburst of Quasar 3C 279 Observed by Fermi-LAT in 2015 June2016
Author(s)
Ackermann, M.,Anantua, R.,,,Hayashida,M.,,,et al (Fermi-LAT Collaboration, alphabetical order)
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Journal Title
The Astrophysical Journal Letters
Volume: 824
Issue: 2
Pages: L20-L20
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] The Optical system for the Large Size Telescope of the Cherenkov Telescope Array2015
Author(s)
M. Hayashida, K. Noda, M. Teshima, U. Barres de Almeida, M. Chikawa, N. Cho, S. Fukami, A. Gadola, Y. Hanabata, D. Horns, C. Jablonski, H. Katagiri, M. Kagaya, M. Ogino, A. Okumura, T. Saito, R. Stadler, S. Steiner, U. Straumann, A. Vollhardt, H. Wetteskind, T. Yamamoto and T. Yoshida for the CTA Consortium
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Journal Title
Proceedings of Science (the 34th International Cosmic Ray Conference)
Volume: PoS(ICRC2015)
Pages: 927-927
Related Report
Open Access / Int'l Joint Research / Acknowledgement Compliant
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