2016 Fiscal Year Final Research Report
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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| 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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| Free Research Field |
高エネルギー宇宙物理学
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