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Mirror production for the Cherenkov telescopes of the ASTRI mini-array and the MST project for the Cherenkov Telescope Array
- Source :
- Journal of astronomical telescopes, instruments, and systems 8, 014005 (2022). doi:10.1117/1.JATIS.8.1.014005, SPIE Optical Engineering + Applications, San Diego, United States, 2019-08-11-2019-08-15
- Publication Year :
- 2022
- Publisher :
- SPIE, 2022.
-
Abstract
- SPIE Optical Engineering + Applications, San Diego, United States, 11 Aug 2019 - 15 Aug 2019; Journal of astronomical telescopes, instruments, and systems 8, 014005 (2022). doi:10.1117/1.JATIS.8.1.014005<br />The Cherenkov Telescope Array (CTA) is the next ground-based γ-ray observatory in the TeV γ-ray spectral region operating with the Imaging Atmospheric Cherenkov Technique. It is based on almost 70 telescopes of different class diameters - LST, MST and SST of 23, 12, and 4 m, respectively - to be installed in two sites in the two hemispheres (at La Palma, Canary Islands, and near Paranal, Chile). Several thousands of reflecting mirror tiles larger than 1 m$^2$ will be produced for realizing the segmented primary mirrors of a so large number of telescopes. Almost in parallel, the ASTRI Mini-Array (MA) is being implemented in Tenerife (Canary Islands), composed of nine 4 m diameter dual-mirror Cherenkov telescopes (very similar to the SSTs). We completed the mirror production for all nine telescopes of the ASTRI MA and two MST telescopes (400 segments in total) using the cold glass slumping replication technology. The results related to the quality achieved with a so large-scale production are presented, also discussing the adopted testing methods and approaches. They will be very useful for the adoption and optimization of the quality assurance process for the huge production (almost 3000 m$^2$ of reflecting surface) of the MST and SST CTA telescopes.<br />Published by SPIE, [Bellingham, Wash.]
- Subjects :
- Cherenkov Telescope Array
cold-slumping technology
Spherical lenses
FOS: Physical sciences
quality: monitoring
fabrication
hot-slumpìing technology
quality assurance
Reflectivity
monitoring [quality]
Atmospheric Cherenkov telescopes
ddc:530
Solids
ASTRI
mirror
Instrumentation and Methods for Astrophysics (astro-ph.IM)
Instrumentation
activity report
CTA
Mechanical Engineering
Glasses
coating
Astronomy and Astrophysics
Point spread functions
Electronic, Optical and Magnetic Materials
Mirrors
Cherenkov counter
Space and Planetary Science
Control and Systems Engineering
dual mirror
Astrophysics - Instrumentation and Methods for Astrophysics
performance
Telescopes
Aluminum
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Journal of astronomical telescopes, instruments, and systems 8, 014005 (2022). doi:10.1117/1.JATIS.8.1.014005, SPIE Optical Engineering + Applications, San Diego, United States, 2019-08-11-2019-08-15
- Accession number :
- edsair.doi.dedup.....b5fbcc52644e0364b231d18011c6df0a