Light-weight spherical mirrors for Cherenkov detectors
200310 pages
Published in:
- Nucl.Instrum.Meth.A 496 (2003) 305-314
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Abstract: (Elsevier)
Light-weight spherical mirrors have been appositely designed and built for the gas threshold Cherenkov detectors of the two Hall A spectrometers. The mirrors are made of a 1 mm thick aluminized plexiglass sheet, reinforced by a rigid backing consisting of a phenolic honeycomb sandwiched between two carbon fiber mats epoxy glued. The produced mirrors have a thickness equivalent to 0.55% of radiation length, and an optical slope error of about 5.5 mrad . These characteristics make these mirrors suitable for the implementation in Cherenkov threshold detectors. Ways to improve the mirror features are also discussed in view of their possible employment in RICH detectors.- Mirrors
- Cherenkov detectors
- Cherenkov counter: gas
- Cherenkov counter: threshold
- optics: reflection
- Cherenkov counter: imaging
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