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Production of 400 mirrors with high VUV reflectivity for use in the SLD Cherenkov ring imaging detector |
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| Affiliation: | a Department of Physics, Tohoku University, Aramaki, Sendai 980, Japan b Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309, USA c Department of Physics, University of California, Santa Barbara, CA 93106, USA d Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, CA 95064, USA e Serin Physics Laboratory, Rutgers University, PO Box 849, Piscataway, NJ 08855, USA f Department of Physics, University of Cincinnati, Cincinnati, OH 45221, USA g Department of Physics, Boston University, Boston, MA 02215, USA |
| Abstract: | The Stanford Large Detector for experimental particle physics detection at the SLAC Linear Collider contains a Cherenkov ring imaging detector (CRID). The barrel CRID mirrors have been successfully produced and installed. The industrial mirror production process, the quality control of the mirrors produced, and the results of the vacuum ultraviolet (VUV) reflectivity and mirror-shape accuracy are described. An average reflectivity of at least 80% for light at 160 nm and 85% for light in the 180–230 nm wavelength range has been achieved in the production of over 400 mirrors of a typical size of 30 by 30 cm. The surface roughness and optical distortion measurements imply that the light loss due to scattering is a few percent of the incident light and the angular error due to shape distortion is less than 1 mrad. |
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