| Autor: |
Rebecca K. Butlin, E. G. Dzenitis, David A. Martin, Gregory A. Sherman, William H. Gourdin, William H. Kent, Kalvin Listiyo, Christopher J. Stolz, James A. Pryatel |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| Popis: |
We describe a system to inspect and remove surface debris in-situ from the surfaces of upward-facing mirrors that transport 1053 nm laser light to the target chamber of the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory. Grazing angle (2-5°) illumination with a bar light highlights debris ≈10 mm in size and larger, which is then viewed through windows in the enclosures of selected mirrors. Debris is removed with 1-second bursts of high velocity (76 m/s) clean air delivered across the optic surfaces by a commercially available linear nozzle ("gas knife"). Experiments with aluminum, stainless steel, glass and polystyrene particles of various sizes >30 mm show that particle removal efficiency is near 100% over most of the mirror surfaces for all sizes tested. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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