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CVD Diamond UHV
CVD Diamond UHV Viewports are offered as standard in CF flanges, but can be supplied in ISO, KF, or custom-designed flanges on request.
- Description
- Specifications
- Transmission Curve - CVD Diamond
- Additional Details
- Options
Description
The viewports comprise a diamond window which is synthetically produced by a chemical vapor deposition (CVD) process. The ultra-high vacuum (UHV) CF versions are offered using high-grade 304L or 316LN stainless steel flanges. TSL viewports are manufactured in cleanroom conditions and helium leak tested, cleaned, and packed to UHV standards.
The rugged construction of the CVD Diamond viewports allows repeated bake-out with UHV performance.The transmission properties of the CVD Diamond extend from visible through FIR (far-infrared) to beyond 100 microns. The window is polished to a surface roughness of 30nm Ra, has high thermal conductivity, and good bio-compatibility. Various anti-reflective coatings to match customer reflectance requirements are also processed at TSL. Non-standard viewports can be manufactured on request, including re-entrant style microscope/camera viewports. Annealed copper gaskets and other component accessories are also supplied by TSL.
| Seal Type: | Braze |
|---|---|
| Maximum Temperature: | 450 °C (304L), 600 °C (316LN) |
| Minimum Temperature: | -20 °C |
| Maximum Rate of Temperature Change: | 3 °C per minute |
| Window Roughness: | 30nm Ra |
| Leak Rate: | <1×10-10 atm-cc/sec (He) |
| Pressure Range: | 1 bar to 1×10-11 mbar |
