Vacuum Optics Catalogue - March 2022

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200°C Sapphire Zero Length ViewportsSpecificationSeal TypeMaximumTemperatureBraze200 °C(KF & ISO versions 150°C)Minimum Temperature minus 20 °C200°C Sapphire ZeroLength ViewportsTorr Scientific sapphire viewports are offered in CF, ISO and KF flange styles. The viewports comprise a highquality optic with precise flatness, parallelism, scratch and dig specifications. The single crystal sapphire windowshave excellent optical, physical and chemical properties. The hardest of the oxide crystals, sapphire retainsits high strength at high temperatures. Sapphire has a low coefficient of thermal expansion and low fluorescence,good resistance to thermal shock and scratching making this an excellent material for IR transmittingoptics and robust applications. C-cut sapphire is selected for Torr Scientific sapphire viewports to minimise theeffects of birefringence. The ultra high vacuum (UHV) CF versions are offered using high grade 304L or 316LNstainless steel flanges. Non-magnetic viewports are offered for low energy applications or surface science applicationsneeding low magnetic fields. The non-magnetic viewports use a non-magnetic weld ring instead ofthe regular kovar weld ring. Flanges in 304L stainless steel are used for the high vacuum KF and ISO viewports.TSL viewports are manufactured in cleanroom conditions and helium leak tested, cleaned and packed to UHVstandards. The rugged construction of the sapphire viewports allows repeated bake-out to 200 °C with UHVperformance, whilst the window offers broadband optical transmission through vacuum UV, visible to nearinfra-red. Various anti-reflective coatings to match customer reflectance requirements are processed at TSLand available as options listed in the AR coated viewport data sheets. Non-standard viewports can be manufacturedon request, including re-entrant style microscope/camera viewports. Annealed copper gaskets andother component accessories are also supplied by TSL.Transmission Curve - SapphireMaximum Rate ofTemperature ChangeLeak RatePressure RangeSurface QualityFlatness3 °C per minute<1x10 -10 atm-cc/sec (He)1 bar to 1x10 -11 mbar60/40 scratch/dig< 8λPlease note that the optical transmission curves are approximations and should be used for reference only32Copyright ©www.torrscientific.co.ukSkip to Contents
200°C Sapphire Zero Length ViewportsCF-1KF-1ISO-1CF-2KF-2ISO-2CF-3Part NumberFlangeTypeA(mm)KF-3B(mm)C(mm)D(mm)DiagramISO-3FlangeMaterialWeld RingMaterialVPZ16S-200 NW16CF 34 15 1.5 12.7 CF-1 304L KovarVPZ16S-LN-200 NW16CF 34 15 1.5 12.7 CF-1 316LN KovarVPZ16S-NM-200 NW16CF 34 15 1.5 12.7 CF-1 316LN Non-MagneticKVPZ16S-200 KF16 25 15 1.5 12.7 KF-1 304L KovarKVPZ25S-200 KF25 40 20 1.5 18.5 KF-2 304L KovarVPZ23S-200 NW35CF 70 23 1.5 12.7 CF-1 304L KovarVPZ38S-200 NW35CF 70 32 1.5 12.7 CF-3 304L KovarVPZ38LAS-200 NW35CF 70 38 1.5 12.7 CF-2 304L KovarVPZ38S-LN-200 NW35CF 70 32 1.5 12.7 CF-1 316LN KovarVPZ38LAS-LN-200 NW35CF 70 38 1.5 12.7 CF-2 316LN KovarVPZ38S-NM-200 NW35CF 70 32 1.5 12.7 CF-1 316LN Non-MagneticKVPZ40/32S-200 KF40 55 32 1.5 12.7 KF-1 304L KovarKVPZ40S-200 KF40 55 38 1.5 18.5 KF-3 304L KovarKVPZ50S-200 KF50 75 38 1.5 15 KF-3 304L KovarVPZ64S-200 NW63CF 114 63 2 17.4 CF-1 304L KovarVPZ64S-LN-200 NW63CF 114 63 2 17.4 CF-1 316LN KovarVPZ64S-NM-200 NW63CF 114 63 2 17.4 CF-1 316LN Non-MagneticISO63SVPZ-200 ISO63 95 38 1.5 12 ISO-1 304L KovarVPZ100S-200 NW100CF 152 89 2.5 19.9 CF-3 304L KovarVPZ100S-LN-200 NW100CF 152 89 2.5 19.9 CF-3 316LN KovarVPZ100S-NM-200 NW100CF 152 89 2.5 19.9 CF-3 316LN Non-MagneticISO100SVPZ-200 ISO100 130 63 2 12 ISO-2 304L KovarVPZ150S-200 NW150CF 203 136 4 22.3 CF-3 304L KovarVPZ150S-LN-200 NW150CF 203 136 4 22.3 CF-3 316LN KovarVPZ150S-NM-200 NW150CF 203 136 4 22.3 CF-3 316LN Non-MagneticISO160SVPZ-200 ISO160 180 89 2.5 12 ISO-3 304L KovarVPZ200S-200 NW200CF 254 136 4 24.5 CF-3 304L Kovar200°C Sapphire ZeroLength Viewportswww.torrscientific.co.uk 33Skip to ContentsCopyright ©
Page 2 and 3: Issue March 20222Copyright ©www.to
Page 4 and 5: ContentsCompany Introduction ......
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Page 8 and 9: FacilitiesFacilitiesAll brazed and
Page 10 and 11: Product IntroductionViewportsTorr S
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Page 14 and 15: Fused Silica Zero Length ViewportsF
Page 16 and 17: Bonded Fused Silica Zero Length Vie
Page 18 and 19: Fused Silica Re-Entrant ViewportsSp
Page 20 and 21: Kodial Zero Length ViewportsSpecifi
Page 22 and 23: Kodial Zero Length Viewports with I
Page 24 and 25: Kodial Zero Length Viewportswith X-
Page 26 and 27: Kodial Zero Length Viewports withIT
Page 28 and 29: Non-Magnetic Kodial Zero Length Vie
Page 30 and 31: Kodial Re-Entrant ViewportsSpecific
Page 34 and 35: High Temperature Sapphire Zero Leng
Page 36 and 37: Zinc Selenide Zero Length Viewports
Page 38 and 39: Magnesium Fluoride Zero Length View
Page 40 and 41: Calcium Fluoride Zero Length Viewpo
Page 42 and 43: Barium Fluoride Zero Length Viewpor
Page 44 and 45: CVD Diamond UHV ViewportsSpecificat
Page 46 and 47: Quartz Natural Z-Cut Zero Length Vi
Page 48 and 49: Differentially-pumped ViewportsSpec
Page 50 and 51: Fused Silica UHV Laser Viewportswit
Page 52 and 53: Fused Silica UHV Viewportswith Anti
Page 54 and 55: Fused Silica UHV Viewportswith Broa
Page 56 and 57: Fused Silica UHV Viewportswith ‘W
Page 58 and 59: Kodial Zero Length Viewportswith An
Page 60 and 61: Kodial Zero Length Viewportswith Br
Page 62 and 63: Kodial Zero Length Viewportswith
Page 64 and 65: Kodial Zero Length Viewportswith
Page 66 and 67: Sapphire viewports with Anti-Reflec
Page 68 and 69: Sapphire viewports withBroadband An
Page 70 and 71: Sapphire viewports with‘VAR’ An
Page 72 and 73: AR CoatedZinc Selenide ZeroLength V
Page 74 and 75: AR Coated Zinc Selenide Zero Length
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Page 78 and 79: Glass to Metal SealsCF Tubulated Ko
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KF and ISO Centering RingsSpecifica
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CF Copper GasketsSpecificationMater
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Clamps and FastenersKF Swing Clamps
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Atom Trap ChambersSpecificationBody
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Viewport ShuttersFeaturesManual or
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OpticsFused SilicaFused Silica is a
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Attenuation Filter WheelsSpecificat
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CVD DiamondSpecificationTolerance o
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Ceramic BreaksSpecificationSeal Typ
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UHV CF RHEED ScreensCF ViewportCF V
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IndexPart NumberATC-10PC 89ATC-10PU
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IndexPart NumberKVPZ50QWAR 57KVPZ50
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IndexPart NumberVPZ150WAR-LN 65VPZ1
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118Copyright ©www.torrscientific.c
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Vacuum Optics Catalogue - March 2022

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