Vacuum Optics Catalogue - June 2021

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High Temperature Sapphire Zero Length ViewportsSpecificationSeal TypeMaximumTemperatureBraze300 °CMinimum Temperature minus 20 °CHigh temperatureSapphire ZeroLength ViewportsMaximum Rate ofTemperature ChangeLeak RatePressure RangeSurface QualityFlatness3 °C per minute<1x10 -10 atm-cc/sec (He)1 bar to 1x10 -11 mbar60/40 scratch/digTorr Scientific sapphire viewports are offered on CF flanges. The viewports comprise a high quality optic withprecise flatness, parallelism, scratch and dig specifications. The single crystal sapphire windows have excellentoptical, physical and chemical properties. The hardest of the oxide crystals, sapphire retains its high strengthat high temperatures. Sapphire has a low coefficient of thermal expansion and low fluorescence, good resistanceto thermal shock and scratching making this an excellent material for IR transmitting optics and robustapplications. C-cut sapphire is selected for Torr Scientific sapphire viewports to minimise the effects of birefringence.The ultra high vacuum (UHV) CF versions are offered using high grade 316LN stainless steel flanges.Non-magnetic viewports are offered for low energy applications or surface science applications needing lowmagnetic fields. The non-magnetic viewports use a non-magnetic weld ring instead of the regular kovar weldring. TSL viewports are manufactured in cleanroom conditions and helium leak tested, cleaned and packedto UHV standards. The rugged construction of the sapphire viewports allows repeated bake-out to 300 °Cwith UHV performance, whilst the window offers broadband optical transmission through vacuum UV, visibleto near infra-red. Various anti-reflective coatings to match customer reflectance requirements are processedat TSL and available as options listed in the AR coated viewport data sheets. Non-standard viewports can bemanufactured on request, including re-entrant style microscope/camera viewports. Annealed copper gasketsand other component accessories are also supplied by TSL.< 8λTransmission Curve - SapphirePlease note that the optical transmission curves are approximations and should be used for reference only34Copyright ©www.torrscientific.co.ukSkip to Contents
High Temperature Sapphire Zero Length ViewportsCF-1 CF-2 CF-3Part NumberFlangeTypeA(mm)B(mm)C(mm)D(mm)DiagramFlangeMaterialWeld RingMaterialVPZ16S NW16CF 34 15 1.5 12.7 CF-1 304L KovarVPZ16S-LN NW16CF 34 15 1.5 12.7 CF-1 316LN KovarVPZ16S-NM NW16CF 34 15 1.5 12.7 CF-1 316LN Non-MagneticVPZ23S NW35CF 70 23 1.5 12.7 CF-1 304L KovarVPZ38S NW35CF 70 32 1.5 12.7 CF-3 304L KovarVPZ38LAS NW35CF 70 38 1.5 12.7 CF-2 304L KovarVPZ38S-LN NW35CF 70 32 1.5 12.7 CF-1 316LN KovarVPZ38LAS-LN NW35CF 70 38 1.5 12.7 CF-2 316LN KovarVPZ38S-NM NW35CF 70 32 1.5 12.7 CF-1 316LN Non-MagneticVPZ64S-NM NW63CF 114 63 2 17.4 CF-1 316LN Non-MagneticVPZ100S-NM NW100CF 152 89 2.5 19.9 CF-3 316LN Non-MagneticVPZ150S-NM NW150CF 203 136 4 22.3 CF-3 316LN Non-MagneticHigh TemperatureSapphire ZeroLength Viewportswww.torrscientific.co.uk 35Skip to ContentsCopyright ©
Page 2 and 3: Issue June 20212Copyright ©www.tor
Page 4 and 5: ContentsCompany Introduction ......
Page 6 and 7: 6www.torrscientific.co.ukSkip to Co
Page 8 and 9: FacilitiesFacilitiesAll brazed and
Page 10 and 11: Product IntroductionViewportsTorr S
Page 12 and 13: 12www.torrscientific.co.ukSkip to C
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 32 and 33: 200°C Sapphire Zero Length Viewpor
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
Page 80 and 81: 80Copyright ©www.torrscientific.co
Page 82 and 83: KF and ISO Centering RingsSpecifica
Page 84 and 85:
CF Copper GasketsSpecificationMater
Page 86 and 87:
Clamps and FastenersKF Swing Clamps
Page 88 and 89:
Atom Trap ChambersSpecificationBody
Page 90 and 91:
Viewport ShuttersFeaturesManual or
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Page 96 and 97:
OpticsFused SilicaFused Silica is a
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Attenuation Filter WheelsSpecificat
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100www.torrscientific.co.ukSkip to
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CVD DiamondSpecificationTolerance o
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Page 106 and 107:
Ceramic BreaksSpecificationSeal Typ
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108Copyright ©www.torrscientific.c
Page 110 and 111:
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 - June 2021

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