Ultra High Vacuum Crystal Window

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Ultra High Vacuum Crystal Window

Distortion-Free Window for High-Precision Measurement and Laser Transmission
The only product in the world to meet the rigorous adoption standards of the International Thermonuclear Experimental Reactor (ITER), a global project promoted by Japan, the United States, the EU, Russia, China, and South Korea. This ultra-high vacuum window enables observation and measurement inside vacuum vessels. Using a unique sealing technology, various crystalline and quartz window materials are elastically bonded and mounted to a metallic structure, allowing reliable operation in ultra-high vacuum environments.

Jointly developed with the Japan Atomic Energy Agency (JAEA). PAT・P (Patent Pending)

Window Materials

CaF2, MgF2, LiF, Ge, Si, KRS-5, BK7, Crystal Quartz, A12O3, Lead Glass, SiO2

Dimensions (Standard Type)

Model Number	Flange Diameter	Flange Thickness	Window Aperture	≈ Length
TF70	70	12.7	33	4
TF70W	70	18.5	33	9
TF114	114	17.5	60	6

* Length may vary for various window materials.
* Specifications and equipment would be changed without any notice or obligation on the part of manufacturer.

Features

Metal Sealed: from small size to super large size.
Thermal Strain Free: Since there is no thermal treatment during the assembly process, the window material itself is kept in thermal strain free condition so it is perfect and exactly suitable for high precise measuring from outside.
Breakage Prevention Mechanism: Window Material is elastic and durable against the cracks and leaks even the flange bolts are unbalanced tightened.
Structure of Resisting Pressure: Even the pressure of the inside of chamber is higher than that of outside of chamber (atmospheric side), window material will never yield cracks nor leak out.
Non-magnetic and Non-radiation metal: It can be used in high radiation condition and never affects magnetic field. (Standard Flange : SU304, Custom Made : SUS316 etc., avaiable)
Shock Proofl: XYZ direction > 30G/3000 cycle
Helium Leakage: < 1X10^-10 Pam³/sec
Bake Temperature: < 200˚C Recommendable (max), depends on window sizes and materials.
Coating: Various coating is available,. Window is assembled without thermal treatment process after coated, so it can be kept in high precision condition.
Counter Flange: CF standard flange (other standards of flange are available)
Custom-made available: Super big caliber, for high inside pressure or outside pressure, high precision polished, convex or concave lens, special flange and etc,.
Inspection Certificate: Leak dose of Helium by the actual article at the room temperature. (Certificate is issued for each item.)

* Please contact us to discuss specifications.

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