Bimetal Al/SS Neutron Windows

Atlas Neutron Windows incorporate our bimetal CF flange and an aluminum window in a single flange body with no welding or connections. The windows enable neutron applications such as UHV systems used in cyclotrons, nuclear reactors and radioisotope production for medical imaging. The residual, neutron-induced radiation in aluminum has a half-life that is orders of magnitude shorter than that of stainless steel. 

Standard windows are machined to a desired thickness from 6061 T6 aluminum. Dual neutron windows offer an internal cavity that can be differentially pumped or filled with a gas and analyzed through an array of optical ports mounted around the rim of the flange. All flanges are vacuum tested to a leak rate of 1×10-9 cc/sec of He prior to shipping.

Applications

• Aluminum vacuum systems
• Cyclotrons
• Nuclear reactors
• Medical imaging 

Features & Specifications 

• UHV rated to 1x10 -13 Torr
• Long–life 90° included angle knife edge design developed at CERN
• Compatible with industry standard Conflat interface
• Standard flange sizes: 1.33”-16.5” (DN16-DN500)

Materials

• Body / Weld Interface: Aluminum 6061 T-6
• Knife-edge: stainless steel 316L
• Contact sales for custom titanium, reduced stainless steel, and window thicknesses

Environmental

Vacuum Leak Tested < 1x10-9 cc/sec of He

Thermal

Peak Temperature (< 2 Min. during weld-up) 300°C

Operational Temperature -200°C to 250°C

Mechanical—Bonded Interface

• Tensile: 15,00psi (103MPa)
• Shear: 10,000psi (69MPa)