Brush Wellman - Electrofusion Products has been the leading supplier of beryllium beam pipes for linear accelerators and colliders in research centers since 1973. We specialize in the design, fabrication, and testing of high performance assemblies which require vacuum tightness and high temperature bakeouts.

 

 

BW-Electrofusion can offer you the following features and benefits:

 

· High X-Ray and Electron Transmissivity

· Uniquely Fabricated for Easy Disassembly & Re-Assembly

· Extremely Stable Longitudinal & Transverse Properties

· Certified Vacuum Leak Tight to a rate of 1 x 10^-9 atm-cc/sec of helium

· Prototypes Verify Workability

· Welded Assemblies Bakeable up to 300°C

· Brazed Assemblies Bakeable to 450ºC

· Actively Cooled Assemblies

· CAD Designs Assure Producibility & Cost Effectiveness

· Custom Testing Available

 

 

Beryllium beam pipes have been fabricated in lengths from 1 inch to over 24 feet (25mm to over 7.3m), in diameters from 0.5 inch up to 24 inches (12.5mm up to 600mm), with wall thicknesses ranging from 0.010" to over 0.100" (0.25mm to over 2.5mm).

 

 

Beryllium sheet is hot-formed and seamed with a longitudinal splice to maintain vacuum integrity. Pipes have been tested to 1.5 times atmospheric differential pressure in a 200°C vacuum bakeout for four hours, and have been further tested in compression or tensile loading, depending on requirements. Beam pipes have also been designed to withstand up to nine atmospheres of differential pressure for very specialized applications.

 

In addition to fabricating beam pipes from high strength beryllium sheet, it is also possible to produce seamless pipes created by machining from beryllium block. Aluminum, titanium, and stainless steel are all possible extension materials which have been either epoxy bonded, welded, or brazed to the central beryllium pipe. Pipe interiors have been lined with gold, nickel, silver, or copper to increase electrical conductivity.