Modular sources are offered in six standard frame sizes and are stand alone components for
maximum installation flexibility in existing vacuum systems. For those desiring standard off-the-shelf
solutions, complete horizontal and vertical flange mounted systems are also
available. For a detailed presentation of horizontal and vertical turnkey
coating systems please click on product links on this page
Modular sources are fitted with direct watercooled crucibles. Select
models have indirectly cooled crucibles that allow the user to change crucibles
without interrupting the flow of water to the source and without having to disassemble the source.
Modular sources are offered with material capacities from 6cc to 400cc in a multitude of
pocket geometries and arrangements. They are available in both fixed and rotary pocket
mechanisms for high and ultrahigh vacuum environments. e-Vap® modular sources are
designed for optimum performance with e-Vap® power supplies, controls and electronics.
Other essential components and hardware required for the installation of
e-Vap® modular sources are detailed in e-Vap®
Contact the MDC technical sales engineers for custom electronbeam evaporation requirements.
Source Type... The modular sources listed below are categorized by
Source Type. Specifications for each source are detailed by Frame Size on the
individual frame pages. The diagram below gives a bird’s-eye view of the various crucible pocket
geometries offered in this section.
Direct vs Indirect Water Cooling... Direct cooling provides
water circulation through a crucible’s elaborate hollow core, thus directly
cooling the copper crucible. Indirect water cooling employs a solid Crucible / Pocket Geometry
copper crucible in intimate contact with the source’s watercooled copper base. Indirectly
cooled sources allow crucible replacement without having to disconnect water lines, but must be
operated at lower power levels.
Crucible Liners... MDC recommends using crucible liners with all e-Vap evaporation sources.
These liners offer improved thermal stability while reducing the transfer of heat to the crucible. Liners
provide the ability to easily and quickly switch evaporant materials without
removing the crucible for cleaning. They also reduce power requirements
to achieve specific evaporation rates. For a detailed list of crucible liner
materials click here.