The SSAC-12 is a versatile, general purpose surface science analysis
chamber. It has proven to be suitable for a wide range of studies
and experiment. Standardization of the chamber design has enabled
MDC to offer the SSAC-12 at this price.
The chamber has a total of 18 access ports. In addition to the pump
port in the base, there are three 8", two 6", three 4-1/2" and nine
2-3/4" ports with Del-Seal
™ CF metal seal flanges. The SSAC-12 has
a 14-5/8" female wire seal flange on the pump port; the SSAC-12D
is supplied with a 14" Del-Seal
™ CF flange.
The chamber access ports accommodate a variety of experimental
devices, analytical instruments, viewports, feedthroughs and other
accessories. Note that the 2-3/4" flanges connect to the chamber
with oversize 1.75" O.D. tubing to accommodate larger devices.
Access ports are precision aligned with a helium-neon laser during
construction. Each is oriented toward one of three internal reference
points A, B and C, or a vertical centerline. Angles and distances to
these points are listed in the table.
Chamber construction is of type 304 stainless steel. All flange and
tube connections are TIG fusion welds. All internal surfaces are electropolished
to ultrahigh vacuum standards. Connection hardware,
including copper gaskets and bolt sets, are found under the individual
size flange in Flanges and Fittings section.
Ports with colored flanges are unique to a single focal point. Ports to
focal point A are shown in magenta; ports to focal point B are shown
in purple; and ports to focal point C are shown in cyan. Ports which
have more than one focal point or no listed focal point are shown
without color. Focal length dimensions for ports with more than one
focal point are given to the first focal point intersection.