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Chambers

Product catalog summary

Introduction
This document details the specifications and descriptions of components used in vacuum systems, focusing on chambers, collars, baseplates, and base wells. Dimensions are in inches unless stated otherwise.

Stainless Steel Bell Jars
MDC stainless steel bell jars are designed for use with baseplates, base wells, and feedthrough collars. They include a dovetail groove for a Viton® elastomer gasket to ensure a vacuum seal, a Pyrex® viewport, and are suitable for ultra-high vacuum (UHV) environments. An optional electropolished finish is available.

Feedthrough Collars
These collars enhance bell jar functionality by providing additional access ports. They come with Del-Seal™ CF metal seal flanges or ISO KF NW40 Kwik-Flange™ flanges and require an MDC baseplate for installation. Sealing is achieved with an L-gasket or circular elastomer.

Baseplates
Baseplates offer a stable platform for bell jar systems, essential for installing bell jars and feedthrough collars. They are compatible with various pump and gate valve interfaces, including ANSI ASA, Del-Seal™ CF, and Large-Flange™ ISO LF flanges.

Base Wells
Base wells combine a baseplate and a feedthrough collar, reducing the number of vacuum seals needed. They provide multiple access ports and are compatible with standard MDC vacuum components, with various flange options for system connection.

Surface Science Analysis Chambers
MDC's surface science analysis chambers are made from type 304 stainless steel, featuring multiple access ports for experimental and analytical devices. They adhere to UHV welding standards and are leak-tested for reliability.

Surface Treatment and Finishing
The document describes surface treatment processes, including glass bead blasting and electropolishing, which achieves a smooth, strain-free surface by selectively dissolving high points on the metal surface.

Surface Science Chamber Features
The UHV surface analysis chamber features 18 access ports, laser-aligned ports, and Del-Seal™ CF port flanges. It is constructed from type 304 stainless steel and is compatible with ultrahigh vacuum conditions up to 1 x 10^-11 Torr.

Leak Testing
All vacuum components undergo rigorous leak testing using mass spectrometer leak detectors with helium sensitivity of 2x10^-10 standard cc/sec to ensure high quality and performance.

Chamber Design and Specifications
The SSAC-12 chamber is designed for versatility in surface science analysis, with a standardized design for cost efficiency. It includes various port sizes and configurations for different experimental setups, is bakeable to 450°C, and features TIG fusion welds and electropolished internal surfaces.

Port Configuration and Alignment
Ports are precisely aligned using a helium-neon laser and oriented towards specific focal points within the chamber. Detailed specifications on port angles and focal point dimensions are provided.

Catalog excerpts

Introduction Bell Jars Stainless Steel Bell Jars474 > 472 Collars,Baseplates &Base Wells Feedthrough Collars476 Baseplates478 Base Wells478 Surface Science Analysis 482 > 471 size="-1">

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Base Wells Base wells are the product of integratingboth a baseplate and a feedthrough collar. They provide the functionality of both components and replace one vacuum seal with a weld joint.They are available with radially oriented access ports in four,eight, or eighteen port configurations and are fitted with either 2-3/4 inch Del-Seal Stainless Steel Bell Jars MDC stainless steel bell jars are designed foruse with MDC baseplates,base wells and feedthrough collars.A dovetail groove in the jars base flange holds a Viton MDCfeedthrough collars are used to expandthe capabilities of conventional...

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Stainless steel bell jars arefound on page 474 O-rings are on page 475Multi-port feedthrough collarsbegin on page 476L-gaskets are on page 477Baseplates and Base Wells arefound on page 478 Cryogenic Sorption roughingpumps are in Section 3.2, page 259 High vacuum pumps are customer supplied Gate valves are in Section 2.1,page 163 Stainless steel bell jarpage 474 Multi-port feedthrough collarpage 476 > Chambers Baseplatepage 478 Typical configuration shown without connecting hardware for clarity Base wellpage 478 >

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Nominal diameter Stainless Steel Bell Jar Viewport .970 Chambers Lift ring .188 Material > Height Bell Jar304ss Gasket,elastomerViton > Viewport height Seal Gasket,elastomerO-ring MethodGravity Vacuum Range 1x10 > -6 Torr > Temperature Range Ambient to 150ΰC > Flange O.D. Weight &Dimensions See table > Phone 800-443-8817 www.mdcvacuum.com MDC Vacuum Products Corporation >

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Atyp Feedthrough Collar,O-ring sealed Btyp 3.00 6.00 1.62typ All port flanges fixed Groove I.D. Feedthrough collar,L-gasket sealed > All port flanges fixed Flange O.D. > ή Drawings show collars with four Del-Seal > ՙ CF ports.All collar walls are nominally 3/16" thick. >

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Base flangeReference plane Ports are aimed at various focal points within the chamber (0,0,0)Focal points > Chambers In general,the central reference point is an arbitrary point on a reference plane.ՕA base flange,reference plane and the zero point are selected for symmetry and simplicity The central reference point,or zero point,is given XYZ coordinates of (0,0,0)ՕAll focal point dimensions are measured from the zero point Port lengths and angles are measured from focal points 90 հ Horizontal centerline 90 Horizontal centerlinePort centerline Straddle vertical centerline 25 а Vertical centerlinePort...

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Chambers

Chambers

Catalog excerpts

All MDC vacuum products catalogs and technical brochures