Ideal Vacuum Cube, 6x6, Liquid Nitrogen LN2 High Vacuum Pumping Trap And Cryogenic Test Fixture

These liquid nitrogen (LN2) cooled trap accessory can serve both as a high-vacuum pumping trap for chemical and water vapor or as a cryogenic test fixture. They are designed to consume minimal volume inside our 6x6x6 Ideal Vacuum Cube while expanding its capabilities to be used as a Thermal Vacuum Chamber (TVC). Thermal Vacuum Chambers are often used to replicate or simulate the extreme conditions of outer space and are frequently used for testing spacecraft and aerospace parts or components under a simulated space environment. With the addition of the appropriate electrical power feedthroughs a test part can be resistively heated and suddenly cooled while under a controlled vacuum environment (producing Thermal Shock Vacuum Testing) inside our Ideal Vacuum Cubes.

Liquid Nitrogen Traps (LNT) are capture type traps that collect condensable gas vapors such as water and solvents that outgas from components inside the vacuum. These traps collect vapors by utilizing a cryogenic refrigerant such as liquid nitrogen and should be the foremost choice in high moisture applications. Without appropriate trapping, condensable vapors can intrude into the mechanical pump, limiting the ultimate base pressure of the pump to unacceptably high levels. Our LN2 traps actually act as a very efficient high vacuum pump producing lower base pressures and faster pump down as the water vapor is pumped quickly from the vacuum chamber.

Since these LN2 trap and cryogenic test fixtures use liquid nitrogen, they must be mounted with the LN2 fill port in an upright vertical position. Once under vacuum, liquid nitrogen can be poured into the traps top fill port allowing the temperature of the trap and its horizontally oriented test fixture to plummet down to cryogenic temperatures of -196 degrees Celsius (-321 degrees Fahrenheit). These LN2 high vacuum pumping traps expand the capabilities of our Ideal Vacuum Cubes so that they can be used as a Thermal Vacuum Test Chamber or a Thermal Shock Vacuum Test Chamber.

These liquid nitrogen (LN2) cooled trap and cryogenic test fixtures hold 0.14 liters of liquid nitrogen producing a low cryogenic temperature of -196 degrees Celsius (-321 degrees Fahrenheit), have a vacuum side surface area of approximately 45 in.² . The bottom plate of these traps includes a threaded optics table breadboard pattern, tapped 1/4-20 drilled on 1 inch center, for mounting opto-mechanical vacuum compatible optical posts, mirror mounts, lenses, polarizes, and other optical and test hardware components. These traps are made of 304 corrosive resistant stainless steel, use Viton o-rings, with outer plating being made of 6061-T6 aluminum alloy having powder coated blue outside finish.

Ideal Vacuum Cube Introduction

Our Ideal Vacuum Cube is a modular high-vacuum chamber system, conceived to enable creativity and design flexibility in vacuum chamber system construction. Cubes can be stacked together into various shapes and configurations, with interchangeable plates offering a variety of features for connections, windows, and feedthroughs. Plates include 1/4"-20 mounting threads on a standard 1" optical pattern for easy connection of hinges, posts, mounts, lenses, polarizers, and other accessories.

Durability and Versatility

The large inner dimensions and open design of Ideal Vacuum Cubes makes them perfect for many vacuum chamber applications and experiments. Vacuum Cubes are constructed of lightweight 6061-T6 aluminum alloy, allowing them to be easily transported around the lab and mounted on optical tables (unlike heavy stainless steel vacuum chambers). A patented seal protective design, stainless steel thread inserts, and powder-coated outside plate finish help make the Vacuum Cube a durable tool for even the most demanding use.

Technical Details

Patented Chamber System

Our Ideal Vacuum Cubes have a patented design which features our Taper-Seal technology. Unlike other vacuum flange designs, such as, Conflat CF, KF/NW, or ISO-LF (large flange), which can be easily damaged when set on work surfaces, our Taper-Seal design protects critical sealing edges and o-rings from contact which can cause damage or contamination.

Innovative Chamber Building Blocks

Ideal Vacuum Cubes can easily be stacked together to build a complex, yet lightweight vacuum system (see graphic below). The outer edges of each vacuum cube feature hardware mounting sockets for easy cube-to-cube connections. A cube coupling kit includes the hardware needed to connect two cubes together. This allows scientists to creatively construct long or odd-shaped vacuum systems in a laboratory.

Configurable Plates and Accessories

The Vacuum Cube can be configured with a wide variety of plates and windows with many options. A Vacuum Cube can be fitted feedthroughs for electrical power, thermocouple temperature measurements, optical lasers light or imaging detectors, gas supply, or fluid flow for heat/cooling recirculation lines. Compatible standard flange styles include KF-16, KF-25, KF-40, KF-50, ISO-63, along with conlfat CF 2.75, CF 3.375, and CF 4.5 inch flanged ports. Viewing windows are also available, and custom plates can be manufactured on request. An optional hinge kit can be ordered to convert any plate into an operable door.

Applications for Ideal Vacuum Cubes

Our Ideal Vacuum Cubes are designed to implement well into optics laboratories for quick installation in laser research applications. The graphic below depicts an example laser spectroscopy laboratory setup, cavity ring down spectroscopy (CRDS) vacuum chamber system, using a 6x6x18 inch Ideal Vacuum Cube chamber. The modular design of our Ideal Vacuum Cubes make them suitable for many vacuum chamber applications:

• Vacuum Ultraviolet (VUV) Devices and Experiments
• Thermal Vacuum Testing
• Altitude Testing
• Vacuum Degassing Chamber
• High Power and Ultra Short Pulsed Lasers Research and Development
• Ion Acceleration
• RGA (Residual Gas Analyzers)
• Helium Leak Testing of Hermetic Sealed Devices With Welded In Helium Atmosphere
• Leak Detection Of Pharma Packaging
• Spectroscopy
• Molecular Ion Trap
• Cryostat Vacuum Chamber
• Beamlines

Vacuum Cube Pumping Performance

The pump down curves for several Ideal Vacuum Cube configurations are shown in the graphs below. A single 6x6x6 inch Cube can be pumped from atmosphere to 1x10^-5 Torr in 2.5 minutes and below 1x10^-6 Torr in around 15 minutes. (view curves graphic 1)
This was accomplished using a 68 liters/second turbomolecular pump backed by a 110 liters/minute (3.3 cfm) dry scroll vacuum pump.

We have also provided roughing pump down curves for popular Agilent Varian IDP-3 and SH-110 dry scroll pumps. The 6x6x6 Cube reaches base pressure of 300 mTorr for the IDP-3 (2.1 cfm) in less than 1 minute of pumping, and 50 mTorr for Agilent Varian SH-110 (3.3 cfm) in around 2 minutes. (view curves graphic 2)

On special request we can offer fully anodized plates to help with absorption of scattered light in laser research and optical applications. Anodized components do not pump down as fast as bare aluminum metal surfaces. (view curves graphic 3) A single 6x6x6 with anodized plates required 1 hour of pumping to reach 1x10^-5 Torr.