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Additional Vibration Isolation

Cryogenic Measurement System Option

We offer improved vibration isolation for experiments that are particularly sensitive to low frequency vibrations (< 1 kHz).

Overview
Passive Vibration Damping Frame
Active Vibration Damping Frame
GHS Isolation Frame
Technical Specifications
Contact Sales

The main source of mechanical vibration in a Dilution Refrigerator Measurement System is the Pulse Tube Cryocooler. If the experimental load is critically sensitive to the vibration level in the cryostat, we offer an upgrade to the system support frame by introducing extra isolation from the Pulse Tube Cryocooler and the floor.

Passive Vibration Damping Frame

1.0

Additional Vibration Isolation

Cryogenic Measurement System Option

The Passive Vibration Damping Frame (PVD) consists of a heavy-duty frame and weight (~200 kg machined aluminum plate) added to the top flange. The Pulse Tube Cryocooler motor is placed on a shelf attached to the main frame. The added mass helps absorb vibrations that couple through the floor (connecting the frames) and thermal links (copper braids) between the cold head and cryostat flanges (4K and 50K Flanges).

Active Vibration Damping Frame

2.0

Additional Vibration Isolation

Cryogenic Measurement System Option

The PVD Frame can be upgraded to the Active Vibration Damping Frame (AVD) which includes an active damping system. When active damping is enabled, there is an active motor correcting the relative movement between the frame and the top plate of the cryostat. This damping also corrects for tilt and rotation between 1 Hz and 120 Hz.

Note that since the AVD Frame is an upgraded version of the PVD Frame, the latter is a prerequisite for AVD Frame installation.

GHS Isolation Frame

3.0

Additional Vibration Isolation

Cryogenic Measurement System Option

Another vibration reduction upgrade is to include an additional frame with pump lines molded into a concrete block, with still-pumping lines further decoupled through 2 metallic T-damper pipes.

This reduces vibrations that couple through the cryostat from the Gas Handling System (GHS) and the various pump lines.

Technical Specifications

4.0

Additional Vibration Isolation

Cryogenic Measurement System Option

SystemSDLHLDXLDsl
Passive Vibration Damping FrameAvailableAvailableAvailable
Active Vibration Damping Frame upgradeAvailableAvailable

See Also

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