CVIP – Cryo Vibration Isolation Platform

Sandwiched between the cold plate and experiment it dampens high frequency pulse tube vibrations

Product description

The Cryo Vibration Isolation Platform (CVIP) is a passive vibration isolation platform with z, Rx and Ry attenuation of floor vibrations (read our application note on Z-Transmissibility Measurements). It is placed directly on the cryostat cold plate and carries the experiment. It is a relatively stiff spring design, which results in atypical high cut-off frequencies and high payload. Although this will limit the damping of low frequencies, compared to conventional dampers with low cut-off frequencies, it is much more insensitive to added cables and thermal braids between cold plate and experiment. These can become the limiting factor for stability in conventional dampers.

Isolated axesz, Rx, Ry
Main dimensionsmmø 50 x 21.8ø90 x 25.8ø120 x 26.3
Central open aperturemmø16ø22ø45
Max payloadkg0.51.56
Moving mass excluding payloadkg0.070.410.69
Linear stiffnes z-axis*N/m3.90E+047.80E+044.70E+05
Rotation stiffness x-axis*Nm/rad7.847.5613
Rotation stiffness y-axis*Nm/rad7.847.5613
Rotation axis position below platformmm-14.7-18.2-17.6
z, Rx, Ry cut-off frequencies @ max payload**Hz42, 12, 1232, 17, 1742, 30, 30
Bi-directionalcan be used upside down (hanging)
Overload protection endstopsmm+/-0.5
Main construction materialPhosphor bronze
* ±20%
** ±10%. Payload center of gravity on center axis, 35mm above platform

CVIP1: 50mm platform vibration isolator
CVIP2: 90mm platform vibration isolator
CVIP3: 120mm platform vibration isolator

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