CVIP – Cryo Vibration Isolation Platform

Sandwiched between the cold plate and experiment it dampens high frequency pulse tube vibrations
CVIP2
CVIP2 with I1-CVIP2
CVIP2 with I1-CVIP2
CVIP3
I1-CVIP2
CVIP1 with I1-CVIP1
CVIP1
CVIP2
CVIP2 with I1-CVIP2
CVIP2 with I1-CVIP2
CVIP3
I1-CVIP2
CVIP1 with I1-CVIP1
CVIP1
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CVIP2
CVIP2 with I1-CVIP2
CVIP2 with I1-CVIP2
CVIP3
I1-CVIP2
CVIP1 with I1-CVIP1
CVIP1
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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.

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specsunitCVIP1CVIP2CVIP3
Isolated axes-z, Rx, Ry
Main dimensionsmmø 50 x 21.8ø90 x 25.8ø120 x 26.3
Central open aperturemmø16ø22ø45
Weightkg0.150.71.3
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-directional-can be used upside down (hanging)
Overload protection endstopsmm+/-0.5
Main construction material-Phosphor bronze
* ±20%
** ±10%. Payload center of gravity on center axis, 35mm above platform

HV rated positioners can realistically be considered compatible with pressures as low as 1E-8 mbar. Lower pressures can be achieved by prolonged baking of positioners in vacuum at 100-150 deg C, depending on the type of positioner. Upon request JPE can provide such service at additional costs.

CVIP1 /HV: Cryogenic Vibration Isolation Platform 1
CVIP2 /HV: Cryogenic Vibration Isolation Platform 2
CVIP3 /HV: Cryogenic Vibration Isolation Platform 3

Passive instrument, no controller required.

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