- 3 DoF vibration attenuation inside the cryostat
- Vibration attenuation just below the experiment
- High insensitivity to cables and thermal braids
- High payload to carry the complete experiment
- Optimal performance with JPE stages
- High Q factor (no forced damping)
- All phosphor bronze construction, nonmagnetic
- Central open aperture
- Up to 6kg load capacity
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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.
| specs | unit | CVIP1 | CVIP2 | CVIP3 |
|---|---|---|---|---|
| Isolated axes | - | z, Rx, Ry | ||
| Main dimensions | mm | ø 50 x 21.8 | ø90 x 25.8 | ø120 x 26.3 |
| Central open aperture | mm | ø16 | ø22 | ø45 |
| Weight | kg | 0.15 | 0.7 | 1.3 |
| Max payload | kg | 0.5 | 1.5 | 6 |
| Moving mass excluding payload | kg | 0.07 | 0.41 | 0.69 |
| Linear stiffnes z-axis* | N/m | 3.90E+04 | 7.80E+04 | 4.70E+05 |
| Rotation stiffness x-axis* | Nm/rad | 7.8 | 47.5 | 613 |
| Rotation stiffness y-axis* | Nm/rad | 7.8 | 47.5 | 613 |
| Rotation axis position below platform | mm | -14.7 | -18.2 | -17.6 |
| z, Rx, Ry cut-off frequencies @ max payload** | Hz | 42, 12, 12 | 32, 17, 17 | 42, 30, 30 |
| Bi-directional | - | can be used upside down (hanging) | ||
| Overload protection endstops | mm | +/-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.