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Fast Pump Down Dock with LN2 UHV Booster CF40

Product code: VSCTH40(WT)

The VSCTH40(WT) transfer chamber enables the exceptionally fast transfer of a sample from a portable UHV-Suitcase into the UHV-System. Vacuum in the transfer chamber is created using a turbo pump as well as a cryogenic pump. Thus a sufficient vacuum is established within approximately 30 minutes, as opposed to 24 hours when baking out the buffer volume conventionally. The turbo pump is not part of the product.

Using the VSCTH40(WT) for fast transfer, bakeout is not required. This has the additional benefit of the UHV-Suitcase not heating up along with the transfer chamber, which would negatively influence the vacuum inside the suitcase.

Developed in collaboration with the Nanoscale Science Department of the Max-Planck-Institute for Solid State Research, Stuttgart.

Specifications: Fast Pump Down Dock with LN2 UHV Booster CF40

  • fully UHV compatible materials
  • turbo pump not included
  • incl. gatevalve DN40CF

download drawing (pdf)
download 3D-model (stp)
download manual (pdf)

1x Docking Station for UHV Suitcase, includes Chamber, Gatevalve and CF-Hardware

Product code: VSDOCK40

  • Compact docking chamber for UHV suitcase (UHV(C)TM)
  • Material: stainless steel 304L (1.4301)
  • He leak rate: <1x10-9 mbar*l/s

In combination with CTDH40 or CTH40 LN2 cold trap, this docking station allows for fast pumpdown to a vacuum level in the 1E-9 mbar range.
Please note: LN2 cold trap must be ordered separately

Downloads: drawing (pdf)

1x UHV Booster CF40 flow through version with heating coil and temperature sensor

Product code: CTH40(WT)

  • heat exchanger: Aluminium cooling blocks with OFHC core
  • pumpdown time (with VSCT40): approx. 30 minutes to a pressure of around 1E-8 mbar
  • cooling temperature cryo trap: 80K
  • built-in resistive heater for quick warm up
  • Pt100 temperature sensor
  • 6-pin miniature feedthrough
  • mounting flange: DN40CF (2.75")
  • feedthrough flange: DN16CF (1.33")
  • fully UHV compatible materials

Note: Cable with connector for cold trap heater must be ordered separately: CABCTH40HT3M

Possibly an end-user certificate (EUC) is required from purchaser.
Export licence from the State Secretariat for Economic Affairs (SECO) or Swiss Federal Office of Energy (SFOE) may be required


The VSCTH40(WT) Fast Pump Down Dock with LN2 UHV Booster CF40 suits the following products:

List price:

54'950.00 CHF

55'596.03 EUR*
60'760.53 USD*

NexGeneration UHV Suitcase for Room-Temperature Transfer - Long Throw

Product code: VSN40S(VRV)L

This common configuration of the NexGeneration UHV features a WM40 single-shaft wobblestick and a GRABSHOM grabber tool for SHOM sample plates for sample transfer.
The additional MD40(Y0) single shaft linear/rotary feedthrough holds a stack of three single and two double-height sample receivers and the rear-view welded window offers an essential additional view of the transfer point, exactly where you need it.

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