List price:

5'975.00 CHF

6'148.95 EUR *
6'670.39 USD *

Terms of sale and delivery:

Prices listed are EXW Zurich (Incoterms® 2020).
Prices are subject to change without notice.

Minimum order value: 600.00 CHF
(excl. taxes/packaging/shipping costs).

Pricing is in CHF.

Prices marked with an asterisk (*) in EUR & USD are for reference only.

Exchange rates:
1 EUR = 0.97171 CHF
1 CHF = 1.0291 EUR
1 USD = 0.89575 CHF
1 CHF = 1.1164 USD

LN2 cold trap for fast pump down dock. A double walled, vacuum isolated dewar filled with liquid nitrogen is used to cool a heat exchanger with a large surface area.

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UHV Booster CF40 dewar version with heating coil and temperature sensor

Product code: CTDH40

The CTDH40 is an LN2 cold trap, used as a cryopump. This so called "UHV booster" for small transfer chambers (e.g. our fast pump down dock VSCT40), "boosts" pumpdown. Used in combination with a turbomolecular pump, it reduces base pressure about a factor of 10 in a given time and thus enables exceptionally fast sample transfer from a portable UHV suitcase into the UHV system.
After filling the dewar with liquid nitrogen, the heat exchanger on the vacuum side of the CTDH40 is cooled down within a couple of minutes and thus a sufficient vacuum level for transferring clean samples is established within approx. 30 minutes.

By using the CTDH40 to establish UHV, 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 UHV suitcase.

For quick warm-up, the cold trap can be heated via a built in resistive heater. A filling of 0.5lt will keep the dewar cold for approximately 3h. Delivery includes a plastic lid for the vacuum isolated dewar.

Temperature during cooldown and warmup is monitored using an integrated PT100 sensor. A cable with a suitable connector for the cold trap heater must be ordered separately: CABCTH40HT4M

Specifications: UHV Booster CF40 dewar version with heating coil and temperature sensor

LN2 filling volume: ~0.5lt
dewar vacuum isolated
plastic lid included
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")
incl. thermal insulating sleeve and cover
fully UHV compatible materials

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

Downloads: drawing (pdf) / 3D-model (stp) / manual (pdf) / pin layout (png)

Options and Accessories

List price:

140.00 CHF

144.08 EUR*
156.29 USD*

Foam cap for CTD50

Product code: CTD50CAPFOAM

Foam cap for CTD50