liquid helium based superconducting magnet systems

he bath cryostat

temperature range: 4 . . 70 K

attoDAMP anti-noise & -vibrations cabinet

enables sensitive measurements like LT-SPM

optical free-beam access through top window

enables confocal magneto-optics measurements

attocube‘s attoLIQUID1000 liquid helium cryostat is based on highly efficient liquid Helium bath cryostats with 50 l cryogenic liquid reservoir. As with the whole attoLIQUID family, the attoLIQUID1000 has been optimized for highest stability, enabling experiments such as ultra high resolution imaging and/or spectroscopy using scanning tunneling microscopy (STM) or long-term optical investigations of single quantum dots over several weeks. All of attocube‘s available scanning probe microscopy inserts are compatible with the attoLIQUID1000 and are cooled by a controlled exchange gas atmosphere in thermal equilibrium with the surrounding liquid Helium.

The attoLIQUID1000 provides a base temperature of 4.2 K which can be further reduced down to 2 K by pumping on the Helium reservoir (optional). Superconducting solenoids (up to 15 T), split coils and vector magnets are available as upgrade options. The magnet can be used in driven or in persistent mode.
The system includes all necessary components needed for the operation such as the renowned attoDAMP anti-vibration cabinet with acoustic damping, dual channel temperature controller, liquid helium level meter and probe, transfer line and all necessary vacuum fittings.

Cryogenic Tablet


Options and Upgrades
temperature controllerincluded
pumping kitturbomolecular pump with suitable backing pump for sample space preparation
helium transfer lineincluded
helium lever meterincluded
superconducting magnetsolenoids: 7, 9, 12 T, vector magnets: e.g.: 8/2 T, 9/3 T, 9/1/1 T, ...
bipolar magnet power supplyincluded (with optional magnet)
confocal microscopesattoCFM I, attoCFM II, attoCFM III, attoCFM IV
confocal Raman microscopesattoRAMAN
atomic force microscopesattoAFM I , AFM upgrade options (MFM, KPFM, PFM, conductive-tip AFM), attoAFM III, attoAFM/STM
scanning Hall probe microscopesattoSHPM
combined atomic and confocal microscopeattoAFM/CFM
General Specifications
technologyliquid helium bath cryostat vacuum isolation, vapor shielded (LN2 shielded on request)
liquid helium dewar50 l capacity, vacuum isolation, vapor shielded (LN2 shielded on request)
sample environmentHe exchange gas
sample space2" diameter probe bore fitting all attocube inserts
sample exchangetop loading system for quick access
vibration & acoustic noise damping systemdewar isolated and suspended in attoDAMP cabinet
Performance Data
temperature range4 .. 70 K(< 2K with optional pumping kit)
estimated liquid helium static loss rate0.25 l/hr (standard edition, without insert)
cool down time of sampleapprox. 30 min. (depending on insert and acceptable helium consumption)
cool down time of system (system incl. 9 T magnet)approx. 6 .. 24 h
cool down time of system (system without magnet)approx. 6 .. 24 h
temperature stability< ±0.1 %
Size and Dimensions
cryostat (width x depth x height)900 x 750 x 1500 mm³ (including attoDAMP; depending on magnet choice)
required min. ceiling heightapprox. 3.20 m (depending on magnet)
optional electronics rack (width x  depth x height)640 x 640 x 1350 mm³
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Customer Feedback

Prof. Dr. P. Maletinsky

Quantum-sensing Lab, Department of Physics, University of Basel, Switzerland

Our attoLIQUID1000-based attoAFM/CFM system was a complete game-changer for starting up my research group. Instead of spending years developing a highly complex technical system on our own, we had a fully operational, high-performance cryogenic AFM/CFM system at hand within a relatively short timespan. This allowed us to plunge into our scientific endeavours with highest efficiency. As always, this attocube product stands out due to it’s reliability, ease of use and excellent performance. A particular further asset is the systems versatility - interfacing it with our existing experiments was straight-forward due to the clever system design and excellent support from attocube’s application engineers.