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attocube - Model attoLIQUID1000 -Liquid Helium Cryostats
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.
- General Specifications
- technology : liquid helium bath cryostat vacuum isolation, vapor shielded (LN2 shielded on request)
- liquid helium dewar : 50 l capacity, vacuum isolation, vapor shielded (LN2 shielded on request)
- sample environment : He exchange gas
- sample space : 2" diameter probe bore fitting all attocube inserts
- sample exchange : top loading system for quick access
- vibration & acoustic noise damping system : dewar isolated and suspended in attoDAMP cabinet
- Performance Data
- temperature range : 4 .. 70 K(< 2K with optional pumping kit)
- estimated liquid helium static loss rate : 0.25 l/hr (standard edition, without insert)
- cool down time of sample : approx. 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 height : approx. 3.20 m (depending on magnet)
- optional electronics rack (width x depth x height) : 640 x 640 x 1350 mm³
- Options and Upgrades
- superconducting magnet : solenoids: 7, 9, 12 T, vector magnets: e.g.: 8/2 T, 9/3 T, 9/1/1 T, ...
- bipolar magnet power supply : included (with optional magnet)
- temperature controller : included
- pumping kit : turbomolecular pump with suitable backing pump for sample space preparation
- helium transfer line : included
- helium lever meter : included
- Compatibility
- confocal microscopes : attoCFM I, attoCFM II, attoCFM III, attoCFM IV
- confocal Raman microscopes : attoRAMAN
- atomic force microscopes : attoAFM I , AFM upgrade options (MFM, KPFM, PFM, conductive-tip AFM), attoAFM III, attoAFM/STM
- scanning Hall probe microscopes : attoSHPM
- combined atomic and confocal microscope : attoAFM/CFM