automated top-loading cryostat with variable temperature & superconducting magnet
cryogen-free & low vibration cryostat platform
no liquid helium required & enables SPM
automated temperature and magnetic field control
fast parameter change via touchscreen
variable temperature (1.65 .. 300 K) @ full field
transport measurements & LT-SPM
At the top of our range of top-loading, closed-cycle cryostat, the attoDRY2100 offers a continuous base temperature of 1.65 K, an automated temperature & magnetic field control from 1.65 K to 300 K and your choice of superconducting magnet. It even allows for full magnetic field even at 300 K with exceptional temperature stability, as well as for field cooling of samples without the need to handle liquid helium. It is hence the best choice as your variable temperature cryostat for any low temperature experiment, be it magnetotransport measurements, confocal microscopy & spectroscopy or scanning probe microscopy.
The integrated touchscreen allows for conveniently setting the desired field (B) and temperature (T) without even using a PC. More elaborate measurement schemes such as programmable sweeps of B and T are easily possible via a USB connection and a LabVIEW interface. The temperature stability was measured to be better than ±5 mK at 1.5 K over 10 hours. The top-loading design enables quick and easy sample exchange, while offering a generous sample space of 49.7 mm in diameter.
The unmatched cooling performance via exchange gas coupling provides an initial cooldown time of the complete system of around 15-20 hours, while the turn-around time during sample exchange is around 5-8 hours.
Last but not least, the attoDRY2100 was specifically designed to provide an ultra-low vibration measurement platform for cryogenic scanning probe experiments without the need
for liquid helium. Due to a proprietary design, mechanical vibrations created by the pulse-tube coldhead are decoupled from the measurement platform. When measured with the attoAFM I, vibration amplitudes of less than 0.15 nm RMS are routinely achieved (bandwidth of 200 Hz, vertical direction)1
1 Further reading: Quacquarelli, F.P, et al., „Scanning Probe Microscopy in an Ultra-Low Vibration Closed-Cycle Cryostat: Skyrmion Lattice Detection and Tuning Fork Implementation“, Microscopy Today, 23(6), 12-17 (2015)
|technology||ultra-low vibration, pulse-tube based closed-cycle cryostat, designed for scanning probe microscopy applications|
|sample environment||He exchange gas, Constant low pressure (~50 mbar) over complete temperature range|
|sample space||49.7 mm diameter probe bore fitting all attocube inserts|
|sample exchange||top loading system for quick access, Manual gas handling|
|usability||fully automated temperature and magnetic field control via integrated touchscreen, USB interface for remote control|
|vibration & acoustic noise damping system||proprietary low vibration design|
|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)|
|pumping kit||turbomolecular pump with suitable backing pump for sample space preparation|
|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 (on request)|
|scanning Hall probe microscopes||attoSHPM|
|temperature control||Fully automated, including all pumps and valvesTouchscreen & remote control via PC|
|temperature range||1.65 .. 300 K (automated control)|
|base temperature||1.65 (expected), 1.8 K (guaranteed)|
|magnetic field control||via touchscreen, via remote control|
|Max. magnetic field||100 % (e.g. 9 T)|
|cool down time of sample||approx. 3 .. 5 h (depending on insert)|
|initial cool down time of system without insert (unattended)||15 .. 20 h (system without magnet), 20 .. 24 h (incl. 9 T magnet)|
|temperature stability||< ± 5 mK expected (1.5 .. 10 K), < ± 10 mK guaranteed (1.5 .. 10 K)|
|cooling power at sample location||> 2 mW @ 2 K|
|field cooling possible||yes|
|nominal cooling power||> 900 mW @ 4.2 K|
|power consumption||max. 9.0 kW, 7.2 kW steady state|
|cooling of compressor||water cooling (requires local infrastructure)|
|Size and Dimensions|
|cryostat (width x depth x height)||1120 x 640 x 1050 mm³ (depending on magnet choice)|
|required min. ceiling height||approx. 2.60 m ( depending on magnet)|
|optional electronics rack (width x depth x height)||640 x 640 x 1050 mm³|
Fields of Applications
Systems for microscopy and nanoscale analysis of material properties at ambient and low temperature and in high magnetic fields.
Magnetotransport measurements on mesoscopic structures at variable temperatures and in high magnetic fields.
Imaging and scanning probe microscopy of surface properties on the nanoscale at variable temperatures down to milli Kelvin and combination with high magnetic fields.
Optics and Spectroscopy
Confocal microscopy and nanoscale spectroscopy at low temperatures and in high magnetic fields on quantum dots, NV centers, 2D materials, nanowires and other materials.
Prof. A. Holleitner
Experimental Semiconductor Physics group, TU Munich
We are absolutely happy with the cooling performance of the attoDRY2100, both concerning base temperature as well as duration to cool it down from room temperature! Therefore, many thanks for developing such a great system!