attoDRY2100

attoDRY2100

automated top-loading cryostat with variable temperature & superconducting magnet

closed-cycle & 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 closed-cycle cryostat 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)

Specifications

General Specifications
technologyultra-low vibration, pulse-tube based closed-cycle cryostat, designed for scanning probe microscopy applications
sample environmentHe exchange gas, Constant low pressure (~50 mbar) over complete temperature range
sample space49.7 mm diameter probe bore fitting all attocube inserts
sample exchangetop loading system for quick access, Manual gas handling
usabilityfully automated temperature and magnetic field control via integrated touchscreen, USB interface for remote control
vibration & acoustic noise damping systemproprietary low vibration design
Performance Data
temperature control Fully automated, including all pumps and valvesTouchscreen & remote control via PC
temperature range1.65 .. 300 K (automated control)
base temperature1.65 (expected), 1.8 K (guaranteed)
magnetic field controlvia touchscreen, via remote control
Max. magnetic field100 % (e.g. 9 T)
cool down time of sampleapprox. 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
Closed-Cycle Cooler
field cooling possibleyes
nominal cooling power> 900 mW @ 4.2 K
power consumptionmax. 9.0 kW, 7.2 kW steady state
cooling of compressorwater 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 heightapprox. 2.60 m ( depending on magnet)
optional electronics rack (width x  depth x height)640 x 640 x 1050 mm³
Options and Upgrades
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)
temperature controllerincluded
pumping kitturbomolecular pump with suitable backing pump for sample space preparation
Compatibility
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 (on request)
scanning Hall probe microscopesattoSHPM
transport measurementsatto3DR
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Customer Feedback

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!