attoDRY1000

attoDRY1000

top-loading cryostat with superconducting magnet

cryogen-free & low vibration cryostat platform

no liquid helium required & enables SPM

toploading insert with 49.7 mm sample space

larger sample space than most competitors

low Temp. (4 K) & high magnetic fields (up to 12 T)

quantum optics & magneto-optics applications

The attoDRY1000 is a closed-cycle cryostat setting new performance benchmarks. The attoDRY1000 was specifically designed to provide an ultra-low vibration measurement platform for cryogenic confocal microscopy without the need for liquid helium. The standard closed-cycle system enables vibration-sensitive experiments in a temperature range from 4 K to 300 K. The optionally available microscope inserts are cooled by a controlled exchange gas atmosphere. Superconducting magnets up to 9 T are available as an option. 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.

Despite the mechanical decoupling between coldhead and sample platform, the cooling performance of the attoDRY1000 is simply outstanding. Temperatures as low as 3 K and probe cooldown times as fast as 1 hour make cryogenic scanning probe experiments a delight. For the attoDRY1000, a wide variety of scanning probe microscopy inserts is available, ranging from confocal (CFM) to magnetic force microscopy (MFM), as well as transport measurement inserts (atto3DR).

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

Closed-Cycle Cooler
cooling of compressorwater cooling (requires local infrastructure)
field cooling possibleno
nominal cooling power> 900 mW @ 4.2 K
power consumptionmax. 9.0 kW, 7.2 kW steady state
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
General Specifications
technologyultra-low vibration, pulse-tube based closed-cycle cryostat, designed for scanning probe microscopy applications
sample environmentHe exchange gas, 4-5 different pressure ranges depending on desired sample temperature, requires manual control
sample space49.7 mm diameter probe bore fitting all attocube inserts
sample exchangetop loading system for quick access, Manual gas handling
vibration & acoustic noise damping systemproprietary low vibration design
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 controller2 channel (magnet + sample temperature)
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
Performance Data
temperature control Manual, requires optional temperature controller
temperature range4 .. 300 K (optional temp. controller required)
base temperature4 K (guaranteed), 3.2 (expected)
magnetic field controlmanual control via magnet power supply, via remote control
Max. magnetic field100 % (e.g. 9 T) @ 4 K sample temperature, 67% (e.g. 6 T out of 9 T) @300 K sample temperature, 100 % guaranteed for temperature between 4 and 10 K
cool down time of sampleapprox. 2 h (depending on insert)
cool down time of system (system incl. 9 T magnet)approx. 10 .. 15 h (unattended)
cool down time of system (system without magnet)approx. 5 .. 10 h (unattended)
temperature stability< ± 10 mK expected (4 .. 50 K), < ± 25 mK guaranteed (4 .. 50 K)
cooling power at sample location> 5 mW @ 5 K
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Customer Feedback

Prof. A. Högele

Nanophotonics group, Ludwig-Maximilians-University Munich

The attoDRY1000 has quickly become an integral part of the research equipment in our group. The closed-cycle system is easy to operate while providing for excellent stability, short cool down times and low vibration level for optical spectroscopy of solid-state quantum systems. The compatibility with previous versions of CFM-line microscopes and the plug-and-play operation without cryogenic liquids make attoDRY1000 a really attractive alternative to conventional cryogenic spectroscopy in bath cryostat systems.

Prof. M. Atatüre

University of Cambridge, Department of Physics, UK

The delivery of the attoDRY1000 was well within the anticipated time frame, the installation was carried out successfully and since then, the system has given full satisfaction. All quoted specifications were fulfilled or exceeded and the service, maintenance and support have proven to be excellent. The unit has been operational since the first day and continues to function with no interruptions. I can verify that, in contrast to typical liquid systems, the attoDRY1000 continues to operate without the typical interruption of cryogenics refill, allowing data acquisition around the clock for months.

Dr. B. Alén Milán

Molecular Beam Epitaxy group, Instituto de Microelectrónica de Madrid

In contrast to many other such complex pieces of equipment, we were able to perform our first regular measurements already after 2 weeks, and since then, have been very pleased with the performance of the attoDRY1000.

Prof. M. Daldin

UFSCar, Universidade Federal de São Carlos, São Carlos, Brazil

Thanks to the versatility of the attoDRY1000 used with the attoCFMI, the system has been serving our research group in different kinds of optical and electronic transport measurements. It's incredible stability on a cryo-free enviroment is the key for succesfully running measurements over long periods of time. We are also very glad with the first class technical support provided by attocube.