top-loading closed-cycle cryostat with superconducting magnet
cryogen-free & low vibration cryostat platform
no liquid helium required & enables SPM
free-beam access in vector magnetic fields
workhorse for quantum optics & magneto-optics applications
toploading insert with 49.7 mm sample space
fast turnaround with large sample space
The attoDRY1000 is a closed-cycle cryostat setting new performance benchmarks. The attoDRY1000 was specifically designed to provide a low vibration measurement platform for cryogenic confocal microscopy without the need for liquid helium. The standard closed-cycle system enables vibration-sensitive experiments with a focus on low temperature optical measurements in a temperature range from 4 K to 80 K. Higher temperatures may also be reached by careful manual control of the pressure inside the cryostat.
A controlled exchange gas atmosphere cools the optionally available microscope inserts. Superconducting vector magnets up to 9-1-1 T are available as an option. The top-loading design enables quick and easy sample exchange, while offering a generous sample space of 49.7 mm in diameter. Due to a proprietary design, mechanical vibrations created by the pulse-tube coldhead are decoupled from the measurement platform.
The lateral vibrations observed in free-beam confocal measurements with a diffraction limited resolution of about 0.5 µm are typically on the order of 50 nm, i.e. a small fraction of the spot size. The long-term stability and ultra-low drift in such experiments is further secured by our low temperature objectives, and our very rigid attoCFM I external optics head.
Despite the mechanical decoupling between coldhead and sample platform, the cooling performance of the closed-cycle attoDRY1000 is outstanding. Temperatures down to 4 K and probe cooldown times as fast as 2 hours make cryogenic confocal experiments a delight.
For routine variable temperature measurements, the closed-cycle cryostat attoDRY2100 with field cooling-capabilities is strongly recommended.
For a detailed definition of used terms and descriptions please visit our Closed-Cycle Cryostats Glossary
|low vibration, pulse-tube based closed-cycle cryostat, designed for confocal microscopy
|He exchange gas, 4-5 different pressure ranges depending on desired sample temperature, requires manual control
|49.7 mm diameter probe bore fitting all attocube inserts
|top loading system for quick access
|vibration & acoustic noise damping system
|proprietary low vibration design
|manual, requires optional temperature controller
|4 .. 80 K (guaranteed), 4 .. 300 K (expected); optional temp. controller required
|< 4 K
|magnetic field control
|manual control via magnet power supply, via remote control
|max. magnetic field
|100 % (e.g. 9 T) @ 4 .. 10 K sample temperature, 67% (e.g. 6 T out of 9 T) @ 10 .. 300 K sample temp
|cool down time of sample
|approx. 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)
|< ± 10 mK expected (4 .. 50 K), < ± 25 mK guaranteed (4 .. 50 K)
|cooling power at sample location
|> 5 mW @ 5 K
|field cooling possible
|nominal cooling power of cold head
|> 900 mW @ 4.2 K
|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
|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
|Options and Upgrades
|solenoids: 9 T, 12 T, vector magnets: e.g.: 9/3 T, 9/1/1 T, ...
|bipolar magnet power supply
|included (with optional magnet)
|2 channel (magnet + sample temperature)
|turbomolecular pump with suitable backing pump for sample space preparation
|attoCFM I, attoCFM IV
|atomic force microscopes
|attoAFM I, AFM upgrade options (MFM, KPFM, PFM, conductive-tip AFM)
Fields of Applications
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.
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.
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.