aNexus attoDRY1000

top-loading closed-cycle cryostat with superconducting magnet

The aNexus attoDRY1000 sets a new standard in closed-cycle cryostats, introducing unparalleled performance capabilities. Specifically engineered to serve as a low vibration platform for cryogenic confocal microscopy, the attoDRY1000 eliminates the need for liquid helium. Its closed-cycle system ensures optimal conditions for vibration-sensitive experiments, facilitating low temperature optical measurements within a temperature range spanning from 4 K to 80 K. With careful manual pressure control, higher temperature settings can also be achieved.

A controlled exchange gas atmosphere efficiently cools the optional microscope inserts, while the system offers compatibility with superconducting vector magnets reaching up to 9-1-1 T. Featuring a convenient top-loading design, the attoDRY1000 facilitates swift and effortless sample exchange, providing a spacious sample area measuring 49.7 mm in diameter. Moreover, thanks to its proprietary design, mechanical vibrations generated by the pulse-tube coldhead are effectively isolated from the measurement platform, ensuring precise and accurate experimentation.

In free-beam confocal measurements, lateral vibrations are typically observed at approximately 50 nm, representing only a fraction of the diffraction-limited resolution of about 0.5 µm. To ensure long-term stability and ultra-low drift in such experiments, our low-temperature objectives and the exceptionally rigid attoCFM I external optics head provide further assurance.

Despite the mechanical decoupling between the coldhead and the sample platform, the closed-cycle attoDRY1000 demonstrates outstanding cooling performance. With the ability to achieve temperatures as low as 4 K and probe cooldown times as rapid as 2 hours, conducting cryogenic confocal experiments becomes a seamless experience.

For routine variable temperature measurements, we highly recommend the closed-cycle cryostat attoDRY2100, which offers field cooling capabilities to meet a diverse range of experimental requirements.