The AT-F7-AIR is ideal for high precision scans with a fixed aperture. AT-F7-AIR is part of the ESRF-Type X-RAY slit family and was initially designed and developed by ESRF engineers and scientists to address the need for compact, reliable, high-precision slits with sub-micron resolution. The design is now licensed to JJ X-Ray.

The slit system holds four motors which set the position and the opening of the aperture. For each dimension, one motor defines the aperture opening, and another determines the position of the aperture. Because only one motor is moved during a one-dimensional scan, the AT-F7-AIR is the optimum choice for high precision scans with a fixed aperture.

A distinctive feature of the AT-F7-HV and AT-F7-AIR slit systems are the flexible positioning of their 7mmx7mm aperture due to a total translation travel range of 14 mm.

Show more

Technical specifications

Aperture size
Maximum: 7 mm x 7 mm
Minimum: Full overlap

Aperture: 0.813 microns per full step
Translation: 0.322 microns per full step

< 1 micron

± 3 microns (over 3 mm)

Standard blades
2 mm thick tungsten carbide blades with a 2 degrees knife-edge profile

Limit switches (end-of-travel)
Included as standard on all motions

High precision internal rails and carriages

Electrical connections
Limit switches coupled to 2 motor connectors (SUB-D 15 pins male)

2-phase stepping motors

Mechanical dimensions
113 mm x 113 mm x 45 mm

Mechanical connections
4 M4-threaded holes on each front of the houses and 2 M4-threaded holes on each bottom side, as shown on the drawing.

≈ 0.6 kg

Outer surface
Anodized aluminum in color nature

Common options
Blade: Other blade shapes and materials
Vacuum Preparation: Possible down to 10-5 mbar for use inside a larger vacuum chamber
Gimble: For aligning blade angle in a beam (relevant for rectangular blades)