ARTOF 10k

The ARTOF 10k is a new ultra high resolution electron energy analyzer for fast 2D band mapping. The instrument design combines the flight tube of a time of flight spectrometer with VG Scienta electron optics and becomes a spectrometer for Angular Resolved Time Of Flight (ARTOF) measurements. It requires a pulsed photon source with a maximum repetition rate of 30 kHz. The ARTOF 10k simultaneously improves energy resolution, angular resolution as well as transmiss

The ARTOF 10k has the following specifications/target specifications:

• Ekin = 0.2 – 20 eV with Eresolution < 1 meV in a solid angle of 0.22 steradians
• Best energy resolution: < 150 µeV
(assuming an electronics time resolution of 100 ps and an energy window of 0.1 eV and a source size of < 0.4 mm)
• Energy windows: 0.1 eV and 0.5 eV
• Best Angular Resolution: < 0.08°
• Maximum Angular range: ±18°
• Angular resolved modes: ±7°, ±15°
• Possible energy range: 0.2 eV – 1000 eV with Eresolution < 50 meV in a solid angle of 0.22 steradians
• Working distance: 40 mm
• Double mu-metal shielded spectrometer tank
• Extremely stable and low noise electronics
• Strictly non-magnetic materials used in the interior
• Delay-line detector with 40 mm MCP

In contrast to traditional electron spectrometers the ARTOF 10k design does not include slits. Therefore, energy and angle information is gathered in a complete cone. The maximum acceptance angle, with full detection, is ±18°. In this way transmission is increased up to 250 times compared to traditional hemispherical electron analyzers.