DetailErLEED 1000 A
Analog Control Unit for ErLEED 100/150 Optics for LEED Applications
ErLEED 1000 A is a highly reliable analog control unit for erLEED 100/150 optics with primary energy of the electrons variable from 0 - 1000 V, suitable for LEED applications. The unit has 5 independent high-precision HV-modules (primary energy, extractor, Einzel lens, suppressor, screen, detection energy), where lens voltages run as a function of beam energy. True beam current is measured by a fully floating measuring unit. All significant voltages are displayed on digital voltmeters. The control unit offers the possibility to control the electron energy by an external analog voltage and even be used in connection with other commercial LEED optics.
KEY FEATURES
- Fully floating unit measures true beam current
- Lens voltages run as function of beam energy
- 5 independent high-precision HV-modules (primary energy, extractor, Einzel lens, suppressor, screen, detection energy)
- 3 digital meters for current and voltage display
- Primary energy (LEED) 0-1000 eV
- Screen voltage 0-7.5 kV
- Gun voltages (lens 1/3, lens 2 and anode) adjustable with offset and gain
- Input for external control of primary energy 0-10 V
- External measurement of beam current
- External monitoring of primary energy
- 19” rack, height 182 mm, weight 10 kg
- 220-240 V, 50 Hz or 100-120 V,50-60 Hz
SPARE PARTS
LaB6 cathode for ErLEED-optics, for long lifetime and small heating temperature, only for use in UHV. (do not use this filament in non baked vacuum and when using oxygen within the vacuum chamber)
Screencascade for power supplies ErLEED 3000D or ErLEED 1000A
Thoria coated Iridium-Filament for ErLEED , standard filament also for work in non baked vacuum.
