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intelliPEEM

The new intelliPEEM control unit brings a new level of performance and convenience to PEEM investigations. The memory buffer (EEPROM) for storage and retrieval of 10 complete parameter sets significantly simplifies operation of the PEEM. Each stored parameter set may also include data obtained from the optional position read-out to provide repositioning of the sample with an accuracy of 1 micrometer. The microprocessor controlled power supply provides high stability voltage supplies up to 16 kV for operation of all components of the electron optical system. The unit also enables the individual selection of current limits to provide reliable protection against flash-over. The large, main display offers a selection of menus including a schematic graphical display of the microscope column. The display is designed to enable simple intuitive setting of all parameters including currents. Remote control of the unit is possible via the RS 232/Focus-Bridge.

What is PEEM?

The FOCUS PEEM photoemission electron microscope enables real-time surface sensitive, direct imaging with an ultimate resolution below 20 nm, and is suitable for the investigation of surface topography, work function distribution, distribution of chemical elements (spectromicroscopy) and magnetic domain imaging.

Modules

Extractor: 0....+16383 V (0.5 mA)
Focus: 0....+4095 V (2 mA)
Column: 0....2047 V (4 mA)
Stigmator: 8x -102.4 V ...+102.3 V (10 mA)
Projective (2x): 0....2047 V (2 mA)
MCP: 0....6141 V (1 mA)
Screen: 0....12282 V (0.5 mA)
Piezo driver: Remote controlled, piezoelectric
2-axes positioning of sample and/or
contrast aperture.

Specifications

Noise level: < 10 ppm, drift < 100 ppm/h
Storage/retrieval of 10 complete parameter sets
RS 232 + CAN interface for remote control by PC
Mains: 85 - 270 V AC, 50 - 60 Hz

All modules are short circuit protected and equipped with measurement/limit of the output current. The internal bus automatically recognises the available modules and actuates a self diagnosis routine.A position readout is available as an option.

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