3. SYSTEM DESCRIPTION
3.1. Components
The DECTRIS EIGER
®
2 detector system consists of the following components:
• EIGER2 detector
• Power supply unit (PSU)
1
• Detector control unit (DCU)
• Thermal stabilization unit
2
• Accessories
• Documentation
3.2. Hybrid Photon Counting (HPC) Technology
3.2.1. Basic Functionality
DECTRIS
®
X-ray detectors provide direct detection of X-rays with optimized solid-state sensors and CMOS
readout ASICs in hybrid pixel technology. Well-proven standard technologies are employed independently
for both the sensor and the CMOS readout ASIC. The EIGER2 hybrid pixel detector is composed of a sensor, a
two-dimensional array of photodiodes or photoconductors processed in a high-resistivity semiconductor, con-
nected to an array of readout channels designed in advanced CMOS technology. The X-ray detectors operate
in single-photon counting mode and provide outstanding data quality. They feature very high dynamic range,
zero dark signal and zero readout noise and hence achieve optimal signal-to-noise ratio at short readout time
and high frame rates. Large-area detectors with dedicated active areas are built of multiple identical modules
using a modular system concept.
Key Advantages
• Direct detection of X-rays
• Single-photon counting
• Excellent signal-to-noise ratio and very high dynamic range (zero dark signal, zero noise)
• Two energy discriminating thresholds
• Four 16 bit digital counters (two per energy discriminating threshold)
• Short readout time and high frame rates
• Shutterless operation
• Modular system enabling multi-module detectors with a large active area
• Full factory calibration in the specied energy range
1
Some systems might be delivered without an external power supply unit. Please consult the Technical Specications for more infor-
mation.
2
Also referred to as Chiller. Some systems might be delivered without a thermal stabilization unit. Please consult the Technical Speci-
cations for more information.
DECTRIS EIGER
®
2 User Manual v1.8.2 4 | 36
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