Short Facts
M1 - Detector Head Unit
- thermal optimized housing
- KETEK reset type preamplifier
- filtering for SDD operating voltages
- SDD operating temperature readout
- all VITUS SDD sizes (7 – 100 mm²) available
- adaptable finger length
M2 - Supply and Signal Processing Unit
- customized modular housing
- standardized Euro-PCB plug-in slots
- linear regulated power supplies
- international wide range power input
- optional KETEK Digital Pulse Processor (DPP)
Performance
Throughput: The diagram provides the throughput behaviour of the AXAS-M including the optional Digital Pulse Processor (DPP). It shows the dependency of the output count rate with the input count rate for different digital peaking times. The lower the peaking time, the higher is the maximum throughput for a system.
Energy Resolution with Input Count Rate: The energy resolution of the AXAS-M including a Digital Pulse Processor is mostly independent from the input count rate. The graph shows the dependency of the Full Width at half maximum with the incoming photons (input count rate) for different digital peaking times.
Sample Spectrum
Block Diagram
The diagram provides the principle of operation of an AXAS-M. It shows the SDD module including the Peltier element, the FET, temperature sensor and the SDD Chip itself. Together with the Preamplifier including all necessary filtering, voltage dividers and groundings, it forms the AXAS-M1. AXAS-M2 consists of a wide range input power supply, a high voltage module, a Peltier (TEC) Controller module and optional signal processing units.
