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DIXAS
The KETEK DIXAS
(Digital X-ray Acquisition System)
The new DIXAS comprises one of KETEK´s approved VITUS SDD modules, a low noise preamplifier, KETEK´s Digital Pulse Processor – DPP - (digital shaping amplifier plus MCA) and all necessary control electronics and power supplies. The system is ready for operation within minutes after receipt. All settings are performed and controlled through DIXAS software running on a Personal Computer.
DIXAS makes use of all the excellent properties of the KETEK VITUS-SDD Modules and thus is optimally suited for x-ray measurements in XRF, EDX, XRD and scientific applications.
With the current KETEK AXAS (Analogue X-ray Acquisition System) the SDD signal is processed by a low noise preamplifier followed by an analogue shaping amplifier and digitized by the KETEK ADC/MCA. In the new KETEK DIXAS, the SDD signal is digitized immediately after the preamplifier by the KETEK DPP with only some minor signal conditioning added before digitization. The digitized data is then filtered and optimized using KETEK´s unique real-time digital processing algorithms, and finally transferred to the onboard memory. The spectrum is transferred to a PC by the DIXAS software for storage, view and analysis through USB 2.0 full speed interface. The DIXAS system replaces both the analogue shaping amplifier and the ADC/MCA of the AXAS.
- Available for all SDD module types (FWHM 130 eV to 149 eV)
- Integrated detector bias supplies (only ± 12 V input)
- Integrated temperature control circuit (no liquid nitrogen)
- Compact aluminium housing
- Moisture tight, hermetic sealed TO8 detector module
- Vacuum tight configuration (vacuum adapter available)
- Plug and play operation
- 25 MHz sampling frequency
- Onboard 8192 channel MCA
- Gated-integrator digital filter functions
- Shaping times from 0.44 to 4.5 µs
- 16 different digital gain values
- Built in Digital Storage Oscilloscope to monitor the shaped pulses on the PC screen
- Highly efficient digital baseline restorer and pileup rejecter
- Reduced processing time for improved resolution/throughput
- Throughput in excess of 400 kcps
- Electronic setting and control of all SDD parameters (voltages, currents, temperature)
- Stable analytical results with count rate
- Stable analytical results with time
- Low power consumption
- Several DIXAS systems can be controlled through a single PC
- Most compact and smallest Digital X-ray Acquisition System available
