Products | AXAS-A

Analytical X-Ray
Acquisition Systems - Analog

 

Short Facts

  • highly integrated design
  • KETEK reset type preamplifier
  • filtering for SDD operating voltages
  • SDD operating temperature readout
  • VITUS SDD sizes (7 – 50 mm²) available
  • adaptable finger length
  • optional Shaping Amplifier
  • from 0.25 to 6µs analog shaping time
  • optional ADC/MCA plus KETEK Acquisition Software (Windows XP)

Complete Analog Detector System
AXAS-A

Performance

Throughput: The diagram provides the throughput behaviour of the AXAS-A. It shows the dependency of the output count rate with the input count rate for different analogue shaping times. The lower the shaping time, the higher is the maximum throughput for a system.


Throughput: The diagram provides the throughput behaviour of the AXAS-A. It shows the dependency of the output count rate with the input count rate for different analogue shaping times. The lower the shaping time, the higher is the maximum throughput for a system.


Energy Resolution

Energy Resolution with Input Count Rate: The energy resolution of the analogue system is dependent on 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 analogue shaping times.


Peak Position: The graph shows the dependency of the peak position of the Mn-Ka line with the input count rate for different analogue shaping times.

AXAS-A output versus input count rate

Sample Spectrum

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Typical spectrum of a 7mm² KETEK VITUS SDD in AXAS-A, taken with KETEK Shaper and ADC/MCA at 6µs shaping time.


Block Diagram

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The AXAS-A has basically two outputs: Preamplifier Output and Shaping Amplifier Output. The Preamplifier Output can be used to connect any external pulse processing system. The Shaping Amplifier Output provides an output signal between 0 and +5V and can therefore be used as an input signal to the KETEK ADC/MCA or any other standard ADC/MCA. The ADC/MCA is then connected via USB to a host PC.

AXAS-A Connection Diagram
AXAS-A Connection Diagram

AXAS-A Pin Assignment

  • 15-pole Sub-D Connector (see table)
  • exponential decay preamplifier output
  • shaping amplifier semi-gaussian output
  • pulser test input
  • temperature monitor output in Kelvin/100 [V]
  • 2.73 V → 273 K
  • power indicator LED for ±12 V

AXAS Pin Assignment
1 2 3 4 5
PUR PUR GND GND GND
AXAS Pin Assignment
6 7 8 9 10
+12V GND GND GND -12V
AXAS Pin Assignment
11 12 13 14 15
SCK* SDO* SOT* ALD* L5318*

* for KETEK ADC/MCA hand-shaking


Geometries

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All AXAS have compact aluminium housings plated with Nickel. All screws are stainless steel and the systems can be fixed to a plate by using M3 screws. The mounting plates are compatible for all AXAS.

VITUS H7 Detector Geometry
AXAS A Geometry

Versions and Ordering Codes

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Available options for AXAS-A:


Accessories

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