XDAS Detection Electronics
XDAS X-ray data acquisition electronics provides the most flexible way of creating X-ray sensor arrays which are read out digitally at high speed.
Sens-Tech supplies a range of XDAS acquisition and signal processing electronics to provide an array of any required length in one or two dimensions.
Single and dual energy detector electronics with pitches of between 0.4mm are 2.5mm are available for low to high energy applications. X-rays are detected using silicon photodiodes and scintillation materials from a wide a range of materials. GOS, ZnSe, CsI(Tl), CdWO4 and other more exotic chemistries are available.
Our product specialists with decades of experience will help you select the best scintillators for your application. Materials for all photodiode sizes are available and in stock to cover the X-ray energy range of 5keV to 10MeV.
Plug and play LINX units are also available for all standard belt widths but where something bespoke is recquired our team of specialist mechnical design engineers would be happy to design something new for you.
Specifications and useage
KEY FEATURES
- Front end gain for one sample of up to 60pC
- Industry’s fastest minimum scan time of 42.7µs
- 31 gain steps from 1.875 pC to 60 pC
- 2 and 4 sub-samples possible for optimum SNR
- Single and dual energy versions with independent control
- Widest choice of detector types in stock for 5keV to 10MeV
- Standard 0.4mm, 0.8mm, 1.6mm, 2.5mm and larger pitch options
- 2D – TDI, CT and HE also available upon request
DESCRIPTION
XDAS single and dual energy modular high speed and low noise arrays are built up of Sens-Tech XDAS DH (Detector Head) and SP (Signal Processing) boards to provide an array of any length. The gain for each DH board can be set separately and a huge number of other parameters are available to give the maximum imaging control.
The XDAS electronics will need to be housed to protect the electronics from the machine environment and with adequate screening to protect the electronics from radiation damage. A perfect Farraday cage is essential to keep interference out.
PRINCIPLES OF OPERATION
X-rays are detected using a wide range of scintillator chemistries and thicknesses and photodiode array sizes suitable offered to cover the energy range of 20keV to 300keV.
Data acquisition time can be set from 50µs to 50ms subject to the active length and data is sampled in a 16-bit format. The read-out rate from the detector to a client workstation via GIGE ethernet is up to 48MB/s.
APPLICATIONS
XDAS detectors are used by hundreds of customers all over the world for any XRT application; here are some examples:
- Food – Smallest foreign object detection
- Food – Highest seperation to maximise yield
- Waste – Maximum reclaim rare earth metal seperation
- Security – High speed CT baggage scanning
- Security – Conventional baggage scanning
- Security – High dose cargo/vehicle scanning
- Security – Low dose body scanning
- Steel – Maximum SNR thickness gauging
- Mining – Mineral sorting to maximise yield
- Wood – Foreign object detection/Quality control
