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Key Features

  • Multiple rather than dual energy imaging
  • Fast photon counting instead of current detection
  • Real-time, full-volume baggage scanning
  • Pseudo computer tomography with no moving sources or detectors
  • Automated material recognition
  • High throughput (up to 1,200 bags per hour)
  • Neural-network learning enhanced detection accuracy for drugs, agricultural products, other contraband
  • CZT Linear Detector Array
  • Multiple rather than dual energy imagindfd
  • Two rows of sixteen (1 mm x 1 mm) pixels
  • Uniform pixel-to-pixel x-ray response
  • Wide x-ray energy range (up to 300 keV High energy resolution (1⁄4 3.5 keV @ 60 keV and 1⁄4 8 keV @ 122 keV)
  • Multispectral imaging capability for scanner applications
  • Short electron collection times (1⁄4 100 ns @ 400 V bias for 2 mm thickness)
  • High-flux operation (up to 2 Mcounts/sec per channel)
  • Low dark current per pixel
  • Room temperature operation

  Details


Description

ABIS is a real-time pseudo computer tomography system originally designed to identify agricultural products in airport baggage. It employs three detector arms, each consisting of eight detector module boards equipped with linear CZT detector arrays read out by the chip FESA™ (Front-end Electronics for Spectroscopy Applications).

Availability

A demonstration of the capabilities of the ABIS detector module is available by request. Each module board holds eight FESA™ chips and eight CZT detector arrays. The FESA™ is currently being redesigned for enhanced features (more channels, wider energy range, significantly improved performance) and fabrication using a submicron process; the detector board design will be updated accordingly. The new detector modules are expected to be available in 2002. Custom versions of the chip and detector module for related high-speed energy-resolved imaging applications are also being considered; inquiries into these possibilities are welcomed.

*ABIS is a real-time computer tomography inspection system developed under the sponsorship of the Army ARDEC and USDA/APHIS as a collaborative effort involving NOVA, ENSCO, eV PRODUCTS and X-Ray & Specialty Instruments.


Images

ABIS_thumbA prototype ABIS detector arm

 


ABIS_thumbRadiographic image of suitcase

 


Documents

  1. ABIS™ Brochure with Specifications
  2. FESA™ Brochure with Specifications
  3. IEEE paper "Front-End Electronics for Spectroscopy Applications (FESA) IC"
  4. SPIE paper "Scanned X-Ray Images from a Linear CdZnTe Pad Array with Monolithic Readout Electronics"
  5. Paper presented at the Conference on Applications of Nuclear Techiques "CdZnTe Detectors for High-Flux X-Ray Imaging


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