Development of a novel energy-resolved photon-counting detector for gamma ray imaging applications

L. J. Meng, J. W. Tan, K. Spartiotis, T. Schulman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we present the design and preliminary performance evaluation of a novel energy-resolved photon-counting (ERPC) detector for gamma ray imaging applications. The prototype ERPC detector has an active area of 4.4 cm x 4.4 cm, which is pixelated into 128 x 128 square pixels with a pitch size of 350 μm 350 μm. The current detector consists of multiple detector hybrids, each with a CdTe crystal of 1.1 cm x 2.2 cm x 1 mm, bump-bonded onto a customdesigned application-specific integrated circuit (ASIC). The ERPC ASIC has 2048 readout channels arranged in a 3264 array. Each channel is equipped with pre- and shaping-amplifiers, a discriminator, peak/hold circuitry, and an analog-todigital converter (ADC) for digitizing the signal amplitude. In order to compensate for the pixel-to-pixel variation, two 8-bit DACs are implemented into each channel for tuning the gain and offset. The ERPC detector is designed to offer a high spatial resolution, a wide dynamic range of 12-200 keV and a good energy resolution of 3-4 keV. The hybrid detector configuration provides a flexible detection area that can be easily tailored for different imaging applications. The intrinsic performance of a prototype ERPC detector was evaluated with various gamma ray sources, and the results are presented.

Original languageEnglish (US)
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XI
DOIs
StatePublished - Dec 11 2009
EventHard X-Ray, Gamma-Ray, and Neutron Detector Physics XI - San Diego, CA, United States
Duration: Aug 3 2009Aug 6 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7449
ISSN (Print)0277-786X

Other

OtherHard X-Ray, Gamma-Ray, and Neutron Detector Physics XI
CountryUnited States
CitySan Diego, CA
Period8/3/098/6/09

Fingerprint

Photon Counting
Gamma Rays
Gamma rays
counting
Photons
Imaging
Detector
gamma rays
Detectors
Imaging techniques
detectors
photons
Energy
Pixel
application specific integrated circuits
Pixels
pixels
Application specific integrated circuits
Integrated Circuits
energy

Keywords

  • CdTe detector
  • Energy-resolved photon-counting (ERPC)
  • Gamma ray detection

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Meng, L. J., Tan, J. W., Spartiotis, K., & Schulman, T. (2009). Development of a novel energy-resolved photon-counting detector for gamma ray imaging applications. In Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI [74490I] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7449). https://doi.org/10.1117/12.830002

Development of a novel energy-resolved photon-counting detector for gamma ray imaging applications. / Meng, L. J.; Tan, J. W.; Spartiotis, K.; Schulman, T.

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI. 2009. 74490I (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7449).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Meng, LJ, Tan, JW, Spartiotis, K & Schulman, T 2009, Development of a novel energy-resolved photon-counting detector for gamma ray imaging applications. in Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI., 74490I, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7449, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI, San Diego, CA, United States, 8/3/09. https://doi.org/10.1117/12.830002
Meng LJ, Tan JW, Spartiotis K, Schulman T. Development of a novel energy-resolved photon-counting detector for gamma ray imaging applications. In Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI. 2009. 74490I. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.830002
Meng, L. J. ; Tan, J. W. ; Spartiotis, K. ; Schulman, T. / Development of a novel energy-resolved photon-counting detector for gamma ray imaging applications. Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI. 2009. (Proceedings of SPIE - The International Society for Optical Engineering).
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