Photon counting hybrid pixel detector for X-ray imaging

Seller, P.; Derbyshire, G.E.; Hall, G.; Iles, G.; Jorden, A. R.; Murray, P. G.; Prydderch, M.; Passmore, Stephen; Smith, K. M.; Thomas, S.L.

doi:10.1016/s0168-9002(00)00527-1

Cited by 12 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A 'roof tile' architecture was chosen (see fig. 6 [62]) and should permit a 30 x 30 cm 2 area coverage with minimum dead space [68]. A 64 x 64 pixel readout chip called Aladin 10 was designed for the project in 0.5 µm Mietec technology.…”

Section: Introductionmentioning

confidence: 99%

Development of segmented semiconductor arrays for quantum imaging

Mikulec

2003

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

The field of pixel detectors has grown strongly in recent years through progress in CMOS technology, which permits many hundreds of transistors to be implemented in a square area with a side of 50- This paper gives an introduction into the concept of quantum imaging using direct conversion in segmented semiconductor arrays. An overview of projects from this domain using strip, pad and in particular hybrid pixel detectors will be presented. One of these projects, the Medipix project, is described in more detail. The effect of different correction methods like threshold adjustment and flat field correction is illustrated and new measurement results and images presented.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of segmented semiconductor arrays for quantum imaging

Mikulec

2003

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

show abstract

“…Several groups have now tested such detectors, either as single elements or as prototype, small assemblies [3,4,5,6,7]. The manufacture of a full-scale detector array presents formidable problems of mechanical alignment, stability, connectivity, and heat dissipation [8].…”

Section: Introductionmentioning

confidence: 99%

3DX: a micromachined silicon crystallographic x-ray detector

Morse

Kenney

Westbrook

et al. 2003

X-Ray and Gamma-Ray Detectors and Applications IV

View full text Add to dashboard Cite

We are developing pixel detectors for macromolecular crystallography, in which diffracted X-rays are directly absorbed by high-resistivity, crystalline silicon that has been micro-machined by inductively-coupled plasma etching. Arrays of 64 x 64 holes at 15Ojtm pitch are first formed by etching through the entire silicon bulk, then backfihled with polysilicon that is doped to create conducting p and n type columnar electrodes. When reverse biased, these electrodes generate electric fields that define the individual pixels. By forming conducting polysilicon on the sides of the sensors, which are cut-out of the silicon wafer by plasma etching, the entire surface of the detector may be made active. CMOS readout integrated circuits are conductively bump bonded behind each 3D detector, providing a direct connection to every pixel.A large array will be assembled with no insensitive bands along the edges by overlapping these sensors, each of area 0.96cm2. This detector will measure X-ray signal intensities of up to iO events/pixel/sec without any pile-up loss, by using an integration method that retains the benefits of discrete photon counting. The detector sensitivity will be highly uniform, it will not exhibit any dark signal or spurious noise, and no geometric distortion will occur within each sensor.

show abstract

Hybrid Semiconductor Pixel Detectors for Low‐ and Medium‐EnergyX‐ and Gamma‐Ray Single Photon Imaging Using the Medipix Read‐Out Chip

Russo

2002

Encyclopedia of Imaging Science and Technology

View full text Add to dashboard Cite

After a brief description of microstrip and pixel detectors for radiation imaging with X‐rays and gamma‐rays, the functionality, physical response, and imaging performance of the hybrid pixel detectors based on the Medipix1 photon counting chip for such diverse imaging applications such as digital mammography, synchrotron X‐ray radiation, nuclear medicine, and so on are described. It is concluded that such hybrid pixel detectors, originated from high‐energy physics, have great potential for specific scientific and industrial X‐ and gamma‐ray imaging applications and that the fabrication of large detector arrays or mosaic of detectors for large area imaging is still the main open problem with hybrid detectors.

show abstract

Photon counting hybrid pixel detector for X-ray imaging

Cited by 12 publications

References 3 publications

Development of segmented semiconductor arrays for quantum imaging

Development of segmented semiconductor arrays for quantum imaging

3DX: a micromachined silicon crystallographic x-ray detector

Hybrid Semiconductor Pixel Detectors for Low‐ and Medium‐EnergyX‐ and Gamma‐Ray Single Photon Imaging Using the Medipix Read‐Out Chip

Contact Info

Product

Resources

About