Journal
JOURNAL OF INSTRUMENTATION
Volume 11, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1748-0221/11/12/P12013
Keywords
Instrumentation for synchrotron radiation accelerators; X-ray detectors
Categories
Funding
- U.S. National Science Foundation
- U.S. National Institutes of Health/National Institute of General Medical Sciences via NSF award [DMR-1332208]
- U.S. National Institutes of Health/National Institute of General Medical Sciences via U.S. Department of Energy Award [DE-FG02-1-0ER46693, DE-SC0016035]
- W.M. Keck Foundation
Ask authors/readers for more resources
Pixel Array Detectors (PADs) consist of an x-ray sensor layer bonded pixel-by-pixel to an underlying readout chip. This approach allows both the sensor and the custom pixel electronics to be tailored independently to best match the x-ray imaging requirements. Here we present characterizations of CdTe sensors hybridized with two different charge-integrating readout chips, the Keck PAD and the Mixed-Mode PAD (MM-PAD), both developed previously in our laboratory. The charge-integrating architecture of each of these PADs extends the instantaneous counting rate by many orders of magnitude beyond that obtainable with photon counting architectures. The Keck PAD chip consists of rapid, 8-frame, in-pixel storage elements with framing periods < 150 ns. The second detector, the MM-PAD, has an extended dynamic range by utilizing an in-pixel overflow counter coupled with charge removal circuitry activated at each overflow. This allows the recording of signals from the single-photon level to tens of millions of x-rays/pixel/frame while framing at 1 kHz. Both detector chips consist of a 128 x 128 pixel array with (150 mu m)(2) pixels.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available