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Title: An Algorithm of an X-ray Hit Allocation to a Single Pixel in a Cluster and Its Test-Circuit Implementation

Abstract

An on-chip implementable algorithm for allocation of an X-ray photon imprint, called a hit, to a single pixel in the presence of charge sharing in a highly segmented pixel detector is described. Its proof-of-principle implementation is also given supported by the results of tests using a highly collimated X-ray photon beam from a synchrotron source. The algorithm handles asynchronous arrivals of X-ray photons. Activation of groups of pixels, comparisons of peak amplitudes of pulses within an active neighborhood and finally latching of the results of these comparisons constitute the three procedural steps of the algorithm. A grouping of pixels to one virtual pixel that recovers composite signals and event driven strobes to control comparisons of fractional signals between neighboring pixels are the actuators of the algorithm. The circuitry necessary to implement the algorithm requires an extensive inter-pixel connection grid of analog and digital signals that are exchanged between pixels. A test-circuit implementation of the algorithm was achieved with a small array of 32×32 pixels and the device was exposed to an 8 keV highly collimated to a diameter of 3 μm X-ray beam. The results of these tests are given in the paper assessing physical implementation of the algorithm.

Authors:
 [1];  [2];  [1];  [2];  [1];  [3];  [1]; ORCiD logo [2];  [2]
  1. AGH-UST, Cracow
  2. Fermilab
  3. Brookhaven
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1409071
Report Number(s):
FERMILAB-PUB-17-145-PPD
Journal ID: ISSN 1549-8328; 1635811
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Resource Relation:
Journal Name: IEEE Transactions on Circuits and Systems I: Regular Papers
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 97 MATHEMATICS AND COMPUTING

Citation Formats

Deptuch, G. W., Fahim, F., Grybos, P., Hoff, J., Maj, P., Siddons, D. P., Kmon, P., Trimpl, M., and Zimmerman, T. An Algorithm of an X-ray Hit Allocation to a Single Pixel in a Cluster and Its Test-Circuit Implementation. United States: N. p., 2017. Web. doi:10.1109/TCSI.2017.2713767.
Deptuch, G. W., Fahim, F., Grybos, P., Hoff, J., Maj, P., Siddons, D. P., Kmon, P., Trimpl, M., & Zimmerman, T. An Algorithm of an X-ray Hit Allocation to a Single Pixel in a Cluster and Its Test-Circuit Implementation. United States. doi:10.1109/TCSI.2017.2713767.
Deptuch, G. W., Fahim, F., Grybos, P., Hoff, J., Maj, P., Siddons, D. P., Kmon, P., Trimpl, M., and Zimmerman, T. Sat . "An Algorithm of an X-ray Hit Allocation to a Single Pixel in a Cluster and Its Test-Circuit Implementation". United States. doi:10.1109/TCSI.2017.2713767. https://www.osti.gov/servlets/purl/1409071.
@article{osti_1409071,
title = {An Algorithm of an X-ray Hit Allocation to a Single Pixel in a Cluster and Its Test-Circuit Implementation},
author = {Deptuch, G. W. and Fahim, F. and Grybos, P. and Hoff, J. and Maj, P. and Siddons, D. P. and Kmon, P. and Trimpl, M. and Zimmerman, T.},
abstractNote = {An on-chip implementable algorithm for allocation of an X-ray photon imprint, called a hit, to a single pixel in the presence of charge sharing in a highly segmented pixel detector is described. Its proof-of-principle implementation is also given supported by the results of tests using a highly collimated X-ray photon beam from a synchrotron source. The algorithm handles asynchronous arrivals of X-ray photons. Activation of groups of pixels, comparisons of peak amplitudes of pulses within an active neighborhood and finally latching of the results of these comparisons constitute the three procedural steps of the algorithm. A grouping of pixels to one virtual pixel that recovers composite signals and event driven strobes to control comparisons of fractional signals between neighboring pixels are the actuators of the algorithm. The circuitry necessary to implement the algorithm requires an extensive inter-pixel connection grid of analog and digital signals that are exchanged between pixels. A test-circuit implementation of the algorithm was achieved with a small array of 32×32 pixels and the device was exposed to an 8 keV highly collimated to a diameter of 3 μm X-ray beam. The results of these tests are given in the paper assessing physical implementation of the algorithm.},
doi = {10.1109/TCSI.2017.2713767},
journal = {IEEE Transactions on Circuits and Systems I: Regular Papers},
number = ,
volume = ,
place = {United States},
year = {Sat May 06 00:00:00 EDT 2017},
month = {Sat May 06 00:00:00 EDT 2017}
}