An algorithm of an X-ray hit allocation to a single pixel in a cluster and its test-circuit implementation
PBN-AR
Instytucja
Wydział Elektrotechniki, Automatyki, Informatyki i Inżynierii Biomedycznej (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
IEEE Transactions on Circuits and Systems. I, Regular Papers (35pkt w roku publikacji)
ISSN
1549-8328
EISSN
1558-0806
Wydawca
Institute of Electrical and Electronics Engineers
DOI
Rok publikacji
2018
Numer zeszytu
1
Strony od-do
185--197
Numer tomu
65
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.9
Autorzy
Pozostali autorzy
+ 6
Słowa kluczowe
EN
active pixel sensors
mixed analog digital integrated circuits
X-ray detectors
semiconductor radiation detectors
asynchronous circuits
radiation detector circuits
Streszczenia
Język
EN
Treść
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 this paper assessing physical implementation of the algorithm.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:111466
CrossrefMetadata from Crossref logo
Cytowania
Liczba prac cytujących tę pracę
Brak danych
Referencje
Liczba prac cytowanych przez tę pracę
Brak danych