A pixel detector asic for dosimetry using time-over-threshold energy measurements

In this work we present the design of a chip which provides the readout of a highly segmented diode array, in which signals induced by individual X-ray photons are processed discretely. There are several benefits to this approach, including the ability to achieve a high signal to noise ratio due to...

Descripción completa

Detalles Bibliográficos
Autores principales: Wong, W S, Anton, G, Ballabriga, R, Bohnel, M, Campbell, M, Heijne, E, Llopart, X, Michel, T, Munster, I, Plackett, R, Sievers, P, Takoukam, P, Tlustos, L, Valerio, P
Publicado: 2011
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.radmeas.2011.06.061
http://cds.cern.ch/record/1447124
_version_ 1780924816721707008
author Wong, W S
Anton, G
Ballabriga, R
Bohnel, M
Campbell, M
Heijne, E
Llopart, X
Michel, T
Munster, I
Plackett, R
Sievers, P
Takoukam, P
Tlustos, L
Valerio, P
author_facet Wong, W S
Anton, G
Ballabriga, R
Bohnel, M
Campbell, M
Heijne, E
Llopart, X
Michel, T
Munster, I
Plackett, R
Sievers, P
Takoukam, P
Tlustos, L
Valerio, P
author_sort Wong, W S
collection CERN
description In this work we present the design of a chip which provides the readout of a highly segmented diode array, in which signals induced by individual X-ray photons are processed discretely. There are several benefits to this approach, including the ability to achieve a high signal to noise ratio due to the inherently low sensor capacitance, and the suppression of background noise (e.g. dark current) using an analogue threshold. The segmentation also ensures a linear behaviour even at very high dose rates. A time over threshold (ToT) energy measurement technique provides an immediate digital value corresponding to the energy deposited onto the diode by each individual photon. Deadtime-free operation is achieved by reading out a subset of the detector segments at a time while the rest of the detector continues to process signals. This paper describes the application-specific integrated circuit (ASIC) chip which was designed to provide pre-processing of photo-induced signals in the detector and readout of the processed digital data.
id cern-1447124
institution Organización Europea para la Investigación Nuclear
publishDate 2011
record_format invenio
spelling cern-14471242019-09-30T06:29:59Zdoi:10.1016/j.radmeas.2011.06.061http://cds.cern.ch/record/1447124Wong, W SAnton, GBallabriga, RBohnel, MCampbell, MHeijne, ELlopart, XMichel, TMunster, IPlackett, RSievers, PTakoukam, PTlustos, LValerio, PA pixel detector asic for dosimetry using time-over-threshold energy measurementsDetectors and Experimental TechniquesIn this work we present the design of a chip which provides the readout of a highly segmented diode array, in which signals induced by individual X-ray photons are processed discretely. There are several benefits to this approach, including the ability to achieve a high signal to noise ratio due to the inherently low sensor capacitance, and the suppression of background noise (e.g. dark current) using an analogue threshold. The segmentation also ensures a linear behaviour even at very high dose rates. A time over threshold (ToT) energy measurement technique provides an immediate digital value corresponding to the energy deposited onto the diode by each individual photon. Deadtime-free operation is achieved by reading out a subset of the detector segments at a time while the rest of the detector continues to process signals. This paper describes the application-specific integrated circuit (ASIC) chip which was designed to provide pre-processing of photo-induced signals in the detector and readout of the processed digital data.oai:cds.cern.ch:14471242011
spellingShingle Detectors and Experimental Techniques
Wong, W S
Anton, G
Ballabriga, R
Bohnel, M
Campbell, M
Heijne, E
Llopart, X
Michel, T
Munster, I
Plackett, R
Sievers, P
Takoukam, P
Tlustos, L
Valerio, P
A pixel detector asic for dosimetry using time-over-threshold energy measurements
title A pixel detector asic for dosimetry using time-over-threshold energy measurements
title_full A pixel detector asic for dosimetry using time-over-threshold energy measurements
title_fullStr A pixel detector asic for dosimetry using time-over-threshold energy measurements
title_full_unstemmed A pixel detector asic for dosimetry using time-over-threshold energy measurements
title_short A pixel detector asic for dosimetry using time-over-threshold energy measurements
title_sort pixel detector asic for dosimetry using time-over-threshold energy measurements
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1016/j.radmeas.2011.06.061
http://cds.cern.ch/record/1447124
work_keys_str_mv AT wongws apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT antong apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT ballabrigar apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT bohnelm apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT campbellm apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT heijnee apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT llopartx apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT michelt apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT munsteri apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT plackettr apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT sieversp apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT takoukamp apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT tlustosl apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT valeriop apixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT wongws pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT antong pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT ballabrigar pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT bohnelm pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT campbellm pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT heijnee pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT llopartx pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT michelt pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT munsteri pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT plackettr pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT sieversp pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT takoukamp pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT tlustosl pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements
AT valeriop pixeldetectorasicfordosimetryusingtimeoverthresholdenergymeasurements