Intrinsic XRF corrections in Timepix3 CdTe spectral detectors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F19%3A10396080" target="_blank" >RIV/00216208:11110/19:10396080 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ubG87Zr.Zb" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ubG87Zr.Zb</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/14/01/C01018" target="_blank" >10.1088/1748-0221/14/01/C01018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Intrinsic XRF corrections in Timepix3 CdTe spectral detectors

Popis výsledku v původním jazyce

One of the limitations of Hybrid Pixel Detectors (HPD) is the intrinsicX-ray fluorescence emission from the detector semiconductor sensor. These fluorescence photons cause artifacts and false peaks in the photon energy spectrum measured by the HPD. ADVAPIX-Timepix3 is an energy dispersive HPD based on a semiconductor sensor (Si/CdTe/CZT/GaAS) and readout by a Timepix3 ASIC. Timepix3 is capable of measuring simultaneous Time-Over-Threshold (Energy) and Time-of-Arrival as well as sparse readout. This allows unambiguous one-by-one photon detection where each photon measurement is assigned a time stamp. In this work, we use the time and energy information of every single photon to identify intrinsic XRF events in a Co-57 radioactive source spectrum as measured by a CdTe based detector. We compute the minimum time (ns) and space (pixels) coincidence window, between the XRF and escape photons, that is required to suppress the XRF effect. These parameters were found to be +/- 15 ns and 10 pixels (pixel size = 55 mu m) for 1mm CdTe at 3000 V/cm, 24 +/- 1 degrees C, and a flux of 1.666 x 10(3) photons/s before correction.

Název v anglickém jazyce

Intrinsic XRF corrections in Timepix3 CdTe spectral detectors

Popis výsledku anglicky

One of the limitations of Hybrid Pixel Detectors (HPD) is the intrinsicX-ray fluorescence emission from the detector semiconductor sensor. These fluorescence photons cause artifacts and false peaks in the photon energy spectrum measured by the HPD. ADVAPIX-Timepix3 is an energy dispersive HPD based on a semiconductor sensor (Si/CdTe/CZT/GaAS) and readout by a Timepix3 ASIC. Timepix3 is capable of measuring simultaneous Time-Over-Threshold (Energy) and Time-of-Arrival as well as sparse readout. This allows unambiguous one-by-one photon detection where each photon measurement is assigned a time stamp. In this work, we use the time and energy information of every single photon to identify intrinsic XRF events in a Co-57 radioactive source spectrum as measured by a CdTe based detector. We compute the minimum time (ns) and space (pixels) coincidence window, between the XRF and escape photons, that is required to suppress the XRF effect. These parameters were found to be +/- 15 ns and 10 pixels (pixel size = 55 mu m) for 1mm CdTe at 3000 V/cm, 24 +/- 1 degrees C, and a flux of 1.666 x 10(3) photons/s before correction.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30224 - Radiology, nuclear medicine and medical imaging

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

C01018

Kód UT WoS článku

000456238600002

EID výsledku v databázi Scopus

2-s2.0-85062490009