Improved setup and characterization of cadmium telluride detector for in-beam X-ray spectrometry up to 300 kV at Czech Metrology Institute

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F25%3AN0000107" target="_blank" >RIV/00177016:_____/25:N0000107 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1748-0221/20/02/P02012" target="_blank" >https://doi.org/10.1088/1748-0221/20/02/P02012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/20/02/P02012" target="_blank" >10.1088/1748-0221/20/02/P02012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improved setup and characterization of cadmium telluride detector for in-beam X-ray spectrometry up to 300 kV at Czech Metrology Institute

Popis výsledku v původním jazyce

The paper describes the measurement geometry and summarizes the improvement in the setup and methods used at Czech Metrology Institute for the spectrometry of X-ray beams with cadmium telluride X-123CdTe detector. The front, lateral, and rear shielding of the detector was enlarged and sources of parasitic contribution to the characteristic peaks in the measured spectrum were supressed. Methodology for an accurate positioning of the detector towards the focus point was improved with a tool allowing to visualize projections of two pinholes using a pixel detector. The estimated uncertainty of the alignment was 0.2◦. The tilt of the aperture axis of tungsten collimation disks with 50 μm and 100 μm aperture diameters, which caused distortion of measured spectra, was determined allowing, together with the improved methodology for the detector alignment, to use these disks in the same way as the other collimation disks with larger aperture diameters. As a result, the range of measurable photon flux was increased roughly by a factor of 19. The instrumentation and methods adopted and optimized at CMI allow to perform mobile in-beam X-ray spectrometry up to 300 kV in laboratory and clinical conditions with the range of collimation disks of nominal aperture diameters starting from 50 μm.

Název v anglickém jazyce

Improved setup and characterization of cadmium telluride detector for in-beam X-ray spectrometry up to 300 kV at Czech Metrology Institute

Popis výsledku anglicky

The paper describes the measurement geometry and summarizes the improvement in the setup and methods used at Czech Metrology Institute for the spectrometry of X-ray beams with cadmium telluride X-123CdTe detector. The front, lateral, and rear shielding of the detector was enlarged and sources of parasitic contribution to the characteristic peaks in the measured spectrum were supressed. Methodology for an accurate positioning of the detector towards the focus point was improved with a tool allowing to visualize projections of two pinholes using a pixel detector. The estimated uncertainty of the alignment was 0.2◦. The tilt of the aperture axis of tungsten collimation disks with 50 μm and 100 μm aperture diameters, which caused distortion of measured spectra, was determined allowing, together with the improved methodology for the detector alignment, to use these disks in the same way as the other collimation disks with larger aperture diameters. As a result, the range of measurable photon flux was increased roughly by a factor of 19. The instrumentation and methods adopted and optimized at CMI allow to perform mobile in-beam X-ray spectrometry up to 300 kV in laboratory and clinical conditions with the range of collimation disks of nominal aperture diameters starting from 50 μm.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF INSTRUMENTATION

ISSN

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e-ISSN

1748-0221

Svazek periodika

20

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

32

Strana od-do

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Kód UT WoS článku

001434679100001

EID výsledku v databázi Scopus

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