Test of a digitizer to process the pulse signal from the 3 photomultiplier tubes of a TDCR liquid scintillation counter

Coulon, Romain; Gressier, Vincent; Michotte, C

doi:10.1016/j.apradiso.2022.110598

Cited by 5 publications

(3 citation statements)

References 39 publications

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“…In 2023, eight SIR comparison reports were produced and eight were published [17][18][19][20][21][22][23][24]. These reports now include machinereadable data [25], with this format having been applied to the whole SIR database allowing a meta-analysis of the long-term robustness of the SIR over decades of operation [26].…”

Section: Ionizing Radiationmentioning

confidence: 99%

News from the BIPM laboratories—2023

Stock,

Tavella,

Gressier

et al. 2024

Metrologia

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In order to fulfil its mission to ensure and promote the global comparability of measurements, the BIPM operates laboratories in the fields of physical metrology, time, ionizing radiation and chemistry. These laboratories act as centres for scientific and technical collaboration between Member States providing capabilities for international measurement comparisons on a shared cost basis. They coordinate international comparisons of national measurement standards agreed to be of the highest priority, and they establish and maintain appropriate reference standards for use as the basis of key international comparisons at the highest level and provide selected calibrations from them.In the following sections, we provide highlights of the work the laboratories have undertaken during 2023.

show abstract

Section: Ionizing Radiationmentioning

confidence: 99%

News from the BIPM laboratories—2023

Stock,

Tavella,

Gressier

et al. 2024

Metrologia

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show abstract

“…The enhancement of the system to address some alpha-particle emitting radionuclides is also planned, the liquid scintillation system being a more appropriate approach than the SIR for many of them. In parallel, tests of a digital acquisition system were performed using a CAEN DT5730S module to process the TDCR signals [20]. The result is encouraging and a test of the electronics in support of regional SIRTIs is envisaged.…”

Section: Ionizing Radiationmentioning

confidence: 99%

News from the BIPM laboratories—2022

et al. 2023

Self Cite

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In order to fulfil its mission to ensure and promote the global comparability of measurements, the BIPM operates laboratories in the fields of physical metrology, time, ionizing radiation and chemistry. These laboratories act as centres for scientific and technical collaboration between Member States providing capabilities for international measurement comparisons on a shared cost basis. They coordinate international comparisons of national measurement standards agreed to be of the highest priority, and they establish and maintain appropriate reference standards for use as the basis of key international comparisons at the highest level and provide selected calibrations from them. In the following sections, we provide highlights of the work the laboratories have undertaken during 2022.

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“…The recent overhaul of the SIR database in a machinereadable format [7,8] is an opportunity to realize a metaanalysis of SIR measurement data gathered since 1976. Through statistical analysis of the data, the objective is to assess whether the properties of the measured samples or the different experimental set-ups can affect the SIR measurements.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of long-term robustness of the International System of Reference (SIR) used in radionuclide metrology based on the meta-analysis of its machine-readable database

Coulon,

Michotte,

Gressier

2023

Metrologia

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In support of the CIPM MRA, the reference system in radionuclide metrology (SIR) is a unique experimental facility that has been able to provide continuous key comparison results for 72 radionuclides for 46 years. These measurement data are now available in a machine-readable format, which allows statistical analysis of these measurement results to be performed efficiently. Such a meta-analysis was conducted to verify whether or not the accumulated data confirmed the bold assumption made in the 1970s of the long-term robustness of the system over decades of operation. It was notably assumed that variation in the properties of the standard solution to be measured or the choice of the 226Ra reference source would have no impact on the measurement. For the majority of radionuclides measured by the SIR, the non-parametric significance tests of the null hypothesis carried out in this study gave no evidence, at the 95% confidence level, that the above statement should be reconsidered. However, this meta-analysis revealed a significant impact of solution density in the case of 109Cd, corroborating previous observations made in the case of 241Am where the robustness of an ionization chamber with respect to the density variation of the solution does not appear to be perfect. The extension of the SIR by a liquid scintillation system is under development. It will improve the robustness of international comparison results for those borderline cases where radionuclides emit only low-energy x-rays or gamma rays (<100 keV).

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Test of a digitizer to process the pulse signal from the 3 photomultiplier tubes of a TDCR liquid scintillation counter

Cited by 5 publications

References 39 publications

News from the BIPM laboratories—2023

News from the BIPM laboratories—2023

News from the BIPM laboratories—2022

Evaluation of long-term robustness of the International System of Reference (SIR) used in radionuclide metrology based on the meta-analysis of its machine-readable database

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