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Dosimetry and calorimetry performance of a scientific CMOS camera for environmental monitoring

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Title: Dosimetry and calorimetry performance of a scientific CMOS camera for environmental monitoring
Authors: Aguilar-Arevalo, Alexis, Bertou, Xavier, Canet, Carles, Cruz-Perez, Miguel Angel, Deisting, Alexander, Dias, Adriana, D'Olivo, Juan Carlos, Favela-Perez, Francisco, Garces, Estela A., Munoz, Adiv Gonzalez, Guerra-Pulido, Jaime Octavio, Mancera-Alejandrez, Javier, Marin-Lambarri, Daniel Jose, Montero, Mauricio Martinez, Monroe, Jocelyn, Paling, Sean, Peeters, Simon J. M., Scovell, Paul, Turkoglu, Cenk, Vazquez-Jauregui, Eric, Walding, Joseph
Publication Year: 2020
Collection: Physics (Other)
Subject Terms: Physics - Instrumentation and Detectors, Physics - Applied Physics
More Details: This paper explores the prospect of CMOS devices to assay lead in drinking water, using calorimetry. Lead occurs together with traces of radioisotopes, e.g. Lead-210, producing $\gamma$-emissions with energies ranging from 10 keV to several 100 keV when they decay; this range is detectable in silicon sensors. In this paper we test a CMOS camera (Oxford Instruments Neo 5.5) for its general performance as a detector of x-rays and low energy $\gamma$-rays and assess its sensitivity relative to the World Health Organization upper limit on lead in drinking water. Energies from 6 keV to 60 keV are examined. The CMOS camera has a linear energy response over this range and its energy resolution is for the most part slightly better than 2 %. The Neo sCMOS is not sensitive to x-rays with energies below $\sim\!\!10 keV$. The smallest detectable rate is 40$\pm$3 mHz, corresponding to an incident activity on the chip of 7$\pm$4 Bq. The estimation of the incident activity sensitivity from the detected activity relies on geometric acceptance and the measured efficiency vs. energy. We report the efficiency measurement, which is 0.08$\pm$0.02 % (0.0011$\pm$0.0002 %) at 26.3 keV (59.5 keV). Taking calorimetric information into account we measure a minimal detectable rate of 4$\pm$1 mHz (1.5$\pm$0.1 mHz) for 26.3 keV (59.5 keV) $\gamma$-rays, which corresponds to an incident activity of 1.0$\pm$0.6 Bq (57$\pm$33 Bq). Toy Monte Carlo and Geant4 simulations agree with these results. These results show this CMOS sensor is well-suited as a $\gamma$- and x-ray detector with sensitivity at the few to 100 ppb level for Lead-210 in a sample.
Document Type: Working Paper
Access URL: http://arxiv.org/abs/2009.11227
Accession Number: edsarx.2009.11227
Database: arXiv
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  Data: Dosimetry and calorimetry performance of a scientific CMOS camera for environmental monitoring
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  Data: <searchLink fieldCode="AR" term="%22Aguilar-Arevalo%2C+Alexis%22">Aguilar-Arevalo, Alexis</searchLink><br /><searchLink fieldCode="AR" term="%22Bertou%2C+Xavier%22">Bertou, Xavier</searchLink><br /><searchLink fieldCode="AR" term="%22Canet%2C+Carles%22">Canet, Carles</searchLink><br /><searchLink fieldCode="AR" term="%22Cruz-Perez%2C+Miguel+Angel%22">Cruz-Perez, Miguel Angel</searchLink><br /><searchLink fieldCode="AR" term="%22Deisting%2C+Alexander%22">Deisting, Alexander</searchLink><br /><searchLink fieldCode="AR" term="%22Dias%2C+Adriana%22">Dias, Adriana</searchLink><br /><searchLink fieldCode="AR" term="%22D'Olivo%2C+Juan+Carlos%22">D'Olivo, Juan Carlos</searchLink><br /><searchLink fieldCode="AR" term="%22Favela-Perez%2C+Francisco%22">Favela-Perez, Francisco</searchLink><br /><searchLink fieldCode="AR" term="%22Garces%2C+Estela+A%2E%22">Garces, Estela A.</searchLink><br /><searchLink fieldCode="AR" term="%22Munoz%2C+Adiv+Gonzalez%22">Munoz, Adiv Gonzalez</searchLink><br /><searchLink fieldCode="AR" term="%22Guerra-Pulido%2C+Jaime+Octavio%22">Guerra-Pulido, Jaime Octavio</searchLink><br /><searchLink fieldCode="AR" term="%22Mancera-Alejandrez%2C+Javier%22">Mancera-Alejandrez, Javier</searchLink><br /><searchLink fieldCode="AR" term="%22Marin-Lambarri%2C+Daniel+Jose%22">Marin-Lambarri, Daniel Jose</searchLink><br /><searchLink fieldCode="AR" term="%22Montero%2C+Mauricio+Martinez%22">Montero, Mauricio Martinez</searchLink><br /><searchLink fieldCode="AR" term="%22Monroe%2C+Jocelyn%22">Monroe, Jocelyn</searchLink><br /><searchLink fieldCode="AR" term="%22Paling%2C+Sean%22">Paling, Sean</searchLink><br /><searchLink fieldCode="AR" term="%22Peeters%2C+Simon+J%2E+M%2E%22">Peeters, Simon J. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Scovell%2C+Paul%22">Scovell, Paul</searchLink><br /><searchLink fieldCode="AR" term="%22Turkoglu%2C+Cenk%22">Turkoglu, Cenk</searchLink><br /><searchLink fieldCode="AR" term="%22Vazquez-Jauregui%2C+Eric%22">Vazquez-Jauregui, Eric</searchLink><br /><searchLink fieldCode="AR" term="%22Walding%2C+Joseph%22">Walding, Joseph</searchLink>
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  Data: This paper explores the prospect of CMOS devices to assay lead in drinking water, using calorimetry. Lead occurs together with traces of radioisotopes, e.g. Lead-210, producing $\gamma$-emissions with energies ranging from 10 keV to several 100 keV when they decay; this range is detectable in silicon sensors. In this paper we test a CMOS camera (Oxford Instruments Neo 5.5) for its general performance as a detector of x-rays and low energy $\gamma$-rays and assess its sensitivity relative to the World Health Organization upper limit on lead in drinking water. Energies from 6 keV to 60 keV are examined. The CMOS camera has a linear energy response over this range and its energy resolution is for the most part slightly better than 2 %. The Neo sCMOS is not sensitive to x-rays with energies below $\sim\!\!10 keV$. The smallest detectable rate is 40$\pm$3 mHz, corresponding to an incident activity on the chip of 7$\pm$4 Bq. The estimation of the incident activity sensitivity from the detected activity relies on geometric acceptance and the measured efficiency vs. energy. We report the efficiency measurement, which is 0.08$\pm$0.02 % (0.0011$\pm$0.0002 %) at 26.3 keV (59.5 keV). Taking calorimetric information into account we measure a minimal detectable rate of 4$\pm$1 mHz (1.5$\pm$0.1 mHz) for 26.3 keV (59.5 keV) $\gamma$-rays, which corresponds to an incident activity of 1.0$\pm$0.6 Bq (57$\pm$33 Bq). Toy Monte Carlo and Geant4 simulations agree with these results. These results show this CMOS sensor is well-suited as a $\gamma$- and x-ray detector with sensitivity at the few to 100 ppb level for Lead-210 in a sample.
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  Data: <link linkTarget="URL" linkTerm="http://arxiv.org/abs/2009.11227" linkWindow="_blank">http://arxiv.org/abs/2009.11227</link>
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      – SubjectFull: Physics - Applied Physics
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