High-resolution CMOS particle detectors: design and test issues

Passeri, D.; Placidi, P.; Verducci, L.; Ciampolini, P.; Matrella, Guido; Marras, A.; Bilei, G. M.

doi:10.1109/nssmic.2003.1352057

Cited by 16 publications

(11 citation statements)

References 4 publications

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“…The spectrum region of interest for this operating mode ranges from 10 keV up to a few tens of kiloelectronvolts. This energy range features a lower bound that is smaller than the one of the commercial Active Personal Dosimeters, as pointed out in Section I; furthermore, it conforms well with the detection capabilities of a typical CMOS silicon pixel sensor as demonstrated in numerous papers in the past ten years [22].…”

Section: Methodssupporting

confidence: 80%

“…Commonly exploited for imaging applications, APSs have been proposed in recent years for the detection of single ionizing particles, such as minimum ionizing particles in high-energy physics applications [22], as an alternative to customary architectures based on microstrips or hybrid pixel arrays. In APS schemes, each pixel includes a few control devices (usually MOSFETs), which take care of photodiode buffering, precharge, and reset.…”

Section: Sensormentioning

confidence: 99%

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Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

Conti

Placidi

Biasini

et al. 2013

IEEE Trans. Instrum. Meas.

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Interventional radiologists and staff members, during all their professional activities, are frequently exposed to protracted and fractionated low doses of ionizing radiation. Due to skin tissues and peripheral blood irradiation, these exposures can result in deterministic effects (radiodermatitis, aged skin, and hand depilation) or stochastic ones (skin and non-solid cancer incidence). The authors present a novel approach to perform online monitoring of the staff during their interventions by using a device based on an Active Pixel Sensor. The performance of the sensor as an X-ray radiation detector has been evaluated with a proper experimental setup: the number of photons and the generated charge have been assessed as dosimetric observables from the frames acquired by the sensor using a two-threshold clustering algorithm, the efficiency of which has been evaluated as well. The correlation of these observables with passive dosimeter dose measurements has been analyzed: a good linearity has been demonstrated, and the response difference between pulsed and continuous operational modes is reduced to less than 10%, marking a distinct improvement with respect to commercial Active Personal Dosimeters.Index Terms-Active Personal Dosimeter, CMOS pixels, dosimetry, interventional radiology (IR), X-ray.

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Section: Methodssupporting

confidence: 80%

Section: Sensormentioning

confidence: 99%

Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

Conti

Placidi

Biasini

et al. 2013

IEEE Trans. Instrum. Meas.

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“…A spectrum has been measured using the Amptek X-123 precision spectrometer. The spectrum region of interest for this use-case ranges from 10 keV up to few tens of keV, well within the detection capabilities of a typical CMOS silicon pixel sensor as demonstrated in numerous papers in the past ten years [12].…”

Section: Experimental Set-upmentioning

confidence: 56%

“…Commonly exploited for imaging applications, APS have been proposed in the recent years for detection of single ionizing particles, such as minimum ionizing particles in high-energy physics applications [12], as an alternative to customary architectures based on microstrips or hybrid pixel arrays. In APS schemes, each pixel includes a few control devices (usually MOSFETs), which take care of photodiode buffering, precharge and reset.…”

Section: The Sensormentioning

confidence: 99%

An active pixel sensor based system for real time dosimeter in interventional radiology

Conti

Placidi

Baldaccini

et al. 2012

2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings

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“…Then the collection is done through a p-n junction. A pixel organization of the sensor is often required to obtain high detector sensitivity [2][3][4][5]. Other detectors are based on SRAM detection by counting the bit-flip number [6], but little information is then available about the generated current characteristics and so about the particle features.…”

Section: Introductionmentioning

confidence: 99%

Improvement of a VCO concept for low energy particule detection and recognition

Coulie-Castellani

Rahajandraibe

Micolau

et al. 2014

2014 15th Latin American Test Workshop - LATW

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A way of improvement of an oscillator concept, dedicated to detection and tracking of low energy particles with low fluxes, is presented. The solution is based on an indirect detection of the current generated at the input of the detection chain, through a VCO response. In order to improve the correlation between the input current and the oscillator response, a new way of VCO implementation is proposed. The new output parameter variations are analyzed.

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High-resolution CMOS particle detectors: design and test issues

Cited by 16 publications

References 4 publications

Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

An active pixel sensor based system for real time dosimeter in interventional radiology

Improvement of a VCO concept for low energy particule detection and recognition

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