Development of a low-cost monitor for radon detection in air

Elísio, Soraia; Peralta, L.

doi:10.1016/j.nima.2020.164033

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…The sensitive element is a windowless Si PIN photodiode S3590-09 with a photosensitive area of 10 × 10 mm 2 by Hamamatsu (8)(9)(10). The following features make such photodiode particularly suitable for our application:…”

Section: Methodsmentioning

confidence: 99%

Radon detector development using a PIN photodiode

Visca

Amoroso

Calabria

et al. 2023

radon

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An active device for radon detection in air has been developed in the frame of a project carried out by the Physics Department of the University of Torino with the aim to create a monitoring network of radon concentration in the University workplaces. The device uses a commercial planar photodiode, sensitive to alpha particles, and a dedicated electronic chain integrated in an approx. 30 mm by 50 mm printed circuit board (PCB), designed in order to minimize the power consumption. The device can be used not only as alpha particles counter (using the digital output) but also for alpha spectroscopy, connecting the analog signal output from the shaper amplifier to a Multichannel Analyzer (MCA). In this paper, the first prototype of the detector will be presented with the preliminary experimental results. The spectroscopic performances of the device were tested, integrating the sensor in a commercial aluminum box and acquiring the alpha particle spectrum from a calibration source and from rock samples used as radon sources. The radon sensitivity of the detector, in terms of (Counts per hour)/(Bq m−3), was assessed by the comparison with a calibrated commercial radon detector (RAD7 Durridge Inc.). In conclusion, the final prototype will be presented. It is characterized by a new 3d printed plastic case in black PA12 for light shielding, covered by a conductive paint in order to minimize the electromagnetic noise.

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Section: Methodsmentioning

confidence: 99%

Radon detector development using a PIN photodiode

Visca

Amoroso

Calabria

et al. 2023

radon

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“…To achieve this, a sufficient volume is needed to contain sampled air and form an electric field to collect polonium in that air. From this perspective, a radon detector with a large air sample holding chamber was constructed, similar to radon detectors currently being used in other underground laboratories [12][13][14][15][16][17][18][19][20][21][22][23]. This paper discusses the radon concentration measurements in the air from the RRS with a highly sensitive radon detector at the Yemilab.…”

Section: Introductionmentioning

confidence: 99%

Radon concentration measurement with a high-sensitivity radon detector at the Yemilab

Seo,

Kim,

Kim

et al. 2024

J. Inst.

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The radiation emitted from radon is a critical background in rare event search experiments conducted at the Yemi Underground Laboratory (Yemilab) in Jeongseon, Korea. A Radon Reduction System (RRS) has been developed and installed in Yemilab to reduce radon concentration in the air. The RRS primarily provides a purified air of 50 m3/h to the cleanroom used to assemble crystal detectors in the AMoRE, a neutrinoless double beta decay search experiment. RRS can reduce the radon level by a factor of 300, so a high-sensitivity radon detector was required. A highly sensitive radon detector was constructed using a 70 L chamber with a large PIN photodiode to measure radon concentration in the purified air. The radon detector shows an excellent resolution of 72 keV (FWHM) for 6.003 MeV alphas from 218Po decay and a sensitivity down to 23.8 ± 2.1 mBq/m3 with a boil-off N2 gas sample. The radon concentration level from the RRS measured by the radon detector was below 0.29 Bq/m3 with a reduction factor of about 300.

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“…Different instruments and techniques are available for radon detection and quantification [18]. Passive detectors have been used extensively due to their low price, simplicity, small size, lightweight and operation without risk of power loss, clogging or leaks [19].…”

Section: Introductionmentioning

confidence: 99%

Radon in Indoor Air: Towards Continuous Monitoring

et al. 2022

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Radon poses significant health risks. Thus, the continuous monitoring of radon concentrations in buildings’ indoor air is relevant, particularly in schools. Low-cost sensors devices are emerging as promising technologies, although their reliability is still unknown. Therefore, this is the first study aiming to evaluate the performance of low-cost sensors devices for short-term continuous radon monitoring in the indoor air of nursery and primary school buildings. Five classrooms of different age groups (infants, pre-schoolers and primary school children) were selected from one nursery and one primary school in Porto (Portugal). Radon indoor concentrations were continuously monitored using one reference instrument (Radim 5B) and three commercially available low-cost sensors devices (Airthings Wave and RandonEye: RD200 and RD200P2) for short-term sampling (2–4 consecutive days) in each studied classroom. Radon concentrations were in accordance with the typical profiles found in other studies (higher on weekends and non-occupancy periods than on occupancy). Both RadonEye low-cost sensors devices presented similar profiles with Radim 5B and good performance indices (R2 reaching 0.961), while the Airthings Wave behavior was quite different. These results seem to indicate that the RadonEye low-cost sensors devices studied can be used in short-term radon monitoring, being promising tools for actively reducing indoor radon concentrations.

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Development of a low-cost monitor for radon detection in air

Cited by 8 publications

References 13 publications

Radon detector development using a PIN photodiode

Radon detector development using a PIN photodiode

Radon concentration measurement with a high-sensitivity radon detector at the Yemilab

Radon in Indoor Air: Towards Continuous Monitoring

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