Dose Measurement of Hard X-ray Produced by Damavand Tokamak by Means of LiF:Mg, Cu, P TLDs

Pourshahab, B.; Rasouli, C.; Pooya, S.M. Hosseini; Rasouli, H.; Sadigzadeh, A.; Habibi, Hossein

doi:10.1007/s10894-012-9593-6

Cited by 7 publications

(1 citation statement)

References 6 publications

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“…However, following the design and construction of a lead shielding wall with a thickness of 5 cm and dimensions of 2 m × 7.5 m [18], the occupational exposure of operators was significantly reduced. The only radiation source in nuclear agriculture is a high-dose gamma irradiation system.…”

Section: Resultsmentioning

confidence: 99%

Occupational external exposure to ionizing radiation in research-associated activities in Iran (2015-2020)

Pooya¹,

Hosseinipanah²

2022

J. Radiol. Prot.

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Research is the integral part of radiological and nuclear activities; thus, workers may receive different levels of occupational exposure. In the present study, occupational external exposure of workers was studied at the largest radiological and nuclear research institute of Iran over 2015 to 2020. The activities included research reactors, nuclear fuel cycle, development on radiopharmaceuticals and radioisotopes, particle accelerators, plasma and fusion, and nuclear agriculture. The average doses of the monitored and exposed workers were calculated to be 0.095 and 0.575 mSv, respectively, which were around their corresponding worldwide values. Moreover, the results showed that in comparison with other research activities, the workers in research reactors, nuclear fuel cycle, and development of radiopharmaceuticals and radioisotopes may face higher occupational risks. It could be therefore concluded that all the radiation protection measures have been effective to achieve safe research activities in Iran.

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Section: Resultsmentioning

confidence: 99%

Occupational external exposure to ionizing radiation in research-associated activities in Iran (2015-2020)

Pooya¹,

Hosseinipanah²

2022

J. Radiol. Prot.

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Measurement of the radiation dose distribution in EAST hall based on thermoluminescence dosimeter

Zhou

Huang

et al. 2020

Fusion Engineering and Design

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Study of runaway electrons using dosimetry of hard x-ray radiations in Damavand tokamak

Rasouli

Pourshahab

Pooya

et al. 2014

Review of Scientific Instruments

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In this work several studies have been conducted on hard x-ray emissions of Damavand tokamak based on radiation dosimetry using the Thermoluminescence method. The goal was to understand interactions of runaway electrons with plasma particles, vessel wall, and plasma facing components. Total of 354 GR-200 (LiF:Mg,Cu,P) thermoluminescence dosimeter (TLD) crystals have been placed on 118 points--three TLDs per point--to map hard x-ray radiation doses on the exterior of the vacuum vessel. Results show two distinctive levels of x-ray radiations doses on the exterior of the vessel. The low-dose area on which measured dose is about 0.5 mSv/shot. In the low-dose area there is no particular component inside the vessel. On the contrary, on high-dose area of the vessel, x-ray radiations dose exceeds 30 mSv/shot. The high-dose area coincides with the position of limiters, magnetic probe ducts, and vacuum vessel intersections. Among the high-dose areas, the highest level of dose is measured in the position of the limiter, which could be due to its direct contact with the plasma column and with runaway electrons. Direct collisions of runaway electrons with the vessel wall and plasma facing components make a major contribution for production of hard x-ray photons in Damavand tokamak.

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Dose Measurement of Hard X-ray Produced by Damavand Tokamak by Means of LiF:Mg, Cu, P TLDs

Cited by 7 publications

References 6 publications

Occupational external exposure to ionizing radiation in research-associated activities in Iran (2015-2020)

Occupational external exposure to ionizing radiation in research-associated activities in Iran (2015-2020)

Measurement of the radiation dose distribution in EAST hall based on thermoluminescence dosimeter

Study of runaway electrons using dosimetry of hard x-ray radiations in Damavand tokamak

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