A Technique for Measuring Dose Equivalent and Neutron Fluxes in Radiation Environments Using Silicon Diodes

Hands, A.; Dyer, C. S.

doi:10.1109/tns.2009.2034000

Cited by 20 publications

(34 citation statements)

References 15 publications

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“…The facility is frequently used for nSER studies and testing, see e.g. [13][14][15][16], studies of ageing effects in image sensors [17], development/calibration CUP -a new high-flux irradiation position at the ANITA neutron facility at TSL Alexander V. Prokofiev, Member, IEEE, Elke Passoth, Anders Hjalmarsson, and Mitja Majerle T of neutron monitors [18][19][20][21][22], etc.…”

Section: A the Conventional Anita Facilitymentioning

confidence: 99%

CUP–A New High-Flux Irradiation Position at the ANITA Neutron Facility at TSL

Prokofiev

Passoth

Hjalmarsson

et al. 2014

IEEE Trans. Nucl. Sci.

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Abstract-A new irradiation position has been constructed, characterized, and put into operation at the ANITA facility in The Svedberg Laboratory (TSL) for accelerated testing of components and systems for single event effects. Results of beam characterization measurements are reported. The energyintegrated neutron flux above 10 MeV, amounting to more than 10 7 cm -2 •s -1 , is the highest among the facilities with atmosphericlike spectra. The employed characterization and simulation techniques are applicable for a broad class of neutron facilities.

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Section: A the Conventional Anita Facilitymentioning

confidence: 99%

CUP–A New High-Flux Irradiation Position at the ANITA Neutron Facility at TSL

Prokofiev

Passoth

Hjalmarsson

et al. 2014

IEEE Trans. Nucl. Sci.

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“…The cross-sectional area of the diode is approximately 5 cm 2 , thus an electron flux of 1 e/cm 2 /s implies 18,000 >1 MeV electrons per hour impinging on an area the same size as the RaySure diode, very close to the ~20,000 counts per hour accumulated over the low LET channels (where electrons are the dominant contributor [7]). This is, of course, a simplification.…”

Section: Modelsmentioning

confidence: 96%

“…Space weather conditions at the time of the flight were quiescent with no observed enhancement to the galactic cosmic ray (GCR) background flux. The RaD-X payload consisted primarily of a suite of radiation instruments, including the silicon-based RaySure detector [7]. RaySure uses a large-area PIN (p-i-n) diode to count particle interactions using fifteen logarithmicallybinned energy-deposition channels.…”

Section: Measurementsmentioning

confidence: 99%

“…The dynamic range allows for a variety of particle species to be detected in the mixed radiation field of the atmosphere, including direct ionization from protons, ions and the electromagnetic cascade (electrons and gamma), as well as indirect ionization from neutron interactions. These LETdependent data can be used in conjunction with radiation transport models to calculate dose, dose-equivalent and particle fluxes [7]. For single event effects (SEE) the flux vs. altitude profiles of neutrons, protons and heavy ions are of greatest relevance, although modern devices with very small feature sizes may also be vulnerable to SEU induced by electrons and muons [8].…”

Section: Measurementsmentioning

confidence: 99%

“…Count rates measured in the lower energy-deposition channels are predominantly caused by secondary particles, especially electrons [7]. Figure 6 shows how electron flux and RaySure count rate (in channel 2) vary with altitude.…”

Section: Modelsmentioning

confidence: 99%

See 2 more Smart Citations

New Data and Modelling for Single Event Effects in the Stratospheric Radiation Environment

Hands

Lei²,

Ryden

et al. 2017

IEEE Trans. Nucl. Sci.

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Advances in Atmospheric Radiation Measurements and Modeling Needed to Improve Air Safety

Tobiska¹,

Atwell²,

Beck³

et al. 2015

Space Weather

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Air safety is tied to the phenomenon of ionizing radiation from space weather, primarily from galactic cosmic rays but also from solar energetic particles. A global framework for addressing radiation issues in this environment has been constructed, but more must be done at international and national levels. Health consequences from atmospheric radiation exposure are likely to exist. In addition, severe solar radiation events may cause economic consequences in the international aviation community due to exposure limits being reached by some crew members. Impacts from a radiation environment upon avionics from high-energy particles and low-energy, thermalized neutrons are now recognized as an area of active interest. A broad community recognizes that there are a number of mitigation paths that can be taken relative to the human tissue and avionics exposure risks. These include developing active monitoring and measurement programs as well as improving scientific modeling capabilities that can eventually be turned into operations. A number of roadblocks to risk mitigation still exist, such as effective pilot training programs as well as monitoring, measuring, and regulatory measures. An active international effort toward observing the weather of atmospheric radiation must occur to make progress in mitigating radiation exposure risks. Stakeholders in this process include standard-making bodies, scientific organizations, regulatory organizations, air traffic management systems, aircraft owners and operators, pilots and crew, and even the public. Aviation Radiation Is an Unavoidable Space Weather PhenomenonAir safety has improved significantly in many meteorological areas over the past decades with the exception of space weather, which includes ionizing radiation. While a framework for addressing radiation issues has been constructed, we believe that more can and must be done at international and national levels. In particular, measurement programs must be expanded and linked with models to provide current epoch and, eventually, forecast information for the aviation ionizing radiation environment. A diverse radiation measurement and modeling community exists with a strong interest in improving international air safety.There are two challenges in our ever more mobile, technologically dependent global society. First, pilots, crew, and passengers, which include fetuses between their first and second trimesters, might face additional radiation hazards in terms of dose equivalent rate (rate of absorbed dose multiplied by the quality factor), particularly when flying at commercial aviation altitudes above 26,000 ft. (7924.8 m) (8 km) (see Figure 1). Second, avionics can experience single event effects (SEEs) from both the ambient high-energy and thermal neutron environments. The source of this radiation in either case is twofold-from the continuous bombardment by primary background galactic cosmic rays (GCRs) and also from solar energetic particles (SEPs) emitted during occasional solar flare events lasting up to a ...

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A Technique for Measuring Dose Equivalent and Neutron Fluxes in Radiation Environments Using Silicon Diodes

Cited by 20 publications

References 15 publications

CUP–A New High-Flux Irradiation Position at the ANITA Neutron Facility at TSL

CUP–A New High-Flux Irradiation Position at the ANITA Neutron Facility at TSL

New Data and Modelling for Single Event Effects in the Stratospheric Radiation Environment

Advances in Atmospheric Radiation Measurements and Modeling Needed to Improve Air Safety

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