Mixed-Field Radiation Qualification of a COTS Space On-Board Computer along with its CMOS Camera Payload

The radiation qualification of a complex space system made out of multiple commercial electronic components and modules is a non-standardized task with certain limitations, but also wide potentialities. This paper delves into the features of a system-level test methodologies and explains how to use the data retrieved with a mixed-field characterization. Lesson learned concepts can be applied to the the system level irradiation test preparation as well as the actual application

Heavy Ion Nuclear Reaction Impact on SEE Testing: From Standard to Ultra-high Energies

We perform Monte Carlo (MC) simulations to describe heavy ion (HI) nuclear interactions in a broad energy range (4 MeV/n–150 GeV/n), focusing on the single event effect (SEE) sub-linear energy transfer (LET) impact. Previously retrieved single event latch-up (SEL) experimental data have indicated that standard energy ions (~10 MeV/n) can produce high-LET secondaries through fusion reactions which are expected to strongly influence the SEE cross section in the sub-LET region. Alternatively, interactions of higher energy ions (>100 MeV/n) yield secondaries of a similar LET distribution as from the projectile, for projectile-like fragments, and high-energy proton reactions, for target-like fragments. Hence, the factor of relevance to the sub-LET SEE cross section is correlated to low-energy

Gd3+-doped sol-gel silica glass for remote ionizing radiation dosimetry

Gadolinium-doped silica glass was prepared, using the sol-gel route, for ionizing radiation dosimetry applications. Such a glassy rod was drawn to a cane at a temperature of 2000 °C. The structural and optical properties of the obtained material were studied using Raman, optical absorption, and photoluminescence spectroscopies. Thereafter, a small piece of this Gd-doped scintillating cane was spliced to a transport passive optical fiber, allowing the remote monitoring of the X-ray dose rate through a radioluminescence (RL) signal. The sample exhibited a linear RL intensity response versus the dose rate from 125 µGy(SiO2)/s up to 12.25 Gy/s. These results confirm the potentialities of this material for real-time remote ionizing radiation dosimetry.peerReviewe

Single Event Effect Testing With Ultrahigh Energy Heavy Ion Beams

Single event effect (SEE) testing with ultrahigh energy (UHE) heavy ions, such as the beams provided at CERN, presents advantages related to their long ranges with a constant linear energy transfer value. In the present work, the possibility to test components in parallel is being examined, and results from the CERN 2018 UHE Pb test campaigns are studied. Furthermore, the generation of multibit upsets by the UHE Pb ions is evaluated, and the contribution of possible fragments to the SEE measurements is discussed

Temperature Effect on the Radioluminescence of Cu-, Ce-, and CuCe-Doped Silica-Based Fiber Materials

International audienc

Radiation Induced Attenuation and Luminescence study in Radioluminescent Optical Fibres

International audienc

Radiation Induced Attenuation and Luminescence study in Radioluminescent Optical Fibres

International audienc

Temperature Effect on the Radioluminescence of Differently doped Silica-based Optical Fibres

PosterInternational audienceWe evaluate the temperature effect on the X-ray Radiation Induced Luminescence (RIL) of differently doped silica fibres obtained via the sol-gel route. Previous investigations showed that these optical materials exhibit interesting dosimetry properties, such as very good detection capabilities and linear response over a large range of dose rate. However, several radiation environments, such as space and particle accelerators, require also a careful assessment of the temperature effect. With this aim, we characterize their RIL efficiency and spectral dependence at several irradiation temperatures. We demonstrate that all the investigated materials present a non-negligible temperature dependence of the RIL in the range -120 °C to 80 °C. The temperature effect on the RIL signal is still compensable via calibration and temperature monitoring

Temperature Effect on the Radioluminescence of Cu, Ce and CuCe Doped Silica-based Fiber Materials

PosterInternational audienc

Radiation Induced Attenuation and Luminescence study in Radioluminescent Optical Fibres

International audienc