Search results for "Geocentric orbit"

showing 3 items of 3 documents

Risk Assessment of Electron Induced SEE during the JUICE Mission

2018

The SEE sensitivity of electronic devices to high energy electrons has been put in evidence experimentally. Several ground experiments have shown that electron induced SEE could occur in recent technologies. In the case of the JUICE mission, the expected electron environment is harsher than for Earth orbits. The impact of such electron fluxes on the embedded electronics was assessed in this work. The study focused on SRAM memories SEU sensitivity. Three different device references were tested under electrons, as well as under protons and heavy ions. The electron and the low energy proton direct ionization contributions to the total SEU rate have been studied in more detail.

010302 applied physicsPhysicsWork (thermodynamics)High energyProton010308 nuclear & particles physicsElectron01 natural sciencesIonNuclear physicsIonization0103 physical sciencesElectronicsGeocentric orbit2018 18th European Conference on Radiation and Its Effects on Components and Systems (RADECS)
researchProduct

GrailQuest: hunting for atoms of space and time hidden in the wrinkle of Space-Time: A swarm of nano/micro/small-satellites to probe the ultimate str…

2021

AbstractGrailQuest(Gamma Ray Astronomy International Laboratory for QUantum Exploration of Space-Time) is a mission concept based on a constellation (hundreds/thousands) of nano/micro/small-satellites in low (or near) Earth orbits. Each satellite hosts a non-collimated array of scintillator crystals coupled with Silicon Drift Detectors with broad energy band coverage (keV-MeV range) and excellent temporal resolution (≤ 100 nanoseconds) each with effective area$\sim 100 \text {cm}^{2}$∼100cm2. This simple and robust design allows for mass-production of the satellites of the fleet. This revolutionary approach implies a huge reduction of costs, flexibility in the segmented launching strategy, …

PhysicsGamma-Ray Burstsγ-ray sourceAll-sky monitor; Constellation of satellites; Gamma-Ray Bursts; Quantum gravity; γ-ray sourcesPhotonbusiness.industryGravitational waveHigh-energy astronomyAstrophysics::High Energy Astrophysical PhenomenaConstellation of satellitesQuantum gravityAstronomy and AstrophysicsGamma-ray astronomyGamma-Ray Burstγ-ray sourcesOpticsConstellation of satelliteAll-sky monitorSpace and Planetary ScienceObservatoryTemporal resolutionSatellitebusinessGeocentric orbit
researchProduct

Background in low Earth orbits measured by LEGRI telescope – short and long term variability

1999

Abstract In this paper we present the first Low Energy Gamma Ray Imager (LEGRI) background measurements which were carried out in the earlier nominal operation activities of LEGRI Instrument on board MINISAT-01, after initial spacecraft and instrument check-up procedures. Short term (daily) and expected long term background variability is presented. A background model is also discussed in order to be used for celestial γ-ray emitters observations.

PhysicsNuclear and High Energy PhysicsSpacecraftbusiness.industryGamma rayAstronomyCosmic rayX-ray telescopeAstrophysicslaw.inventionTerm (time)TelescopelawbusinessInstrumentationGeocentric orbitBackground radiationNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
researchProduct