CREME96: A Revision of the Cosmic Ray Effects on Micro-Electronics Code

Tylka, A. J.; Adams, J. H.; Boberg, P. R.; Brownstein, B.; Dietrich, William F.; Fluêckiger, E. O.; Petersen, E.L.; Shea, M. A.; Smart, D. F.; Smith, Edward C.

doi:10.1109/23.659030

Cited by 551 publications

(272 citation statements)

References 58 publications

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“…[16]. For the geomagnetic transmission function, C Geo , we use the CREME96 [43] precalculated GTF for the International Space Station orbit in quiet geomagnetic weather conditions, as shown in Fig. 6, as a function of particle rigidity.…”

Section: Ams-02mentioning

confidence: 99%

Antideuteron limits on decaying dark matter with a tuned formation model

Dal

Raklev

2014

Phys. Rev. D

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We investigate the production of antideuterons from decaying dark matter, using gravitinos in supersymmetric models with trilinear R-parity violating (RPV) operators as an example. The model used for antideuteron formation is shown to induce large uncertainties in the predicted flux, comparable to uncertainties from cosmic-ray propagation models. We improve on the formation model by tuning hadronization and coalescence parameters in Monte Carlo simulations to better reproduce the hadron spectra relevant for antideuteron production. In light of current bounds on fluxes and future prospects from the AMS-02 and GAPS experiments we set limits on RPV couplings as a function of the gravitino mass.

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Section: Ams-02mentioning

confidence: 99%

Antideuteron limits on decaying dark matter with a tuned formation model

Dal

Raklev

2014

Phys. Rev. D

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“…-For the WFI a 2.3 protons cm −2 s −1 flux has been assumed, which is roughly half the flux reported by CREME96 for the L2 orbit for the solar minimum (Marcus et al 2012;Tylka et al 1997;Weller et al 2010), which is the level we assumed in our work as a conservative value representative of the worst case. In addition, the WFI is better protected than X-IFU by a graded-Z shielding.…”

Section: Considerations On the Comparison With Other Instrumentsmentioning

confidence: 99%

In-orbit background of X-ray microcalorimeters and its effects on observations

Lotti

Cea

Macculi

et al. 2014

A&A

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Context. Observations in the X-ray energy band are often limited by the background because of the low fluxes of typical sources. The background can easily be higher than the signal itself, and thus any mission with the scientific goal of observing faint and/or extended sources in the X-ray band must deal with the background problem. ESA has recently selected "the hot and energetic universe" as science theme for the second large-class mission in the Cosmic Vision science program, to be pursued with an advanced X-ray observatory to be launched in 2028, and at present ATHENA is the proposal that is most likely to be selected for this slot. The mission is aimed to place an X-ray telescope in the L2 orbit equipped with an X-ray Integral Field Unit (X-IFU) based on high spectral resolution transition-edge microcalorimeters, and has among its goals the detection and characterization of high-redshift active galactic nuclei (AGNs), cluster of galaxies and their outskirts, which is why great care must be taken to reduce the background impact on the detection/characterization of these sources. Aims. The background is composed of a diffuse component and an internal particle component for any satellite operating in the X-ray band. We take as reference the X-ray IFU instrument that will be placed onboard the ATHENA mission to analyze both these components and their variability for different orbits, observational conditions and/or design choices. We also show how different background levels affect the instrumental performance, and the scientific results obtainable with the instrument in the best configuration. The X-IFU is a cryogenic X-ray spectrometer, based on a large array of 3840 transition-edge sensors (TES) of 250 μm side, with a spectral energy resolution of 2.5 eV in the 0.2−10 keV energy band, over a field of view of 5 × 5 arcmin 2 , high count rate capability and a 5 arcsec angular resolution. Methods. There are no experimental data about the background experienced by microcalorimeters in the L2 orbit, and thus the particle background levels were calculated by means of Monte Carlo simulations: we considered the original design configuration and an improved configuration aimed to reduce the unrejected background, and tested them in the L2 orbit and in the low Earth orbit, comparing the results with experimental data reported by other X-ray instruments. For the diffuse component, we used the background levels measured from a 1 sr region representative of typical high galactic latitude pointings and analyzed the variations expected with the different orbital conditions. To show the results obtainable with the improved configuration we simulated the observation of a faint, high-redshift, point source (F [0.5−10 keV] ∼ 6.4 × 10 −16 erg cm −2 s −1 , z = 3.7), and of a hot galaxy cluster at R 200 (S b [0.5−2 keV] = 8.61 × 10 −16 erg cm −2 s −1 arcmin −2 , T = 6.6 keV). Results. First we confirm that implementing an active cryogenic anticoincidence reduces the particle background by an order of magnitude and brings ...

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“…Figure 5 shows the Integral Linear Energy Transfer (LET) spectra of the SS-MEOs calculated with CREME96 5,6) model. In this calculation, the "solar minimum phase" and the "stormy" geomagnetic conditions were applied as the worst case calculation.…”

Section: Radiation Environment In Ss-meomentioning

confidence: 99%

A Study on Medium Earth Orbit Utilization

Tsuiki¹,

Utashima²,

Kobayashi³

et al. 2014

AEROSPACE TECHNOLOGY JAPAN

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The Medium Earth Orbit (MEO) offers a greater width of satellite view than the Low Earth Orbit, and a greater proximity to the Earth's surface than the Geostationary Earth Orbit. Global positioning systems and ionospheric sounding satellites have already operated in this orbit, and the MEO will appeal to satellite missions undertaking Earth observations, communications, positioning, and scientific explorations. The Sun-Synchronous Medium Earth Orbits (SS-MEOs) used in this study enable clear and daily observations of the Earth's surface. However, problems such as severe radiation from the Van Allen radiation belt, and the inefficiency to launch a satellite in a southwest direction, need to be resolved. This paper presents the results of early studies on SS-MEO utilization: orbital characteristics and environments, candidates for Earth observation missions, and the feasibility of the development and launch of a satellite for operation within this orbit.

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CREME96: A Revision of the Cosmic Ray Effects on Micro-Electronics Code

Cited by 551 publications

References 58 publications

Antideuteron limits on decaying dark matter with a tuned formation model

Antideuteron limits on decaying dark matter with a tuned formation model

In-orbit background of X-ray microcalorimeters and its effects on observations

A Study on Medium Earth Orbit Utilization

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