The physics of the FLUKA code: Recent developments

This study focuses on the ion species and energy dependence of the heavy ion SEE cross section in the sub-LET threshold region through a set of experimental data. In addition, a Monte Carlo based model is introduced and applied, showing a good agreement with the data in the several hundred MeV/n range while evidencing large discrepancies with the measurements in the 10-30 MeV/n interval, notably for the Ne ion. Such discrepancies are carefully analyzed and discussed. Abstract-This study focuses on the ion species and energy dependence of the heavy ion SEE cross section in the sub-LET threshold region through a set of experimental data. In addition, a Monte Carlo based model is introduced and applied, showing a good agreement with the data in the several hundred MeV/n range while evidencing large discrepancies with the measurements in the 10-30 MeV/n interval, notably for the Ne ion. Such discrepancies are carefully analyzed and discussed.

Section: Seu Model Calibration and Benchmarkmentioning

confidence: 99%

“…Simulations are performed using the FLUKA Monte Carlo code [6]- [8] and considering an IRPP-based model. In addition, sub-LET threshold experimental results are also shown for Single Event Burnout (SEB) in a power MOSFET.…”

Section: Introductionmentioning

confidence: 99%

Sub-LET Threshold SEE Cross Section Dependency With Ion Energy

Alía

Bahamonde

Brandenburg

et al. 2015

“…The proton intensity is measured using calibrated Secondary Emission Counters (SECs) and an ionization chamber. The mixed-field generated through the interaction of the primary 24 GeV beam and the target is simulated using the FLUKA Monte Carlo code [15]- [17]. The quantities scored in such simulations include particle fluxes, 1 MeV neutron equivalent fluxes, TID values and particle energy spectra for the different test locations of interest.…”

Section: Hardness Analysis Of Experimental and Operational Enviromentioning

confidence: 99%

SEL Hardness Assurance in a Mixed Radiation Field

Alía

Brügger

Danzeca

et al. 2015

This paper explores the relationship between monoenergetic and mixed-field Single Event Latchup (SEL) cross sections, concluding that for components with a very strong energy dependence and highly-energetic environments, test results from monoenergetic or soft mixed-field spectra can significantly underestimate the operational failure rate. We introduce a semi-empirical approach that can be used to evaluate the SEL rate for such environments based on monoenergetic measurements and information or assumptions on the respective sensitive volume and materials surrounding it. We show that the presence of high-Z materials such as tungsten is particularly important in determining the hadron cross section energy dependence for components with relatively large LET thresholds. Abstract-This paper explores the relationship between monoenergetic and mixed-field Single Event Latchup (SEL) cross sections, concluding that for components with a very strong energy dependence and highly-energetic environments, test results from monoenergetic or soft mixed-field spectra can significantly underestimate the operational failure rate. We introduce a semiempirical approach that can be used to evaluate the SEL rate for such environments based on monoenergetic measurements and information or assumptions on the respective sensitive volume and materials surrounding it. We show that the presence of high-Z materials such as tungsten is particularly important in determining the hadron cross section energy dependence for components with relatively large LET thresholds.

“…FLUKA is a well benchmarked [8]- [11] general purpose tool for calculations of particle transport and interactions with matter, covering an extended range of applications like for example proton and electron accelerator shielding, target design, calorimetry, activation and dosimetry, cosmic ray studies, and radiotherapy. It can simulate with high accuracy the interaction and propagation in matter of about 60 different particles, including photons and electrons from 1 keV to thousands of TeV, neutrinos, muons of any energy, and hadrons of energies up to 20 TeV.…”

Section: The Fluka Monte Carlo Codementioning

confidence: 99%

FLUKA Simulations for SEE Studies of Critical LHC Underground Areas

Røed

Boccone

Brügger

et al. 2011

Abstract-FLUKA Monte Carlo simulations have been performed to identify particle energy spectra and fluences relevant for evaluating the risk of single event effects in electronics installed in critical LHC underground areas. Since these simulations are associated with significant uncertainties, the results will compared with an online monitoring system installed to evaluate radiation levels at the location of the electronics. This comparison approach have been benchmarked in a mixed field reference facility and for a preliminary LHC monitoring case study.