Fast Probabilistic Particle Identification algorithm using silicon strip detectors

Fino, L. Di; Zaconte, V.; Ciccotelli, A.; Larosa, Marianna; Narici, L.

doi:10.1016/j.asr.2012.04.015

Cited by 10 publications

(7 citation statements)

References 13 publications

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“…The ALTEA cosmic ray detector (Di Fino et al, , , ; Narici et al, , ; Zaconte, Casolino, Di Fino, et al, ; Zaconte, Casolino, de Santis, et al, ) acquired data onboard the ISS from 2006 to 2012 for a total of about 3.5 years. It is composed of six Silicon Detector Units (SDUs) arranged in three telescopes.…”

Section: Methodsmentioning

confidence: 99%

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Comparisons of High‐Linear Energy Transfer Spectra on the ISS and in Deep Space

et al. 2019

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In deep space, personnel and equipment are exposed to the space radiation environment in the form of energetic particles, specifically galactic cosmic rays and sporadic solar energetic particle events. Radiation fields resulting from these particles are modified by shielding, but most radiation measurements in deep space have been made with detectors that were unshielded or very lightly shielded. In contrast, the space radiation environment on the International Space Station (ISS) is more complicated, with time-dependent modification of the incident flux by the geomagnetic field and complex bulk shielding distributions; measured particle spectra inside the ISS are affected by both types of shielding. The geomagnetic field is also responsible for the existence of the South Atlantic Anomaly, a region of trapped energetic protons and electrons, and hence enhanced radiation dose, through which the ISS travels several times per day on average. Here our primary aim is to compare charged-particle spectra at high linear energy transfer obtained by the Anomalous Long-Term Effects in Astronauts instrument on ISS during high-latitude portions of the orbit to data acquired at the same time by the Cosmic Ray Telescope for the Effects of Radiation and Radiation Assessment Detector instruments, both in deep space. The hypothesis being tested is that these spectra are the same, modulo shielding differences, since the effects of the geomagnetic field are expected to be minimal at high latitudes.Plain Language Summary Exposure to highly energetic particle radiation in space is a concern for current and future human missions. To date, only the Apollo astronauts have ventured outside the protective effects of the Earth's magnetic field, but astronauts on future missions back to the Moon, or to Mars or other destinations in deep space, will not have this protection. In the high-latitude parts of the orbit of the International Space Station, the magnetic shielding is weak, and in principle we expect the radiation environment there to be very similar to that in deep space. Here we present the first direct test of this hypothesis, using data obtained by three different particle detectors, one aboard the ISS, one in lunar orbit, and one that was in interplanetary space between Earth and Mars for part of the time period being studied, and on the surface of Mars for the rest of the period of interest.

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Section: Methodsmentioning

confidence: 99%

“…The LET range of the detector goes from a threshold of about 2.5 keV/μm up to about 800 keV/μm. In some cases, the charge of each impinging particle can be estimated, as shown by Di Fino et al ().…”

Section: Methodsmentioning

confidence: 99%

Comparisons of High‐Linear Energy Transfer Spectra on the ISS and in Deep Space

et al. 2019

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“…Data transfer from ISS to ground is in real time and is described in Di Fino et al 2006. Under certain conditions it is possible to estimate the charge of each impinging particle (Di Fino et al 2012). During the investigation National Aeronautics and Space Administration (NASA) provided a set of orbital ancillary data that permitted to select measurements in different geomagnetic zones (Zaconte et al 2008(Zaconte et al , 2010a(Zaconte et al , 2010b The raw data underwent first a subtraction of the pedestal (offset with no input, measured from non-hit silicon chip stripes) in order to calibrate the baseline of each silicon chip.…”

Section: Alteamentioning

confidence: 99%

Exploiting different active silicon detectors in the International Space Station: ALTEA and DOSTEL galactic cosmic radiation (GCR) measurements

Narici¹,

Berger²,

Burmeister³

et al. 2017

J. Space Weather Space Clim.

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The solar system exploration by humans requires to successfully deal with the radiation exposition issue. The scientific aspect of this issue is twofold: knowing the radiation environment the astronauts are going to face and linking radiation exposure to health risks. Here we focus on the first issue. It is generally agreed that the final tool to describe the radiation environment in a space habitat will be a model featuring the needed amount of details to perform a meaningful risk assessment. The model should also take into account the shield changes due to the movement of materials inside the habitat, which in turn produce changes in the radiation environment. This model will have to undergo a final validation with a radiation field of similar complexity. The International Space Station (ISS) is a space habitat that features a radiation environment inside which is similar to what will be found in habitats in deep space, if we use measurements acquired only during high latitude passages (where the effects of the Earth magnetic field are reduced). Active detectors, providing time information, that can easily select data from different orbital sections, are the ones best fulfilling the requirements for these kinds of measurements. The exploitation of the radiation measurements performed in the ISS by all the available instruments is therefore mandatory to provide the largest possible database to the scientific community, to be merged with detailed Computer Aided Design (CAD) models, in the quest for a full model validation. While some efforts in comparing results from multiple active detectors have been attempted, a thorough study of a procedure to merge data in a single data matrix in order to provide the best validation set for radiation environment models has never been attempted. The aim of this paper is to provide such a procedure, to apply it to two of the most performing active detector systems in the ISS: the Anomalous Long Term Effects in Astronauts (ALTEA) instrument and the DOSimetry TELescope (DOSTEL) detectors, applied in the frame of the DOSIS and DOSIS 3D project onboard the ISS and to present combined results exploiting the features of each of the two apparatuses.

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“…ALTEA-space particle detection on board the ISS The ALTEA-space particle detection system, called SDS (Silicon Detector System), includes six identical particle telescopes (SDU, Silicon Detector Units) arranged on an adaptable mounting system (Narici 2008;Di Fino et al 2012). Each SDU is able to determine the energy loss and the trajectory of the penetrating cosmic rays.…”

Section: The May 17 2012 M51-class Solar Flarementioning

confidence: 99%

The relativistic solar particle event of May 17th, 2012 observed on board the International Space Station

Berrilli

Casolino

Moro

et al. 2014

J. Space Weather Space Clim.

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High-energy charged particles represent a severe radiation risk for astronauts and spacecrafts and could damage ground critical infrastructures related to space services. Different natural sources are the origin of these particles, among them galactic cosmic rays, solar energetic particles and particles trapped in radiation belts. Solar particle events (SPE) consist in the emission of high-energy protons, alpha-particles, electrons and heavier particles from solar flares or shocks driven by solar plasma propagating through the corona and interplanetary space. Ground-level enhancements (GLE) are rare solar events in which particles are accelerated to near relativistic energies and affect space and ground-based infrastructures. During the current solar cycle 24 a single GLE event was recorded on May 17th, 2012 associated with an M5.1-class solar flare. The investigation of such a special class of solar events permits us to measure conditions in space critical to both scientific and operational research. This event, classified as GLE71, was detected on board the International Space Station (ISS) by the active particle detectors of the ALTEA (Anomalous Long Term Effects in Astronauts) experiment. The collected data permit us to study the radiation environment inside the ISS. In this work we present the first results of the analysis of data acquired by ALTEA detectors during GLE71 associated with an M5.1-class solar flare. We estimate the energy loss spectrum of the solar particles and evaluate the contribution to the total exposure of ISS astronauts to solar high-energy charged particles.

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Fast Probabilistic Particle Identification algorithm using silicon strip detectors

Cited by 10 publications

References 13 publications

Comparisons of High‐Linear Energy Transfer Spectra on the ISS and in Deep Space

Comparisons of High‐Linear Energy Transfer Spectra on the ISS and in Deep Space

Exploiting different active silicon detectors in the International Space Station: ALTEA and DOSTEL galactic cosmic radiation (GCR) measurements

The relativistic solar particle event of May 17th, 2012 observed on board the International Space Station

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