Transcript The Energetic Particle Telescope (EPT)

The Energetic Particle Telescope
(EPT)
Configurations for Characterizations of the Space Radiation Environment
M. Cyamukungu, Gh. Grégoire, S. Benck, J. Cabrera, L. Soung Yee, P. Leleux and J. Lemaire (CSR)
C. Lippens, D. Heynderickx, V. Pierrard and E. Van Ransbeeck (BISA)
E. Valtonen and J. Peltonen (ASRO)
S. Duzellier, R. Ecoffet (ONERA/CNES)
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Contents:
1.
Basic principle of the EPT
2.
Particle channels & Detection efficiencies
3.
The EPT configurations
4.
The EPT Development status
5.
The EPT and SPENVIS
6.
Flight opportunity
7.
The EPT development team
8.
Conclusions
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1. Basic principles of the EPT
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2. Detection efficiency (ctd)
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Electrons
e1
e24
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2. Detection efficiency (ctd)
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Protons
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e33
e48 e48
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2. Detection efficiency (ctd)
a - particles
ee49
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e53
e57
e72
e72
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3. The EPT configurations
3.1. Low flux particle detector
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3.1.1. Low flux particle detector: large F.O.V. angle for flux…
…measurements on board non-spinning satellites
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3.1.2. Low flux particle detector: reduced F.O.V. angle for flux…
…measurement on board spinning satellites
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3.2. High flux particle detector
3.2.1. High flux particle detector: variable aperture / F.O.V. angle
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4. The EPT and SPENVIS
Users requirements
SPENVIS
Already fulfilled requirements
Not yet fulfilled requirements
EPT configurations
Data analysis and modelling activities
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5. The EPT development status
The (high flux) EPT prototype is being finalized and will be
tested in november 2005.
This test will be followed by that of silicon sensors ( and
half EPT) in january 2006.
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6. Flight opportunity
The EPT schedule is drawn to fit into the development
plan of the Environmental Explorer mission (NRL project)

The consortium is also interested in acquiring data on
board Alphasat

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7. The EPT development team
The EPT development was initiated in 1997 by Prof. Gh. Grégoire and Dr. M.
Cyamukungu. The development of the DAM’s was supported by the Nuclear Physics
Institute and the hardware for the prototype under construction was funded by
the Belgian Institute for Space Aeronomy.
The construction of an Engineering Qualification Model is undertaken by an
international team including skills from:
CSR
Belgium
BISA
Belgium
Aboa Space Research Oy
Finland
ONERA/CNES
France
With collaboration from NRL (USA) and Aerospace Corporation (USA)
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Conclusions
The Energetic Particle Telescope (EPT) can be configured to
measure particle fluxes in several radiation environment conditions.
Its main features are:
 outstanding particle discrimination capability
 high data acquisition rates due to digital operation mode
 almost no background counting
 extended energy range covered by a single instrument
 digital reliability and built-in redundancy
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