Science Detectors at Sofradir and ASTEROID Program Overview

Présentation PowerPointBruno FIEQUE (Project Coordinator)
5/11/2018 Bruno FIEQUE - COMPANY PROPRIETARY
Sofradir general presentation
Sofradir in Space
ASTEROID program
A merchant market positioning
50% Thales
5/11/2018 Bruno FIEQUE - COMPANY PROPRIETARY 3
Sofradir and subsidiaries
Turnover 2017 : €227M
area for infrared and optronics
Sofradir offers all services for space
applications Studies (preliminary evaluation of technologies, development of new building blocks, development of new products)
Customized detectors for programs launched by space agencies
COTS products used “as it is” or with minor customization
Meteorology
Asteroids studies
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A unique position in Europe: we are the only space-qualified IR detector European
company to have delivered scores of flight models : 70 Flight Models already delivered over the past decade
Sofradir is the European leader
for FM deliveries
Sentinel-2 : 12 new Sofradir detectors in space since June 2015
Exomars: + 3FM in 2016
Tropomi: + 1FM in 2017
SGLI: + 2FM (dec 17)
We foresee ~20-25 FM launched in space in the next 3-5 years
Helios 2A
More than 70 Flight Models
delivered
spacecrafts
Full detector manufacturing
Bruno FIEQUE - COMPANY PROPRIETARY 9
The objective of the studies is to answer European Space Agency (ESA) needs for their Cosmic Vision program (2015-2025) including science and astronomy applications
What ESA needs : NIR/SWIR Large Format Arrays (LFA)
Products made by an European manufacturer
Components capable of working in low fluxes environments (i.e low noise and low consumption capability)
ESA studies launched for 8 years to develop science detector at Sofradir, CEA LETI, CEA IRFU
Context of the studies
Building blocks
ROIC : SFD input Stage LPE (MBE) epitaxy - p/n
technology
Low consumption
High QE
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250 0
QE~75%
(*) Crouzet P.-E., Proc. SPIE 9639, 96390X (2015) RON : 11.4 e- to 11.5 e-
Crosstalk ~ 1%
Parameter Value
Operating temperature 100K
Linear well capacity 60ke-
Non-Linearity 3.2% and 2.5%
Cross-talk 0.6% to 1.1%
Readout speed 100kHz
2 projects - 2 complementary goals – 1 common Strategy
ALFA :
ESA funding
European Commission funding
ESA Program
applications
Schedule
Astronomy Large Focal Array
ALFA ROIC architecture
Stitching to access large ROIC size
30x30mm²
Science mode for low noise & flux operation
1, 4, 32 outputs
Hard Rad
Operating modes main characteristics
Lower than 1mW in 1 output
ALFA ROIC : Simulation results (1/2)
ROIC power consumption in Fast mode
ROIC power consumption in Science mode
Linearity of analog chain in Science mode
Lower than 1% over the electrical dynamic
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Performances summary
Size 2048 x 2048 2048 x 2048
Pitch 15 x 15 µm² 15 x 15 µm²
Output number 32 1, 4, 32
Linear well charge handling capacity (CHC) ≤ 60 ke- 135 ke-
Non-Linearity ≤ 3% < 3%
Cross-talk ≤ 3% < 3%
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Thanks to French actors cooperation, ALFA will be integrated for a first Astronomy
application: CAGIRE camera for COLIBRI
COLIBRI : ground IR telescope for SVOM mission
SVOM / COLIBRI: First ALFA detector user
Actors: CEA: Characterization of the sensor – Expert Scientist on the camera.
CPPM: Integration of the sensor with the NGC card developed by ESO – Controller settings and detailed
characterization of the sensor with its controller.
IRAP: Project Management – Development of the cryostat and Control/Command – Integration of the
sensor in the cryostat – Detailed characterization of the camera – Integration of the camera at OAN/SPM
in Mexico.
LAM: PI of COLIBRI – System Engineering – Integration of the camera at OAN/SPM in Mexico.
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Sino-French SVOM : Chinese National Space Agency (CNSA) and the French Space Agency (CNES) (Space-based multi-band astronomical Variable Objects Monitor) mission for understanding of the GRB (Gamma-Ray Bursts) phenomenon
GRB use to understand the infancy of the Universe.
Best compromise between space and ground instrumentation Onboard instruments : detection of the GRBs, their
localization, the study of the prompt emission and the early detection and follow-up of visible afterglows.
The ground segment : fast distribution of the alerts, the localization of GRBs
SVOM / COLIBRI: First ALFA detector user
http://www.svom.fr
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validation status
Analog chain output range (for all modes of operation)
Power consumption (for all modes of operation)
IPC mode
SCI global 1 0
SCI global 4 0
SCI global 32 0
FAST global 32 1
WIN NA 1 0
WIN NA 4 0
WIN NA 32 0
IPC NA 1 0
Analog chain transfert function
ROIC mode of operation
demonstrates no interconnect issues
update ROIC datasheet
very large ROIC : >2000x2000 15µm pitch
ALFA ROIC validation status
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5/11/2018
Asteroid program
ASTronomy EuROpean Infrared Detector
2 research organisations (CEA and IFAE)
Main goal : to develop the technology that will make Europe non-dependent for large IR detectors compatible with large volume production
ADDL
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Partner Country Main scientific and technical contribution
SOFRADIR
FRANCE global program management as leader of the consortium.
MCT wafers manufacturing in order to ensure technology transfer at industrial level.
hybridization of the test vehicle
expected packaging able to receive the 2k² IRFPA for testing.
CEA
FRANCE CEA (LETI Institute) is in charge of the development of scaled up MCT wafers
CEA (IRFU Institute) is in charge of the characterization of the SWIR p/n technology
as expert in testing high performances IR detectors
EVG
AUSTRIA EVG is in charge of process adaptation for scaling up the ROIC manufacturing line
at SOFRADIR.
IFAE
SPAIN IFAE is in charge of the testing of 2k² hybridized FPA
ADDL FRANCE ADLL will be in charge of the FE thermomechanical modeling of the 2k² hybridized
structure itself.
ASTEROID Technology Development
development
Hybridization
development
development
Phase Epitaxy process
diode processing
development
hybridized FPA
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This first part of the program was mainly oriented on the tooling development for manufacturing and testing.
After one year of progress, Asteroid program has already demonstrated results : CdZnTe ingot growth and post processing.
The first ingots with very large size has been done and characterized.
With the substrates extracted from these ingots, epitaxy wafer with 4’’ have also been manufactured at CEA LETI
ASTEROID Progress
EVG has worked on new Silicon wafer post processes and results are promising for large 8’’ ROIC wafer sizes. The collaboration with Sofradir will help to upgrade the ROIC industrial line taking into account the large wafer size challenge.
ADDL is developing dedicated modeling software in order to assess the thermomechanical constraints on the 2K² detector at cold temperature. This evaluation and complex calculations will allow to potentially adapting the hybridization process, post- process, tooling and packaging.
ASTEROID Progress
MCT (HgCdTe)
ROIC (Silicon)
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IFAE laboratory and CEA-IRFU have worked on the test plan and mean preparation for next year (2019) tests and characterization.
Sofradir and CEA-LETI have worked on the CdZnTe wafer and 4’’ epitaxy process preparation and Sofradir has also worked on hybridization process adaptation for such large detector.
ALFA ROIC wafers have been procured in early September 2018 and first hybridization will be done by the end of the year.
ASTEROID Progress
First hybridized mock-up 2048x2048
Acknowledgements
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Science Detectors at Sofradir and ASTEROID Program Overview

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