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    LAM

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    Laboratoire d’Astrophysique de Marseille

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    PlatformsSPATIAL platform
    • SPATIAL platform
    • POLARIS Center

    SPATIAL platform

    Our laboratory develops space observation instruments dedicated to research in Astrophysics.

    The LAM SPATIAL platform is dedicated to the Assembly, Integration and Testing of these instruments before they were launched. The description of these means remains very macroscopic but allows to have an overview of the technical capabilities of the platform. The SPATIAL platform provides the means necessary to achieve the AIT activities upon such instruments.

    • Cleanrooms

      The SPATIAL platform is equipped with 1000 m² of clean rooms with all the easements and means of handling necessary for their operation. They are mainly composed by:

      • ISO 8 hall: 400 m²
      • ISO 8 Vibrations room: 25 m²
      • ISO 7 preparation rooms: 25 m² and 30 m²
      • ISO 5 optics integration rooms: 35 m², 35 m² and 40 m²
    • Vibrations testing system

      Qualify the space instruments for launch

      Shock and testing with sinusoidal and random excitations

      The shakerMain technical featuresThe LAM shaker serves to simulate the vibrations undergone by a satellite instrument during its launch phase in space. It is located in an ISO 8 cleanliness room which can be increased to iso 5.

      3 vibrations axes
      33 KN capability
      Cleanliness level environment : ISO8 to ISO5

      Vibrations: controle.
      Air-cooled electrodynamic shaker : LDS V875/440 35 KN
      Slip Low Pressure Table: LPT 600, 600mm x 600 mm
      Cleanliness environment up to ISO 5 level
      Spectral Dynamics SD 2560 with 28 channels
      Power amplifier : LDS SPAK 35/40
      Acquisition & control system : Spectral Dynamics SD 2560 with 28 channels
      Piezo and ICP Accelerometers : ~ 30 ENDEVCO and ~15 B&K types

      Signal conditioning
      B&K 2525 pre-amp stage : 2 dedicated channels for pilot and control
      B&K NEXUS : 16 voies

      PC under Linux ‘jaguar System’
      Printing curves

      Main (sub)systems vibrated : NAC (Rosetta), Spire Mechanism (Herschel), NI-DS (Euclid Nisp)

      The Euclid Nisp NI-DS and NI-GS vibrations campaing

      Euclid is an ESA mission which will be launched in 2024 to understand the nature of the dark matter and energy. The NISP is one of the two Euclid instruments used to map the geometry of the dark Universe. The NI-DS and NI-GS are NISP detection and optical subsystems. All the NI-DS and NI-GS models (including flight one) are vibrated on the LAM vibrations testing system. The picture hereafter shows the vibrations for NI-DS Qualification model and NI-GS flight model.

    • The NAC and COL chambers

      Simulate the flight space conditions

      Global description



      The NAC vacuum chamber is intended for thermal cycling, thermal balance tests or qualifications of instruments or subsystems embedded on satellites. Its useful volume is 2.5 m3. The COL chamber is intended to research on micro optical components. Its useful volume is 0.06 m3.

      The NAC chamber

      The useful volume is 2.5 m3 and its dimensions are :

      • Length = 1000mm
      • Width = 800 mm
      • Height = 405 mm

      Main technical features :

      Building cleanliness level : ISO8

      Vacuum level : <=10-5 mbar

      Environment Temperatures range: from 353 K to 80 K

      This mean can be adapted to specific test request on demand


      Main (sub)systems tested : NAC (Rosetta) ; HRS (Herschel), HFI (Planck), NI-DS (Euclid Nisp) .

      The COL chamber
      The useful volume is 0.6 m3 and its dimensions are :

      • Diameter = 400 mm
      • Height = 400 mm


      This volume consists of an opto-thermal table, a ferrule and its lid. This aluminum assembly is supported by three feet in invar connected to a damped optical bench.

      The COL has sixteen portholes allowing internal and external optical alignments.

      Main technical features :

      Building cleanliness level : ISO8

      Vacuum level : <=10-5 mbar

      Environment Temperatures range: from 330 K to 30 K

    • The PBEM and BE chambers

      Bake out flight space components or subsystems


      Global description

      The PBEM and the BE chambers are intended for the cleaning of satellites components or susbsystems to prevent pollution of the instrument flight optics. The useful respective volumes are 0.1 and 2 m3.

      The PBEM chamber

      The oven useful volume is 0.1 m3 and its dimensions are :

      • Diameter = 0.45 mm
      • Height = 0.65 mm

      Main technical features :


      Building cleanliness level : ISO8

      Vacuum level : <=10-5 mbar

      Environment Temperatures range: from 393 K to ambient temperature

      The parts to be baked out are placed in the oven and can be heated up to 120 ° C under secondary vacuum conditions and for a period of several days continuously.

      Main (sub)systems baked out : NI-TC and mounts of NI-GS (Euclid Nisp) .

      The BE chamber


      The oven useful volume is 2 m3 and its dimensions are :

      • Length = 2000 mm
      • Width = 1000 mm
      • Height = 1000 mm

      The parts to be baked out are placed in the oven and can be heated up to 120 ° C under secondary vacuum conditions and for a period of several days continuously.

      Main technical features :


      Building cleanliness level : ISO8

      Vacuum level : <=10-5 mbar

      Oven Temperatures range: from 393 K to ambient temperature

      Cold trap temperature  : <=120 k

      Main (sub)systems baked out : NI-TC and NI-GS (Euclid Nisp) .

    • The ERIOS chamber

      Test satellites instruments in flight conditions

      Global description

      ERIOS, the main element of the LAM platform “SPATIAL”, is a large thermal-vacuum space simulation chamber for calibration, adjustment and integration for space instruments which combines vacuum, temperature close to 80 K and an optical bench with very high mechanical stability.

      The main technical features

      The useful volume is 50 m3 and the whole chamber overall dimensions are :

      • Diameter = 4000 mm
      • Lenght = 6000 mm

      Main technical features :

      Building cleanliness level : ISO8

      Vacuum level : <=10-5 mbar

      Environment Temperatures range: from 353 K to 80 K

      Optical bench size : 1.5 m * 6 m

      Optical bench mechanical stability : <= 10-7 g

      To ensure stability, and hence accurate measurements, the optical bench is connected to a 100-tone concrete block under the floor resting on pillars via spring boxes.

      Main (sub)systems tested : Nisp STM, Nisp EM and Nisp FM (Euclid Nisp) + associated GSEs

      Euclid Nisp : the first ERIOS TB/TV campaign

      Euclid is an ESA mission which will be launched in 2021 to understand the nature of the dark matter and energy. The NISP is one of the two Euclid instruments used to map the geometry of the dark Universe. All the NISP models (including flight one) are fully integrated at LAM and tested in ERIOS in its flight operating environment. The picture hereafter shows the blank test configuration which is operated to perform the NISP final acceptance tests before delivery to the payload.

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    • Summary
    • Cleanrooms
    • Vibrations testing system
    • The NAC and COL chambers
    • The PBEM and BE chambers
    • The ERIOS chamber

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