PLATO Focal Plane Assemblies (FPA) Roser Urquí Centro de Astrobiología (CSIC-INTA)

PLATO Kick off meeting November 2010Roser Urqui2  FPA design present status  FPA development planning  Drivers:  High rigidity and mechanical stability  Low mass (32+2 units are needed!)  CCD temperature <-70 C, with passive cooling PLATO Focal Plane Assemblies (FPA)

PLATO Kick off meeting November 2010  A preliminary design has been produced  Design is mainly driven by interface constraints and budgets  Design refinement still on-going CCD (4x) Thermal Strap (4x) Flexi (4x) Support Ring Mask Baseplate Thermal Strap Clamp (4x) FPA design 3Roser Urqui

PLATO Kick off meeting November 2010 FPA design 4Roser Urqui FPA TOU

PLATO Kick off meeting November 2010 FPA design 5Roser Urqui CCDs (detector side, 4x) Thermal Straps (4x) Support Ring Mask

PLATO Kick off meeting November 2010 FPA design 6Roser Urqui Baseplate Thermal Strap Clamps (4x) CCD packages back side (4x)

PLATO Kick off meeting November 2010 FPA design 7Roser Urqui Support Ring Flexies (4x)

PLATO Kick off meeting November 2010  Current design is close to fulfill all requirements –First eigenfrequency 255 Hz (> 300 Hz) Margin still available to increase the frequency. –Mass (including 4xCCDs - 180g each) 1.49 Kg(< 1.6 Kg) If CCDs mass ~ 225 g, ~1.69 Kg –CCD Temperature <-73 ºC(<-70 ºC) –Only NORMAL FPAs considered up to now.  Interfaces –CCD-FPA Interface has already been agreed –FPA-TOU I/F still open Current interface would impose a weird design. Trade off in progress. FPA status 8Roser Urqui

PLATO Kick off meeting November 2010Roser Urqui9 Next steps  Design Refinement until late November –Further Mass reduction –Adapt to updated Requirements and Interfaces  Mock-Up Start of Manufacturing mid December –After CDR/MRR  Mock-Up Delivery mid March  No delays are foreseen