PLATO Focal Plane Assemblies (FPA) Roser Urquí Centro de Astrobiología (CSIC-INTA)
Jan 05, 2016
PLATO Focal Plane Assemblies (FPA)
Roser Urquí
Centro de Astrobiología (CSIC-INTA)
PLATO Kick off meeting November 2010 Roser Urqui 2
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 StrapClamp (4x)
FPA design
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PLATO Kick off meeting November 2010
FPA design
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FPA
TOU
PLATO Kick off meeting November 2010
FPA design
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CCDs (detector side, 4x)
Thermal Straps (4x)
Support Ring
Mask
PLATO Kick off meeting November 2010
FPA design
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Baseplate
Thermal StrapClamps (4x)
CCD packages back side (4x)
PLATO Kick off meeting November 2010
FPA design
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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 2010 Roser Urqui 9
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