EPIC Focal Plane Design and Technology Adrian T. Lee University of - - PowerPoint PPT Presentation

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Apr 23, 2023 149 likes •276 views

EPIC Focal Plane Design and Technology Adrian T. Lee University of California, Berkeley LBNL 2 Messages in talk Cold telescope in space => Extremely high sensitivity focal plane Focal-plane technologies being tested now Multiple

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EPIC Focal Plane Design and Technology

Adrian T. Lee University of California, Berkeley LBNL

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Messages in talk

Cold telescope in space => Extremely high

sensitivity focal plane

Focal-plane technologies being tested now

– Multiple viable options – Detailed trade-offs

SLIDE 4

EPIC-IM Bands and Sensitivities

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EPIC Focal Plane

1.51 m 1.05 m 0.84 m

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EPIC Focal Plane Technologies

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Focal Plane Tradeoffs

Scalar Horns

– Low horn sidelobes – Low-mass design required (horns at higher T)

Phased-Array Antenna

– Low-mass, mechanically simple design

Lens-coupled Antenna

– Reduce focal-plane area by ~ 3x -> reduce design risk

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EPIC Multiplexed Readout Technologies

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Multiplexer Power Dissipation

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Further Sensor/Readout Tradeoffs

System Interactions

– Wiring Requirements

TDM = 5,277 wires, FDM = 694, MKIDs = 11 coax

– Magnetic Shielding – Sensor Temperature Sensitivity

Detector differencing greatly beneficial

– RF sensitivity

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Summary

Much recent progress in focal plan tech.

– TES/MUX currently deployed on ground/balloon

TRL-5 soon

– Monolithic polarization arrays

TRL-5 by mid-decade
Multiple Sensor/Readout Combinations

– Tradeoffs in power and implementation

Multiple Optical Coupling Methods