Transcript C09_pres

Electrical and Thermal Characterization of Membrane-Isolated,
Antenna-Coupled, TES Bolometers for the SPIDER Experiment
Joseph Bonetti, Peter Day, Matthew Kenyon, Anthony Turner, Rick LeDuc,
Chao-Lin Kuo, and James Bock
Jet Propulsion Laboratory, Caltech
• SPIDER is a balloon-based observatory to search for the signature of gravity
wave in the polarization of the CMB
• We’ve designed, fabricated and measured the DC and thermal properties of the
TES detectors to be used for SPIDER…we’re within the specs of the project
• Unique “dual-TES” design has Al and Ti thermistors in series. Al transition used
for lab optical tests. Ti transition will be used when experiment deployed.
We measured:
• Transition sharpness,  = (T/R)(dR/dT) via Johnson noise
• Thermal conductance between isolated TES and substrate
• Noise equivalent power from 1mHz to 1 kHz
• Natural and Operational time constants by sending in pulses with a red LED.
Ti Transition
NEP
Thermal Conductance
Time response