Abstract
In this paper, we describe the optimization of transition-edge-sensor (TES) detector arrays for the third-generation camera for the South Pole Telescope. The camera, which contains ~ 16 000 detectors, will make high-angular-resolution maps of the temperature and polarization of the cosmic microwave background. Our key results are scatter in the transition temperature of Ti/Au TESs is reduced by fabricating the TESs on a thin Ti(5 nm)/Au(5 nm) buffer layer and the thermal conductivity of the legs that support our detector islands is dominated by the SiOx dielectric in the microstrip transmission lines that run along the legs.
Original language | English (US) |
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Article number | 7784774 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 27 |
Issue number | 4 |
DOIs | |
State | Published - Jun 2017 |
Keywords
- South Pole telescope
- Transition edge sensors
- bolometers
- cosmic microwave background
- superconducting detectors
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering