Optimization of Transition Edge Sensor Arrays for Cosmic Microwave Background Observations With the South Pole Telescope
Journal Article
·
· IEEE Transactions on Applied Superconductivity
In this paper, we describe the optimization of transition-edge-sensor (TES) detector arrays for the third-generation camera for the South PoleTelescope. The camera, which contains similar to 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.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Science Foundation (NSF); Gordon and Betty Moore Foundation; Natural Sciences and Engineering Research Council of Canada (NSERC); Canadian Institute for Advanced Research (CIFAR); Canada Research Chairs Program
- DOE Contract Number:
- PLR-1248097; AC02-06CH11357; PHY-1125897; GBMF 947; AST-0956135; AC02-76SF00515
- OSTI ID:
- 1376717
- Journal Information:
- IEEE Transactions on Applied Superconductivity, Vol. 27, Issue 4; ISSN 1051-8223
- Publisher:
- Institute of Electrical and Electronics Engineers (IEEE)
- Country of Publication:
- United States
- Language:
- English
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