Multi-chroic dual-polarization bolometric detectors for studies of the Cosmic Microwave Background
| Autor: | Jennifer Edwards, Aaron Lee, Darin Rosen, Paul L. Richards, X. Meng, G. Engargiola, Aritoki Suzuki, Brian Keating, Kam Arnold, M. J. Myers, W. L. Holzapfel, Praween Siritanasak, Gabriel M. Rebeiz, Roger O'Brient, E. Quealy |
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| Přispěvatelé: | Holland, Wayne S., Zmuidzinas, Jonas |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Linear polarization business.industry Frequency band Physics::Instrumentation and Detectors Bolometer Cosmic microwave background Detector Polarimetry Astrophysics::Instrumentation and Methods for Astrophysics FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Condensed Matter Physics Atomic and Molecular Physics and Optics law.invention Optics law Extremely high frequency Broadband Optoelectronics General Materials Science Transition edge sensor business Astrophysics - Instrumentation and Methods for Astrophysics Instrumentation and Methods for Astrophysics (astro-ph.IM) |
| Zdroj: | Scopus-Elsevier |
| Popis: | We are developing multi-chroic antenna-coupled TES detectors for CMB polarimetry. Multi-chroic detectors increase the mapping speed per focal plane area and provide greater discrimination of polarized galactic foregrounds with no increase in weight or cryogenic cost. In each pixel, a silicon lens-coupled dual polarized sinuous antenna collects light over a two-octave frequency band. The antenna couples the broadband millimeter wave signal into microstrip transmission lines, and on-chip filter banks split the broadband signal into several frequency bands. Separate TES bolometers detect the power in each frequency band and linear polarization. We will describe the design and performance of these devices and present optical data taken with prototype pixels. Our measurements show beams with percent level ellipticity, percent level cross-polarization leakage, and partitioned bands using banks of 2, 3, and 7 filters. We will also describe the development of broadband anti-reflection coatings for the high dielectric constant lens. The broadband anti-reflection coating has approximately 100 percent bandwidth and no detectable loss at cryogenic temperature. Finally, we will describe an upgrade for the POLARBEAR CMB experiment and installation for the LITEBird CMB satellite experiment both of which have focal planes with kilo-pixel of these detectors to achieve unprecedented mapping speed. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of SPIE Volume 8452. 2012 |
| Databáze: | OpenAIRE |
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