English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We have developed antenna-coupled transition-edge sensor (TES) bolometers fora wide range of cosmic microwave background (CMB) polarimetry experiments,including BICEP2, Keck Array, and the balloon borne SPIDER. These detectorshave reached maturity and this paper reports on their design principles,overall performance, and key challenges associated with design and production.Our detector arrays repeatedly produce spectral bands with 20%-30% bandwidth at95, 150, or 220~GHz. The integrated antenna arrays synthesize symmetricco-aligned beams with controlled side-lobe levels. Cross-polarized response onboresight is typically ~0.5%, consistent with cross-talk in our multiplexedreadout system. End-to-end optical efficiencies in our cameras are routinely35% or higher, with per detector sensitivities of NET~300 uKrts. Thanks to thescalability of this design, we have deployed 2560 detectors as 1280 matchedpairs in Keck Array with a combined instantaneous sensitivity of ~9 uKrts, asmeasured directly from CMB maps in the 2013 season. Similar arrays haverecently flown in the SPIDER instrument, and development of this technology isongoing.

Antenna-coupled TES bolometers used in BICEP2, Keck array, and SPIDER