Antenna-coupled TES bolometers for CMB polarimetry

Kuo, C. L.; Bock, J. J.; Chattopadthyay, G.; Goldin, Alexey; Golwala, S. R.; Holmes, W. A.; Irwin, K. D.; Kenyon, M.; Lange, A. E.; Leduc, H. G.; Rossinot, P.; Vayonakis, Anastasios; Wang, G.; Yun, Minhee; Žmuidzinas, J.

doi:10.1117/12.672737

Cited by 8 publications

(13 citation statements)

References 23 publications

(24 reference statements)

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“…It was completed in 2012 [53] and modified in 2013-2014 [49]. The Keck array is made of five polarimeters, each with a design similar to that of BICEP2 but with a pulse tube refrigerator instead of the He 4 Dewar.…”

Section: Bicepand Related Experimentsmentioning

confidence: 99%

“…From a technological point of view, BICEP2 has been the first experiment to use the antennacoupled TES arrays [47][48][49][50] fabricated at the Jet Propulsion Laboratory (JPL) [51]. The TES technology, based on the strong temperature dependence of resistance in the phase transition of a superconductor (Ti and Al in the BICEP2 sensors), allows in particular for a more dense setup with arrays incorporating a much larger number of pixels than in the case of spider-web bolometers.…”

Section: Bicepand Related Experimentsmentioning

confidence: 99%

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BICEP2, Planck, spinorial space-time, pre-Big Bang.

Gonzalez‐Mestres

2015

EPJ Web of Conferences

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Abstract. The field of Cosmology is currently undergoing a positive and constructive crisis. Controversies concerning inflation are not really new. But after the 2013-2014 Planck and BICEP2 announcements, and the more recent joint analysis by Planck, BICEP2 and the Keck Array (PBKA), the basic issues can involve more direct links between the Mathematical Physics aspects of cosmological patterns and the interpretation of experimental results. Open questions and new ideas on the foundations of Cosmology can emerge, while future experimental and observational programs look very promising. The BICEP2 result reporting an excess of B-mode polarization signal of the cosmic microwave background (CMB) radiation was initially presented as a signature of primordial gravitational waves from cosmic inflation. But polarized dust emission can be at the origin of such a signal, and the evidence claimed by BICEP2 is no longer secure after the PBKA analysis. Furthermore, even assuming that significant CMB B-mode polarization has indeed been generated by the early Universe, its theoretical and cosmological interpretation would be far from obvious. Inflationary gravitational waves are not the only possible source of primordial CMB B-modes. Alternative cosmologies such as pre-Big Bang patterns and the spinorial space-time (SST) we introduced in 1996-97 can naturally produce this polarization. Furthermore, the SST automatically generates for each comoving observer a local privileged space direction (PSD) whose existence may have been confirmed by Planck data. If such a PSD exists, vector perturbations have most likely been strong in the early Universe and may have produced CMB B-modes. Pre-Big Bang cosmologies can also generate gravitational waves in the early Universe without inflation. After briefly describing detectors devoted to the study of the CMB polarization, we discuss the situation emerging from BICEP2 results, Planck results and the PBKA analysis. In particular, we further analyze possible alternatives to the inflationary interpretation of a primordial B-mode polarization of cosmic microwave background radiation.

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Section: Bicepand Related Experimentsmentioning

confidence: 99%

Section: Bicepand Related Experimentsmentioning

confidence: 99%

BICEP2, Planck, spinorial space-time, pre-Big Bang.

Gonzalez‐Mestres

2015

EPJ Web of Conferences

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“…1 On the detector end, a very promising approach is the microstrip-coupled superconducting transition edge sensors (TES), with microstrip inline filters to define science bands. [3][4][5] The migration from semiconductor bolometers to TES bolometers enables the readout of thousands of pixels with moderate electronics complexity. This is achieved by superconducting quantum interference device (SQUID) multiplexers, 6, 7 now a mature technology.…”

Section: Introductionmentioning

confidence: 99%

Antenna-coupled TES bolometer arrays for CMB polarimetry

et al. 2008

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We describe the design and performance of polarization selective antenna-coupled TES arrays that will be used in several upcoming Cosmic Microwave Background (CMB) experiments: SPIDER, BICEP-2/SPUD. The fully lithographic polarimeter arrays utilize planar phased-antennas for collimation (F/4 beam) and microstrip filters for band definition (25% bandwidth). These devices demonstrate high optical efficiency, excellent beam shapes, and well-defined spectral bands. The dual-polarization antennas provide well-matched beams and low cross polarization response, both important for high-fidelity polarization measurements. These devices have so far been developed for the 100 GHz and 150 GHz bands, two premier millimeter-wave atmospheric windows for CMB observations. In the near future, the flexible microstrip-coupled architecture can provide photon noise-limited detection for the entire frequency range of the CMBPOL mission. This paper is a summary of the progress we have made since the 2006 SPIE meeting in Orlando, FL

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“…It was completed in 2012 [83], modified in 2013-2014 [79] and further improved in 2015 [84]. Articles with Keck Array results are [15,85,86].…”

Section: Bicep Keck Array and Related Experimentsmentioning

confidence: 99%

“…The BICEP2 experiment [4] was installed and operated in 2010-2012 at the South Pole Station and has been the first experiment to use the antenna-coupled transition edge sensor (TES) arrays [77][78][79][80] fabricated at the Jet Propulsion Laboratory (JPL) [81].…”

Section: Bicep Keck Array and Related Experimentsmentioning

confidence: 99%

Big Bang, inflation, standard Physics… and the potentialities of new Physics and alternative cosmologies. Present statuts of observational and experimental Cosmology. Open questions and potentialities of alternative cosmologies

Gonzalez‐Mestres

2016

EPJ Web Conf.

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Abstract. A year ago, we wrote [1] that the field of Cosmology was undergoing a positive and constructive crisis. The possible development of more direct links between the Mathematical Physics aspects of cosmological patterns and the interpretation of experimental and observational results was particularly emphasized. Controversies on inflation are not really new, but in any case inflation is not required in pre-Big Bang models and the validity of the standard Big Bang + inflation + ΛCDM pattern has not by now been demonstrated by data. Planck has even explicitly reported the existence of "anomalies". Remembering the far-reaching work of Yoichiro Nambu published in 1959-61, it seems legitimate to underline the need for a cross-disciplinary approach in the presence of deep, unsolved theoretical problems concerning new domains of matter properties and of the physical world. The physics of a possible preonic vacuum and the associated cosmology constitute one of these domains. If the vacuum is made of superluminal preons (superbradyons), and if standard particles are vacuum excitations, how to build a suitable theory to describe the internal structure of such a vacuum at both local and cosmic level? Experimental programs (South Pole, Atacama, AUGER, Telescope Array...) and observational ones (Planck, JEM-EUSO...) devoted to the study of cosmic microwave background radiation (CMB) and of ultra-high energy cosmic rays (UHECR) are crucial to elucidate such theoretical interrogations and guide new phenomenological developments. Together with a brief review of the observational and experimental situation, we also examine the main present theoretical and phenomenological problems and point out the role new physics and alternative cosmologies can potentially play. The need for data analyses less focused a priori on the standard models of Particle Physics and Cosmology is emphasized in this discussion. An example of a new approach to both fields is provided by the pre-Big Bang pattern based on a physical vacuum made of superbradyons with the spinorial space-time (SST) geometry we introduced in 1996-97. In particular, the SST automatically generates a local privileged space direction (PSD) for earch comoving observer and such a signature may have been confirmed by Planck data. Both superluminal preons and the existence of the PSD would have strong cosmological implications. Planck 2016 results will be particularly relevant as a step in the study of present open questions.

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Antenna-coupled TES bolometers for CMB polarimetry

Cited by 8 publications

References 23 publications

BICEP2, Planck, spinorial space-time, pre-Big Bang.

BICEP2, Planck, spinorial space-time, pre-Big Bang.

Antenna-coupled TES bolometer arrays for CMB polarimetry

Big Bang, inflation, standard Physics… and the potentialities of new Physics and alternative cosmologies. Present statuts of observational and experimental Cosmology. Open questions and potentialities of alternative cosmologies

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