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We investigate the performance of the parametric Maximum Likelihood component separation method in the context of the CMB B-mode signal detection and its characterization by small-scale CMB suborbital experiments. We consider…

宇宙学与河外天体物理 · 物理学 2010-11-09 F. Stivoli , J. Grain , S. M. Leach , M. Tristram , C. Baccigalupi , R. Stompor

We describe a dispersive nanoSQUID magnetometer comprised of two variable thickness aluminum weak-link Josephson junctions shunted in parallel with an on-chip capacitor. This arrangement forms a nonlinear oscillator with a tunable 4-8 GHz…

介观与纳米尺度物理 · 物理学 2013-04-16 E. M. Levenson-Falk , R. Vijay , N. Antler , I. Siddiqi

Magnetic Resonance Force Microscopy (MRFM) is a powerful technique to detect a small number of spins that relies on force-detection by an ultrasoft magnetically tipped cantilever and selective magnetic resonance manipulation of the spins.…

介观与纳米尺度物理 · 物理学 2015-05-28 A. Vinante , G. Wijts , O. Usenko , L. Schinkelshoek , T. H. Oosterkamp

The Planck satellite has identified several patches of sky with low polarized dust emission, obvious targets for searches for the cosmic-microwave-background (CMB) B-mode signal from inflationary gravitational waves. Still, given the Planck…

宇宙学与河外天体物理 · 物理学 2015-04-23 Ely D. Kovetz , Marc Kamionkowski

We report the results of an effort to measure the low frequency portion of the spectrum of the Cosmic Microwave Background Radiation (CMB), using a balloon-borne instrument called ARCADE (Absolute Radiometer for Cosmology, Astrophysics, and…

天体物理学 · 物理学 2009-11-10 D. J. Fixsen , A. Kogut , S. Levin , M. Limon , P. Lubin , P. Mirel , M. Seiffert , E. Wollack

We investigated, at temperature $4.2\,\mathrm{K}$, electric transport, flux noise and resulting spin sensitivity of miniaturized Nb direct current superconducting quantum interference devices (SQUIDs) based on submicron Josephson junctions…

超导电性 · 物理学 2015-05-28 J. Nagel , O. F. Kieler , T. Weimann , R. Wölbing , J. Kohlmann , A. B. Zorin , R. Kleiner , D. Koelle , M. Kemmler

GroundBIRD is a ground-based experiment for the precise observation of the polarization of the cosmic microwave background (CMB). To achieve high sensitivity at large angular scale, we adopt three features in this experiment: fast rotation…

Superfluid helium-3 bolometers can be utilised for dark matter direct detection searches. The extremely low heat capacity of the B phase of the superfluid helium-3 at ultra-low temperatures offers the potential to reach world leading…

We present the design and construction of a SQUID-based magnetometer for operation down to temperatures T = 10 mK, while retaining the compatibility with the sample holders typically used in commercial SQUID magnetometers. The system is…

仪器与探测器 · 物理学 2007-05-23 A. Morello , W. G. J. Angenent , G. Frossati , L. J. de Jongh

Measurements of the 2.7 K cosmic microwave background (CMB) radiation now provide the most stringent constraints on cosmological models. The power spectra of the temperature anisotropies and the $E$-mode polarization of the CMB are…

宇宙学与河外天体物理 · 物理学 2010-07-01 Siddharth Savyasachi Malu , Peter T Timbie

Polarized Galactic foregrounds are one of the primary sources of systematic error in measurements of the B-mode polarization of the Cosmic Microwave Background (CMB). Experiments are becoming increasingly sensitive to complexities in the…

宇宙学与河外天体物理 · 物理学 2018-11-13 Brandon S. Hensley , Philip Bull

We describe the Cosmic Microwave Background (CMB) polarization experiment called Polarbear. This experiment will use the dedicated Huan Tran Telescope equipped with a powerful 1,200-bolometer array receiver to map the CMB polarization with…

The Axion Dark Matter eXperiment (ADMX) was designed to detect ultra-weakly interacting relic axion particles by searching for their conversion to microwave photons in a resonant cavity positioned in a strong magnetic field. Given the…

This work presents a detailed analysis of Cosmic Microwave Background (CMB) radiation intensity observations. The CMB is a relic of the Big Bang and its study greatly enhances our knowledge of cosmology. This work has led to new values for…

天体物理学 · 物理学 2007-05-23 Henrik P. Nordberg , George F. Smoot

We propose an innovative demodulation scheme for coherent detectors used in cosmic microwave background polarization experiments. Removal of non-white noise, e.g., narrow-band noise, in detectors is one of the key requirements for the…

天体物理仪器与方法 · 物理学 2012-05-22 K. Ishidoshiro , Y. Chinone , M. Hasegawa , M. Hazumi , M. Nagai , O. Tajima

In this paper, we present a reconfigurable multiplex (MUX) setup that increases the throughput of electrical characterisation at cryogenic temperature. The setup separates the MUX circuitry from quantum device under test (qDUT), allowing…

介观与纳米尺度物理 · 物理学 2024-03-29 Xinya Bian , Hannah J Joyce , Charles G Smith , Michael J Kelly , G Andrew D Briggs , Jan A Mol

In this paper we present a novel way to manufacture the bulk Micromegas detector. A simple process based on the PCB (Printed Circuit Board) technology is employed to produce the entire sensitive detector. Such fabrication process could be…

仪器与探测器 · 物理学 2009-11-11 I. Giomataris , R. De Oliveira , S. Andriamonje , S. Aune , G. Charpak , P. Colas , A. Giganon , Ph. Rebourgeard , P. Salin