M. McCulloch
A5015445797- Superconducting and THz Device Technology
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Physics of Superconductivity and Magnetism
- Geophysics and Gravity Measurements
- Advanced Thermodynamic Systems and Engines
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Radio Frequency Integrated Circuit Design
- Particle physics theoretical and experimental studies
- Thermal properties of materials
- Astrophysics and Cosmic Phenomena
- Microwave Engineering and Waveguides
- Pulsars and Gravitational Waves Research
- Galaxies: Formation, Evolution, Phenomena
- Atomic and Subatomic Physics Research
- Scientific Research and Discoveries
- Advanced Frequency and Time Standards
- Astrophysics and Star Formation Studies
- Dark Matter and Cosmic Phenomena
- Spacecraft and Cryogenic Technologies
- Thermal Radiation and Cooling Technologies
- Gyrotron and Vacuum Electronics Research
- Semiconductor Quantum Structures and Devices
- Force Microscopy Techniques and Applications
University of Manchester
2014-2024
Digital Catapult
2024
Hanoi University of Science and Technology
2022
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2022
Sapienza University of Rome
2018-2020
University of Milan
2020
Universidad Nacional de La Plata
2020
Institute of Technology Carlow
2018
Laboratoire AstroParticule et Cosmologie
2018
Institut National de Physique Nucléaire et de Physique des Particules
2018
In this paper, we present Q-U-I JOint Tenerife Experiment (QUIJOTE) 10–20 GHz observations (194 h in total over ≈250 deg2) intensity and polarisation of G159.6-18.5, one the most widely studied regions harbouring anomalous microwave emission (AME). By combining with other publicly available data, achieve precise spectrum AME measured to date an individual region, 13 independent data points between 10 50 being dominated by emission. The four QUIJOTE provide first confirmation downturn at low...
The Q $\&$ U Bolometric Interferometer for Cosmology (QUBIC) is a novel kind of polarimeter optimized the measurement B-mode polarization Cosmic Microwave Background (CMB), which one major challenges observational cosmology. signal expected to be order few tens nK, prone instrumental systematic effects and polluted by various astrophysical foregrounds can only controlled through multichroic observations. QUBIC designed address these issues with approach that combines advantages...
The QUIJOTE (Q-U-I JOint Tenerife) CMB Experiment will operate at the Teide Observatory with aim of characterizing polarisation and other processes Galactic extragalactic emission in frequency range 10-40GHz large medium angular scales. first two telescopes multi-frequency (10-30GHz) instrument are already built have been tested laboratory. QUIJOTE-CMB be a valuable complement low frequencies for Planck mission, required sensitivity to detect primordial gravitational-wave component if...
Abstract A prototype version of the Q & U bolometric interferometer for cosmology (QUBIC) underwent a campaign testing in laboratory at Astroparticle Physics and Cosmology Paris (APC). The detection chain is currently made 256 NbSi transition edge sensors (TES) cooled to 320 mK. readout system 128:1 time domain multiplexing scheme based on 128 SQUIDs 1 K that are controlled amplified by SiGe application specific integrated circuit 40 K. We report performance this characterization TES....
Abstract The Q and U Bolometric Interferometer for Cosmology (QUBIC) is a ground-based experiment that aims to detect B-mode polarization anisotropies [1] in the CMB at angular scales around ℓ ≃100 recombination peak. Systematic errors make observations of B modes millimetre wavelengths very challenging QUBIC mitigates these problems somewhat complementary way other existing or planned experiments using novel technique bolometric interferometry. This takes advantage sensitivity an imager...
In this paper we describe QUBIC, an experiment that will observe the polarized microwave sky with a novel approach, which combines sensitivity of state-of-the art bolometric detectors systematic effects control typical interferometers. QUBIC unique features are so-called "self-calibration", technique allows us to clean measured data from instrumental effects, and its spectral imaging power, i.e. ability separate signal in various sub-bands within each frequency band. two main bands: 150 GHz...
Bolometric interferometry is a novel technique that has the ability to perform spectral imaging. A bolometric interferometer observes sky in wide frequency band and can reconstruct maps several sub-bands within physical post-processing of data. This provides powerful method discriminate between cosmic microwave background (CMB) astrophysical foregrounds. In this paper, methodology illustrated with examples based on Q \& U Interferometer for Cosmology (QUBIC) which ground-based instrument...
Current experiments aimed at measuring the polarization of Cosmic Microwave Background (CMB) use cryogenic detector arrays and cold optical systems to boost mapping speed sky survey. For these reasons, large volume systems, with windows, working continuously for years, are needed. Here we report on system QUBIC (Q U Bolometric Interferometer Cosmology) experiment: describe its design, fabrication, experimental optimization validation in Technological Demonstrator configuration. The is based...
The QUIJOTE-CMB project has been described in previous publications.Here we present the current status of QUIJOTE multi-frequency instrument (MFI) with five separate polarimeters (providing 5 independent sky pixels): two which operate at 10-14 GHz, 16-20 and a central polarimeter 30 GHz.The optical arrangement includes conical corrugated feedhorns staring into dual reflector crossed-draconian system, provides optimal cross-polarization properties (designed to be < -35 dB) symmetric...
A prototype version of the Q & U Bolometric Interferometer for Cosmology (QUBIC) underwent a campaign testing in laboratory at Astroparticle Physics and Paris. We report results this Technological Demonstrator which successfully shows feasibility principle Interferometry. Characterization QUBIC includes measurement synthesized beam, interference fringes, polarization performance. modulated frequency tunable millimetre-wave source telescope far-field is used to simulate point source. The...
Kinetic inductance travelling wave parametric amplifiers (KI-TWPAs) have been simulated using Keysight's Advanced Design System (ADS). A lumped element representation of a superconducting transmission line has developed nonlinear inductor elements to represent the current dependency intrinsic kinetic inductance. This provides fast, simple and easily modifiable method for analysing processes that occur in devices such as oscillators or amplifiers, while also allowing accompanying RF network...
We present the results of noise-temperature measurements for four radio astronomy MMIC low-noise amplifiers (LNAs) at physical temperatures from 2 to 160 K. observe and confirm recent reports that noise temperature an LNA exhibits a quadratic dependence with respect temperature. are also able prediction by Pospieszalski below certain there is no further significant reduction in then discuss these context both model some Monte–Carlo simulations, which have implied very low temperatures,...
Abstract We present the design, manufacturing and performance of horn-switch system developed for technological demonstrator QUBIC (the Q&U Bolometric Interferometer Cosmology). This consists 64 back-to-back dual-band (150 GHz 220 GHz) corrugated feed-horns interposed with mechanical switches used to select desired baselines during instrument self-calibration. manufactured horns in aluminum platelets milled by photo-chemical etching mechanically tightened screws. The are based on steel...
Abstract Setting an upper limit or detection of B-mode polarization imprinted by gravitational waves from Inflation is one goal modern large angular scale cosmic microwave background (CMB) experiments around the world. A great effort being made in deployment many ground-based, balloon-borne and satellite experiments, using different methods to separate this faint polarized component incoming radiation. QUBIC exploits most widely-used techniques extract input Stokes parameters, consisting a...
The Q&U Bolometric Interferometer for Cosmology (QUBIC) is the first bolometric interferometer designed to measure primordial B-mode polarization of Cosmic Microwave Background (CMB). interferometry a novel technique that combines sensitivity detectors with control systematic effects typical interferometry, both key features in quest faint signal B-modes. A unique feature so-called "spectral imaging", i.e., ability recover sky several sub-bands within physical band during data analysis. This...
QUIJOTE (Q-U-I JOint TEnerife) is a new polarimeter aimed to characterize the polarization of Cosmic Microwave Background and other Galactic extragalactic signals at medium large angular scales in frequency range 10-40 GHz. The multi-frequency (10-20~GHz) instrument, mounted on first telescope, saw light November 2012 from Teide Observatory (2400~m a.s.l). During 2014 second telescope has been installed this observatory. A instrument 30~GHz will be ready for commissioning during summer 2015,...
QUBIC is an instrument aiming at measuring the B mode polarisation anisotropies medium scales angular (30-200 multipoles). The search for primordial CMB B-mode polarization signal challenging, because of many difficulties: smallness expected signal, instrumental systematics that could possibly induce leakage from large E into B, brighter than anticipated polarized foregrounds (dust) reducing to zero initial hope finding sky regions clean enough have a direct B-modes observation. designed...
The QUIJOTE (Q-U-I JOint Tenerife) CMB Experiment is designed to observe the polarization of Cosmic Microwave Background and other Galactic extragalactic signals at medium large angular scales in frequency range 10-40 GHz. first two telescopes multi-frequency (10-20 GHz) instrument have been operation since November 2012. In 2014 a second telescope new 30GHz will be ready for commissioning, an additional 40 GHz its final design stages. After three years effective observations, data obtained...
QUIJOTE (Q-U-I JOint TEnerife) is an experiment designed to achieve CMB B-mode polarization detection and sensitive enough detect a primordial gravitational-wave component if the amplitude larger than r = 0.05. It consists in two telescopes three instruments observing frequency range 10-42 GHz installed at Teide Observatory Canary Islands, Spain. The strategy includes raster scan deep integration fields for cosmology, nominal wide survey covering Northen Sky specific observations regions of...
The QUIJOTE Experiment (Q-U-I JOint TEnerife) is a combined operation of two telescopes and three instruments working in the microwave band to measure polarization Cosmic Microwave Background (CMB) from northern hemisphere, at medium large angular scales. experiment located Teide Observatory Tenerife, one seven Canary Islands (Spain). project consortium maintained by several institutions: Instituto de Astrofísica Canarias (IAC), Física Cantabria (IFCA), Communications Engineering Department...
A progress report is provided on the development of a tiltable continuous miniature dilution refrigerator and associated <sup>3</sup>He/<sup>4</sup>He sorption coolers. These systems are currently being developed to provide sub-Kelvin cooling bolometer arrays for several ground- balloon-based experiments which aim measure polarization Cosmic Microwave Background (QUBIC, LSPE POLARBEAR-2). The novel miniaturised system benefits from lack external circulation pumps mechanically simple design....