T. Burgess
A5062388550- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Magnetic confinement fusion research
- Fusion materials and technologies
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Radio Astronomy Observations and Technology
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Black Holes and Theoretical Physics
- Indoor and Outdoor Localization Technologies
- Distributed and Parallel Computing Systems
- advanced mathematical theories
- Muon and positron interactions and applications
- Gamma-ray bursts and supernovae
- Nuclear reactor physics and engineering
- Medical Imaging Techniques and Applications
- Radio Wave Propagation Studies
- Particle Accelerators and Free-Electron Lasers
Oak Ridge National Laboratory
2002-2016
University of Bergen
2010-2015
Rutherford Appleton Laboratory
2009-2013
Ludwig-Maximilians-Universität München
2012-2013
The University of Adelaide
2013
Nagoya University
2013
European Organization for Nuclear Research
2010-2012
MSD (Serbia)
2011
Fisheries Research Institute of Slovenia
2011
Wallenberg Wood Science Center
2011
We have remotely mapped optical scattering and absorption in glacial ice at the South Pole for wavelengths between 313 560 nm depths 1100 2350 m. used pulsed continuous light sources embedded with AMANDA neutrino telescope, an array of more than six hundred photomultiplier tubes buried deep ice. At greater 1300 m, both coefficient absorptivity follow vertical variations concentration dust impurities, which are seen cores from other Antarctic sites track climatological changes. The varies by...
A search for muon neutrinos from neutralino annihilations in the Sun has been performed with IceCube 22-string neutrino detector using data collected 104.3 days of live time 2007. No excess over expected atmospheric background observed. Upper limits have obtained on annihilation rate captured neutralinos and converted to weakly interacting massive particle (WIMP) proton cross sections WIMP masses range 250-5000 GeV. These results are most stringent date Sun.
This paper describes a new Heterodyne Array Receiver Program (HARP) and Auto-Correlation Spectral Imaging System (ACSIS) that have recently been installed commissioned on the James Clerk Maxwell Telescope. The 16-element focal-plane array receiver, operating in submillimetre from 325 to 375 GHz, offers high (three-dimensional) mapping speeds, along with significant improvements over single-detector counterparts calibration image quality. temperatures are ∼120 K across whole band, system of...
Recent experiments (Synakowski et al 2004 Nucl. Fusion 43 1648, Lloyd Plasma Phys. Control. 46 B477) on the Spherical Tokamak (or Torus, ST) (Peng 2000 Plasmas 7 1681) have discovered robust plasma conditions, easing shaping, stability limits, energy confinement, self-driven current and sustainment. This progress has encouraged an update of conditions engineering a Component Test Facility (CTF), (Cheng 1998 Eng. Des. 38 219) which is very valuable step in development practical fusion energy....
A search for TeV-PeV muon neutrinos from unresolved sources was performed on AMANDA-II data collected between 2000 and 2003 with an equivalent live time of 807 days. This diffuse analysis sought to find extraterrestrial neutrino flux nonthermal components. The signal is expected have a harder spectrum than the atmospheric backgrounds. Since no excess events seen in over background, upper limit...
A potentially attractive next-step towards fusion commercialization is a pilot plant, i.e. device ultimately capable of small net electricity production in as compact facility possible and configuration scalable to full-size power plant. key capability for pilot-plant programme the high neutron fluence enabling nuclear science technology (FNST) research. It found that physics assumptions between those assumed ITER nth-of-a-kind it provide FNST-relevant wall loading devices. Thus, may be...
We describe an aperture synthesis radio telescope optimized for studies of the Galactic interstellar medium (ISM), providing ability to image extended structures with high angular resolution over wide fields. The produces images atomic hydrogen emission using 21-cm HI spectral line, and, simultaneously, continuum in two bands centred at 1420 MHz and 408 MHz, including linearly polarized synthesized beams respective frequencies. A full can achieve a sensitivity (rms) 0.28 mJy/beam 3.8...
A search for diffuse neutrinos with energies in excess of 105 GeV is conducted AMANDA-II data recorded between 2000 and 2002. Above 107 GeV, the Earth essentially opaque to neutrinos. This fact, combined limited overburden detector (roughly 1.5 km), concentrates these ultra-high-energy at horizon. The primary background this analysis bundles downgoing, high-energy muons from interaction cosmic rays atmosphere. No statistically significant above expected seen data, an upper limit set on...
The AMANDA-II detector, operating since 2000 in the deep ice at geographic South Pole, has accumulated a large sample of atmospheric muon neutrinos 100 GeV to 10 TeV energy range. zenith angle and distribution these events can be used search for various phenomenological signatures quantum gravity neutrino sector, such as violation Lorentz invariance (VLI) or decoherence (QD). Analyzing set 5511 candidate collected during 1387 days livetime from 2006, we find no evidence effects upper limits...
We present the results of a search for point sources high-energy neutrinos in northern hemisphere using AMANDA-II data collected year 2000. Included are flux limits on several active-galactic-nuclei blazars, microquasars, magnetars, and other candidate neutrino sources. A excesses above random background cosmic-ray-induced atmospheric misreconstructed downgoing cosmic-ray muons reveals no statistically significant show that has achieved sensitivity required to probe known TeV gamma-ray such...
The IceCube neutrino detector is a cubic kilometer TeV to PeV under construction at the geographic South Pole. dominant population of neutrinos detected in due meson decay cosmic-ray air showers. These atmospheric are relatively well understood and serve as calibration verification tool for new detector. In 2006, was approximately 10% completed, we report on data acquired from this configuration. We observe an signal consistent with expectations, demonstrating that capable identifying...
We present a search for point sources of high energy neutrinos using 3.8 yr data recorded by AMANDA-II during 2000–2006. After reconstructing muon tracks and applying selection criteria designed to optimally retain neutrino-induced events originating in the northern sky, we arrive at sample 6595 candidate events, predominantly from atmospheric with primary 100 GeV 8 TeV. Our this reveals no indications neutrino source. place most stringent limits date on E−2 fluxes points an average upper...
Data from the AMANDA-B10 detector taken during austral winter of 1997 have been searched for a diffuse flux high energy extraterrestrial muon neutrinos. This search yielded no excess events above those expected background atmospheric neutrinos, leading to upper limits on neutrino measured at earth. For an assumed E-2 spectrum, 90% classical confidence level limit has placed E2Phi(E)=8.4 x 10(-7) cm(-2) s(-1) sr(-1) GeV (for predominant range 6-1000 TeV), which is most restrictive bound by...
We report the results of a five-year survey northern sky to search for point sources high energy neutrinos. The was performed on data collected with AMANDA-II neutrino telescope in years 2000 2004, live time 1001 days. sample selected events consists 4282 upward going muon tracks reconstruction quality and an larger than about 100 GeV. found no indication neutrinos set 90% confidence level flux upper limits all-sky also catalog 32 sources. For search, our average (over declination right...