Publications (20)
Improvement and protection of niobium surface superconductivity by Atomic Layer Deposition and heat treatment
T. Proslier, J. Zasadzinski, J. Moore +6
A method to treat the surface of Nb is described which potentially can improve the performance of superconducting RF cavities. We present tunneling and x-ray photoemission spectros…
Kilometer-precise (UII) Umbriel physical properties from the multichord stellar occultation on 2020 September 21
M. Assafin, S. Santos-Filho, B. E. Morgado +39
We report the results of the stellar occultation by (UII) Umbriel on September 21st, 2020. The shadow crossed the USA and Canada, and 19 positive chords were obtained. A limb param…
The Simons Observatory: forecasted constraints on primordial gravitational waves with the expanded array of Small Aperture Telescopes
The Simons Observatory Collaboration, I. Abril-Cabezas, S. Adachi +479
We present updated forecasts for the scientific performance of the degree-scale (0.5 deg FWHM at 93 GHz), deep-field survey to be conducted by the Simons Observatory (SO). By 2027,…
Milliarcsecond astrometry for the Galilean moons using stellar occultations
B. E. Morgado, A. R. Gomes-Júnior, F. Braga-Ribas +40
A stellar occultation occurs when a Solar System object passes in front of a star for an observer. This technique allows the determination of sizes and shapes of the occulting body…
The Zadko Telescope: A Southern Hemisphere Telescope for Optical Transient Searches, Multi-Messenger Astronomy and Education
D. M. Coward, M. Todd, T. P. Vaalsta +17
The new 1-m f/4 fast-slew Zadko Telescope was installed in June 2008 about 70 km north of Perth, Western Australia. It is the only metre-class optical facility at this southern lat…
A DC magnetic metamaterial
F. Magnus, B. Wood, J. Moore +7
Electromagnetic metamaterials are a class of materials which have been artificially structured on a subwavelength scale. They are currently the focus of a great deal of interest be…
Critical Fields and Critical Currents in MgB2
A. D. Caplin, Y. Bugoslavsky, L. F. Cohen +4
We review recent measurements of upper (Hc2) and lower (Hc1) critical fields in clean single crystals of MgB2, and their anisotropies between the two principal crystallographic dir…
Scaling slowly rotating asteroids by stellar occultations
A. Marciniak, J. Äurech, A. Choukroun +176
As evidenced by recent survey results, majority of asteroids are slow rotators (P>12 h), but lack spin and shape models due to selection bias. This bias is skewing our overall unde…
A Call to Arms Control: Synergies between Nonproliferation Applications of Neutrino Detectors and Large-Scale Fundamental Neutrino Physics Experiments
T. Akindele, T. Anderson, E. Anderssen +162
The High Energy Physics community can benefit from a natural synergy in research activities into next-generation large-scale water and scintillator neutrino detectors, now being st…
Super-conducting critical fields and anisotropy of a MgB2 single crystal
G. K. Perkins, J. Moore, Y. Bugoslavsky +5
Despite the intense activity in the year since the discovery of superconductivity in MgB2, key parameters, in particular the upper and lower critical fields Hc2 and Hc1 and their a…
Detection and characterisation of binary asteroid candidates through stellar occultations
R. Lallemand, J. Desmars, B. Sicardy +256
Binary asteroids provide key access to fundamental parameters of Solar System remnants and planetary formations. However, the current knowledge of binary asteroids remains strongly…
The first six months of the Advanced LIGO's and Advanced Virgo's third observing run with GRANDMA
S. Antier, S. Agayeva, V. Aivazyan +74
We present the Global Rapid Advanced Network Devoted to the Multi-messenger Addicts (GRANDMA). The network consists of 21 telescopes with both photometric and spectroscopic facilit…
The new radiation-hard optical links for the ATLAS pixel detector
Richard Kass, K. K. Gan, H. P. Kagan +6
The ATLAS detector is currently being upgraded with a new layer of pixel based charged particle tracking and a new arrangement of the services for the pixel detector. These upgrade…
The Zadko telescope results: ten years of science
B. Gendre, D. Coward, J. Moore +5
The 1.0 meter f/4 fast-slew Zadko telescope is located in Western Australia, approximately seventy kilometers north of Perth at Yeal in the Shire of Gingin in a dedicated "low-lumi…
Effects of proton irradiation and ageing on the superconducting properties of single crystalline and polycrystalline MgB2
G. K. Perkins, Y. Bugoslavsky, A . D. Caplin +7
We present magnetisation data on crystalline and polycrystalline MgB2 before and after irradiation with ~1MeV protons. In the virgin crystal the critical current density is below o…
Effective Vortex Pinning in MgB2 thin films
Y. Bugoslavsky, L. Cowey, T. J. Tate +13
We discuss pinning properties of MgB2 thin films grown by pulsed-laser deposition (PLD) and by electron-beam (EB) evaporation. Two mechanisms are identified that contribute most ef…
Production and Integration of the ATLAS Insertable B-Layer
B. Abbott, J. Albert, F. Alberti +373
During the shutdown of the CERN Large Hadron Collider in 2013-2014, an additional pixel layer was installed between the existing Pixel detector of the ATLAS experiment and a new, s…
The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope
The Simons Observatory Collaboration, M. Abitbol, I. Abril-Cabezas +419
We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large A…
Volatile transport modeling on Triton with new observational constraints
T. Bertrand, E. Lellouch, B. J. Holler +18
Neptune's moon Triton shares many similarities with Pluto, including volatile cycles of N2, CH4 and CO, and represents a benchmark case for the study of surface-atmosphere interact…
Tunneling study of cavity grade Nb: possible magnetic scattering at the surface
T. Proslier, J. F. Zasadzinski, L. Cooley +5
Tunneling spectroscopy was performed on Nb pieces prepared by the same processes used to etch and clean superconducting radio frequency (SRF) cavities. Air exposed, electropolished…