E. de Haas
A5010738136- Neutrino Physics Research
- Particle Detector Development and Performance
- Galaxies: Formation, Evolution, Phenomena
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Stellar, planetary, and galactic studies
- Astronomical Observations and Instrumentation
- Scientific Research and Discoveries
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced MEMS and NEMS Technologies
- Mass Spectrometry Techniques and Applications
- Nuclear Physics and Applications
- Force Microscopy Techniques and Applications
- Atomic and Molecular Physics
- Advanced Materials Characterization Techniques
- Advanced Sensor Technologies Research
- Integrated Circuits and Semiconductor Failure Analysis
- Winter Sports Injuries and Performance
- Advanced Measurement and Metrology Techniques
- Biosensors and Analytical Detection
European Molecular Biology Laboratory
2021
Princeton University
1998-2013
Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2013
Institute for Atomic and Molecular Physics
1967-1998
The Sloan Digital Sky Survey (SDSS) will provide the data to support detailed investigations of distribution luminous and nonluminous matter in universe: a photometrically astrometrically calibrated digital imaging survey π sr above about Galactic latitude 30° five broad optical bands depth g' ∼ 23 mag, spectroscopic approximately 106 brightest galaxies 105 quasars found photometric object catalog produced by survey. This paper summarizes observational parameters products SDSS serves as an...
This paper describes the Seventh Data Release of Sloan Digital Sky Survey (SDSS), marking completion original goals SDSS and end phase known as SDSS-II. It includes 11,663 deg2 imaging data, with most ∼2000 increment over previous data release lying in regions low Galactic latitude. The catalog contains five-band photometry for 357 million distinct objects. survey also repeat on a 120° long, 25 wide stripe along celestial equator Southern Cap, some covered by many 90 individual runs. We...
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere collect spectra ≈106 galaxies, 100,000 quasars, 30,000 stars, serendipity targets. In 2001 June, SDSS released to general astronomical community its early data release, roughly 462 deg2 including almost 14 million detected objects 54,008 follow-up spectra. were collected in drift-scan mode five bandpasses (u, g, r, i, z); our 95% completeness...
We have constructed a large-format mosaic CCD camera for the Sloan Digital Sky Survey. The consists of two arrays, photometric array that uses 30 2048 × SITe/Tektronix CCDs (24 μm pixels) with an effective imaging area 720 cm2 and astrometric 24 400 same pixel size, which will allow us to tie bright standard stars objects imaged in camera. instrument be used carry out photometry essentially simultaneously five color bands spanning range accessible silicon detectors on ground...
This paper describes the Fourth Data Release of Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The release includes five-band photometric for 180 million objects selected over 6670 deg2 and 673,280 spectra galaxies, quasars, stars from 4783 those imaging using standard SDSS target selection algorithms. These numbers represent a roughly 27% increment Third Release; previous releases are included in present release. also an additional 131,840...
This paper describes the Fifth Data Release (DR5) of Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through June 2005 and represents completion SDSS-I project (whose successor, SDSS-II will continue mid-2008). It five-band photometric for 217 million objects selected over 8000 square degrees, 1,048,960 spectra galaxies, quasars, stars from 5713 degrees that imaging data. These numbers represent a roughly 20% increment those Fourth Release; previous releases are...
The Sloan Digital Sky Survey (SDSS) mosaic camera and telescope have obtained five-band optical-wavelength imaging near the Galactic plane outside of nominal survey boundaries. These additional data were during commissioning subsequent testing SDSS observing system, they provide unique wide-area in regions high obscuration star formation, including numerous young stellar objects, Herbig-Haro clusters. Because these are caps, not part standard releases. This paper presents for 832 square...
The DarkSide staged program utilizes a two-phase time projection chamber (TPC) with liquid argon as the target material for scattering of dark matter particles. Efficient background reduction is achieved using low radioactivity underground well several experimental handles such pulse shape, ratio ionization over scintillation signal, 3D event reconstruction, and active neutron muon vetos. DarkSide-10 prototype detector has proven high light yield, which particularly important parameter it...
We report on the first large-scale production of low radioactivity argon from underground gas wells. Low is general interest, in particular for construction large scale WIMP dark matter searches and detectors reactor neutrinos non-proliferation efforts. Atmospheric has an activity about 1 Bq/kg decays 39Ar; concentration 39Ar we are collecting at least a factor 100 lower than this value. The collected stream CO2 well southwestern Colorado with Vacuum Pressure Swing Adsorption (VPSA) plant....
In this article we introduce a novel scanning tunneling microscope (STM), which operates in sample temperature range from 60 to at least 850 K. The most important new feature of STM is that, while one selected part the surface kept within microscope’s field view, can be varied over wide several hundreds degrees during actual imaging. extremely low drift scanner and was achieved by combination thermal-drift compensated piezoelectric design with newly developed stage. stage defines fixed...
We report on the performance and commissioning of a cryogenic distillation column for low radioactivity underground argon at Fermi National Accelerator Laboratory. The is designed to accept mixture argon, helium, nitrogen return pure with contamination less than 10 ppm. In first commissioning, we were able run in continuous mode produce that 99.9% pure. After running batch mode, purity was increased 99.95%, 500 ppm remaining. efficiency collecting from gas between 70% 81%, an production rate...
In order to get information about the excitation processes in a discharge tube, spectrograph has been built, which scans range between visible and far ultraviolet. Using Paschen-Runge mounting spectrum detected with cooled E.M.I. photomultiplier, can move along Rowland circle velocity of 0.1–12 A per second. At wavelength 2500 A, 0.6 could be resolved.
We report on the first measurement of 39Ar in argon from underground natural gas reservoirs. The stored US National Helium Reserve was found to contain a low level 39Ar. ratio stable be ≤4×10-17 (84% C.L.), less than 5% value atmospheric (39Ar/Ar=8×10-16). total quantity currently is estimated at 1000 tons. represents one most important backgrounds detectors for WIMP dark matter searches. findings reported demonstrate possibility constructing large multi-ton with radioactivity suitable