A5075613817- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- X-ray Spectroscopy and Fluorescence Analysis
- Geophysical and Geoelectrical Methods
- Magnetic Field Sensors Techniques
- Spacecraft and Cryogenic Technologies
- Nuclear Physics and Applications
- Non-Destructive Testing Techniques
- Calibration and Measurement Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Astronomical Observations and Instrumentation
Harvard University
2003-2022
Harvard University Press
2003-2017
Princeton Plasma Physics Laboratory
2004-2006
Fermi National Accelerator Laboratory
2002
This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos Fermilab NuMI beam. The rates and energy spectra of charged current ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ interactions are compared in two detectors located along beam axis at distances 1 735 km. With $1.27\ifmmode\times\else\texttimes\fi{}{10}^{20}$ 120 GeV protons incident target, 215 events with energies below 30 observed Far Detector, an expectation $336\ifmmode\pm\else\textpm\fi{}14$...
We report results from the first search for νμ→νe transitions by NOvA experiment. In an exposure equivalent to 2.74×1020 protons on target in upgraded NuMI beam at Fermilab, we observe 6 events Far Detector, compared a background expectation of 0.99±0.11(syst) based Near Detector measurement. A secondary analysis observes 11 with 1.07±0.14(syst). The 3.3σ excess observed primary disfavors 0.1π<δCP<0.5π inverted mass hierarchy 90% C.L.Received 19 January...
This paper reports the first measurement using NOvA detectors of ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ disappearance in a beam. The analysis uses 14 kton-equivalent exposure $2.74\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons-on-target from Fermilab NuMI Assuming normal neutrino mass hierarchy, we measure $\mathrm{\ensuremath{\Delta}}{m}_{32}^{2}=({2.52}_{\ensuremath{-}0.18}^{+0.20})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}\text{ }\text{ }{\mathrm{eV}}^{2}$ and...
The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth 2070 meters water-equivalent in Soudan mine, Minnesota. This paper presents first observations muon neutrino and anti-neutrino charged-current atmospheric interactions based on an exposure 418 days. ratio upward to downward-going events is compared Monte Carlo expectation absence oscillations giving: R_data(up/down)/R_MC(up/down) = 0.62^{+0.19}_{-0.14} (stat.) +- 0.02 (sys.). An...
The science focal plane of the Large Synoptic Survey Telescope is made up 21 modules designated "raft towers". Each raft tower module (RTM) an autonomous, fully-testable and serviceable 144 Mpixel imager consisting nine highly-segmented CCDs with complete readout electronics chain. To minimize noise obscuration RTM housed in a compact enclosure fully contained within camera cryostat. required to meet strict performance goals for image flatness, speed, noise, power dissipation. Key components...
The MINOS detectors will use extruded plastic scintillator strips, which are readout by wavelength-shifting fibres coupled to multi-pixel photodetectors. This technique provides excellent energy and spatial resolution. described in detail along with results from the light output tests.
The MINOS experiment is a long baseline search for neutrino oscillations in an intense beam produced at Fermilab. This intercepted by two detectors; the Near Detector Fermilab and Far located distance of 735 km mine Soudan, MN. iron/scintillator tracking calorimeter comprising some 185 000 channels optical fibers read out multi-anode photomultiplier tubes. As this writing, has been completely installed instrumented with readout system. system, along performance measurements, will be presented.
The ART Data Driver Card (ADDC) will be used in the ATLAS muon upgrade to process and transmit Address Real Time (ART) signals, which are generated by front end chip (VMM) indicate location of first above-threshold event. This signal is encoded represent address threshold-crossing strip for trigger processing magnitude information not included. ADDC installed on detector with high radiation magnetic field thus a custom ASIC (ART ASIC) receive signals from VMM do hit-selection processing....
A new hardware trigger system based on tracks detected by a stereo drift chamber has been developed for the BABAR experiment at Stanford Linear Accelerator Center. The z0 pT Discriminator (ZPD) is capable of fast, 3-dimensional reconstruction charged particle tracks, and provides rejection background events due to beam particles interacting with pipe first-level trigger. Over 1 gigabyte data processed per second each ZPD module. Rapid track realized use latest-generation FPGAs.
A new hardware trigger system based on tracks detected by a stereo drift chamber has been developed for the BABAR experiment at Stanford Linear Accelerator Center. The z/sub 0/p/sub T/ Discriminator (ZPD) is capable of fast, three-dimensional reconstruction charged particle and provides rejection background events due to beam particles interacting with pipe first-level trigger. Over 1 gigabyte data processed per second each ZPD module. Rapid track realized using Xilinx Virtex-II FPGAs.
A digital instrument that allows the measurement of mechanical tension an array wires known length and density, testing their electrical continuity isolation, has been developed. The measures wire by measuring fundamental frequency wire. Its working principle is to apply direct high voltages on neighboring a under test sweeping alternating voltage also applied those neighbors. resonance observed in readout signal middle when coincides with its frequency. automates process over 128 wires,...