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Proton Collider Experiments
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Particle Physics Review and Database
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Dark Matter & Dark Energy
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Quark & Lepton Flavor Physics
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Proton Collider Experiments
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ATLAS
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The ATLAS experiment is being constructed by 1800
collaborators in 150 institutes around the world. It will study
proton-proton interactions at the Large Hadron Collider
(LHC) at the European Laboratory for Particle Physics
CERN . The detector is due to begin operation in the year
2007. The primary purpose of the detector will be studies of
the origin of mass at the electroweak scale, therefore the
detector has been designed for sensitivity to the largest
possible Higgs mass range. The detector will also be used for
studies of top quark decays and supersymmetry searches.
http://www-atlas.lbl.gov/
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CDF
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The Collider Detector at Fermilab (CDF) experimental collaboration is committed to studying
high energy particle collisions at the world's highest energy particle accelerat
or. The goal is to
discover the identity and properties of the particles that make up the universe
and to understand
he forces and interactions between those particles.
http://www-cdf.lbl.gov/
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D-Zero
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Experiment at the FERMILAB Tevatron proton-antiproton Collider
http://d0lbln.lbl.gov/wwwd0/d0.html
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Dark Matter & Dark Energy
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Supernova Cosmology
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The SCP is conducting a search for very distant (redshifts greater than 1.2) Type Ia
supernovae using the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope.
The Supernova Cosmology Project developed key analytic techniques that, by interpreting
supernova measurements, could be used to determine the cause of the expansion rate of
the universe.
http://www-supernova.lbl.gov
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Supernova Factory
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The Nearby Supernova Factory (SNfactory) is designed to address a wide range of supernova issues
using detailed observations of low-redshift SN, and accordingly includes a broader
cross-section of scientists working on supernovae than could be accommodated within the
mandate of the Supernova Cosmology Project itself. The Nearby Supernova Factory is a
direct descendant of the very successful Spring 1999 Nearby Campaign, and will also
function as a proving ground for the Supernova Acceleration Probe (SNAP).
http://snfactory.lbl.gov
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SNAP Supernova / Acceleration Probe
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Supernova studies discovered cosmic acceleration. A new mission, the
Supernova / Acceleration Probe (SNAP), will greatly advance our
understanding of this discovery and the fundamental new physics it
implies.
SNAP will study thousands of high redshift supernovae, each with
unprecedented precision, using a 2-meter telescope with a one degree
wide field-of-view and a unique billion-pixel camera. The SNAP
instruments will cover the wavelength range from 400 nm to 1700 nm with
spectro-photometry, and can discover and study with equal accuracy
supernovae from redshifts of 0.3 up to 1.7. The supernovae will be used
as cosmic markers of the scale of the universe over time to construct a
history of the universe's growth.
http://snap.lbl.gov
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CCD's for SNAP and ground-based astronomy
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Charge-coupled devices (CCD's) are the imagers of choice in astronomy. The
conventional thinned rear-illuminated n-channel CCD's have limitations
which are overcome by the innovative LBNL "shocking red" design. This
p-channel device is made on very high resistivity silicon, and in
operation the entire 200-600 um substrate is totally depleted. Because it
is thick, it is uniquely sensitive to near-infrared light. Since it has
no field-free region, it has the best available spatial resolution. It is
up to an order of magnitude more radiation resistant than normal n-channel
devices. This CCD is proposed as the SNAP optical imager, but
large-format devices will also be deployed on ground-based telescopes
(such as the Keck) as soon as possible. The SNAP poster image shown above
was obtained with such an imager at Kitt Peak, and another has permitted
the UCB et al. planet search group at Lick Observatory to significantly
reduce their radial velocity errors, permitting detection of lower-mass
exoplanets.
http://www-ccd.lbl.gov/
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CMB and Astrophysics Theory
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The CMB provides information on the initial conditions for large scale structure,
such as galaxies, clusters of galaxies, etc. and information on the geometry and dyna
mics of the Universe.
CMB observations reveal information on the origin of space-time and the energetic
processes occuring at that epoch and succeeding epochs.
Accurate, high-resolution CMB observations can provide precise determination of various
cosmological parameters, e.g. the total mass-energy density of the Universe (Omega_total),
the Hubble expansion rate (Ho), the density of baryons (Omega_b) in the Universe,
various parameters of inflation or of topological defects, the cosmological constant.
These must be determined within the context of a specific model; however,
detailed CMB observations are capable of discriminating between cosmological models.
http://aether.lbl.gov/
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CMB Instrumentation
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Detector development of wafer-scale bolometer arrays using photolithographic techniques
for CMB experiments.
1. APEX-SZ:
Galaxy cluster search using Sunyaev-Zel'dovich Effect
UC Berkeley, LBNL, and MPIfR Bonn
12m telescope on Atacama Plateau
320 bolometer array
2. South Pole Telescope:
Univ. Chicago, UC Berkeley, Case Western, Harvard CfA, Univ. Illinois, LBNL
10m telescope at South Pole
1000 bolometer array
3. PolarBear:
UC Berkeley, LBNL, UC San Diego
3m telescope on White Mountain, CA
Specifically designed for CMB polarization
Test bed for new technologies
"Multi-color" pixels with dual polarization
Phase 1: 320 detectors
Phase 2: 1200 detectors
CMB and Cosmology
TES Bolometer Arrays for CMB Polarization
and SZ Measurements
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Quark & Lepton Flavor Physics
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CP-Violation
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BaBar
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BaBar is a particle physics experiment on the PEP-II B-Factory at
SLAC (Stanford Linear Accelerator Center). BaBar was designed primarily to study
the (a)symmetries of the neutral B-meson system, but its rich physics program includes a
variety of other b-quark, tau-lepton, and other particle physics topics.
BaBar_Home
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Neutrinos
APS Neutrino study report
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Kamland
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KamLAND stands for "Kamioka Liquid Scintillator Anti-Neutrino Detector".
With 1000 tons of light emitting liquid target viewed by 1879 50-cm diameter light-detecting
photomultiplier tubes, KamLAND is the largest scintillation detector ever constructed.
The first experimental goal, the measurement of the anti-neutrino flux from reactors
in Japan and Korea has been achieved.
http://kamland.lbl.gov/
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q13
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The proposed based Neutrino Reactor Experiment is an exciting new physics project that
will help us understand some of the fundamental properties of neutrinos and their role
in the Universe. There are strong evidences that neutrino oscillations have been observed
in experiments studying solar neutrino, atmospheric neutrino, and reactor anti-neutrino.
The next generation of reactor-based neutrino experiments could improve the precision of
some of the neutrino mixing parameters, and demonstrate an unambiguous oscillation pattern.
http://theta13.lbl.gov/
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Theoretical Physics
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Theory Group
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The Theory Group's efforts can be divided into two major categories: particle theory and formal theory.
Theoretical particle physics research is concerned with the standard model and possible deviations from, and extensions to, it. The group has worked on electroweak symmetry breaking, supersymmetry, grand unification, perturbative QCD, cosmology, and methods to test the standard model in current and future experiments.
The formal theory group works on string theory, quantum gravity, conformal field theory, quantum groups, topological field theory and the foundations of quantum mechanics.
http://www-theory.lbl.gov/
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Particle Physics Review and Database
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Particle Data Group
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The PDG is an international collaboration that reviews Particle Physics and related areas of
Astrophysics, and compiles/analyzes data on particle properties. PDG products are distributed
to 30,000 physicists, teachers, and other interested people. The Review of Particle Physics
is the most cited publication in particle physics during the last decade.
http://www-pdg.lbl.gov
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Educational Activities
International Linear Collider
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ILC Physics and Detector R&D
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The International Linear Collider is a proposed future international particle accelerator.
It would create high-energy particle collisions between electrons and positrons,
their antimatter counterparts. The ILC would provide a tool for scientists to address many of
the most compelling questions of the 21st century-questions about dark matter, dark energy,
extra dimensions and the fundamental nature of matter, energy, space and time.
From its inception, the ILC would be designed, funded, managed and operated as an international
scientific project.
http://www-ilc.lbl.gov/ILC.html
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