A5055285150- Particle physics theoretical and experimental studies
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- Muon and positron interactions and applications
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Gyrotron and Vacuum Electronics Research
- Plasma Diagnostics and Applications
- Nuclear Physics and Applications
- Acoustic Wave Resonator Technologies
- Spacecraft and Cryogenic Technologies
- Physics of Superconductivity and Magnetism
- Cosmology and Gravitation Theories
- Graphite, nuclear technology, radiation studies
- Atomic and Subatomic Physics Research
- Magnetic confinement fusion research
- Electromagnetic Launch and Propulsion Technology
- Black Holes and Theoretical Physics
- Microwave Engineering and Waveguides
- Non-Destructive Testing Techniques
Particle Beam Lasers (United States)
2019-2022
Muons (United States)
2007-2021
Thomas Jefferson National Accelerator Facility
2014
Brookhaven National Laboratory
1998-2012
Fermi Research Alliance
2010-2012
Fermi National Accelerator Laboratory
2000-2010
Northwestern University
2006-2007
RIKEN BNL Research Center
2003-2006
University of Arizona
2005
University of Buenos Aires
2000
The status of the research on muon colliders is discussed and plans are outlined for future theoretical experimental studies. Besides continued work parameters a 3-4 0.5 TeV center-of-mass (CoM) energy collider, many studies now concentrating machine near 0.1 that could be factory s-channel production Higgs particles. We discuss various components in such colliders, starting from proton accelerator needed to generate pions heavy-Z target proceeding through phase rotation decay ($\pi \to \mu...
The quasielastic reaction ${\ensuremath{\nu}}_{\ensuremath{\mu}}n\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}p$ was studied in an experiment using the BNL 7-foot deuterium bubble chamber exposed to wide-band neutrino beam with average energy of 1.6 GeV. A total 1138 events momentum-transfer range ${Q}^{2}=0.06\ensuremath{-}3.00$ (${\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$ were selected by kinematic fitting and particle identification used extract axial-vector form...
We describe the status of our effort to realize a first neutrino factory and progress made in understanding problems associated with collection cooling muons towards that end. summarize physics can be done factories as well intense cold beams muons. The potential muon colliders is reviewed, both Higgs Factories compact high energy lepton colliders. timescale research development reviewed latest designs channels including promise ring coolers achieving longitudinal transverse simultaneously....
We analyze the prospects of a feasible, Brookhaven National Laboratory based, very long baseline neutrino oscillation experiment consisting conventional horn produced low energy wideband beam and detector 500 kton fiducial mass with modest requirements on event recognition resolution. Such an is intended primarily to determine $\mathrm{CP}$ violating effects in sector for 3-generation mixing. sensitivity such experiment. conclude that this will allow determination phase...
There have been active efforts in the U.S., Europe, and Japan on design of a Neutrino Factory. This type facility produces intense beams neutrinos from decay muons high energy storage ring. In second detailed Feasibility Study (FS2) for Factory was completed 2001. Since that report published, new ideas bunching, cooling acceleration muon developed. We incorporated these into design, which we designate as 2B (ST2B), should lead to significant cost savings over FS2 design.
We have observed eleven events of the reaction ${\ensuremath{\nu}}_{\ensuremath{\mu}}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\mu}}{e}^{\ensuremath{-}}$ in a sample 106 000 charged-current neutrino interactions heavy neon-hydrogen mixture 15-ft. bubble chamber at Fermilab. obtain cross section for this process $[(1.8\ifmmode\pm\else\textpm\fi{}0.8)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}42}...
We present upper limits on the production of heavy leptons (${L}^{\ifmmode\pm\else\textpm\fi{}}$) by neutrinos via process ${\ensuremath{\nu}}_{\ensuremath{\mu}}+\mathrm{Ne}\ensuremath{\rightarrow}{L}^{\ifmmode\pm\else\textpm\fi{}}+\ensuremath{\cdots}$, ${L}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{e}^{\ifmmode\pm\else\textpm\fi{}}+\ensuremath{\nu}+\overline{\ensuremath{\nu}}$. These imply that ${L}^{\ensuremath{-}}$ and ${L}^{+}$, if they couple in full strength to...
We report initial results of exposing low-Z solid and high-Z liquid targets to 150-ns, 4/spl times/10/sup 12/ proton pulses with spot sizes on the order 1 2 mm. The energy deposition density approached 100 J/g. Diagnostics included fiberoptic strain sensors target high-speed photography targets. This work is part R&D program Neutrino Factory Muon Collider Collaboration.
Muon Colliders have unique technical and physics advantages disadvantages when compared with both hadron electron machines. They should thus be regarded as complementary. Parameters are given of 4 TeV 0.5 high luminosity \mu^+ \mu^- colliders, a lower demonstration machine. We discuss the various systems in such muon starting from proton accelerator needed to generate muons proceeding through cooling, acceleration storage collider ring. Detector background, polarization, nonstandard...
A complete scheme for production and cooling a muon beam three specified colliders is presented. Parameters these are given. The starts with the front end of proposed neutrino factory that yields bunch trains both signs. Emittance exchange in slow helical lattices reduces longitudinal emittance until it becomes possible to merge into single bunches, one each sign. Further all dimensions applied bunches further lattices. Final transverse required parameters achieved 50 T solenoids using high...
MANX is a 6-dimensional muon ionization-cooling experiment that has been proposed to Fermilab demonstrate the use of Helical Cooling Channel (HCC) for future colliders and neutrino factories. The HCC solenoidal, helical dipole, quadrupole magnetic components which diminish as beam loses energy it slow down in liquid helium absorber inside magnets. Additional magnets provide emittance matching between upstream downstream spectrometers are also described results G4Beamline simulations cooling...
Magnets in the fragment separator region of Facility for Rare Isotope Beams (FRIB) would be subjected to extremely high radiation and heat loads. The critical elements FRIB are dipole magnets, which used select desired isotopes. Since conventional NiTi Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn superconductors must operate at ~ 4.5 K, removal load generated these magnets using difficult. High-temperature have been shown...
Due to their finite lifetime, muons must be accelerated very rapidly. It is challenging make the magnets ramp fast enough accelerate in a synchrotron, and accelerating linac expensive. One can use recirculating accelerator (like CEBAF), but one needs different arc for each turn, this limits number of turns accelerate, therefore requires significant amounts RF achieve desired energy gain. An alternative method muon acceleration using fixed field alternating gradient (FFAG) accelerator. Such...
A helical cooling channel (HCC) consisting of a pressurized gas absorber imbedded in magnetic that provides superimposed solenoidal, dipole, and quadrupole fields has shown considerable promise providing six-dimensional muon beams. The analysis this technique with both analytic simulation studies significant reduction phase space emittance. particular been simulated is divided into four segments each progressively smaller apertures stronger to reduce the equilibrium emittance so more can...
In many applications dipole magnets with coils having significant curvature are needed. This is particularly challenging for high temperature superconductors (HTSs) as they brittle. One possible application curved HTS was the fragment separator Facility Rare Isotope Beams (FRIB). For this these would operate in a radiation environment and be subject to heat load. Removal of generated using conventional Ni–Ti Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
MANX is an experiment to prove that effective six- dimensional (6D) muon beam cooling can be achieved in a Helical Cooling Channel (HCC) using ionization- with helical and solenoidal magnets novel configuration. The aim demonstrate 6D understood well enough plan intense neutrino factories high-luminosity colliders. consists of the HCC magnet envelops liquid helium energy absorber, upstream downstream instrumentation measure parameters before after cooling, emittance matching sections between...
Helical solenoids have been proposed as an option for a Cooling Channel muons in Muon Collider. can provide the required three main field components: solenoidal, helical dipole, and gradient. In general terms, last two are function of many geometric parameters: coil aperture, radial longitudinal dimensions, helix period orbit radius. this paper, we present design studies Solenoid, addressing tunability limits auxiliary correction system.
Progress on six dimensional ionization muon cooling with relatively small rings of magnets is described. Lattices being explored include scaling sector cyclotrons edge focusing and strong focusing, fixed field alternating gradient (FFAG) rings. Ionization provided by high pressure hydrogen gas which removes both transverse longitudinal momentum. Lost momentum replaced using radio frequency (RF) cavities, giving a net emittance reduction. The longer path length in the higher muons decreases...