David Neuffer
A5050281486- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Neutrino Physics Research
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Laser-Plasma Interactions and Diagnostics
- Dark Matter and Cosmic Phenomena
- Photocathodes and Microchannel Plates
- Electrostatic Discharge in Electronics
- Plasma Diagnostics and Applications
- Scientific Research and Discoveries
- High-Energy Particle Collisions Research
- Atomic and Molecular Physics
- Advancements in Photolithography Techniques
- Engineering Applied Research
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- Radiation Therapy and Dosimetry
- Quantum Chromodynamics and Particle Interactions
- Medical Imaging Techniques and Applications
Fermi National Accelerator Laboratory
2015-2024
Fermi Research Alliance
2002-2018
University of Mississippi
2017
University of California, Riverside
2016
Brookhaven National Laboratory
1996-2015
Illinois Institute of Technology
2012-2014
Rutherford Appleton Laboratory
2013
Muons (United States)
2010
University of Massachusetts Amherst
2007
Syracuse University
2007
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...
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.
This document summarizes the work of Accelerator Working Group (AWG) International Scoping Study (ISS) a Future Neutrino Factory and Superbeam Facility. The main goal activity was to reach consensus on baseline design for complex, including proton driver parameters, choice target, front-end design, acceleration system decay ring geometry. Another explore commonality, if any, between those or Beta Beam facility. In general, requirements either latter facilities are less stringent than...
Calculations are presented of the $E1$ amplitude expected in $6^{2}P_{\frac{1}{2}}\ensuremath{-}7^{2}P_{\frac{1}{2}}$ forbidden $M1$ transition Tl if parity conservation is violated neutral weak $e\ensuremath{-}N$ interaction, as proposed a number gauge models, including that Weinberg and Salam. Valence-electron wave functions generated numerical solutions to Dirac equation modified Tietz central potential. These used calculate allowed oscillator strengths, hfs splittings, Stark amplitudes....
A facility that can deliver beams of electron and muon neutrinos from the decay a stored beam has potential to unambiguously resolve issue evidence for light sterile arises in short-baseline neutrino oscillation experiments estimates effective number flavors fits cosmological data. In this paper, we show nuSTORM facility, with muons $3.8\text{ }\mathrm{GeV}/\mathrm{c}\text{ }\ifmmode\pm\else\textpm\fi{}\text{ }10%$, will be able carry out conclusive appearance search test LSND MiniBooNE...
A staged approach towards muon based facilities for Intensity and Energy Frontier science, building upon existing proposed at Fermilab, is presented. At each stage, a facility exploring new physics also provides an R&D platform to validate the technology needed subsequent stages. The envisioned program begins with nuSTORM, sensitive sterile neutrino search which precision cross-section measurements while developing of using cooling muons. Neutrino Factory Project X, sending beams Sanford...
Part 2 of "Project X: Accelerator Reference Design, Physics Opportunities, Broader Impacts". In this Part, we outline the particle-physics program that can be achieved with Project X, a staged superconducting linac for intensity-frontier particle physics. Topics include neutrino physics, kaon muon electric dipole moments, neutron-antineutron oscillations, new light particles, hadron structure, spectroscopy, and lattice-QCD calculations. 1 is available as arXiv:1306.5022 [physics.acc-ph] 3...
Many applications of particle acceleration, such as heavy ion fusion, require longitudinal bunching a high intensity beam to extremely currents with correspondingly space charge forces. This requires precise analysis motion including stability analysis. Previous papers have treated the force strictly linear, and not been self-consistent; that is, they displayed phase distribution consistent this linear so transport could be followed, departures from linearity analyzed. is unlike situation...
We propose the construction of, and describe in detail, a compact Muon Collider s-channel Higgs Factory.
The possibility that muons may be used in a future generation of high‐energy high‐luminosity μ+ μ− and μ‐p colliders is presented. problem collecting cooling high‐intensity muon bunches discussed ionization described. High‐energy collider scenarios are outlined; become superior to electron the multi‐TeV energy range.
In the neutrino factory, muons are produced by firing high-energy protons onto a target to produce pions. The pions decay and pass through capture channel known as muon front end, before acceleration 12.6 GeV. end comprises variable frequency rf system for longitudinal an ionization cooling channel. this paper we detail recent improvements in design of end.
A novel single-particle technique to measure emittance has been developed and used characterise seventeen different muon beams for the Muon Ionisation Cooling Experiment (MICE). The beams, whose mean momenta vary from 171 281 MeV/c, have emittances of approximately 1.5--2.3 \pi mm-rad horizontally 0.6--1.0 vertically, a horizontal dispersion 90--190 mm momentum spreads about 25 MeV/c. There is reasonable agreement between measured parameters results simulations. are found meet requirements MICE.
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 \mumu 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. Problems detector background also discussed.
We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize increased proton intensity provided by Fermilab PIP-II upgrade to improve sensitivity for neutrinoless muon-to-electron conversion one order magnitude beyond providing deepest probe charged lepton flavor violation foreseeable future. Mu2e-II will use as much infrastructure possible, providing, where required, improvements apparatus accommodate beam cope with...
We discuss the technical feasibility, key machine parameters and major challenges of a 14 TeV c.m.e. muon-muon collider in LHC tunnel. The luminosity is evaluated for three alternative muon sources—the PS synchrotron, one type developed by US Muon Accelerator Program (MAP) low-emittance option based on resonant pair production. Project affordability also discussed.
Muon beams are generated with large transverse and longitudinal emittances. In order to achieve the low emittances required by a muon collider, within short lifetime of muons, ionization cooling is required. Cooling schemes have been developed reduce beam 6D $\ensuremath{\approx}300\text{ }\text{ }\ensuremath{\mu}\mathrm{m}\text{\ensuremath{-}}\mathrm{rad}$ in $\ensuremath{\approx}1--1.5\text{ }\mathrm{mm}$ dimensions. The emittance has be further reduced $\ensuremath{\approx}50--25\text{ an...
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...