A5065900068- Particle accelerators and beam dynamics
- Particle physics theoretical and experimental studies
- Muon and positron interactions and applications
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Gyrotron and Vacuum Electronics Research
- Electrostatic Discharge in Electronics
- Plasma Diagnostics and Applications
- Quantum Chromodynamics and Particle Interactions
- Pulsars and Gravitational Waves Research
- Nuclear Physics and Applications
- Magnetic confinement fusion research
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- X-ray Spectroscopy and Fluorescence Analysis
- Ion-surface interactions and analysis
- Photocathodes and Microchannel Plates
- Nuclear reactor physics and engineering
- Advanced Data Storage Technologies
IIT Research Institute
2010-2025
Illinois Institute of Technology
2016-2025
Banaras Hindu University
2023-2024
California Institute of Technology
2023-2024
Cochin University of Science and Technology
2023-2024
Charles University
2023-2024
Imperial College London
2015-2017
National United University
2012-2015
University of Strathclyde
2015
Daresbury Laboratory
2015
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...
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...
We present measurements of dark currents and x rays in a six cell 805 MHz cavity, taken as part an rf development program for muon cooling, which requires high power, stored energy, low frequency cavities operating strong magnetic field. have done the first systematic study behavior power (2.5--4 T) Our extend over very large dynamic range current provide good fits to Fowler-Nordheim field emission model assuming mechanical structures produce enhancements at surface. The locally enhanced...
We have measured the effects of high (0--4.5 T) magnetic fields on operating conditions 805 MHz accelerating cavities, and discovered that maximum gradient drops as a function axial field. While any cavity is governed by number factors including conditioning, surface topology materials, we argue $\mathbf{J}\ifmmode\times\else\texttimes\fi{}\mathbf{B}$ forces within emitters are mechanism for enhanced breakdown in fields. The pattern changes over time show an example bright emitter which...
An analysis of inclusive pion production in proton-beryllium collisions at 6.4, 12.3, and 17.5 GeV/$c$ proton beam momentum has been performed. The data were taken by Experiment 910 the Alternating Gradient Synchrotron Brookhaven National Laboratory. differential ${\ensuremath{\pi}}^{+}$ ${\ensuremath{\pi}}^{\ensuremath{-}}$ cross sections (${d}^{2}\ensuremath{\sigma}/\mathit{dpd}\ensuremath{\Omega}$) measured up to 400 mrad ${\ensuremath{\theta}}_{\ensuremath{\pi}}$ 6...
The fixed-target MIPP experiment, Fermilab E907, was designed to measure the production of hadrons from collisions momenta ranging 5 120 GeV/c on a variety nuclei. These data will generally improve simulation particle detectors and predictions beam fluxes at accelerators. spectrometer momentum resolution is between 3 4%, identification performed for particles 0.3 80 using $dE/dx$, time-of-flight Cherenkov radiation measurements. collected $1.42 \times10^6$ events GeV Main Injector protons...
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 describe a model of damage in rf cavities and show how this can limit cavity operation. first present review mechanisms that may or not affect the ultimate fields be obtained cavities, assuming mechanical stress explains triggers breakdown events. method quantifying surface caused by events terms spectrum field enhancement factors, $\ensuremath{\beta}$, for asperities on surface. then an equilibrium develop between conditioning effects, determine performance experimental evidence...
A major technological challenge in building a muon cooling channel is operating rf cavities multitesla external magnetic fields. We report the first proof-of-principle experiment of high pressure gas-filled cavity for use with intense ionizing beams and strong power consumption by beam-induced plasma investigated hydrogen deuterium gases pressures between 20 100 atm peak gradients 5 $50\text{ }\text{ }\mathrm{MV}/\mathrm{m}$. The low case agrees well an analytical model based on electron ion...
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...
Differential cross sections are presented for the inclusive production of charged pions in momentum range 0.1–1.2GeV/c interactions 12.3 and 17.5GeV/c protons with Be, Cu, Au targets. The measurements were made by Experiment 910 at Alternating Gradient Synchrotron (AGS) Brookhaven National Laboratory. as a function pion total polar angle θ respect to beam.Received 5 August 2001DOI:https://doi.org/10.1103/PhysRevC.65.024904©2002 American Physical Society
We have measured cross sections for forward neutron production from a variety of targets using proton beams the Fermilab Main Injector. Measurements were performed beam momenta 58, 84, and $120\text{ }\text{ }\mathrm{GeV}/c$. The section dependence on atomic weight ($A$) was found to vary as ${A}^{\ensuremath{\alpha}}$, where $\ensuremath{\alpha}$ is $0.46\ifmmode\pm\else\textpm\fi{}0.06$ momentum $58\text{ }\mathrm{GeV}/c$ $0.54\ifmmode\pm\else\textpm\fi{}0.05$ show reasonable agreement...
A muon collider or Higgs factory requires significant reduction of the six dimensional emittance beam prior to acceleration. One method accomplish this involves building a cooling channel using high pressure gas filled radio frequency cavities. The performance such cavity when subjected an intense particle must be investigated before technology can validated. To end, (rf) test cell was built and placed in 400 MeV line from Fermilab linac study plasma evolution its effect on cavity. Hydrogen,...
Experiment E910 has measured slow protons and deuterons from collisions of 18 GeV/c with Be, Cu, Au targets at the BNL AGS. These correspond to “grey tracks” first observed in emulsion experiments. We report on their momentum angular distributions investigate use measuring centrality a collision, as defined by mean number projectile-nucleon interactions. The relation between Ngrey interactions ν¯(Ngrey) is studied using several simple models, one newly proposed, well RQMD event generator....
The MuCool Experiment has been continuing to take data with 805 and 201 MHz cavities in the Test Area. system uses RF power sources from Fermilab Linac. Although experimental program is primarily aimed at Muon Ionization Cooling (MICE), we have studying dependence of limits on frequency, cavity material, high magnetic fields, gas pressure, coatings, etc. general aim understanding basic mechanisms involved. cavity, essentially a prototype for MICE, was made using cleaning techniques similar...
A first electropolished 201-MHz RF cavity for the international Muon Ionization Cooling Experiment (MICE) has been assembled inside a special vacuum vessel and installed at Fermilab’s MuCool Test Area (MTA). The MTA hall have equipped with numerous instrumentation to characterize operation. commissioned run 14 MV/m gradient no external magnetic field; it is also being in presence of fringe field multiTesla superconducting solenoid magnet, condition which modules will be operated MICE cooling...
Ionization cooling is the preferred method for producing bright muon beams. This technique requires operation of normal conducting, radio-frequency (rf) accelerating cavities within multi-tesla fields dc solenoid magnets. Under these conditions, exhibit increased susceptibility to rf breakdown, which can damage channel components and imposes limits on length transmission efficiency. We report, first time, stable high-vacuum, normal-conducting cavity at gradients $50\text{ }\text{...
The MuCool Test Area (MTA) at Fermilab is a facility to develop the technology required for ionization cooling future Muon Collider and/or Neutrino Factory. As part of this research program, feasibility studies various types RF cavities in high magnetic field environment are progress. unique approach, we have tested cavity filled with pressure hydrogen gas 400 MeV proton beam an external (B = 3 T). Quantitative information about number protons passing through essential requirement test. MTA...
The Muon Ionization Cooling Experiment (MICE) collaboration has developed the MICE Analysis User Software (MAUS) to simulate and analyze experimental data. It serves as primary codebase for experiment, providing offline batch simulation reconstruction well online data quality checks. software provides both traditional particle-physics functionalities such track particle identification, accelerator physics functions, calculating transfer matrices emittances. code design is object orientated,...