299 research outputs found
CW high intensity non-scaling FFAG proton drivers
Accelerators are playing increasingly important roles in basic science,
technology, and medicine including nuclear power, industrial irradiation,
material science, and neutrino production. Proton and light-ion accelerators in
particular have many research, energy and medical applications, providing one
of the most effective treatments for many types of cancer. Ultra high-intensity
and high-energy (GeV) proton drivers are a critical technology for
accelerator-driven sub-critical reactors (ADS) and many HEP programs (Muon
Collider). These high-intensity GeV-range proton drivers are particularly
challenging, encountering duty cycle and space-charge limits in the synchrotron
and machine size concerns in the weaker-focusing cyclotrons; a 10-20 MW proton
driver is not presently considered technically achievable with conventional
re-circulating accelerators. One, as-yet, unexplored re-circulating
accelerator, the Fixed-field Alternating Gradient, or FFAG, is an attractive
alternative to the cyclotron. Its strong focusing optics are expected to
mitigate space charge effects, and a recent innovation in design has coupled
stable tunes with isochronous orbits, making the FFAG capable of
fixed-frequency, CW acceleration, as in the classical cyclotron. This paper
reports on these new advances in FFAG accelerator technology and references
advanced modeling tools for fixed-field accelerators developed for and unique
to the code COSY INFINITY.Comment: 3 pp. Particle Accelerator, 24th Conference (PAC'11) 2011. 28 Mar - 1
Apr 2011. New York, US
The NuMAX Long Baseline Neutrino Factory Concept
A Neutrino Factory where neutrinos of all species are produced in equal
quantities by muon decay is described as a facility at the intensity frontier
for exquisite precision providing ideal conditions for ultimate neutrino
studies and the ideal complement to Long Baseline Facilities like LBNF at
Fermilab. It is foreseen to be built in stages with progressively increasing
complexity and performance, taking advantage of existing or proposed facilities
at an existing laboratory like Fermilab. A tentative layout based on a
recirculating linac providing opportunities for considerable saving is
discussed as well as its possible evolution toward a muon collider if and when
requested by Physics. Tentative parameters of the various stages are presented
as well as the necessary R&D to address the technological issues and
demonstrate their feasibility.Comment: JINST Special Issue on Muon Accelerators. arXiv admin note: text
overlap with arXiv:1308.0494, arXiv:1502.0164
The Ionization Profile Monitors in the Recycler Ring
The ionization profile monitors (IPMs) are used to measure the beam size in
synchrotrons. Both the Fermilab Recycler and Main Injector (MI) machines have
IPMs. However, they were not well understood enough to provide confidence in
their measurements. Accurately measuring beam size through the IPMs was crucial
to recognize the loss mechanisms for accelerators and to keep the beam loss to
a minimum. Thus, performing measurements with different parameters using the
IPMs led to a better analysis on how changes in conditions affect the beam
size. The IPM measurements are compared with that of multi-wires in the
upstream transfer line after applying corrections. The results were compared
with other diagnostics and the change in the beam size for different parameters
are presented in this paper.Comment: 14th International Particle Accelerator Conference (IPAC'23
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Front end energy deposition and collimation studies for IDS-NF
The function of the Neutrino Factory front end is to reduce the energy spread and size of the muon beam to a manageable level that will allow reasonable throughput to subsequent system components. Since the Neutrino Factory is a tertiary machine (protons to pions to muons), there is an issue of large background from the pion-producing target. The implications of energy deposition in the front end lattice for the Neutrino Factory are addressed. Several approaches to mitigating the effect are proposed and discussed, including proton absorbers, chicanes, beam collimation, and shielding
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Simulations of the tapered Guggenheim 6D cooling channel for the Muon Collider
Recent progress in six-dimensional (6D) cooling simulations for the Muon Collider based on the RFOFO ring layout is presented. In order to improve the performance of the cooling channel a tapering scheme is studied that implies changing the parameters such as cell length, magnetic field strength, RF frequency, and the amount of the absorbing material along the cooling channel. This approach allows us to keep the cooling rates high throughout the process. The results of the simulations carried out in G4beamline are presented
ΠΠΈΠΊΡΠΎΡ ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ΅Ρ Π½ΠΈΠΊΠ° ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΡΡΠ°Π½ΡΠΏΠ»Π°Π½ΡΠ°ΡΠΈΠΈ ΠΏΠΎΠ΄ΠΆΠ΅Π»ΡΠ΄ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ ΠΈ ΠΏΠΎΡΠΊΠΈ Π² ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ
ΠΠΠΠΠΠΠ£ΠΠΠ§ΠΠΠ― ΠΠΠΠΠΠ /Ρ
ΠΈΡΠΠΠ§ΠΠ /Ρ
ΠΈΡΠ’Π ΠΠΠ‘ΠΠΠΠΠ’ΠΠ¦ΠΠ―Π°Π»Π»ΠΎΠ³ΡΠ°ΡΡΡ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅Ρ
Π½ΠΈΠΊ
ΠΠΈΠΊΡΠΎΡ ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ΅Ρ Π½ΠΈΠΊΠ° ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΡΡΠ°Π½ΡΠΏΠ»Π°Π½ΡΠ°ΡΠΈΠΈ ΠΏΠΎΠ΄ΠΆΠ΅Π»ΡΠ΄ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ ΠΈ ΠΏΠΎΡΠΊΠΈ Π² ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ
ΠΠΠΠΠΠΠ£ΠΠΠ§ΠΠΠ― ΠΠΠΠΠΠ /Ρ
ΠΈΡΠΠΠ§ΠΠ /Ρ
ΠΈΡΠ’Π ΠΠΠ‘ΠΠΠΠΠ’ΠΠ¦ΠΠ―Π°Π»Π»ΠΎΠ³ΡΠ°ΡΡΡ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅Ρ
Π½ΠΈΠΊ
NuMI Beam Monitoring Simulation and Data Analysis Status and Progress
With the Main Injector Neutrino Oscillation Search (MINOS) experiment decommissioned, muon and hadron monitors became an important diagnostic tool for the NuMI Off-axis v Appearance (NOvA) experiment at Fermilab to monitor the Neutrinos at the Main Injector (NuMI) beam. The goal of this study is to maintain the quality of the monitor signals and to establish correlations with the neutrino beam profile. And we carry out a systematic study of the response of the muon monitors to the changes in the parameters of the proton beam and lattice parameters. We report here on the progress of the beam data analysis and comparison with the simulation results
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