G4beamline simulation program for matter-dominated beamlines
25 Jun 2007-pp 3468-3470
TL;DR: G4beamline as mentioned in this paper is a single-particle simulation program optimized for the design and evaluation of beam lines, which is based on the Geant4 toolkit and can implement accurate and realistic simulations of particle transport in both EM fields and matter.
Abstract: G4beamline is a single-particle simulation program optimized for the design and evaluation of beam lines. It is based on the Geant4 toolkit, and can implement accurate and realistic simulations of particle transport in both EM fields and matter. This makes it particularly well suited for studies of muon collider and neutrino factory design concepts. G4beamline includes a rich repertoire of beamline elements and is intended to be used directly, without C++ programming, by accelerator physicists. The program has been enhanced to handle a large class of beamline and detector systems, and is available on Linux, Windows, and Macintosh platforms.
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TL;DR: The results set the stage for the development of future multi-staged DLA devices composed of integrated on-chip systems, and would substantially reduce the size and cost of a future collider on the multi-TeV (1012 eV) scale.
Abstract: Acceleration of relativistic electrons in a dielectric laser accelerator at high electric field gradients is reported, setting the stage for the development of future multi-staged accelerators of this type. Conventional particle accelerators, based on radio-frequency technology, are large-scale installations that are expensive to run. Micro-fabricated dielectric laser accelerators (DLAs) offer an attractive alternative, as they are able to support much larger accelerating fields than current accelerators, while being compact, economical and simple to manufacture using lithographic techniques. This paper presents the first experimental demonstration of a DLA capable of sustained, high-gradient (beyond 250 MeV m−1) acceleration of relativistic electrons. The results set the stage for the development of future multi-staged DLA devices composed of integrated on-chip systems, which would enable compact table-top MeV–GeV-scale accelerators. Applications include security scanners and medical therapy, X-ray light sources for biological and materials research, and portable medical imaging devices. The enormous size and cost of current state-of-the-art accelerators based on conventional radio-frequency technology has spawned great interest in the development of new acceleration concepts that are more compact and economical. Micro-fabricated dielectric laser accelerators (DLAs) are an attractive approach, because such dielectric microstructures can support accelerating fields one to two orders of magnitude higher than can radio-frequency cavity-based accelerators. DLAs use commercial lasers as a power source, which are smaller and less expensive than the radio-frequency klystrons that power today’s accelerators. In addition, DLAs are fabricated via low-cost, lithographic techniques that can be used for mass production. However, despite several DLA structures having been proposed recently1,2,3,4, no successful demonstration of acceleration in these structures has so far been shown. Here we report high-gradient (beyond 250 MeV m−1) acceleration of electrons in a DLA. Relativistic (60-MeV) electrons are energy-modulated over 563 ± 104 optical periods of a fused silica grating structure, powered by a 800-nm-wavelength mode-locked Ti:sapphire laser. The observed results are in agreement with analytical models and electrodynamic simulations. By comparison, conventional modern linear accelerators operate at gradients of 10–30 MeV m−1, and the first linear radio-frequency cavity accelerator was ten radio-frequency periods (one metre) long with a gradient of approximately 1.6 MeV m−1 (ref. 5). Our results set the stage for the development of future multi-staged DLA devices composed of integrated on-chip systems. This would enable compact table-top accelerators on the MeV–GeV (106–109 eV) scale for security scanners and medical therapy, university-scale X-ray light sources for biological and materials research, and portable medical imaging devices, and would substantially reduce the size and cost of a future collider on the multi-TeV (1012 eV) scale.
437 citations
Posted Content•
TL;DR: Alexahin et al. as mentioned in this paper proposed the construction of a compact Muon Collider s-channel Higgs Factory, and described in detail the construction and operation of the Higgs Facility.
Abstract: Author(s): Alexahin, Yuri; Ankenbrandt, Charles M; Cline, David B; Conway, Alexander; Cummings, Mary Anne; Benedetto, Vito Di; Eichten, Estia; Gatto, Corrado; Grinstein, Benjamin; Gunion, Jack; Han, Tao; Hanson, Gail; Hill, Christopher T; Ignatov, Fedor; Johnson, Rolland P; Lebedev, Valeri; Lipton, Ron; Liu, Zhen; Markiewicz, Tom; Mazzacane, Anna; Mokhov, Nikolai; Nagaitsev, Sergei; Neuffer, David; Palmer, Mark; Purohit, Milind V; Raja, Rajendran; Striganov, Sergei; Summers, Don; Terentiev, Nikolai; Wenzel, Hans | Abstract: We propose the construction of, and describe in detail, a compact Muon Collider s-channel Higgs Factory.
40 citations
Fermilab1, Yale University2, University of Texas at Arlington3, Syracuse University4, Universidade Federal de Goiás5, Boston University6, University of Chicago7, Michigan State University8, State University of Campinas9, Universidade Federal de Alfenas10, University of Minnesota11, University of Manchester12, University of Texas at Austin13, University of Granada14, University College London15, Louisiana State University16, University of Cincinnati17, Chiba University18, College of William & Mary19, Universidade Federal do ABC20, University of Rochester21, Vanderbilt University22, University of Oxford23
TL;DR: The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples of pions, muons, electrons, protons, and kaons in the momentum range 0∼30-0140 MeV/c as discussed by the authors.
Abstract: The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples of pions, muons, electrons, protons, and kaons in the momentum range 0∼30–0140 MeV/c. This paper describes the main aspects of the detector and beamline, and also reports on calibrations performed for the detector and beamline components.
32 citations
TL;DR: The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples of pions, muons, electrons, protons, and kaons in the momentum range 300-1400 MeV/c as mentioned in this paper.
Abstract: The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples of pions, muons, electrons, protons, and kaons in the momentum range 300-1400 MeV/c. This paper describes the main aspects of the detector and beamline, and also reports on calibrations performed for the detector and beamline components.
25 citations
01 Jan 2018
TL;DR: In this paper, single-particle amplitude and nonparametric statistics were used to estimate the phase space density function for the first demonstration of ionization cooling through a 65 mm-thick lithium hydride absorber.
Abstract: The Muon Ionization Cooling Experiment (MICE) collaboration seeks to demonstrate the feasibility of ionization cooling, the technique by which it is proposed to cool the muon beam at a future neutrino factory or muon collider. The position and momentum reconstruction of individual muons in the MICE trackers allows for the development of alternative figures of merit in addition to beam emittance. Contraction of the phase space volume occupied by a fraction of the sample, or equivalently the increase in phase space density at its core, is an unequivocal cooling signature. Single-particle amplitude and nonparametric statistics provide reliable methods to estimate the phase space density function. These techniques are robust to transmission losses and nonlinearities, making them optimally suited to perform quantitative measurements in MICE. These novel methods were developed for this thesis and used for the first demonstration of muon ionization cooling through a 65 mm-thick lithium hydride absorber.
24 citations