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Optimization Of Extinction Efficiency In The 8 Gev Mu2e Beam Line
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Book Synopsis Optimization of Extinction Efficiency in the 8-GeV Mu2e Beam Line by :
Download or read book Optimization of Extinction Efficiency in the 8-GeV Mu2e Beam Line written by and published by . This book was released on 2012 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A muon-to-electron conversion experiment at Fermilab, Mu2e, is being designed to probe for new physics beyond the standard model at mass scales up to 104 TeV. For this experiment, the advance in experimental sensitivity will be four orders of magnitude when compared to existing data on charged lepton flavor violation. The muon beam will be produced by delivering a proton beam contained in short 100-ns bunches onto a muon production target, with an inter-bunch separation of about 1700 ns. A critical requirement of the experiment is to ensure a low level of background at the muon detector consistent with the required sensitivity. To meet the sensitivity requirement, protons that reach the target between bunches must be suppressed by an enormous factor, so that an extinction factor, defined as a number of background protons between main bunches per proton in such a bunch, should not exceed 10−9. This paper describes the advanced beam optics and results of numerical modeling with STRUCT and MARS codes for a beam line with a collimation system that allows us to achieve the experimental extinction factor of one per billion.
Book Synopsis Optimization of AC Dipole Parameters for the Mu2e Extinction System by :
Download or read book Optimization of AC Dipole Parameters for the Mu2e Extinction System written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mu2e experiment is being planned at Fermilab to measure the rate for muons to convert to electrons in the field of an atomic nucleus with unprecedented precision. This experiment uses an 8 GeV primary proton beam consisting of short (H"00 nsec FW) bunches, separated by 1.7?sec. It is vital that out-of-bunch beam be suppressed at the level of 10−1° or less. This poster describes the parametric analysis which was done to determine the optimum harmonics and magnet specifications for this system, as well as the implications for the beam line optics.
Book Synopsis 8 GeV Beam Line Optics Optimization for the Rapid Antiproton Transfers at Fermilab by :
Download or read book 8 GeV Beam Line Optics Optimization for the Rapid Antiproton Transfers at Fermilab written by and published by . This book was released on 2007 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tevatron Run-II upgrade requires a significant increase of the efficiency and speed of the antiproton transfers from the Accumulator to the Recycler. The goal for the total transfer time is challenging a reduction from 1 hour down to a few minutes. Here we discuss the beam line optics aspects of this project. Results of lattice measurements and optimization are analyzed in terms of transport efficiency and stability.
Book Synopsis Beam Extinction Monitor Design Optimization and Performance Studies for the Mu2e Experiment by : Elizabeth Klara Marie Heckmaier
Download or read book Beam Extinction Monitor Design Optimization and Performance Studies for the Mu2e Experiment written by Elizabeth Klara Marie Heckmaier and published by . This book was released on 2013 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proposed Mu2e experiment at the future muon campus at the Fermi National Accelerator Laboratory is designed to probe for new physics (in particular, muon to electron conversion) at the intensity frontier. Mu2e is designed to observe and measure charged lepton flavor violation (CLFV) via muon capture (u ̄ + N(Z) [arrow right] e ̄+ N(Z)) at an event sensitivity of approximately 5.4 x 10−17 on a 90% confidence interval. Achieving this level of sensitivity necessitates a beam extinction monitor to detect secondary particles indicative of out of time (OoT) beam protons. If the beam extinction exceeds the design value of 10−10, prompt background levels will not be adequately suppressed to achieve the desired event sensitivity. A series of Monte Carlo simulations were performed to study the extinction monitor's ability to record OoT events as well as its sensitivity to misalignment during the construction of the experiment. Additionally, various extinction monitor geometry changes were implemented within Geant4 to measure and minimize the effects of damaging radiation on crucial detector elements. Independent analysis of these simulations indicate the nominal extinction monitor design meets the Mu2e experiment's requirements. Minimal design changes substantially mitigate the effects of harmful radiation damage and provide for a more robust detector-maximizing the extinction monitor's lifetime with hardware replacement on the order of approximately once a year, while minimizing operational cost and experiment downtime.
Book Synopsis Research and Development for the Mu2e Extinction Monitor by :
Download or read book Research and Development for the Mu2e Extinction Monitor written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mu2e is a planned experiment to search for flavor violating conversion from a muon to an electron. The experiment will use a pulsed 8 GeV proton beam to produce muons which will then stop in an aluminum target. Mu2e will search for the $\mu^- + Al \rightarrow e^- + Al$ process. For Mu2e, an extinction rate of 10$^{-10}$ is required to reduce the backgrounds to an acceptable level. Extinction is the ratio of the amount of protons striking the production target between beam pulses to the number striking it during the beam pulse. One of the backgrounds, off-target interactions, was simulated using G4beamline and Fermilab's Grid setup to confirm that an extinction rate of 10$^{-10}$ is possible. The extinction level will be measured by the extinction monitor which will include scintillation counters read out by photomultiplier tubes. In order to build a beam time profile, low fake responses (after pulses) are needed in the photomultiplier tubes. This thesis determines the best co mbination of resistors, voltage, and other components that provide the lowest after pulse rate.
Book Synopsis Research and Development for the Mu2E Extinction Monitor by : Casey B. Mott
Download or read book Research and Development for the Mu2E Extinction Monitor written by Casey B. Mott and published by . This book was released on 2016 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mu2e is a planned experiment to search for flavor violating conversion from a muon to an electron. The experiment will use a pulsed 8 GeV proton beam to produce muons which will then stop in an aluminum target. Mu2e will search for the mu-- + Al → e-- + Al process. For Mu2e, an extinction rate of 10--10 is required to reduce the backgrounds to an acceptable level. Extinction is the ratio of the amount of protons striking the production target between beam pulses to the number striking it during the beam pulse. One of the backgrounds, off-target interactions, was simulated using G4beamline and Fermilab's Grid setup to confirm that an extinction rate of 10--10 is possible. The extinction level will be measured by the extinction monitor which will include scintillation counters read out by photomultiplier tubes. In order to build a beam time profile, low fake responses (after pulses) are needed in the photomultiplier tubes. This thesis determines the best combination of resistors, voltage, and other components that provide the lowest after pulse rate.
Book Synopsis An Estimate of Out of Time Beam Upon Extraction for Mu2e by :
Download or read book An Estimate of Out of Time Beam Upon Extraction for Mu2e written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For future experiments at the intensity frontier precise and accurate knowledge of beam time structure will be critical to understanding backgrounds. The proposed Mu2e experiment calls for ≈ 200ns (FW, 40 ns rms) bunches of 3 x 107 8 GeV protons and a bunch spacing of 1695 ns. The interbunch beam must be suppressed from the main pulse by a factor of 10−1°, this is known as the beam extinction requirement. Beam from Fermilab's Booster will be formed into 2.5 MHz buckets in the Fermilab Recycler then transferred to the Delivery Ring (formerly the Debuncher) and slow spilled from a single filled bucket in an h = 4 RF system. Because the final extinction level is not expected from the Delivery Ring an AC dipole and collimation system will be used to achieve final extinction. Here I present calculations leading to a first estimate of the extinction level expected upon extraction from the Delivery Ring of ≤ 3.36 x 10−4. Intrabunch, residual gas scattering and scattering off the extraction septum are included. Contributions from bunch formation are not considered.
Book Synopsis Out-of-Time Beam Extinction in the MU2E Experiment by :
Download or read book Out-of-Time Beam Extinction in the MU2E Experiment written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mu2e Experiment at Fermilab will search for the conversion of a muon to an electron in the field of an atomic nucleus with unprecedented sensitivity. The experiment requires a beam consisting of proton bunches 250 ns FW long, separated by 1.7 $\mu$ sec, with no out-of-time protons at the $10^$ fractional level. Satisfying this "extinction" requirement is very challenging. The formation of the bunches is expected to result in an extinction on the order of $10^5$. The remaining extinction will be accomplished by a system of resonant magnets and collimators, configured such that only in-time beam is delivered to the experiment. Our simulations show that the total extinction achievable by the system is on the order of $10^$, with an efficiency for transmitting in-time beam of 99.6%.
Book Synopsis Beam Extinction Monitoring in the Mu2e Experiment by :
Download or read book Beam Extinction Monitoring in the Mu2e Experiment written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mu2e Experiment at Fermilab will search for the conversion of a muon to an electron in the field of an atomic nucleus with unprecedented sensitivity. The experiment requires a beam consisting of proton bunches approximately 200ns FW long, separated by 1.7 microseconds, with no out-of-time protons at the 10−10 fractional level. The verification of this level of extinction is very challenging. The proposed technique uses a special purpose spectrometer which will observe particles scattered from the production target of the experiment. The acceptance will be limited such that there will be no saturation effects from the in-time beam. The precise level and profile of the out-of-time beam can then be built up statistically, by integrating over many bunches.
Book Synopsis Precision Monitoring of Relative Beam Intensity for Mu2e by :
Download or read book Precision Monitoring of Relative Beam Intensity for Mu2e written by and published by . This book was released on 2011 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: For future experiments at the intensity frontier, precise and accurate knowledge of beam time structure will be critical to understanding backgrounds. The proposed Mu2e experiment will utilize ≈200 ns (FW) bunches of 3 x 107 protons at 8 GeV with a bunch-to-bunch period of 1695 ns. The out-of-bunch beam must be suppressed by a factor of 10−1° relative to in-bunch beam and continuously monitored. I propose a Cerenkov-based particle telescope to measure secondary production from beam interactions in a several tens of microns thick foil. Correlating timing information with beam passage will allow the determination of relative beam intensity to arbitrary precision given a sufficiently long integration time. The goal is to verify out-of-bunch extinction to the level 10−6 in the span of several seconds. This will allow near real-time monitoring of the initial extinction of the beam resonantly extracted from Fermilabs Debuncher before a system of AC dipoles and collimators, which will provide the final extinction. The effect on beam emittance is minimal, allowing the necessary continuous measurement. I will present the detector design and some concerns about bunch growth during the resonant extraction.
Book Synopsis Electroweak Symmetry Breaking - Proceedings Of The Budapest Workshop by : Ferenc Csikor
Download or read book Electroweak Symmetry Breaking - Proceedings Of The Budapest Workshop written by Ferenc Csikor and published by World Scientific. This book was released on 1995-04-26 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the talks given at the above workshop which was devoted to discussing the newest developments in various models of electroweak symmetry breaking forming the basis of modern particle physics. It includes various aspects of Higgs physics and condensate models embodying dynamical symmetry breaking.
Book Synopsis Optical Materials Characterization by : Albert Feldman
Download or read book Optical Materials Characterization written by Albert Feldman and published by . This book was released on 1979 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Beam Acceleration In Crystals And Nanostructures - Proceedings Of The Workshop by : Gerard Mourou
Download or read book Beam Acceleration In Crystals And Nanostructures - Proceedings Of The Workshop written by Gerard Mourou and published by . This book was released on 2020 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accelerator Instrumentation by : Edward R. Beadle
Download or read book Accelerator Instrumentation written by Edward R. Beadle and published by American Institute of Physics. This book was released on 1990 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Massive Neutrinos by : Orrin Fackler
Download or read book Massive Neutrinos written by Orrin Fackler and published by Atlantica Séguier Frontières. This book was released on 1991 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pegasus® Wing-glove Experiment to Document Hypersonic Crossflow Transition by : Arild Bertelrud
Download or read book Pegasus® Wing-glove Experiment to Document Hypersonic Crossflow Transition written by Arild Bertelrud and published by . This book was released on 2000 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a recent flight experiment to study hypersonic crossflow transition, boundary layer characteristics were documented. A smooth steel glove was mounted on the first stage delta wing of Orbital Sciences Corporation's Pegasus® launch vehicle and was flown at speeds of up to Mach 8 and altitudes of up to 250,000 ft. The wing-glove experiment was flown as a secondary payload off the coast of Florida in October 1998. This paper describes the measurement system developed. Samples of the results obtained for different parts of the trajectory are included to show the characteristics and quality of the data. Thermocouples and pressure sensors (including Preston tubes, Stanton tubes, and a "probeless" pressure rake showing boundary layer profiles) measured the time-averaged flow. Surface hot-films and high-frequency pressure transducers measured flow dynamics. Because the vehicle was not recoverable, it was necessary to design a system for real-time onboard processing and transmission. Onboard processing included spectral averaging. The quality and consistency of data obtained was good and met the experiment requirements.
Download or read book Heavy Flavours written by A J Buras and published by World Scientific. This book was released on 1992-11-26 with total page 803 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a collection of review articles on the most outstanding topics in heavy flavour physics. All the authors have made significant contributions to this field. The book reviews in detail the theoretical structure of heavy flavour physics within the Standard Model and its confrontation with existing experimental data.The physics of the top quark and of the Higgs play an important role in this volume. Beginning with radiative electroweak corrections and their impressive tests at LEP and hadron colliders, the book summarizes the present status of quark mixing, CP violation and rare decays. The dynamics of exclusive D- and B-meson decays, the τ-lepton physics and the newly discovered heavy quark symmetries are discussed in detail. The impact of strong interactions on weak decays is clearly visible in many articles. The physics of heavy flavours at LEP, HERA and hadron colliders constitutes an important part of the book. Another significant topic is the possible role of heavy flavours in the spontaneous symmetry breaking of gauge symmetries. Finally the most recent advances in lattice calculations of the properties of heavy flavours and the lattice studies of the dynamics of heavy flavours are presented.
