Download or read book Optimization of Muon Injection and Storage in the Fermilab G 2 Experiment written by Nathan Seth Froemming and published by . This book was released on 2018 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anomaly of the muon magnetic dipole moment, a[subscript mu] [triple bar] (g[subscript mu] -2)/2, is a sensitive probe into the Standard Model (SM) of particle physics because it can be calculated with high precision and also measured with high precision. Comparison of the experimental and theoretical values of a[subscript mu] therefore provides a stringent test of the completeness of the Standard Model, with any deviation suggesting the existence of new physics as a possible explanation. The most recent experimental determination of a[subscript mu] was performed by the E821 collaboration at Brookhaven National Laboratory (BNL) from 1997--2001, where a final precision of [delta]a[subscript mu]/a[subscript mu] = ±540 was achieved. The value of a[subscript mu] obtained by E821 presently differs from the SM prediction by 3.5--4.0 standard deviations, hinting strongly---albeit inconclusively---of the existence of new physics. The BNL experiment was limited by statistics. A next-generation experiment at Fermi National Accelerator Laboratory (Fermilab), which utilizes the same BNL storage-ring magnet with many significant upgrades, aims to measure a[subscript mu] to a final precision of 140ppb, thus helping to resolve the discrepancy between experiment and theory once and for all. The new Fermilab measurement of a[subscript mu] requires approximately ~20X the entire BNL dataset to be recorded and analyzed, a difficult task. Therefore, optimization of the muon injection efficiency, capture fraction, and stored-muon beam properties are critical requirements for completing the new measurement in a timely manner with the required precision. These topics are the subject of this thesis.
Download or read book The Slow Control System for the Fermilab Muon G 2 E989 Experiment written by Michael McEvoy and published by . This book was released on 2016 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: The New Muon g-2 experiment (E989) at Fermilab will measure the muon anomalous magnetic moment, amu. E989 aims to measure amu to a precision of 0.14 parts-per-million, a factor of four improvement over the previous experimental measurement. The muon storage ring magnet was previously used in experiment E821 at Brookhaven National Laboratory. It was moved to Fermilab in order to attempt to improve the value of amu by utilizing Fermilab's higher energy proton source, the Main Injector. The storage region is filled with a highly precise magnetic field created by the superconducting coils surrounded by steel yokes. The muons are injected into the ring and kicked into a circular orbit and then decay into positrons and neutrinos. The positrons contain the same spin information as the parent muon and precess about the magnetic field. The tracking detector and calorimeter systems combine to measure the spin precession frequency oa and the magnetic field team will measure the average magnetic field felt by the muons. This paper will focus on the slow control system and environmental parameter monitoring of the MC-1 experimental hall, with initial focus on the temperature. This paper will also target the assembly and testing of the straw leak testing apparatus.
Download or read book Status of the Fermilab Muon g 2 Experiment written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The New Muon (g-2) Collaboration at Fermilab has proposed to measure the anomalous magnetic moment of the muon, a{sub {mu}}, a factor of four better than was done in E821 at the Brookhaven AGS, which obtained a{sub {mu}} = [116592089(63)] x 10−11 ± 0.54 ppm. The last digit of a{sub {mu}} is changed from the published value owing to a new value of the ratio of the muon-to-proton magnetic moment that has become available. At present there appears to be a difference between the Standard-Model value and the measured value, at the ≈= 3 standard deviation level when electron-positron annihilation data are used to determine the lowest-order hadronic piece of the Standard Model contribution. The improved experiment, along with further advances in the determination of the hadronic contribution, should clarify this difference. Because of its ability to constrain the interpretation of discoveries made at the LHC, the improved measurement will be of significant value, whatever discoveries may come from the LHC.
Download or read book The Anomalous Magnetic Moment of the Muon written by Friedrich Jegerlehner and published by Springer. This book was released on 2017-08-17 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research monograph covers extensively the theory of the muon anomalous magnetic moment and provides estimates of the theoretical uncertainties. The muon anomalous magnetic moment is one of the most precisely measured quantities in elementary particle physics and provides one of the most stringent tests of relativistic quantum field theory as a fundamental theoretical framework. It allows for an extremely precise check of the standard model of elementary particles and of its limitations. This book reviews the present state of knowledge of the anomalous magnetic moment a=(g-2)/2 of the muon. Recent experiments at the Brookhaven National Laboratory now reach the unbelievable precision of 0.5 parts per million, improving the accuracy of previous g-2 experiments at CERN by a factor of 14. In addition, quantum electrodynamics and electroweak and hadronic effects are reviewed. Since non-perturbative hadronic effects play a key role for the precision test, their evaluation is described in detail. Perspectives for future improvements of the theoretical and experimental precision are considered. The new edition features improved theoretical predictions to match upcoming experiments, like the one at Fermilab. Additionally the new more precise basic parameters are presented.
Download or read book Overview of the Fermilab Muon G 2 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 measurement of the anomalous magnetic moment of muon provides a precision test of the Standard Model. The Brookhaven muon g-2 experiment (E821) measured the muon magnetic moment anomaly with 0.54 ppm precision, a more than 3 deviation from the Standard Model predictions, spurring speculation about the possibility of new physics. The new g-2 experiment at Fermilab (E989) will reduce the combined statistical and systematic error of the BNL experiment by a factor of 4. An overview of the new experiment is described in this article.
Download or read book The Anomalous Magnetic Moment of the Muon written by Fred Jegerlehner and published by Springer Science & Business Media. This book was released on 2008 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the present state of knowledge of the anomalous magnetic moment a=(g-2)/2 of the muon. The muon anomalous magnetic moment is one of the most precisely measured quantities in elementary particle physics and provides one of the most stringent tests of relativistic quantum field theory as a fundamental theoretical framework. It allows for an extremely precise check of the standard model of elementary particles and of its limitations.
Download or read book The New Muon G 2 Experiment at Fermilab written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Precision measurements of fundamental quantities have played a key role in pointing the way forward in developing our understanding of the universe. Though the enormously successful Standard Model (SM) describes the breadth of both historical and modern experimental particle physics data, it is necessarily incomplete. The muon $g-2$ experiment executed at Brookhaven concluded in 2001 and measured a discrepancy of more than three standard deviations compared to the Standard Model calculation. Arguably, this remains the strongest hint of physics beyond the SM. A new initiative at Fermilab is under construction to improve the experimental accuracy four-fold. The current status is presented here.
Download or read book Data Acquisition Analysis and Simulations for the Fermilab Muon G 2 Experiment written by Fang Han and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Data Acquisition for the New Muon g 2 Experiment at Fermilab written by and published by . This book was released on 2015 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NuSTORM Neutrinos from STORed Muons written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Physics Reference Library written by Christian W. Fabjan and published by Springer Nature. This book was released on 2020 with total page 1083 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second open access volume of the handbook series deals with detectors, large experimental facilities and data handling, both for accelerator and non-accelerator based experiments. It also covers applications in medicine and life sciences. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Download or read book Polarized Pions written by W. A. Perkins and published by . This book was released on 1965 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Lepton Dipole Moments written by B. Lee Roberts and published by World Scientific. This book was released on 2010 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a self-contained description of the measurements of the magnetic dipole moments of the electron and muon, along with a discussion of the measurements of the fine structure constant, and the theory associated with magnetic and electric dipole moments. Also included are the searches for a permanent electric dipole moment of the electron, muon, neutron and atomic nuclei. The related topic of the transition moment for lepton flavor violating processes, such as neutrinoless muon or tauon decays, and the search for such processes are included as well. The papers, written by many of the leading authors in this field, cover both the experimental and theoretical aspects of these topics. Sample Chapter(s). Chapter 1: Historical Introduction to Electric and Mangnetic Moments (367 KB). Contents: Historical Introduction (B L Roberts); Electromagnetic Dipole Moments and New Physics (A Czarnecki & W J Marciano); Lepton g OCo 2 from 1947 to Present (T Kinoshita); Analytic QED Calculations of the Anomalous Magnetic Moment of the Electron (S Laporta & E Remiddi); Measurements of the Electron Magnetic Moment (G Gabrielse); Determining the Fine Structure Constant (G Gabrielse); Helium Fine Structure Theory for the Determination of (K Pachucki & J Sapirstein); Hadronic Vacuum Polarization and the Lepton Anomalous Magnetic Moments (M Davier); The Hadronic Light-by-Light Contribution to a, e (J Prades et al.); General Prescriptions for One-loop Contributions to a e, (K R Lynch); Measurement of the Muon ( g OCo 2) Value (J P Miller et al.); Muon ( g OCo 2) and Physics Beyond the Standard Model (D StAckinger); Probing CP Violation with Electric Dipole Moments (M Pospelov & A Ritz); The Electric Dipole Moment of the Electron (E D Commins & D DeMille); Neutron EDM Experiments (S K Lamoreaux & R Golub); Nuclear Electric Dipole Moments (W C Griffith et al.); EDM Measurements in Storage Rings (B L Roberts et al.); Models of Lepton Flavor Violation (Y Okada); Search for the Charged Lepton-Flavor-Violating Transition Moments l OaAE l OC (Y Kuno). Readership: Researchers and graduate students in particle physics, atomic physics and nuclear physics, as well as experts working in the field
Download or read book An Energy integrated Analysis for Measuring the Anomalous Precession Frequency for the Muon G 2 Experiment at Fermilab written by Laura Elizabeth Kelton and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Frontiers in Physics written by Tepper L. Gill and published by . This book was released on 1996 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flow and Thermal Management Inside of Muon Tracker Within Vacuum written by Guanrong Greg Luo and published by . This book was released on 2015 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Muon g-2 experiment at Fermi National Accelerator Laboratory is structured to study the physical property of a muon particle. The first experiment, however, found 3 sigma of standard deviation different from its prediction. Therefore, the second experiment will try to redesign the muon tracker in order to achieve higher resolution. When muons precess under a specific magnetic field within the storage ring, they will be captured by series of muon trackers, then the measurement data will be used to calculate and compare with the theoretical prediction. Since argon-ethane gas will be filled inside muon tracker, one of the purposes is to make sure the flow inside muon tracker is evenly distributed. Otherwise, resolution will be compromised. What's more, muon trackers will contain electronic components inside in order to record muon data. At the same time, electronic components generate heat inside muon trackers. However, due to tracker dimension confinement, traditional cooling method such as gas cooling or water cooling become hard to achieve. A new feature design is needed to solve this nontrivial thermal problem. The limitation space inside muon trackers actually also lead to a new separate system set up. For the flow and thermal problem, simulations were run using ANSYS to validate conceptual design. Subsequent geometric and thermal analysis was performed for further model optimization. In the end, a refined muon tracker design with proper cooling capacity was confirmed.
