Download or read book Radio Frequency Station beam Dynamics Interaction in Circular Accelerators written by Themistoklis Mastoridis and published by Stanford University. This book was released on 2005 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The longitudinal beam dynamics in circular accelerators is mainly defined by the interaction of the beam current with the accelerating Radio Frequency (RF) stations. For stable operation, Low Level RF (LLRF) feedback systems are employed to reduce coherent instabilities and regulate the accelerating voltage. The LLRF system design has implications for the dynamics and stability of the closed-loop RF systems as well as for the particle beam, and is very sensitive to the operating range of accelerator currents and energies. Stability of the RF loop and the beam are necessary conditions for reliable machine operation. This dissertation describes theoretical formalisms and models that determine the longitudinal beam dynamics based on the LLRF implementation, time domain simulations that capture the dynamic behavior of the RF station-beam interaction, and measurements from the Positron-Electron Project (PEP-II) and the Large Hadron Collider (LHC) that validate the models and simulations. These models and simulations are structured to capture the technical characteristics of the system (noise contributions, non-linear elements, and more). As such, they provide useful results and insight for the development and design of future LLRF feedback systems. They also provide the opportunity to study diverse longitudinal beam dynamics effects such as coupled-bunch impedance driven instabilities and single bunch longitudinal emittance growth. Coupled-bunch instabilities and RF station power were the performance limiting effects for PEP-II. The sensitivity of the instabilities to individual LLRF parameters, the effectiveness of alternative operational algorithms, and the possible tradeoffs between RF loop and beam stability were studied. New algorithms were implemented, with significant performance improvement leading to a world record current during the last PEP-II run of 3212 mA for the Low Energy Ring. Longitudinal beam emittance growth due to RF noise is a major concern for LHC. Simulations studies and measurements were conducted that clearly show the correlation between RF noise and longitudinal bunch emittance, identify the major LLRF noise contributions, and determine the RF component dominating this effect. With these results, LHC upgrades and alternative algorithms are evaluated to reduce longitudinal emittance growth during operations. The applications of this work are described with regard to future machines and analysis of new technical implementations, as well as to possible future work which would continue the directions of this dissertation.
Download or read book Proceedings written by and published by . This book was released on 1995 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Level Radio Frequency Systems written by Stefan Simrock and published by Springer Nature. This book was released on 2022-03-02 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book begins with an overview of the RF control concepts and strategies. It then introduces RF system models for optimizing the system parameters to satisfy beam requirements and for controller design. In addition to systematically discussing the RF field control algorithms, it presents typical architecture and algorithms for RF signal detection and actuation. Further, the book addresses the analysis of the noise and nonlinearity in LLRF systems to provide a better understanding of the performance of the RF control system and to specify the performance requirements for different parts of the RF system. Today, accelerators require increased RF stability and more complex operation scenarios, such as providing beam for different beam lines with various parameters, and as a result LLRF systems are becoming more critical and complex. This means that LLRF system developers need have extensive knowledge of the entire accelerator complex and a wide range of other areas, including RF and digital signal processing, noise analysis, accelerator physics and systems engineering. Providing a comprehensive introduction to the basic theories, algorithms and technologies, this book enables LLRF system developers to systematically gain the knowledge required to specify, design and implement LLRF systems and integrate them with beam acceleration. It is intended for graduate students, professional engineers and researchers in accelerator physics.
Download or read book European Particle Accelerator Conference Epac 94 In 3 Volumes written by Christine Petit-jean-genaz and published by World Scientific. This book was released on 1994-11-26 with total page 2968 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings aim to provide a comprehensive overview of research, technology and applications in the field of accelerators. Contributions from the entire field of accelerators are presented, including low and high energy machines, and medical and industrial accelerators.
Download or read book Albuquerque Meeting Proceedings Of The 8th Meeting Division Of Particles And Fields Of The American Physical Society In 2 Volumes written by Sally Seidel and published by World Scientific. This book was released on 1995-07-05 with total page 2088 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest results from high energy physics laboratories. The topics discussed include: Cosmology, Heavy Ions, Electroweak, Heavy Flavour Physics and CP Violation/Rare Decays, QCD and Beyond the Standard Model, Planck Scale Physics, Accelerator and Non-Accelerator Physics and Instrumentation.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geostationary Operational Environmental Satellite GOES Data Collection System written by Telcom, Incorporated, McLean, Va and published by . This book was released on 1968 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics And Engineering Of High performance Electron Storage Rings And Application Of Superconducting Technology Proceedings Of The Asian Accelerator School written by Zhiyuan Guo and published by World Scientific. This book was released on 2002-02-27 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first Asian Accelerator School (AAS) was organised to show the rapid development of accelerator sciences based on electron storage rings in Asia. At present seven electron-positron colliders are operational in the world, and two of them are located in Asia: KEKB (the KEK B-Factory) at KEK in Japan, and BEPC at IHEP in China. It is also notable that one-third of the operating synchrotron light sources are Asian machines.To further improve the performance of electron storage rings, the use of superconducting magnets and cavities is of vital importance; therefore the curriculum of AAS was arranged not only to teach the basic physics of storage rings but also to give students a basic knowledge of superconducting technology.
Download or read book EPAC 92 written by H. Henke and published by Atlantica Séguier Frontières. This book was released on 1992 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Accelerators Heacc 92 Proceedings Of The Xv International Conference In 2 Volumes written by J Rossbach and published by World Scientific. This book was released on 1993-02-10 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The High Energy Accelerator Conference has always been the monitor of the state of the art and the new trends in planning, construction and operation of large particle accelerators. It is held every three years. The 1992 conference is devoted to High Energy Hadron Accelerators and Colliders, Linear Colliders, e⁺e⁻ Storage Rings and related Technologies for these machines. In addition to status reports and contributed papers, the program features twelve survey talks which include summaries of individual poster papers.
Download or read book Energy and Water Development Appropriations for 1982 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 1981 with total page 1742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supercolliders And Superdetectors Proceedings Of The 19th And 25th Workshops Of The Infn Eloisatron Project written by William A Barletta and published by World Scientific. This book was released on 1994-01-27 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the critical issues involved in scaling the technology of proton synchrotrons to operate at energies much larger than those of existing accelerators. Luminosity limitions and interdependence of machine characteristics are analyzed. The second section presents analyses of the detector technologies needed to utilize a hadron super collider at the highest energies and luminosities.
Download or read book B Physics Physics Beyond The Standard Model At The B Factory Proceedings Of The 1994 International Workshop written by S Suzuki and published by World Scientific. This book was released on 1995-07-14 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reviews the recent progress of B physics, and discusses theoretical and experimental aspects of the physics which will be explored at the B factory. CP violation and new physics beyond the Standard Model are the main issues of the discussion.
Download or read book Proceedings of the 1999 Particle Accelerator Conference written by and published by . This book was released on 1999 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1995 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Congressional Budget Request written by United States. Department of Energy and published by . This book was released on 1982 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Epac 96 written by S. Myers and published by CRC Press. This book was released on 1996-01-01 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt: EPAC 96; Proceedings of the Fifth European Particle Accelerator Conference, Sitges (Barcelona), 10 to 14 June 1996, Three Volume Set, also available on a CD-ROM, provides a comprehensive overview of research, technology, and special applications in the field of accelerators. It serves as a source for novel ideas and familiarizes researchers with advanced concepts.
