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Optics Of Electron Beam In The Recycler
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Book Synopsis Optics of Electron Beam in the Recycler by : A. Warner
Download or read book Optics of Electron Beam in the Recycler written by A. Warner and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron cooling of 8.9 GeV/c antiprotons in the Recycler ring (Fermilab) requires high current and good quality of the DC electron beam. Electron trajectories of {approx}0.2 A or higher DC electron beam have to be parallel in the cooling section, within {approx}0.2 mrad, making the beam envelope cylindrical. These requirements yielded a specific scheme of the electron transport from a gun to the cooling section, with electrostatic acceleration and deceleration in the Pelletron. Recuperation of the DC beam limits beam losses at as tiny level as {approx}0.001%, setting strict requirements on the return electron line to the Pelletron and a collector. To smooth the beam envelope in the cooling section, it has to be linear and known at the transport start. Also, strength of the relevant optic elements has to be measured with good accuracy. Beam-based optic measurements are being carried out and analyzed to get this information. They include beam simulations in the Pelletron, differential optic (beam response) measurements and simulation, beam profile measurements with optical transition radiation, envelope measurements and analysis with orifice scrapers. Current results for the first half-year of commissioning are presented. Although electron cooling is already routinely used for pbar stacking, its efficiency is expected to be improved.
Book Synopsis Effect of Secondary Ions on the Electron Beam Optics in the Recycler Electron Cooler by :
Download or read book Effect of Secondary Ions on the Electron Beam Optics in the Recycler Electron Cooler written by and published by . This book was released on 2010 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antiprotons in Fermilab's Recycler ring are cooled by a 4.3 MeV, 0.1-0.5 A DC electron beam (as well as by a stochastic cooling system). The unique combination of the relativistic energy ([gamma] = 9.49), an Ampere-range DC beam, and a relatively weak focusing makes the cooling efficiency particularly sensitive to ion neutralization. A capability to clear ions was recently implemented by way of interrupting the electron beam for 1-30 [mu]s with a repetition rate of up to 40 Hz. The cooling properties of the electron beam were analyzed with drag rate measurements and showed that accumulated ions significantly affect the beam optics. For a beam current of 0.3 A, the longitudinal cooling rate was increased by factor of ≈2 when ions were removed.
Book Synopsis Introduction to Electron Optics by : Vernon Ellis Cosslett
Download or read book Introduction to Electron Optics written by Vernon Ellis Cosslett and published by . This book was released on 1946 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis OTR Measurements and Modeling of the Electron Beam Optics at the E-cooling Facility by : A. Warner
Download or read book OTR Measurements and Modeling of the Electron Beam Optics at the E-cooling Facility written by A. Warner and published by . This book was released on 2005 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optics of the electron beam accelerated in the Pelletron, intended for the electron cooling of 8.9 GeV antiprotons in the Fermilab recycler storage ring, has been studied. The beam profile parameters were measured under the accelerating section using Optical Transition Radiation (OTR) monitor. The monitor employs a highly-reflective 2 inch-diameter aluminum OTR-screen with a thickness of 5 {micro}m and a digital CCD camera. The measurements were done in a pulse-signal mode in the beam current range of 0.03-0.8 A and at pulse durations ranging from 1 {micro}s to 4 {micro}s. Differential profiles measured in pulsed mode are compared with results obtained by modeling of the DC beam dynamics from the Pelletron cathode to the OTR monitor. The modeling was done with SAM, ULTRASAM and BEAM programs. An adjustment of the magnetic fields in the lenses of the accelerating section was done in the simulations. The simulated electron beam optics downstream of the accelerating section was in good agreement with the measurements made with pulsed beam.
Book Synopsis New Electron Beam Optics for the Preparation of Insulating Crystals by the Floating Zone Method by : Charles Edward Ryan
Download or read book New Electron Beam Optics for the Preparation of Insulating Crystals by the Floating Zone Method written by Charles Edward Ryan and published by . This book was released on 1966 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problems involved in the preparation of single crystals of refractory insulating materials are briefly outlined. The current status of the preparation of insulating crystals by the electron beam heated floating-zone method is reviewed, and the disadvantages are noted. The conception, construction and test of a new electron beam optics are described, and the advantages are pointed out. Sapphire, ruby and tungsten rods were zoned in testing the new optics. The influence of zone length, liquid - solid interface geometry, foreheater and afterheater temperature, and mechanical translation and rotation systems on crystal perfection are discussed. (Author).
Book Synopsis Electron Optics and Electron-beam Devices by : A. Zhigarev
Download or read book Electron Optics and Electron-beam Devices written by A. Zhigarev and published by . This book was released on 1975 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electron-beam Sources and Charged-particle Optics by : Eric Munro
Download or read book Electron-beam Sources and Charged-particle Optics written by Eric Munro and published by . This book was released on 1995 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Beam Cooling and Related Topics by : Sergei Nagaitsev
Download or read book Beam Cooling and Related Topics written by Sergei Nagaitsev and published by American Institute of Physics. This book was released on 2006-04-06 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Galena, Illinois, 18-23 September 2005
Book Synopsis Novel Electron Optics for Electron Beam Lithography by : Thomas Harold Newman
Download or read book Novel Electron Optics for Electron Beam Lithography written by Thomas Harold Newman and published by . This book was released on 1986 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recycling and Reusing of Engineering Materials by : Waseem S. Khan
Download or read book Recycling and Reusing of Engineering Materials written by Waseem S. Khan and published by Elsevier. This book was released on 2022-06-02 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recycling and Reusing of Engineering Materials: Recycling for Sustainable Developments covers the latest research and developments in recycling and reusing processes, including new fundamental concepts, techniques, methods and process flows. The book provides applications of these novel technologies to recycling processes and analyzes new and modern ways of recycling techniques. It provides a comprehensive literature review on fundamental aspects of recycling processes, recycling goals, characterization of waste streams, legislative policies and evaluation, electronic recycling, aircraft recycling, recycling processes, energy savings and issues, environmental issues, societal issues, recycled materials, market development for recycling, processing facilities, and awareness and importance of recycling safety. The book is an indispensable reference for researchers in academia and industry. Scientists can use this book for literature reviews and experimental details, and the industry can use its comprehensive detail for literature reviews and to upgrade their processes and systems. Provides the latest information on recycling and reusing processes Includes the results of laboratory experiments from the recycling of electronic waste, recycling of composites, and of aircraft and plastics Covers radioactive waste treatment and biological waste disposal Written by a team of authors with teaching and industrial experience
Book Synopsis Attainment of Electron Beam Suitable for Medium Energy Electron Cooling by : Sergei Seletskiy
Download or read book Attainment of Electron Beam Suitable for Medium Energy Electron Cooling written by Sergei Seletskiy and published by . This book was released on 2005 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogen and Helium Recycling at Plasma Facing Materials by : Ahmed Hassanein
Download or read book Hydrogen and Helium Recycling at Plasma Facing Materials written by Ahmed Hassanein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compendium representing the current state of the art in the modelling, simulation and physics of the interaction of hydrogen and helium with plasma facing materials in fusion reactors. This is the topic that will determine the success of the production of energy by future Tokamak reactors and it is here discussed by the world's experts. Topics covered are recycling of hydrogen isotopes; wall fuelling and wall pumping; active control of hydrogen recycling; hydrogen and helium behaviour in solids and liquid metals; and databases for recycling.
Book Synopsis Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets by : Sergey A. Antipov
Download or read book Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets written by Sergey A. Antipov and published by Springer. This book was released on 2018-11-01 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents profound insights into the origins and dynamics of beam instabilities using both experimental observations and numerical simulations. When the Recycler Ring, a high-intensity proton beam accelerator at Fermi National Accelerator Laboratory, was commissioned, it became evident that the Recycler beam experiences a very fast instability of unknown nature. This instability was so fast that the existing dampers were ineffective at suppressing it. The nature of this phenomenon, alongside several other poorly understood features of the beam, became one of the biggest puzzles in the accelerator community. The author investigated a hypothesis that the instability arises from an interaction with a dense cloud of electrons accompanying the proton beam. He studied the phenomena experimentally by comparing the dynamics of stable and unstable beams, by numerically simulating the build-up of the electron cloud and its interaction with the beam, and by constructing an analytical model of an electron cloud-driven instability with the electrons trapped in combined-function dipole magnets. He has devised a method to stabilize the beam by a clearing bunch, which conclusively revealed that the instability is caused by the electron cloud, trapped in a strong magnetic field. Finally, he conducted measurements of the microwave propagation through a single dipole magnet. These measurements have confirmed the presence of the electron cloud in combined-function magnets.
Book Synopsis Multi-gev High Performance Accelerators And Related Technology: Proceedings Of The Xvi Rcnp Osaka International Symposium by : Kichiji Hatanaka
Download or read book Multi-gev High Performance Accelerators And Related Technology: Proceedings Of The Xvi Rcnp Osaka International Symposium written by Kichiji Hatanaka and published by World Scientific. This book was released on 1997-12-18 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers the field of circular accelerators and related technology for the sub-GeV to multi-GeV energy region from the viewpoint of realization of high performance, i.e., performance and perspectives of operating multi-GeV accelerators, future projects in the multi-GeV energy region, lattice designs and beam dynamics, electron cooling and stochastic cooling, injection and extraction, beam diagnostics, superconducting and normal magnets, magnet power supplies, RF systems, and internal targets. The contributors include leading accelerator physicists from around the world.
Book Synopsis Introduction to Electron Optics by : V. E. Cosslett
Download or read book Introduction to Electron Optics written by V. E. Cosslett and published by . This book was released on 1986 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Physics and Applications of High Brightness Electron Beams by : Luigi Palumbo
Download or read book The Physics and Applications of High Brightness Electron Beams written by Luigi Palumbo and published by World Scientific. This book was released on 2007 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings comprise cutting-edge contributions by researchers at the frontiers of beam physics, free-electron-based light sources, and advanced accelerators. It represents a snap-shot of activity in these fields at a critical historical juncture, where rapid experimental progress is being reported, and new facilities such as X-ray free-electron lasers are under construction. The volume features invited contributions from leading researchers from the international beam physics community that summarize the state-of-the-art research in individual topics, as well as timely contributions from participants that arose during the workshop itself.
Book Synopsis Electron Beams, Lenses, and Optics by : A. B. El-Kareh
Download or read book Electron Beams, Lenses, and Optics written by A. B. El-Kareh and published by . This book was released on 1970 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
