Download or read book Superiority of Electropolishing Over Chemical Polishing on High Gradients written by Kenji Saito and published by . This book was released on 1998 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electropolishing and Chemical Polishing of High strength High temperature Metals and Alloys written by J. A. Gurklis and published by . This book was released on 1961 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrochemical Engineering written by Richard C. Alkire and published by John Wiley & Sons. This book was released on 2018-08-24 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in the "Advances in Electrochemical Sciences and Engineering" series focuses on problem-solving, illustrating how to translate basic science into engineering solutions. The book's concept is to bring together engineering solutions across the range of nano-bio-photo-micro applications, with each chapter co-authored by an academic and an industrial expert whose collaboration led to reusable methods that are relevant beyond their initial use. Examples of experimental and/or computational methods are used throughout to facilitate the task of moving atomistic-scale discoveries and understanding toward well-engineered products and processes based on electrochemical phenomena.
Download or read book Analysis of High Field Q slope hfqs Causes and Development of New Chemical Polishing Acid for Niobium Srf Cavities written by Didi Luo and published by . This book was released on 2020 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buffered Chemical Polishing (BCP) was the most conventional polishing method for superconducting radiofrequency (SRF) Niobium (Nb) cavity surface preparation before the discovery of Electropolishing (EP), which is superior to BCP in high gradient performance. The High Field Q-slope (HFQS) is entirely eliminated by taking the low-temperature bake (LTB) post EP, which guarantees high gradient performance in EP'ed cavities. The mechanism of the HFQS is well understood for EP'ed cavities. On the other hand, there is no common consensus on the HFQS with BCP, since even BCP with LTB does not always resolve the HFQS. BCP is much easier to apply and still a vital preparation technology for very complicated SRF structures like low beta cavities. Therefore, overcoming the issue of HFQS with BCP is highly beneficial to the SRF community. This thesis mines a large number of available data sets on BCP'ed cavity performance with fine grain, large grain, and even single-crystal niobium materials under different experimental settings. We found that all existing explanations for HFQS with BCP are inconsistent with some experimental results, and propounded nitrogen contamination as a new model to explain the result. Our conclusion is made based on previously unresolved phenomena which include (1) applying multiple BCP post EP; the maximum gradient does not always agree with roughness; (2) cavity treated with EP acid adding a drop of nitric acid started to have non-resolvable HFQS; (3) maximum field of BCP single-crystal cavities are lower than EP large grain cavities; (4) temperature map shows no high roughness area heating for a large-grain BCP cavity. We then checked that nitrogen contamination agrees with all existing data and nicely explains unresolved phenomena.According to this result, we have started developing a new nitrogen-free chemical polishing acid. Hydrogen peroxide with HF mixture was reported able to react with Nb, and there is no extra element contamination in it, so we replace the conventional BCP with this mixture to start our study.We discovered that this new acid could not provide sufficient smooth finishing surface, even after we adjusted all the parameters. However, adding a copper catalyst allows this acid to provide a smooth surface similar to or even better than conventional BCP. The copper remnant can be neglected according to an EDS study on the Nb surface. We studied the reaction mechanism and deduced that several other metals that can be promising as catalysts. One of those is iron, which was later shown to have the catalyst effect; this proved the mechanism we found is right. Further study can focus on other potential catalysts (such as Pb and Sn) and testing cavities treated by these acids. Pb is superconducting under operation temperature, may reduce potential harm to cavity performance, and Sn may react with Nb and generate Niobium Tin on its surface, which is another promising material for SRF cavities. These studies will offer more possibilities for SRF material.
Download or read book Superconducting Radiofrequency Technology for Accelerators written by Hasan Padamsee and published by John Wiley & Sons. This book was released on 2023-03-06 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconducting Radiofrequency Technology for Accelerators Single source reference enabling readers to understand and master state-of-the-art accelerator technology Superconducting Radiofrequency Technology for Accelerators provides a quick yet thorough overview of the key technologies for current and future accelerators, including those projected to enable breakthrough developments in materials science, nuclear and astrophysics, high energy physics, neutrino research and quantum computing. The work is divided into three sections. The first part provides a review of RF superconductivity basics, the second covers new techniques such as nitrogen doping, nitrogen infusion, oxide-free niobium, new surface treatments, and magnetic flux expulsion, high field Q slope, complemented by discussions of the physics of the improvements stemming from diagnostic techniques and surface analysis as well as from theory. The third part reviews the on-going applications of RF superconductivity in already operational facilities and those under construction such as light sources, proton accelerators, neutron and neutrino sources, ion accelerators, and crab cavity facilities. The third part discusses planned accelerator projects such as the International Linear Collider, the Future Circular Collider, the Chinese Electron Positron Collider, and the Proton Improvement Plan-III facility at Fermilab as well as exciting new developments in quantum computing using superconducting niobium cavities. Written by the leading expert in the field of radiofrequency superconductivity, Superconducting Radiofrequency Technology for Accelerators covers other sample topics such as: Fabrication and processing on Nb-based SRF structures, covering cavity fabrication, preparation, and a decade of progress in the field SRF physics, covering zero DC resistance, the Meissner effect, surface resistance and surface impedance in RF fields, and non-local response of supercurrent N-doping and residual resistance, covering trapped DC flux losses, hydride losses, and tunneling measurements Theories for anti-Q-slope, covering the Xiao theory, the Gurevich theory, non-equilibrium superconductivity, and two fluid model based on weak defects Superconducting Radiofrequency Technology for Accelerators is an essential reference for high energy physicists, power engineers, and electrical engineers who want to understand the latest developments of accelerator technology and be able to harness it to further research interest and practical applications.
Download or read book Microwave Superconductivity written by H. Weinstock and published by Springer Science & Business Media. This book was released on 2001 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Study Institute, Millau, France, 29 August-10 September 1999
Download or read book RF Superconductivity written by Hasan Padamsee and published by John Wiley & Sons. This book was released on 2009-03-30 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second book to RF Superconducting, written by one of the leading experts. The book provides fast and up-to-date access to the latest advances in the key technology for future accelerators. Experts as well as newcomers to the field will benefit from the discussion of progress in the basic science, technology as well as recent and forthcoming applications. Researchers in accelerator physics will also find much that is relevant to their discipline.
Download or read book The Electrolytic and Chemical Polishing of Metals in Research and Industry written by William John McGregor TEGART and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Electrolytic and Chemical Polishing of Metals in Research and Industry written by W. J. McG. Tegart and published by . This book was released on 1959 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Gradient Performance by Electropolishing with 1300 MHz Single and Multi cell Niobium Superconducting Cavities written by K. Saito and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Polishing and Electropolishing of 52100 Steel and 24 S and 61 S Aluminum written by Glenn Armstrong and published by . This book was released on 1959 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EPAC 98 written by S. Myers and published by Institute of Physics Publishing (GB). This book was released on 1998 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CERN Courier written by European Organization for Nuclear Research and published by . This book was released on 1959 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This journal is devoted to the latest research on physics, publishing articles on everything from elementary particle behavior to black holes and the history of the universe.
Download or read book International Linear Collider Technical Review Committee Second Report 2003 written by International Linear Collider Technical Review Committee and published by . This book was released on 2003 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electropolishing of Nickel Disks for Precision Counting Analyses written by R. E. Greene and published by . This book was released on 1948 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical World and Engineering Record written by and published by . This book was released on 1958 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
