Fabrication of Niobium Sheet for RF Cavities

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (61 download)

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Book Synopsis Fabrication of Niobium Sheet for RF Cavities by : Shreyas Balachandran

Download or read book Fabrication of Niobium Sheet for RF Cavities written by Shreyas Balachandran and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigated the microstructure and mechanical property of RRR(high purity) and RG (low purity) niobium (Nb) sheet material. RRR Nb is used in the fabrication RF cavities. Our method involves processing bulk niobium by equal channel angular extrusion (ECAE) and then cross rolling to obtain sheets. This work is a study of the effect different thermomechanical processing variables have on the microstructure niobium sheets. Recrystallization behaviors strongly depended on the purity levels. Tensile tests on sheets clearly indicated the anisotropy in the sheet material. The ductility of the sheet was found to be the largest at an angle of 45° to the rolling direction. There was no apparent relationship observed in the yielding behavior in the different samples. The formability of the sheet measured by the anisotropy ratio suggested a strong dependence of anisotropy on texture. Texture results obtained show that different routes of ECAE can lead to variety of textures in final sheet material. Correlations between the microstructure and the ECAE routes suggest that effective control of microstructure is possible by the thermomechanical steps followed in this study.

RF Superconductivity

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Publisher : John Wiley & Sons
ISBN 13 : 3527405720
Total Pages : 465 pages
Book Rating : 4.5/5 (274 download)

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Book Synopsis RF Superconductivity by : Hasan Padamsee

Download or read book RF Superconductivity written by Hasan Padamsee and published by John Wiley & Sons. This book was released on 2009-04-20 with total page 465 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.

The RF Performance of Cavity Made from Defective Niobium Material Determined by Eddy Current Scanning

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ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis The RF Performance of Cavity Made from Defective Niobium Material Determined by Eddy Current Scanning by :

Download or read book The RF Performance of Cavity Made from Defective Niobium Material Determined by Eddy Current Scanning written by and published by . This book was released on 2010 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eddy current scanning (ECS) has been used to screen niobium sheets to avoid defective material being used in costly cavity fabrication. The evaluation criterion of this quality control tool is not well understood. Past surface studies showed some features were shallow enough to be removed by chemical etching. The remaining features were identified to be small number of deeper inclusions, but mostly unidentifiable features (by chemical analysis). A real cavity made of defective niobium material has been tested. The cavity achieved high performance with comparable results to the cavities made from defect free cavities. Temperature mapping could help to define the control standard clearly.

RF Superconductivity for Accelerators

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Publisher : John Wiley & Sons
ISBN 13 : 3527408428
Total Pages : 548 pages
Book Rating : 4.5/5 (274 download)

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Book Synopsis RF Superconductivity for Accelerators by : Hasan Padamsee

Download or read book RF Superconductivity for Accelerators written by Hasan Padamsee and published by John Wiley & Sons. This book was released on 2008-02-26 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces some of the key ideas of this exciting field, using a pedagogic approach, and presents a comprehensive overview of the field. It is divided into four parts. The first part introduces the basic concepts of microwave cavities for particle acceleration. The second part is devoted to the observed behavior of superconducting cavities. In the third part,general issues connected with beam-cavity interaction and the related issues for the critical components are covered. The final part discusses applications of superconducting cavities to frontier accelerators of the future, drawing heavily on the examples that are in their most advanced stage. Each part of the book ends in a Problems section to illustrate and amplify text material as well as draw on example applications of superconducting cavities to existing and future accelerators.

JLab SRF Cavity Fabrication Errors, Consequences and Lessons Learned

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (873 download)

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Book Synopsis JLab SRF Cavity Fabrication Errors, Consequences and Lessons Learned by :

Download or read book JLab SRF Cavity Fabrication Errors, Consequences and Lessons Learned written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, elliptical superconducting RF (SRF) cavities are preferably made from deep-drawn niobium sheets as pursued at Jefferson Laboratory (JLab). The fabrication of a cavity incorporates various cavity cell machining, trimming and electron beam welding (EBW) steps as well as surface chemistry that add to forming errors creating geometrical deviations of the cavity shape from its design. An analysis of in-house built cavities over the last years revealed significant errors in cavity production. Past fabrication flaws are described and lessons learned applied successfully to the most recent in-house series production of multi-cell cavities.

Petition Asking a Survey, by the State, of the New York and Erie Rail-road

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ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (832 download)

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Book Synopsis Petition Asking a Survey, by the State, of the New York and Erie Rail-road by :

Download or read book Petition Asking a Survey, by the State, of the New York and Erie Rail-road written by and published by . This book was released on 1834 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings

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ISBN 13 :
Total Pages : 802 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Proceedings by :

Download or read book Proceedings written by and published by . This book was released on 1974 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Design, Fabrication, and Testing of Superconducting RF Cavities for High Average Beam Currents

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ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis Design, Fabrication, and Testing of Superconducting RF Cavities for High Average Beam Currents by : David Joseph Meidlinger

Download or read book Design, Fabrication, and Testing of Superconducting RF Cavities for High Average Beam Currents written by David Joseph Meidlinger and published by . This book was released on 2007 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physical Properties of Niobium and Specifications for Fabrication of Superconducting Cavities

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ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (873 download)

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Book Synopsis Physical Properties of Niobium and Specifications for Fabrication of Superconducting Cavities by :

Download or read book Physical Properties of Niobium and Specifications for Fabrication of Superconducting Cavities written by and published by . This book was released on 2011 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is important to distinguish among the properties of niobium, the ones that are related to the cavity's SRF performances, the formability of the material, and the mechanical behavior of the formed cavity. In general, the properties that dictate each of the above mentioned characteristics have a detrimental effect on one another and in order to preserve the superconducting properties without subduing the mechanical behavior, a balance has to be established. Depending on the applications, some parameters become less important and an understanding of the physical origin of the requirements might help in this optimization. SRF applications require high purity niobium (high RRR), but pure niobium is very soft from fabrication viewpoint. Moreover conventional fabrication techniques tend to override the effects of any metallurgical process meant to strengthen it. As those treatments dramatically affect the forming of the material they should be avoided. These unfavorable mechanical properties have to be accounted for in the design of the cavities rather than in the material specification. The aim of this paper is to review the significance of the important mechanical properties used to characterize niobium and to present the optimal range of values. Most of the following information deals with the specification of sheets for cell forming unless otherwise noted.

Nuclear Science Abstracts

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ISBN 13 :
Total Pages : 1644 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Nuclear Science Abstracts by :

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1971-10 with total page 1644 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Applied Superconductivity

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Publisher : John Wiley & Sons
ISBN 13 : 3527412093
Total Pages : 1334 pages
Book Rating : 4.5/5 (274 download)

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Book Synopsis Applied Superconductivity by : Paul Seidel

Download or read book Applied Superconductivity written by Paul Seidel and published by John Wiley & Sons. This book was released on 2015-03-23 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This wide-ranging presentation of applied superconductivity, from fundamentals and materials right up to the details of many applications, is an essential reference for physicists and engineers in academic research as well as in industry. Readers looking for a comprehensive overview on basic effects related to superconductivity and superconducting materials will expand their knowledge and understanding of both low and high Tc superconductors with respect to their application. Technology, preparation and characterization are covered for bulk, single crystals, thins fi lms as well as electronic devices, wires and tapes. The main benefit of this work lies in its broad coverage of significant applications in magnets, power engineering, electronics, sensors and quantum metrology. The reader will find information on superconducting magnets for diverse applications like particle physics, fusion research, medicine, and biomagnetism as well as materials processing. SQUIDs and their usage in medicine or geophysics are thoroughly covered, as are superconducting radiation and particle detectors, aspects on superconductor digital electronics, leading readers to quantum computing and new devices.

Handbook Of Accelerator Physics And Engineering (Third Edition)

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Publisher : World Scientific
ISBN 13 : 981126919X
Total Pages : 960 pages
Book Rating : 4.8/5 (112 download)

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Book Synopsis Handbook Of Accelerator Physics And Engineering (Third Edition) by : Alexander Wu Chao

Download or read book Handbook Of Accelerator Physics And Engineering (Third Edition) written by Alexander Wu Chao and published by World Scientific. This book was released on 2023-02-02 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by internationally recognized authorities in the field, this expanded and updated new edition of the bestselling Handbook, containing many new articles, is aimed at the design and operation of modern particle accelerators. It is intended as a vade mecum for professional engineers and physicists engaged in these subjects. With a collection of more than 2000 equations, 300 illustrations and 500 graphs and tables, here one will find, in addition to common formulae of previous compilations, hard to find, specialized formulae, recipes and material data pooled from the lifetime experience of many of the world's most able practioners of the art and science of accelerators.The seven chapters include both theoretical and practical matters as well as an extensive glossary of accelerator types. Chapters on beam dynamics and electromagnetic and nuclear interactions deal with linear and nonlinear single particle and collective effects including spin motion, beam-environment, beam-beam, beam-electron, beam-ion and intrabeam interactions. The impedance concept and related calculations are dealt with at length as are the instabilities due to the various interactions mentioned. A chapter on operational considerations including discussions on the assessment and correction of orbit and optics errors, realtime feedbacks, generation of short photon pulses, bunch compression, phase-space exchange, tuning of normal and superconducting linacs, energy recovery linacs, free electron lasers, cryogenic vacuum systems, steady state microbuching, cooling, space-charge compensation, brightness of light sources, collider luminosity optimization and collision schemes, machine learning, multiple frequency rf systems, FEL seeding, ultrafast electron diffraction, and Gamma Factory. Chapters on mechanical and electrical considerations present material data and important aspects of component design including heat transfer and refrigeration. Hardware systems for particle sources, feedback systems, confinement, including undulators, and acceleration (both normal and superconducting) receive detailed treatment in a sub-systems chapter, beam measurement and apparatus being treated therein as well.A detailed name and subject index is provided together with reliable references to the literature where the most detailed information available on all subjects treated can be found.

Thermodynamic Evaluation of the Propensity of Niobium to Absorb Hydrogen During Fabrication of Superconducting Radio Frequency Accelerator Cavities

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ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (823 download)

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Book Synopsis Thermodynamic Evaluation of the Propensity of Niobium to Absorb Hydrogen During Fabrication of Superconducting Radio Frequency Accelerator Cavities by : Richard E. Ricker

Download or read book Thermodynamic Evaluation of the Propensity of Niobium to Absorb Hydrogen During Fabrication of Superconducting Radio Frequency Accelerator Cavities written by Richard E. Ricker and published by . This book was released on 2009 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physics of Particle Accelerators

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ISBN 13 :
Total Pages : 2398 pages
Book Rating : 4.:/5 (44 download)

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Book Synopsis Physics of Particle Accelerators by : Margaret Dienes

Download or read book Physics of Particle Accelerators written by Margaret Dienes and published by . This book was released on 1989 with total page 2398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Review of Ingot Niobium as a Material for Superconducting Radiofrequency Accelerating Cavities

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ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (94 download)

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Book Synopsis Review of Ingot Niobium as a Material for Superconducting Radiofrequency Accelerating Cavities by :

Download or read book Review of Ingot Niobium as a Material for Superconducting Radiofrequency Accelerating Cavities written by and published by . This book was released on 2014 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a result of collaboration between Jefferson Lab and niobium manufacturer Companhia Brasileira de Metalurgia e Mineração (CBMM), ingot niobium was explored as a possible material for superconducting radiofrequency (SRF) cavity fabrication. The first single cell cavity from large-grain high purity niobium was fabricated and successfully tested at Jefferson Lab in 2004. This work triggered research activities in other SRF laboratories around the world. The large-grain (LG) niobium became not only an interesting alternative material for cavity builders, but also material scientists and surface scientists were eager to participate in the development of this technology. Many single cell cavities made from material of different suppliers have been tested successfully and several multi-cell cavities have shown performances comparable to the best cavities made from standard fine-grain niobium. Several 9-cell cavities fabricated by Research Instruments and tested at DESY exceeded the best performing fine grain cavities with a record accelerating gradient of Eacc=45.6 MV/m. The quality factor of those cavities was also higher than that of fine-grain (FG) cavities processed with the same methods. Such performance levels push the state-of-the art of SRF technology and are of great interest for future accelerators. This contribution reviews the development of ingot niobium technology and highlights some of the differences compared to standard FG material and opportunities for further developments.

Handbook of Accelerator Physics and Engineering

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Publisher : World Scientific
ISBN 13 : 9789810235000
Total Pages : 702 pages
Book Rating : 4.2/5 (35 download)

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Book Synopsis Handbook of Accelerator Physics and Engineering by : Alex Chao

Download or read book Handbook of Accelerator Physics and Engineering written by Alex Chao and published by World Scientific. This book was released on 1999 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by internationally recognized authorities in the field, this handbook focuses on Linacs, Synchrotrons and Storage Rings and is intended as a vade mecum for professional engineers and physicists engaged in these subjects. Here one will find, in addition to the common formulae of previous compilations, hard to find specialized formulae, recipes and material data pooled from the lifetime experiences of many of the world's most able practitioners of the art and science of accelerator building and operation.

Surface Polishing of Niobium for Superconducting Radio Frequency (SRF) Cavity Application

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ISBN 13 :
Total Pages : 237 pages
Book Rating : 4.:/5 (971 download)

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Book Synopsis Surface Polishing of Niobium for Superconducting Radio Frequency (SRF) Cavity Application by : Liang Zhao (Ph. D.)

Download or read book Surface Polishing of Niobium for Superconducting Radio Frequency (SRF) Cavity Application written by Liang Zhao (Ph. D.) and published by . This book was released on 2015 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: