Download or read book Beam Handling and Emittance Control written by and published by . This book was released on 1988 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the results of calculations which concern techniques of beam handling and emittance control for high current beams in advanced accelerators. Beam quality requirements for acceptable performance of beam driven free electron laser devices for SDI missions are examined. The beam quality achievable in high current, space-charge-limited diodes is reviewed and found to be potentially high. Emittance growth during gas-focused transport due to streaming instabilities between beam electrons and gas ions is briefly examined, and estimated to be modest. The principal threat to beam quality degradation is estimated to occur during the lengthy process of acceleration and transport past protuberances, constrictions, or discontinuities in the waveguide wall, or during beam aperturing. A Hamiltonian-theoretic analysis of emittance growth during high current electron beam transport, coupled with an envelope equation analysis of the induced transverse beam oscillations, is applied to develop scaling laws for the emittance growth suffered during such events as beam acceleration, propagation past irises or constrictions in the waveguide wall, beam aperturing, and axial variation in the magnetic guide filed strength. Criteria area developed for preventing excessive emittance growth by avoiding abrupt axial variations and providing sufficiently strong focusing forces. Designed variations in the waveguide wall shape and and in the strength of the magnetic guide field may be introduced to greatly reduce emittance growth during such events as beam acceleration. Keywords: Strategic defense initiative; Beam brightness; Emittance control; Beam quality; Beam transport; Image charge fields.
Download or read book Analytical Study of Beam Handling and Emittance Control written by and published by . This book was released on 1993 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thrust of our research on beam handling and emittance control has been to explore how one might design high current electron accelerators, with the preservation of high beam quality designed as the primary design consideration. We have considered high current, induction linacs in the parameter class of the ETA/ATA accelerators at LLNL, but with improvements to the accelerator gap design and other features to permit a significant increase in the deliverable beam brightness. Our approach for beam quality control has centered on the use of solenoidal magnetic focusing through such induction accelerators, together with gently-shaped (adiabatic) acceleration gaps. This approach offers several tools for the control of beam quality. The strength and axial variation in the solenoidal magnetic field may be designed, as may the length and shape of the acceleration gaps, the loading of the gaps, and the axial spacing from gap to gap. This research has shown that each of these design features may individually be optimized to contribute to improved beam quality control, and by exploiting these features, it appears feasible to produce high current, high energy electron beams possessing breakthrough beam quality and brightness. Applications which have been heretofore technologically unachievable may for the first time become possible. One such application is the production of high performance free electron lasers at very short wavelengths, extending down to the optical (
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Measurement and Control of Charged Particle Beams written by Michiko G. Minty and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the reviews: "This book is a very welcome and valuable addition to the accelerator literature. As noted by the authors, there is relatively little material in the book specifically for low-energy machines, but industrial users may still find it useful to read." Cern Courier
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 1174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Third Workshop on the Tau Charm Factory written by Jasper Kirkby and published by Atlantica Séguier Frontières. This book was released on 1994 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Implantation Technology 92 written by D.F. Downey and published by Elsevier. This book was released on 2012-12-02 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ion implantation technology has made a major contribution to the dramatic advances in integrated circuit technology since the early 1970's. The ever-present need for accurate models in ion implanted species will become absolutely vital in the future due to shrinking feature sizes. Successful wide application of ion implantation, as well as exploitation of newly identified opportunities, will require the development of comprehensive implant models. The 141 papers (including 24 invited papers) in this volume address the most recent developments in this field. New structures and possible approaches are described. The implications for ion implantation technology as well as additional observations of needs and opportunities are discussed. The volume will be of value to all those who are interested in acquiring a more complete understanding of the current developments in ion implantation processes and comprehensive implant models.
Download or read book Physics Briefs written by and published by . This book was released on 1991 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Militarily Critical Technologies List written by and published by . This book was released on 1984 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emittance Control of a Beam by Shaping the Transverse Charge Distribution Using a Tomography Diagnostic written by and published by . This book was released on 1998 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high-brightness beam is very important for many applications. A diagnostic that measures the multi-dimensional phase-space density-distribution of the electron bunch is a must for obtaining such beams. Measurement of a slice emittance has been achieved [1]. Tomographic reconstruction of phase space was suggested [2] and implemented [3,4] using a single quadrupole scan. In the present work we give special attention to the accuracy of the phase space reconstruction and present an analysis using a transport line with nine focusing magnets and techniques to control the optical functions and phases. This diagnostic, coupled with control of the radial charge distribution of presents an opportunity to improve the beam brightness. Combining the slice emittance and tomography diagnostics lead to an unprecedented visualization of phase space distributions in 5 dimensional phase-space and an opportunity to perform high-order emittance corrections.
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Coherent and Collective Interactions of Particles and Radiation Beams written by Alain Aspect and published by IOS Press. This book was released on 1996 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is especially concerned with fundamental theoretical and experimental aspects of relativistic beam physics, recoil, and cooling phenomena in atomic and ion beams and traps, with emphasis on coherence and collective effects. The central theme is the physics of atomic laser and free electron laser, and the development of a bridge between them through the mechanism of the so-called recoil induced gain mechanism. The links between relativistic beam physics and atomic laser physics are explored. This book is targeted at an audience of non-specialists or specialists in only one of the fields mentioned above. It addresses the following topics: Fundamentals of laser cooling and trapping of atoms: theory and experiments; Quantum optics and atomic coherence effects; Laser cooling of trapped ions; from single ion to ion crystal; Spatio-temporal instabilities in optical systems; Coherence in atom optics; atomic diffraction and interferometry; Optical lattices; nonlinear effects in laser-cooled atoms; Coherent population trapping; Two-level gain and collective recoil-induced effects; Fundamental physics of relativistic particles beams; High-gain free electron laser: theory, experiments and projects; Cooling of ion beams in a storage ring; Experiments on dense laser-cooled stored ion beams.
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 Physics And Applications Of High Brightness Electron Beams The Proceedings Of The Icfa Workshop written by James B Rosenzweig and published by World Scientific. This book was released on 2003-12-18 with total page 563 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the contributions to the Workshop on the Physics and Applications of High Brightness Electron Beams, held in July 2002 in Sardinia, Italy. This workshop had a broad international representation from the fields of intense electron sources, free-electron lasers, advanced accelerators, and ultra-fast laser-plasma, beam-plasma and laser-beam physics. The interdisciplinary participants were brought together to discuss advances in the creation and understanding of ultra-fast, ultra-high brightness electron beams, and the unique experimental opportunities in frontier high-energy-density and radiation-source physics which are offered by these scientific tools.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)
Download or read book Cyclotrons 1972 written by TRIUMF. and published by New York : American Institute of Physics. This book was released on 1972 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
