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A Final Focus System For The Next Linear Collider
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Book Synopsis Next-Generation Linear Collider Final Focus System Stability Tolerances by :
Download or read book Next-Generation Linear Collider Final Focus System Stability Tolerances written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of final focus systems for the next generation of linear colliders has evolved largely from the experience gained with the design and operation of the Stanford Linear Collider (SLC) and with the design of the Final Focus Test Beam (FFTB). We will compare the tolerances for two typical designs for a next-generation linear collider final focus system. The chromaticity generated by strong focusing systems, like the final quadrupole doublet before the interaction point of a linear collider, can be canceled by the introduction of sextupoles in a dispersive region. These sextupoles must be inserted in pairs separated by a -I transformation (Chromatic Correction Section) in order to cancel the strong geometric aberrations generated by sextupoles. Designs proposed for both the JLC or NLC final focus systems have two separate chromatic correction sections, one for each transverse plane separated by a ''[beta]-exchanger'' to manipulate the [beta]-function between the two CCS. The introduction of sextupoles and bending magnets gives rise to higher order aberrations (long sextupole and chrome-geometries) and radiation induced aberrations (chromaticity unbalance and ''Oide effect'') and one must optimize the lattice accordingly.
Book Synopsis A Conceptual Design of Final Focus Systems for Linear Colliders by :
Download or read book A Conceptual Design of Final Focus Systems for Linear Colliders written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Linear colliders are a relatively recent development in the evolution of particle accelerators. This report discusses some of the approaches that have been considered for the design of Final Focus Systems to demagnify the beam exiting from a linac to the small size suitable for collisions at the interaction point. The system receiving the most attention is the one adopted for the SLAC Linear Collider. However, the theory and optical techniques discussed should be applicable to the design efforts for future machines.
Book Synopsis A Final Focus System for the Next Linear Collider by :
Download or read book A Final Focus System for the Next Linear Collider written by and published by . This book was released on 1995 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The final focus of the Next Linear Collider (NLC) demagnifies electron and positron beams of 250--750 GeV energy down to a transverse size of about 2.5 x 350 nm2 at the interaction point (IP). The basic layout, momentum bandwidth, vibration tolerances, wakefield effects, and the tunability of the proposed final focus design are discussed. Also a perspective is given on the crab cavity and on effects of the solenoid field in the interaction region.
Book Synopsis Final Focus Systems for Linear Colliders by :
Download or read book Final Focus Systems for Linear Colliders written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The final focus system of a linear collider must perform two primary functions, it must focus the two opposing beams so that their transverse dimensions at the interaction point are small enough to yield acceptable luminosity, and it must steer the beams together to maintain collisions. In addition, the final focus system must transport the outgoing beams to a location where they can be recycled or safely dumped. Elementary optical considerations for linear collider final focus systems are discussed, followed by chromatic aberrations. The design of the final focus system of the SLAC Linear Collider (SLC) is described. Tuning and diagnostics and steering to collision are discussed. Most of the examples illustrating the concepts covered are drawn from the SLC, but the principles and conclusions are said to be generally applicable to other linear collider designs as well. 26 refs., 17 figs. (LEW).
Book Synopsis This Indenture of Three Parts Made the Twentieth Day of July in the Twenty Ninth Year of the Reign of Our Sovereign Lord George the Third ... in the Year of Our Lord One Thousand Seven Hundred and Eighty Nine Between Joseph Sladen of the Town of Ffolkstour in the County of Kent Gentleman of the First Part John Jones of Stanford ... (only Son and Heir and Also Devisee of John Jones Late of Stanford ...) of the Second Part and Isaac Tournay of the Town and Port of Hythe in the Said County of Kent Gentleman (a Trustee ... Appointed by and for and on the Behalf of the Said John Jones) of the Third Part ... by :
Download or read book This Indenture of Three Parts Made the Twentieth Day of July in the Twenty Ninth Year of the Reign of Our Sovereign Lord George the Third ... in the Year of Our Lord One Thousand Seven Hundred and Eighty Nine Between Joseph Sladen of the Town of Ffolkstour in the County of Kent Gentleman of the First Part John Jones of Stanford ... (only Son and Heir and Also Devisee of John Jones Late of Stanford ...) of the Second Part and Isaac Tournay of the Town and Port of Hythe in the Said County of Kent Gentleman (a Trustee ... Appointed by and for and on the Behalf of the Said John Jones) of the Third Part ... written by and published by . This book was released on 1789 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A RECIPE FOR LINEAR COLLIDER FINAL FOCUS SYSTEM DESIGN. by :
Download or read book A RECIPE FOR LINEAR COLLIDER FINAL FOCUS SYSTEM DESIGN. written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of Final Focus systems for linear colliders is challenging because of the large demagnifications needed to produce nanometer-sized beams at the interaction point. Simple first- and second-order matrix matching have proven insufficient for this task, and minimization of third- and higher-order aberrations is essential. An appropriate strategy is required for the latter to be successful. A recipe for Final Focus design, and a set of computational tools used to implement this approach, are described herein. An example of the use of this procedure is given.
Book Synopsis Expanded Studies of Linear Collider Final Focus Systems at the Final Focus Test Beam by : Peter Gregory Tenenbaum
Download or read book Expanded Studies of Linear Collider Final Focus Systems at the Final Focus Test Beam written by Peter Gregory Tenenbaum and published by . This book was released on 1995 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Developments in Linear Colliders Final Focus Systems by :
Download or read book New Developments in Linear Colliders Final Focus Systems written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The length, complexity and cost of the present Final Focus designs for linear colliders grows very quickly with the beam energy. In this paper, a novel final focus system is presented and compared with the one proposed for NLC [1]. This new design is simpler, shorter and cheaper, with comparable bandwidth, tolerances and tunability. Moreover, the length scales slower than linearly with energy allowing for a more flexible design which is applicable over a much larger energy range.
Book Synopsis Expanded Studies of Linear Collider Final Focus Systems at the Final Focus Test Beam by :
Download or read book Expanded Studies of Linear Collider Final Focus Systems at the Final Focus Test Beam written by and published by . This book was released on 1995 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to meet their luminosity goals, linear colliders operating in the center-of-mass energy range from 3,50 to 1,500 GeV will need to deliver beams which are as small as a few Manometers tall, with x:y aspect ratios as large as 100. The Final Focus Test Beam (FFTB) is a prototype for the final focus demanded by these colliders: its purpose is to provide demagnification equivalent to those in the future linear collider, which corresponds to a focused spot size in the FFTB of 1.7 microns (horizontal) by 60 manometers (vertical). In order to achieve the desired spot sizes, the FFTB beam optics must be tuned to eliminate aberrations and other errors, and to ensure that the optics conform to the desired final conditions and the measured initial conditions of the beam. Using a combination of incoming-beam diagnostics. beam-based local diagnostics, and global tuning algorithms, the FFTB beam size has been reduced to a stable final size of 1.7 microns by 70 manometers. In addition, the chromatic properties of the FFTB have been studied using two techniques and found to be acceptable. Descriptions of the hardware and techniques used in these studies are presented, along with results and suggestions for future research.
Book Synopsis Linear Collider IR and Final Focus Introduction by :
Download or read book Linear Collider IR and Final Focus Introduction written by and published by . This book was released on 1991 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Linear Collider subgroup of the Accelerator Physics working group concerned itself with all aspects of the Next Linear Collider (NLC) design from the end of the accelerating structure to and through the interaction region. Within this region are: (1) a collimation section, (2) muon protection (of the detector from the collimator), (3) final focus system, (4) interaction point physics, and (5) detector masking from synchrotron radiation and beam-beam pair production. These areas of study are indicated schematically in Fig. 1. The parameters for the Next Linear Collider are still in motion, but attention has settled on a handful of parameter sets. Energies under consideration vary from 0.5 to 1.5 TeV in the center of mass, and luminosities vary from 1033 to 1034 cm−2s−1. To be concrete we chose as a guide for our studies the parameter sets labeled F and G, Table 1 from Palmer. These cover large and small crossing angle cases and 0.4 m to 1.8 m of free length at the interaction point.
Book Synopsis New Final Focus System for the SLAC Linear Collider by :
Download or read book New Final Focus System for the SLAC Linear Collider written by and published by . This book was released on 1991 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The final focus system of the SLC has been upgraded by replacing the final quadrupole magnets with higher gradient superconducting magnets positioned closer to the interaction point. The parameters of the new system have been chosen to be compatible with the SLD detector with a minimum of changes to other final focus components. Commissioning plans for the new system are also presented. 5 refs., 1 fig.
Book Synopsis Optical Tuning in the Arcs and Final Focus Sections of the Stanford Linear Collider by :
Download or read book Optical Tuning in the Arcs and Final Focus Sections of the Stanford Linear Collider written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, we present the experimental tuning procedures developed for the Arcs and for the Final Focus Section of the Stanford Linear Collider (SLC). Such tuning is necessary to maximize the luminosity, by minimizing the beam size at the interaction point, and to reduce backgrounds in the experiment. In the final Focus Section, the correction strategy must result from the principles of the optical design, which is based on cancellations between second order aberrations, and on the ability to measure micron-size beams typical of the SLC. In the Arcs, the corrections were designed after the initial commissioning, to make the system more error-tolerant, through a modification in the optical design, and to enable adjustments of the beam phase-space a the injection to the Final Focus System, through a harmonic perturbation technique inspired from circular accelerators. Although the overall optimization of the SLC is not entirely finished, an almost optimal set-up has been achieved for the optics of the Arcs and of the Final Focus Section. Beams with transverse sizes close to the nominal ones, of a few microns, have been obtained at the interaction point. We present and discuss our results and the optical limits to the present performance. 24 refs., 25 figs., 2 tabs.
Book Synopsis A Cytological Study of Artificial Parthenogenesis in Cumingia ... by : Margaret Morris
Download or read book A Cytological Study of Artificial Parthenogenesis in Cumingia ... written by Margaret Morris and published by . This book was released on 1917 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Focus System for TLC. written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A limit of the chromaticity correction for the final focus system of a TeV Linear Collider (TLC) is investigated. As the result, it becomes possible to increase the aperture of the final doublet with a small increase of the horizontal US function. The new optics design uses a final doublet of 0.5 mm half-aperture and 1.4 T pole-tip field. The length of the system is reduced from 400 m to 200 m by several optics changes. Tolerances for various machine errors with this optics are also studied. 5 refs., 7 figs., 2 tabs.
Book Synopsis Development of Beam Position Monitors for Final Focus Systems at the International Linear Collider by : Christina Jane Swinson
Download or read book Development of Beam Position Monitors for Final Focus Systems at the International Linear Collider written by Christina Jane Swinson and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optical Tuning in the Arcs and Final Focus Section of the Stanford Linear Collider by : Philip Sébastien Bambade
Download or read book Optical Tuning in the Arcs and Final Focus Section of the Stanford Linear Collider written by Philip Sébastien Bambade and published by . This book was released on 1989 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Novel Final Focus Design for High Energy Linear Colliders by :
Download or read book A Novel Final Focus Design for High Energy Linear Colliders written by and published by . This book was released on 2003 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The length, complexity and cost of the present Final Focus designs for linear colliders grows very quickly with the beam energy. In this letter, a novel final focus system is presented and compared with the one proposed for NLC. This new design is simpler, shorter and cheaper, with comparable bandwidth, tolerances and tunability. Moreover, the length scales slower than linearly with energy allowing for a more flexible design which is applicable over a much larger energy range.
