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Lcls Ii Undulator Tolerance Analysis
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Book Synopsis LCLS-II Undulator Tolerance Analysis by :
Download or read book LCLS-II Undulator Tolerance Analysis written by and published by . This book was released on 2012 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SLAC National Accelerator Laboratory is building a new FEL user facility, LCLS-II, as a major upgrade to the Linear Coherent Light Source (LCLS). The upgrade will include two new Free Electron Lasers (FELs), to generate soft (SXR) and hard x-ray (HXR) SASE FEL radiation, based on planar, variable gap hybrid undulators with two different undulator periods (SXU: 55 mm, HXU: 32 mm). An algebraic FEL tolerance analysis for the undulator lines, including tuning, alignment, and phase correction tolerances has been performed. The methods and results are presented in this paper.
Book Synopsis Berechnung der Konstanten der Teilreaktionen unter Einbeziehung der thermischen Phosgenbildung und -zersetzung by :
Download or read book Berechnung der Konstanten der Teilreaktionen unter Einbeziehung der thermischen Phosgenbildung und -zersetzung written by and published by . This book was released on 1938 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Free Electron Lasers 1997 by : J. Xie
Download or read book Free Electron Lasers 1997 written by J. Xie and published by Elsevier. This book was released on 2012-12-02 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains Part II of the proceedings of the conference on Free Electron Lasers, held in Beijing, August 1997. Part I appears in a special issue of Nuclear Instruments and Methods A.The last 20 years has seen different stages of FEL development. In these proceedings the reader will find descriptions of many new facilities, new experimental results, new applications, new theoretical developments and new simulation results. Attention is also focussed on the recent progress in experimental observations SASE. The contributions are from 150 scientists from 13 countries, ensuring broad, up-to-date research results from a dynamic field.
Book Synopsis Algorithms to Automate LCLS Undulator Tuning by :
Download or read book Algorithms to Automate LCLS Undulator Tuning written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Automation of the LCLS undulator tuning offers many advantages to the project. Automation can make a substantial reduction in the amount of time the tuning takes. Undulator tuning is fairly complex and automation can make the final tuning less dependent on the skill of the operator. Also, algorithms are fixed and can be scrutinized and reviewed, as opposed to an individual doing the tuning by hand. This note presents algorithms implemented in a computer program written for LCLS undulator tuning. The LCLS undulators must meet the following specifications. The maximum trajectory walkoff must be less than 5 [mu]m over 10 m. The first field integral must be below 40 x 10−6 Tm. The second field integral must be below 50 x 10−6 Tm2. The phase error between the electron motion and the radiation field must be less than 10 degrees in an undulator. The K parameter must have the value of 3.5000 ± 0.0005. The phase matching from the break regions into the undulator must be accurate to better than 10 degrees. A phase change of 113 x 2[pi] must take place over a distance of 3.656 m centered on the undulator. Achieving these requirements is the goal of the tuning process. Most of the tuning is done with Hall probe measurements. The field integrals are checked using long coil measurements. An analysis program written in Matlab takes the Hall probe measurements and computes the trajectories, phase errors, K value, etc. The analysis program and its calculation techniques were described in a previous note. In this note, a second Matlab program containing tuning algorithms is described. The algorithms to determine the required number and placement of the shims are discussed in detail. This note describes the operation of a computer program which was written to automate LCLS undulator tuning. The algorithms used to compute the shim sizes and locations are discussed.
Book Synopsis Synchrotron Radiation and Free-Electron Lasers by : Kwang-Je Kim
Download or read book Synchrotron Radiation and Free-Electron Lasers written by Kwang-Je Kim and published by Cambridge University Press. This book was released on 2017-03-23 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary concepts -- Synchrotron radiation -- Basic FEL physics -- 1D FEL analysis -- 3D FEL analysis -- Harmonic generation in high-gain FELs -- FEL oscillators and coherent hard X-rays -- Practical considerations and experimental results for high-gain FELs
Book Synopsis Coherent Radiation Effects in the LCLS Undulator by :
Download or read book Coherent Radiation Effects in the LCLS Undulator written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For X-ray Free-Electron Lasers such as LCLS and TESLA FEL, a change in the electron energy while amplifying the FEL radiation can shift the resonance condition out of the bandwidth of the FEL. The largest sources of energy loss is the emission of incoherent undulator radiation. Because the loss per electron depends only on the undulator parameters and the beam energy, which are fixed for a given resonant wavelength, the average energy loss can be compensated for by a fixed taper of the undulator. Coherent radiation has a strong enhancement proportional to the number of electrons in the bunch for frequencies comparable to or longer than the bunch dimension. If the emitted coherent energy becomes comparable to that of the incoherent emission, it has to be included in the taper as well. However, the coherent loss depends on the bunch charge and the applied compression scheme and a change of these parameters would require a change of the taper. This imposes a limitation on the practical operation of Free-Electron Lasers, where the taper can only be adjusted manually. In this presentation we analyze the coherent emission of undulator radiation and transition undulator radiation for LCLS, and estimate whether the resulting energy losses are significant for the operation of LCLS.
Book Synopsis Stability of the LCLS Undulator Hall by :
Download or read book Stability of the LCLS Undulator Hall written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Stability of mechanical and electrical offsets of the bpm's in the LCLS undulator section is critical to obtaining and maintaining stable FEL lasing. Simulations show that for the LCLS running at 1.5 Angstroms if the electron beam develops a 2 micron rms deviation from a perfectly straight line over a distance of about 10 meters, the FEL saturation length will increase by one gain length.[1] Nominally the feedback system will take changes in the electron beam trajectory, measured by the bpm's, calculate and apply orbit corrections relatively easily. However, the efficacy of this technique relies on the ability of the bpm system to detect real electron beam trajectory changes at the level of 1 micron rms. One source of error in the determination of the electron beam trajectory is through changes in the mechanical or electrical offsets of the bpm's. Such offset errors are erroneously imposed on the real beam trajectory by the feedback system. Bpm mechanical and electrical offsets can be determined by beam based alignment techniques using electron beams of different energies. However this measurement is time consuming and cannot be used during normal operation. Therefore it is of paramount importance to keep mechanical and electrical offsets as stable as possible--on the scale of a few microns over a period of at least a day. As part of the R & D for the NLC, studies were carried out in 1994 and 1996 in the FFTB tunnel where the LCLS undulator is to be housed, which measured magnet motion using a wire alignment system with an inherent resolution of 100 nm. The reference wires extended in four sections for a total length of about 440 feet starting near magnet QA2 near the muon shielding in the beam switchyard and ending about 85 feet out into the research yard section of the FFTB. The planned location for the LCLS undulator section partially overlaps the area where the measurements were made. Two papers were written describing measurements made with the system: one by Assmann, Salsberg and Montag, [2] and another by K. Floettmann[3]. I will discuss the results from these papers and what they imply for the LCLS. As both efforts were mainly interested in the effect of magnet motion on the obtainable electron beam spot size and the stability implications to future linear accelerators, they concentrated on finding the most stable conditions that could be obtained, even if such conditions could only be obtained for a short time and over a limited area. In the LCLS case it will be necessary to have adequate stability for essentially year round operation over the full 120 m length of the undulator and there is no possibility of choosing an alternate site which might be quieter. Approximately 80% of the tunnel where the measurements were made were within the relatively stable underground (beam switchyard) portion of the FFTB. Unfortunately for the LCLS, about 80% of the undulator will be located in the less stable above ground (research yard) region of the FFTB tunnel.
Download or read book دون كارلوس written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synchrotron Light Sources and Free-Electron Lasers by : Eberhard J. Jaeschke
Download or read book Synchrotron Light Sources and Free-Electron Lasers written by Eberhard J. Jaeschke and published by Springer. This book was released on 2016-05-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardly any other discovery of the nineteenth century did have such an impact on science and technology as Wilhelm Conrad Röntgen’s seminal find of the X-rays. X-ray tubes soon made their way as excellent instruments for numerous applications in medicine, biology, materials science and testing, chemistry and public security. Developing new radiation sources with higher brilliance and much extended spectral range resulted in stunning developments like the electron synchrotron and electron storage ring and the freeelectron laser. This handbook highlights these developments in fifty chapters. The reader is given not only an inside view of exciting science areas but also of design concepts for the most advanced light sources. The theory of synchrotron radiation and of the freeelectron laser, design examples and the technology basis are presented. The handbook presents advanced concepts like seeding and harmonic generation, the booming field of Terahertz radiation sources and upcoming brilliant light sources driven by laser-plasma accelerators. The applications of the most advanced light sources and the advent of nanobeams and fully coherent x-rays allow experiments from which scientists in the past could not even dream. Examples are the diffraction with nanometer resolution, imaging with a full 3D reconstruction of the object from a diffraction pattern, measuring the disorder in liquids with high spatial and temporal resolution. The 20th century was dedicated to the development and improvement of synchrotron light sources with an ever ongoing increase of brilliance. With ultrahigh brilliance sources, the 21st century will be the century of x-ray lasers and their applications. Thus, we are already close to the dream of condensed matter and biophysics: imaging single (macro)molecules and measuring their dynamics on the femtosecond timescale to produce movies with atomic resolution.
Book Synopsis LCLS Undulator Commissioning, Alignment, and Performance by :
Download or read book LCLS Undulator Commissioning, Alignment, and Performance written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The LCLS x-ray FEL has recently achieved its 1.5-Angstrom lasing and saturation goals upon first trial. This was achieved as a result of a thorough pre-beam checkout, both traditional and beam-based component alignment techniques, and high electron beam brightness. The x-ray FEL process demands very tight tolerances on the straightness of the electron beam trajectory (
Book Synopsis European Particle Accelerator Conference (Epac 94) (In 3 Volumes) by : Christine Petit-jean-genaz
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.
Book Synopsis Beam Instrumentation Workshop 2006 by : Thomas S. Meyer
Download or read book Beam Instrumentation Workshop 2006 written by Thomas S. Meyer and published by American Institute of Physics. This book was released on 2006-12-07 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 12th Beam Instrumentation Workshop addressed design principles and engineering issues of beam diagnostics and control instrumentation for charged particle accelerators and beam transport lines. The workshop provided a forum in which participants could exchange ideas and review instrumentation designs, and served as an introduction to relevant topics for engineers and scientists with the aid of tutorial sessions.
Book Synopsis Proceedings of the 1993 Particle Accelerator Conference by :
Download or read book Proceedings of the 1993 Particle Accelerator Conference written by and published by . This book was released on 1993 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Free Electron Lasers 2003 by : Eisuke J. Minehara
Download or read book Free Electron Lasers 2003 written by Eisuke J. Minehara and published by Newnes. This book was released on 2012-12-02 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the Proceedings of the 25th International Free Electron Laser Conference and the 10th Free Electron Laser Users Workshop, which were held on September 8-12, 2003 in Tsukuba, Ibaraki in Japan.
Book Synopsis The Physics of Particle Accelerators by : Klaus Wille (prof.)
Download or read book The Physics of Particle Accelerators written by Klaus Wille (prof.) and published by Clarendon Press. This book was released on 2000 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting from a historical overview of particle accelerator development and an emphasis on the importance of high energy particles in fundamental research, Wille (physics, U. of Dortmund) surveys many aspects of accelerator physics also relevant to other disciplines and develops relevant formulas step-by-step. Suitable for a senior undergraduate text. The translator is in the physics department at the U. of Bristol. First published in Germany in 1996. c. Book News Inc.
Book Synopsis Synchrotron Radiation Instrumentation by : Jae-Young Choi
Download or read book Synchrotron Radiation Instrumentation written by Jae-Young Choi and published by American Institute of Physics. This book was released on 2007-02-27 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SRI2006 Proceedings features the most recent developments in present synchrotron radiation sources. It also features up-to-date free electron lasers atphoton energies from the infrared to hard X-rays, beamline instrumentation to transport the radiation to the experiments, as well as experimental techniques to utilize it. Further included are recent experimental results in synchrotron radiation sciences.
Book Synopsis Brilliant Light in Life and Material Sciences by : Vasili Tsakanov
Download or read book Brilliant Light in Life and Material Sciences written by Vasili Tsakanov and published by Springer Science & Business Media. This book was released on 2007-03-31 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains an excellent overview of the status and highlights of brilliant light facilities and their applications in biology, chemistry, medicine, materials and environmental sciences. Overview papers on diverse fields of research by leading experts are accompanied by the highlights in the near and long-term perspectives of brilliant X-Ray photon beam usage for fundamental and applied research.
