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Higher Order Mode Analysis Of The Apt Superconducting Cavities
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Book Synopsis Higher Order Mode Analysis of the APT Superconducting Cavities by :
Download or read book Higher Order Mode Analysis of the APT Superconducting Cavities written by and published by . This book was released on 1997 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In another contribution to this conference the design of superconducting cavities for low velocity proton beams will be reported. Besides an optimization of the rf properties of the accelerating [pi]-mode, other modes, possibly excited by the traversing proton beam, need to be regarded. The full spectrum of modes in [beta] = 0.64 and [beta] = 0.82 5-cell cavities, as proposed for the Accelerator Production of Tritium (APT) facility, has been calculated up to frequencies higher than 2.0 GHz. These have been evaluated for their potential to affect the beam. The presence of {open_quotes}trapped{close_quotes} modes has also been investigated. In addition to the specific mode spectrum, the total power deposited into the cavities by the beam has been determined from the induced wake-fields. Due to the operation with beams below the velocity of light, extreme care was required to prevent incorrect results by wave reflections from the boundaries of the calculation volume. The simulations indicate that a power deposition of up to 17 W per cavity can be expected in the worst case. This power might have to be removed by higher order mode couplers, which is a technically feasible task. Transporting this power out to a room temperature dump does not even noticeably increase the requirements to the cryogenic system. Also for the prevention of beam break-up effects and for suppression of resonant excitation of specific higher order modes (HOMs) it is of interest to investigate the removal of this HOM-power. Different approaches to implement this removal technically are entertained.
Book Synopsis Split Higher Order Modes in Superconducting Cavities by :
Download or read book Split Higher Order Modes in Superconducting Cavities written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis STRUCTURAL ANALYSIS OF APT SUPERCONDUCTING CAVITIES. by :
Download or read book STRUCTURAL ANALYSIS OF APT SUPERCONDUCTING CAVITIES. written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Higher Order Mode Properties of Superconducting Two-Spoke Cavities by :
Download or read book Higher Order Mode Properties of Superconducting Two-Spoke Cavities written by and published by . This book was released on 2011 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-Spoke cavities lack the cylindrical symmetry that many other cavity types have, which leads to a more complex Higher Order Mode (HOM) spectrum. In addition, spoke cavities offer a large velocity acceptance which means we must perform a detailed analysis of the particle velocity dependence for each mode's R/Q. We present here a study of the HOM properties of two-spoke cavities designed for high-velocity applications. Frequencies, R/Q and field profiles of HOMs have been calculated and are reported.
Book Synopsis High Precision Superconducting Cavity Diagnostics With Higher Order Mode Measurements by :
Download or read book High Precision Superconducting Cavity Diagnostics With Higher Order Mode Measurements written by and published by . This book was released on 2007 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments at the FLASH facility at DESY have demonstrated that the higher order modes induced in superconducting cavities can be used to provide a variety of beam and cavity diagnostics. The axes of the modes can be determined from the beam orbit that produces minimum power in the dipole HOM modes. The phase and amplitude of the dipole modes can be used to obtain high resolution beam position information, and the phase of the monopole modes to measure the beam phase relative to the accelerator rf. For most superconducting accelerators, the existing higher order mode couplers provide the necessary signals, and the downmix and digitizing electronics are straightforward, similar to those for a conventional beam position monitor.
Book Synopsis Static and Dynamic Analysis of the APT Superconducting Cavities by :
Download or read book Static and Dynamic Analysis of the APT Superconducting Cavities written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Static and dynamic analysis of 4-, 6-, and 12-cell [beta]=0.428 niobium cavities proposed for the superconducting linac for the Accelerator Production of Tritium were carried out using COSMOS/M[copyright], a commercial finite-element code. The benefits of external stiffeners, the tuning sensitivities, and the mechanical resonant frequencies are reported.
Book Synopsis Proceedings of the 1997 Particle Accelerator Conference by :
Download or read book Proceedings of the 1997 Particle Accelerator Conference written by and published by . This book was released on 1998 with total page 1322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Higher Order Mode-based Beam and Cavity Diagnostics in 1.3 GHz Superconducting Cavities at FLASH by : Junhao Wei
Download or read book Higher Order Mode-based Beam and Cavity Diagnostics in 1.3 GHz Superconducting Cavities at FLASH written by Junhao Wei and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Numerical Study of Superconducting Cavity Components by :
Download or read book A Numerical Study of Superconducting Cavity Components written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer programs which solve Maxwell's equations in three dimensions are becoming an invaluable tool in the design of RF structures for particle accelerators. In particular, the lack of cylindrical symmetry of superconducting cavities with waveguide couplers demands a 3-D analysis for a reasonable description of a number of important phenomena. A set of codes, collectively known as MAFIA, developed by Weiland and his collaborators, has been used at CEBAF to study its five-cell superconducting accelerating cavities. The magnitude of RF crosstalk between cavities is found to depend critically on the breaking of cylindrical symmetry by the fundamental power couplers. A model of the higher order mode coupler exhibits an unexpected mode which is in good agreement with measurement.
Book Synopsis Higher Order Mode Spectra and the Dependence of Localized Dipole Modes on the Transverse Beam Position in Third Harmonic Superconducting Cavities at FLASH by : Pei Zhang
Download or read book Higher Order Mode Spectra and the Dependence of Localized Dipole Modes on the Transverse Beam Position in Third Harmonic Superconducting Cavities at FLASH written by Pei Zhang and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Higher Order Mode Measurements on the HERA Superconducting Cavity Module by : D. Tong
Download or read book Higher Order Mode Measurements on the HERA Superconducting Cavity Module written by D. Tong and published by . This book was released on 1987 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis HOMSC12, High-Order-Mode Diagnostics and Suppression in Superconducting Cavities by :
Download or read book HOMSC12, High-Order-Mode Diagnostics and Suppression in Superconducting Cavities written by and published by . This book was released on 2014 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ICFA Mini Workshop on High Order Modes in Superconducting Cavities by : Nicoleta Baboi
Download or read book ICFA Mini Workshop on High Order Modes in Superconducting Cavities written by Nicoleta Baboi and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Normal Mode Analysis of the CEBAF Accelerator Upgraded Superconducting Cavities by : Tommy Hiatt
Download or read book Normal Mode Analysis of the CEBAF Accelerator Upgraded Superconducting Cavities written by Tommy Hiatt and published by . This book was released on 1999 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of HOM Properties of Superconducting Parallel-Bar Deflecting/Crabbing Cavities by :
Download or read book Analysis of HOM Properties of Superconducting Parallel-Bar Deflecting/Crabbing Cavities written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The superconducting parallel-bar cavity is currently being considered for a number of deflecting and crabbing applications due to improved properties and compact design geometries. The 499 MHz deflecting cavity proposed for the Jefferson Lab 12 GeV upgrade and the 400 MHz crab cavity for the proposed LHC luminosity upgrade are two of the major applications. For high current applications the higher order modes must be damped to acceptable levels to eliminate any beam instabilities. The frequencies and R/Q of the HOMs and mode separation are evaluated and compared for different parallel-bar cavity designs.
Book Synopsis Higher-order-mode Diagnostics and Suppression in Superconduction Cavities (HOMSC 12) by :
Download or read book Higher-order-mode Diagnostics and Suppression in Superconduction Cavities (HOMSC 12) written by and published by . This book was released on 2014 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Higher Order Modes in Superconducting Accelerating Structures for Linac Applications by : Marcel Daniel Schuh
Download or read book Study of Higher Order Modes in Superconducting Accelerating Structures for Linac Applications written by Marcel Daniel Schuh and published by . This book was released on 2011 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
