We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byDestiny Hart
Modified over 3 years ago
Neil Marks; DLS/CCLRC Lecture to Cockcroft Institute 2005/6. © N.Marks MMIV Magnets interactions with beam. Neil Marks, DLS/CCLRC, Daresbury Laboratory, Warrington WA4 4AD, U.K. Tel: (44) (0)1925 603191 Fax: (44) (0)1925 603192
Neil Marks; DLS/CCLRC Lecture to Cockcroft Institute 2005/6. © N.Marks MMIV Dipoles Dipoles can be: Parallel ended dipole. Sector dipole These dipoles have different focusing effect on the beam; (the curved nature is to save material and has no effect on beam focusing).
Neil Marks; DLS/CCLRC Lecture to Cockcroft Institute 2005/6. © N.Marks MMIV End focusing effects Sector dipoles focus horizontally : The end field in a parallel ended dipole focuses vertically : B beam Off the vertical centre line, the field component normal to the beam direction produces a vertical focusing force. B
Neil Marks; DLS/CCLRC Lecture to Cockcroft Institute 2005/6. © N.Marks MMIV Upright quadrupole field. Beam that is radially focused is vertically defocused.
Neil Marks; DLS/CCLRC Lecture to Cockcroft Institute 2005/6. © N.Marks MMIV Beam that has radial displacement (but no vertical) is deflected vertically; horizontally central beam with vertical displacement is deflected radially; so skew quadrupole couples horizontal and vertical betatron oscillations. Skew quadrupole field.
Neil Marks; DLS/CCLRC Lecture to Cockcroft Institute 2005/6. © N.Marks MMIV Sextupole field. +C -C +C -C +C -C By x off-momentum particles are incorrectly focused in quadrupoles (eg, high momentum particles with greater rigidity are under-focused), so betatron oscillation frequencies are modified - chromaticity; but off momentum particles circulate with a radial displacement (high momentum particles at larger x); so positive sextupole field corrects this effect – can reduce chromaticity to 0; we shall also see that the first allowed error harmonic in a dipole is sextupole field – resulting negative chromaticity requires correction.
Neil Marks; DLS/CCLRC Lecture to Cockcroft Institute 2005/6. © N.Marks MMIV Octupole field Effect? By x 3 Octupole field induces Landau damping : introduces tune-spread as a function of betatron amplitude; de-coheres betatron oscillations; reduces couplings.
Neil Marks; DLS/CCLRC L ecture to Cockcroft Institute 2005/6. © N.Marks MMIV Resonances Neil Marks, DLS/CCLRC, Daresbury Laboratory, Warrington WA4 4AD,
Lecture 4 Longitudinal Dynamics I Professor Emmanuel Tsesmelis Directorate Office, CERN Department of Physics, University of Oxford ACAS School for Accelerator.
Frequency Map Analysis Workshop 4/2/2004 Peter Kuske Refinements of the non-linear lattice model for the BESSY storage ring P. Kuske Linear Lattice My.
A U.S. Department of Energy Office of Science Laboratory Operated by The University of Chicago Office of Science U.S. Department of Energy Containing a.
Chromaticity shift induced by misalignment of Landau Octupole Magnets Neal Anderson Department: BE-ABP Advisor: Rogelio Tomas Mentor: Ewen Maclean LHC.
Contents: Lattices and TWISS Parameters Tune Calculations and Corrections Dispersion Momentum Compaction Chromaticity Sextupole Magnets
Lecture 3 - E. Wilson - 22 Oct 2014 –- Slide 1 Lecture 3 - Magnets and Transverse Dynamics I ACCELERATOR PHYSICS MT 2014 E. J. N. Wilson.
Possibility of narrow-band THz CSR by means of transient H/L coupling NewSUBARU, LASTI, University of Hyogo Y. Shoji.
Introduction to particle accelerators Walter Scandale CERN - AT department Roma, marzo 2006.
Resonances introduction: driven oscillators and resonance condition
Professor Philip Burrows John Adams Institute for Accelerator Science Oxford University ACAS School for Accelerator Physics January 2014 Longitudinal Dynamics.
Neil Marks; DLS/CCLRC Cockcroft Institute 2005/6. Injection and Extraction into/out of Accelerators Neil Marks, DLS/CCLRC, Daresbury Laboratory, Warrington.
Beam Loss Simulation in the Main Injector at Slip-Stacking Injection A.I. Drozhdin, B.C. Brown, D.E. Johnson, I. Kourbanis, K. Seiya June 30, 2006 A.Drozhdin.
Resonances field imperfections and normalized field errors smooth approximation for motion in accelerators perturbation treatment chaotic particle motion.
AC dipole for LHC Mei Bai Collider Accelerator Department Brookhaven National Laboratory.
Eric Prebys, FNAL. In terms of total charge and current In terms of free charge an current USPAS, Knoxville, TN, January 20-31, 2013 Lecture 2 - Basic.
Lattice calculations: Lattices Tune Calculations Dispersion Momentum Compaction Chromaticity Sextupoles Rende Steerenberg (BE/OP) 17 January 2012 Rende.
Lecture 5 - E. Wilson - 6/29/ Slide 1 Lecture 5 ACCELERATOR PHYSICS MT 2014 E. J. N. Wilson.
Simulation of direct space charge in Booster by using MAD program Y.Alexahin, A.Drozhdin, N.Kazarinov.
Frequency map analysis workshop - Orsay 1 - 2/04/04Mahdia Belgroune 1 Role of the frequency map analysis in the choice of the working point of SOLEIL M.
© 2017 SlidePlayer.com Inc. All rights reserved.