Experimental study of synchro-betatron coupling induced by dipole modulation
نویسندگان
چکیده
منابع مشابه
Orbit Hamiltonian, Synchrotron Oscillations and Synchro-betatron Coupling
Crowley-Milling and Rabinowitz [2] first discovered the synchro-betatron resonances driven by dispersion in rf cavities in NINA. They explained the mechanism of the resonances by considering the sudden change of energy by rf cavities that causes a sudden changes of the equilibrium orbit. Thus, betatron oscillations are excited. These are forced betatron oscillations driven by synchrotron oscill...
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We analyze the stop-band due to crab cavities for horizontal tunes that are either close to integers or close to half integers. The latter case is relevant for today’s electron/positron colliders. We compare this stop-band to that created by dispersion in an accelerating cavity and show that a single typical crab cavity creates larger stop-bands than a typical dispersion at an accelerating cavi...
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The measurement of the residual betatron coupling via skew quadrupole modulation is a new diagnostics technique that has been developed and tested at the Relativistic Heavy Ion Collider (RHIC) as a promising method for the linear decoupling on the ramp. By modulating the strengths of different skew quadrupole families the two eigentunes are precisely measured with the phase lock loop system. Th...
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Analytical expressions, in presence of skew quadrupoles errors, have been derived to estimate the betatron coupling contribution to the vertical beam size and emittance [1]. The treatment of the betatron coupling is based on the matrix transport perturbation and related eigen vectors. The advantage of this approach is to be free of the usual resonant approximation and to allows a compact formul...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1993
ISSN: 0031-9007
DOI: 10.1103/physrevlett.71.719