摘要:

Beam dynamics of synchrotrons is reviewed. The Hamiltonian formulation is emphasized and synchrotron and betatron oscillations are discussed in detail. (AIP)

ISSN:0094-243X    

DOI:10.1063/1.42001

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Betatron and profile oscillations in linear accelerators are discussed. Beam monitoring techniques are compared. (AIP)

ISSN:0094-243X    

DOI:10.1063/1.41976

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The article provides a comprehensive account of beam phase‐lock control and radial control, including the stability criteria for a variety of closed‐loop configurations. The effects of elementary signal processing, parasitic time constants, and cabling delays are treated at length.

ISSN:0094-243X    

DOI:10.1063/1.41986

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

A systematic review of theoretical results for the longitudinal and transverse impedances obtained by different methods is presented. The paper comprises definitions, general theorems, modal analysis, a diffraction model, and analytical results. Several new results are included. In particular, necessary and sufficient conditions are given for the independence of the impedance from the beam longitudinal direction. The impedances of two basic simple structures—that of acavityand that of astep—are studied in detail. The transition from the regime of a cavity to the regime of a step is explained, an approximate formula describing this transition is given, and the criterion for determining the applicability of each regime is established. The asymptotic behavior of the impedance for a finite numberMof periodically arranged cavities as a function ofMis studied. The different behaviors of the impedance for a single cavity and that for an infinite number of cavities are explained as resulting from the interference of the diffracted waves. A criterion for determining the transition in the impedance behavior from smallMto largeMis presented.

ISSN:0094-243X    

DOI:10.1063/1.41997

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Beam pipe and waveguide impedances are calculated and waveguide—cavity coupling is discussed. The penetration of electromagnetic fields through a hole of general shape is considered. (AIP)

ISSN:0094-243X    

DOI:10.1063/1.41998

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0094-243X    

DOI:10.1063/1.41999

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The mathematical techniques used in beam dynamics calculations are reviewed. Topics include power series operations, lie transformations, and Taylor map trackings. Betatron oscillations are computed. (AIP)

ISSN:0094-243X    

DOI:10.1063/1.42000

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Besides the mere tracking of individual particles through an accelerator lattice, it is often helpful to study the corresponding phase‐space map relating initial and final coordinates. Recent years have seen an advance in the ability to compute high‐order maps for rather complex systems including accelerator lattices. Besides providing insight, the maps allow treatment of the lattice without approximations, allowing thick elements, fringe‐field effects and even radiation, which is often prohibitive in the case of pure tracking. At the core of the computation of maps for realistic systems are the differential algebraic (DA) techniques.Besides the computation of maps, the DA methods have recently proven useful for the computation of many properties of the maps in a rather direct way. In particular, these properties include parameter tune shifts, amplitude tune shifts, and pseudo invariants. The methods presented here do not rely on Lie algebraic methods and are noticeably more direct and in many cases more efficient. Not relying on canonical techniques, they are also applicable to non‐symplectic systems and allow a study of damping phenomena in repetitive systems.

ISSN:0094-243X    

DOI:10.1063/1.41975

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Using the proposed B‐factory at KEK, as an example, beam bunching effects in storage rings are reviewed. (AIP)

ISSN:0094-243X    

DOI:10.1063/1.41977

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The design of lenses for linear colliders with a desired spot size is considered. The effects of synchrotron radiation and chromatic aberrations are discussed. (AIP)

ISSN:0094-243X    

DOI:10.1063/1.41978

出版商:AIP    

年代:1992

数据来源: AIP