Khan Collective Phenomena in Synchrotron Radiation Sources

Prediction, Diagnostics, Countermeasures
1. Auflage 2007
ISBN: 978-3-540-34313-4
Verlag: Springer-Verlag
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 203 Seiten

This book is intended to dispel the notion that collective phenomena are an obscure and inaccessible topic. Having become increasingly important in modern storage rings, collective e?ects deserve to become part of the general education in accelerator physics. ItriedtowritethebookIwaslookingforwhenIstartedtostudycollective instabilities: an introduction that can be read from cover to cover with m- erate e?ort and familiarizes the reader with the basic concepts. Self-contained appendices contain what I considered worth discussing but might impair the readability of the main text, such as a reminder of basic relations and some background information on selected topics. Finally, an extensive list of r- erences was compiled (with some emphasis on accessibility of the source) in order to facilitate the search for more detailed information. A previous version of the present text was submitted in German language as Habilitationsschrift – a postdoctoral thesis, which is a peculiarity of the German academic system – to the Humboldt University of Berlin. It grew from my occupation with collective phenomena over ten years at the thi- generation synchrotron light source BESSY II. This has some consequences regarding the character of this text: • Thereisaclearemphasisonsynchrotronlightsourcesandelectronstorage rings. However, many concepts (wake ?eld, impedance, beam spectrum, beam lifetime, etc.) are quite general. • The selection of material re?ects my personal experience and some readers may want to skip over details that I considered important, while others may ?nd that their favorite topic was not covered in su?cient detail.

Autoren/Hrsg.

Khan, Shaukat

Inhaltsverzeichnis

1;Preface;6
2;Contents;8
3;1 Introduction;12
3.1;1.1 Definition of the Topic;12
3.2;1.2 Outline;14
4;2 Collective Instabilities;15
4.1;2.1 Overview;15
4.2;2.2 The Frequency Spectrum of a Stored Beam;18
4.3;2.3 Wake Field and Impedance;28
4.4;2.4 Models of Instabilities;43
4.5;2.5 Natural Damping Mechanisms;59
4.6;2.6 Impedance Measurements Using the Beam;62
5;3 The Lifetime of a Stored Electron Beam;68
5.1;3.1 Overview;68
5.2;3.2 Quantum Lifetime;72
5.3;3.3 Residual Gas Scattering;73
5.4;3.4 The Touschek Effect;78
5.5;3.5 The Total Beam Lifetime;81
5.6;3.6 Experimental Determination of Loss Rates;83
6;4 Measures Against Collective Effects;88
6.1;4.1 Overview;88
6.2;4.2 Active Damping of Instabilities;94
6.3;4.3 Example of a Longitudinal Feedback System;97
6.4;4.4 Example of a Transverse Feedback System;112
6.5;4.5 Other Feedback Systems and New Developments;121
6.6;4.6 Higher-Harmonic Cavities;123
7;5 Conclusions and Outlook;128
7.1;5.1 Summary;128
7.2;5.2 Future Synchrotron Radiation Facilities;129
8;A Basic Relations in Accelerator Physics;136
8.1;A.1 General Conventions;136
8.2;A.2 Transverse Phase Space;138
8.3;A.3 Longitudinal Phase Space;143
9;B Third-Generation Synchrotron Radiation Sources;146
9.1;B.1 Overview;146
9.2;B.2 The Synchrotron Radiation Source BESSY II;147
10;C Longitudinal Instabilities: Vlasov Formalism;156
10.1;C.1 The Vlasov Equation;156
10.2;C.2 The Instability Model;157
11;D Beam Loading;160
11.1;D.1 Basic Relations;160
11.2;D.2 Applications;162
12;E Longitudinal and Transverse Kickers;167
12.1;E.1 Kicker Cavities;168
12.2;E.2 Stripline Kickers;171
13;F The Touschek Effect;174
13.1;F.1 Scattering in the Center-of-Momentum System;174
13.2;F.2 Loss Rate in the Laboratory System;175
14;G Ion Effects in Electron Storage Rings;179
14.1;G.1 Ionization and Ion Trapping;179
14.2;G.2 The "Fast” Beam–Ion Instability;181
15;H Address List;183
15.1;H.1 Accelerators and Storage Rings;183
15.2;H.2 Institutions;184
16;References;186
17;Index;205