Table of ContentsLIFETIME AND DYNAMIC APERTURE STUDIES AT THE ADVANCED LIGHT SOURCE Overview Overview over the ALS Optical Functions Beam Lifetime - Touschek Effect Beam Lifetime-Gas Scattering Lifetime as a Function of Total Current Lifetime versus Bunch Current Lifetime, ID position, Beam Size Summary of Lifetime Contributions The Aperture Momentum Aperture: Momentum Loss at Position s Position Dependent Momentum Aperture Different Aperture Components Dynamic Aperture Tune Diagram Beam Losses at Different Tunes Particle Tracking Information 3 Tunes + Simple Model Measurements of Momentum Aperture Dependency of Lifetime on Longitudinal Aperture RF-Acceptance at Different Working-Points RF-Acceptance versus Wiggler and Skew Quad RF-Acceptance at Different Chromaticities Nominal Tune, 2 Chromaticities Transverse Acceptance and Gas Lifetime Dependency of Lifetime on Transverse Aperture Aperture Measurements with Pinger Magnet Aperture Measurement with Momentum Deviation Aperture Measurements and Tracking Results I Aperture Measurement II: Different Tune Aperture Measurement III: Wiggler closed Aperture Measurement IV: High Coupling Aperture Measurements I-IV Conclusion |
Author: Winni Decking
Email: winfried.decking@desy.de Home Page: desy.de/~wdecking |