Pei Zhang
Broschiertes Buch

Beam Diagnostics in Superconducting Accelerating Cavities

The Extraction of Transverse Beam Position from Beam-Excited Higher Order Modes

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An energetic charged particle beam introduced to an rf cavity excites a wakefield therein. This wakefield can be decomposed into a series of higher order modes and multipoles, which for sufficiently small beam offsets are dominated by the dipole component. This work focuses on using these dipole modes to detect the beam position in third harmonic superconducting S-band cavities for light source applications. A rigorous examination of several means of analysing the beam position based on signals radiated to higher order modes ports is presented. Experimental results indicate a position resoluti...