Author: Tropp, A.
Paper Title Page
MOPOJO19 Programmable SLED System for Single Bunch and Multibunch Linac Operation 73
 
  • C. Christou, P. Gu, A. Tropp
    DLS, Oxfordshire, United Kingdom
 
  The Diamond Light Source pre-injector linac generates single bunch and multibunch 100 MeV electron beams for top-up and fill of the storage ring. The linac is powered by two high-power 3 GHz klystrons, and both klystrons are required for reliable injection into the booster and storage ring. In order to introduce redundancy, a SLED pulse compression cavity has been installed so that the linac can operate from just one klystron, with the second klystron held as a standby. A simple phase flip can be used to generate a high-power transient RF spike, suitable for single bunch linac operation, and a programmable amplitude and phase drive profile can be specified to generate a constant-power klystron output suitable for multibunch operation. Details are presented of design, installation and high-power operation of the SLED system, and the ability to generate a long pulse, including corrections for klystron nonlinearity and deviations from modulator flat-top, is demonstrated.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOJO19  
About • Received ※ 09 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 02 September 2022 — Issue date ※ 08 September 2022
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