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| WEPNEC21 |
Decoupling Cathode and Lattice Emittance Contributions from a 100 pC, 100 MeV Electron Injector System |
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- N.P. Norvell
SLAC, Menlo Park, California, USA
- M.B. Andorf, I.V. Bazarov, C.M. Gulliford, J.M. Maxson
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
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We present simulation results to decouple the emittance contributions that are intrinsic from the injector lattice versus emittance contributions due to the quality of the cathode out of a 100 MeV electron injector system. Using ASTRA driven by the NSGA-II genetic algorithm, we optimized the LCLS-II injector system with a zero emittance cathode. We then imposed FEL specific energy constraints and show how the Pareto Front solution shifts. Lastly, we reoptimized at various cathode emittances to map out the dependence of cathode emittance versus final emittance out of the injector system. We then determined the cathode quality needed to hit a 0.1 mm mrad 95% rms transverse emittance specification out of the current LCLS-II injector system.
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Poster WEPNEC21 [3.227 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-ERL2019-WEPNEC21
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| About • |
paper received ※ 01 October 2019 paper accepted ※ 07 November 2019 issue date ※ 24 June 2020 |
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