Speaker
Description
The Advanced Photon Source (APS) upgrade seeks higher X-ray brilliance. One of the methods of achieving this is through increased stored beam current, which increases the demand on the thermionic electron source nominally used in the injector. To explore possible improvements in the thermionic electron source’s performance, we are developing the first full end-to-end, space-charge-inclusive model of the APS Injector Test Stand (ITS), including a novel description of the thermionic gun and all downstream beamline components. ITS is an independent test facility that mimics the APS injector linac. The developed model enables us to quantify how beam energy, energy spread, emittance, and transverse phase-space evolution depend on cathode temperature, position, and extraction fields. The extensive suite of beam diagnostics available at ITS will benchmark the model and validate emission and space-charge physics. The combined numerical–experimental study will identify conditions enabling higher bunch charge, directly supporting injector optimization for the APS upgrade, improving understanding of thermionic emission sources, and informing the potential use of the ITS as a compact, high-brightness THz-radiation source for pump–probe experiments.
| In which format do you inted to submit your paper? | Word |
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