Speaker
Description
After about a decade of research, development and construction work, the bERLinPro Energy Recovery Linac project at HZB changed over into the commissioning phase and started the operation of the SRF photo-injector with the injection line of the accelerator. This system had already produced beam from a metal photo-cathode in 2018 [1] in a dedicated test environment and was assembled in the accelerator hall after a required refurbishment and repair program [2]. The 1.3 GHz SRF gun successfully generated first photoemission beam from a high quantum efficiency (QE) Na-based multi-alkali photocathode. In this contribution, the results of the first two measurement campaigns will be shown, including a review of the SRF design, the RF commissioning, the cavity performance, especially with respect to dark current, the cathode quantum efficiency and lifetime, as well as the measured beam parameters.
Funding Agency
The work is funded by the Helmholtz-Association, BMFTR, the state of Berlin and HZB.
Footnotes
[1] A. Neumann et al., “The BERLinPro SRF Photoinjector System - From First RF Commissioning to First Beam”, in Proc. 9th Int. Particle Accelerator Conf. (IPAC'18), Vancouver, BC, Canada, Apr. 4,, pp. 1660-1663, doi:10.18429/JACoW-IPAC2018-TUPML053
[2] Yegor Tamashevich et al 2024 Eng. Res. Express 6 025009
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