The Berlin Energy Recovery LINAC Project (bERLinPro), a 100-mA, 50-MeV ERL design was originally conceived to demonstrate ERL technology for use in a future high-brilliance light source at HZB. This endeavor was officially ended in 2020 and the facility transferred into the commissioning stage.
The full infrastructure for ERL operation, including cryogenics, high-power RF, the UHV vacuum system, beam diagnostics, magnets and complete beam transport is installed. SRF cavity systems for a photoinjector and booster of the injector path are currently being assembled.
bERLinPro now serves as a general accelerator test facility to explore a broadening set of technologies and applications from SRF photoinjectors and high-power SRF-based energy recovery to ultrafast electron diffraction (UED) that takes advantage of the unique properties of the SRF-based injector. Presently, the commissioning of the ca. 10-mA SRF photoinjector is under way, followed by the assembly of the booster module. In future, plans are to explore the 10 – 100 mA beam current range. This includes the potential to use bERLinPro/SEALab to explore technologies and concepts that are key elements of the European Accelerator Roadmap for particle physics, e.g. explore pathways towards a more sustainable large scale science driver. In midterm, the SRF photoinjector commissioning starts autumn 2023 and we expect first beam around early 2024.
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270 kW CW 1.3 GHz klystron from CPI
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Example of local cleanroom for installing the beam vacuum system
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Recirculator and linac cryo coldbox in the center
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SRF Gun cryo-module view from the side with one fundamental power coupler port
Some references:
- B. Alberdi et al., Sci. Rep. 12, 13365 (2022)
- M. Abo-Bakr et al., “Status Report of the Berlin Energy Recovery Linac Project bERLinPro”, in Proc. 9th Int. Particle Accelerator Conf. (IPAC'18), Vancouver, BC, Canada, Apr. 4, pp. 4127-4130, doi:10.18429/JACoW-IPAC2018-THPMF034
- A. Neumann et al., “The BERLinPro SRF Photoinjector System - From First RF Commissioningto 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
- M. Schmeisser et al., PRAB 21, 113401 (2018), doi:10.1103/PhysRevAccelBeams.21.113401
- A. Neumann et al., “High Power Coupler Conditioning for bERLinPro Energy Recovery Linac Injector”, in Proc. IPAC‘21, Campinas, SP, Brazil, May 2021, pp. 1080-1083, doi:10.18429/JACoW-IPAC2021-MOPAB347