The world’s first experimental observation and achievement of ‘optical stochastic cooling’ (i.e., relativistic charged particles cooled via feedback from their own optical radiation) in the IOTA storage ring at Fermilab, USA was reported in Nature, August 11, 2022. Recapturing that achievement, I will report on further progress in optical stochastic cooling in IOTA to date. The method has...
AWAKE studies and develops a plasma wakefield accelerator driven by a long proton bunch to produce high-energy electrons for application to particle physics at CERN. It relies on the self-modulation of a cm-long, 400GeV proton bunch to reach ~1GV/m accelerating fields. It is also a platform to study beam-plasma interactions. I will introduce the project and experiment. I will show...
The CERN accelerator complex provides beams for a highly diverse, world class fixed-target research programme, which complements its flag-ship collider physics programme. At the same time, it enables an extensive and highly versatile test beam and irradiation programme, which is essential for the design, prototyping and construction of future physics experiments and new accelerator...
Radioactive ion beam facilities employ accelerated particles to produce exotic isotopes for experiments in fields ranging from nuclear, atomic and solid-state physics, to biophysics and medicine. A key subset of these facilities is the thick target Isotope Separator Online or ISOL type, where the irradiated material is thick enough to stop and thermalise the nuclear reaction products prior to...
The future high repetition rate upgrade of the EuXFEL assumes the implementation of a continuous wave (CW) electron source. A CW photoinjector based on the 1.3 GHz SRF gun cavity is the preferred option for EuXFEL. Recently, we demonstrated the possibility of achieving a peak axial electric field of 55 MV/m with a copper photocathode installed. Further steps include advanced metal photocathode...
