JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Senes, E. AU - Lefèvre, T. ED - Schaa, Volker R.W. ED - Batten, Tonia ED - Bree, Michael ED - Petit-Jean-Genaz, Christine ED - Hunter, Darren TI - Dielectric Pick-Up for Short Bunches J2 - Proc. of IBIC2023, Saskatoon, Canada, 10-14 September 2023 CY - Saskatoon, Canada T2 - International Beam Instrumentation Conference T3 - 12 LA - english AB - Novel acceleration schemes pose new challenges to the beam instrumentation required. This contribution presents a novel device to measure the beam position, enabling the discrimination of different co-propagating beams. The method leverages the characteristic properties of the Coherent Cherenkov-Diffraction Radiation (ChDR) emitted from dielectric inserts in the beampipe. The beam discrimination is performed in the frequency domain, exploiting the bunch length difference of the two beams. This device was developed for the AWAKE experiment, where not only an electron beam co-propagates with a more intense proton beam, but also traditional pickups are impacted by the environment polluted with spurious charges from the plasma. The electron beam discrimination takes place in a narrow band around 30 GHz. The overall design and results from the AWAKE experiment are presented. The utilisation of coherent ChDR to distinguish different co-propagating beams is a substantial novelty in the field, pushing the instruments capabilities for novel accelerating technologies, such as plasma-based accelerators. PB - JACoW Publishing CP - Geneva, Switzerland ER -