Characterisation of Electro-Optic Pickups for High Bandwidth Diagnostics at the High Luminosity LHC

Alberto Arteche, Sophie Bashforth, Alessio Bosco, Stephen Gibson, Inada Penman, Michal Krupa, Thibaut Lefevre

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A high bandwidth electro-optical beam position monitor is under development for the High Luminosity LHC. A series of measurements of the electro-optic signals were previously obtained by an EO-BPM prototype installed in the SPS. This paper focuses on an advanced design that would further improve the sensitivity of the pick-up by optimising the shape of the metallic electrode mounted onto the crystal. The proposed upgraded electro-optic pickups significantly increase the image field profile of the passing bunch inside a lithium niobate crystal embedded within the pickup. This work is based on parametric studies, performed using CST particle studio, investigating various electro-optic (electrode and crystal) configurations. We present the expected performance of the different designs, alongside with their evaluation on a test bench, highlighting the most relevant choice for a prototype pick-up to be installed on LHC.
Original languageEnglish
Title of host publication10th International Particle Accelerator Conference
PublisherJACoW Publishing
Number of pages4
ISBN (Electronic)978-3-95450-208-0
Publication statusPublished - 21 Jun 2019

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