Ramos Garcia, M.T. Andreazza, W. Bestmann, P. Bursali, H. Chritin, N.S. Devauchelle, W. Harrison, A. Khatri, G. McLean, M. Pasquino, C. Sanda, F. Schwarz, P. Storey, J.W. Veness, R. Vollenberg, W. Vollinger, C. JACoW Publishing Geneva, Switzerland 2673-5520 978-3-95450-250-9 10.18429/JACoW-MEDSI2023-TUPYP054 English 114-117 vacuum electron detector impedance proton Contribution to a conference proceedings 2024 2024-07 https://doi.org/10.18429/JACoW-MEDSI2023-TUPYP054 https://jacow.org/medsi2023/papers/tupyp054.pdf The Beam Gas Ionisation (BGI) instrument of the Proton Synchrotron (PS), presently installed and operational, has been re-designed for the Super Proton Synchrotron (SPS), the following machine along the Large Hadron Collider (LHC) injector chain at CERN accelerator complex. Using the same detection technology, Timepix3, the SPS-BGI infers the beam profile from the electrons created by the ionisation of rest gas molecules and accelerated onto an imaging detector. This measurement method will allow for continuous, non-destructive beam size measurement in the SPS. In view of the upgrade, the design has been simplified and validated for integration, radio-frequency & impedance, high-voltage and ultra-high vacuum compatibility.