First use of Timepix3 hybrid pixel detectors in ultra-high vacuum for beam profile measurements

H. Sandberg, W. Bertsche, D. Bodart, B. Dehning, S. Gibson, S. Levasseur, K. Satou, G. Schneider, J. W. Storey, R. Veness

    Research output: Contribution to journalArticlepeer-review


    A transverse beam gas ionization profile monitor is currently under development for the CERN Proton Synchrotron (PS) to provide non-destructive continuous measurements during a beam cycle. The implementation is exploring a novel use of the Timepix3 hybrid pixel detector mounted inside the ultra-high vacuum of the accelerator beam pipe to provide direct detection of ionization electrons. In early 2017, a prototype monitor was installed and has been used successfully to measure the transverse beam profile. The evolution of the transverse beam profile throughout the beam cycle has been measured and specific time windows within a beam cycle have been studied, for example the transition crossing. A radiation tolerant readout system for the Timepix3 detectors has been implemented which enables the connection of up to four detectors located in a highly radioactive environment. The first version of the readout was installed together with the prototype monitor in 2017 and a new version of the readout is currently under development which will enable the full speed data rate of the pixel detectors. Use of the radiation tolerant readout system can be envisioned for other beam instrumentation applications, which could provide new insight to beam diagnostics.

    Original languageEnglish
    Article numberC01013
    JournalJournal of Instrumentation
    Issue number1
    Early online date14 Jan 2019
    Publication statusPublished - 2019


    • Beam-line instrumentation (beam position and profile monitors; beam-intensity monitors; bunch length monitors)
    • Front-end electronics for detector readout
    • Hybrid detectors; Instrumentation for particle accelerators and storage rings - high energy (linear accelerators, synchrotrons)


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