A fast and quasi non-invasive muon beam monitor working at the intensity frontier

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2019-08, Vol.936, p.634-635
• Main Authors: Papa, A., Rutar, G., Barchetti, F., Hildebrandt, M., Kettle, P.-R.
• Format: Article
• Language: English
• Subjects: Beam monitoring detector; Muon; Positron and pion beams; Scintillating fibre; Silicon photomultiplier
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2018.10.145

A new and high-performance generation of detectors based on scintillating fibres coupled to silicon photomultiplier (SiPM, MPPC) is under development. We focus here on the use of this technology as a beam monitoring detector with the following characteristics: high granularity, high detection efficiency, fast timing response, accurate position resolutions, minimal material budget and insensitivity to magnetic fields. We present a scintillating fibre and silicon photomultiplier-based beam monitoring detector used in one of the most intense muon beam in the world (few ×108μ+∕s). A full detector prototype was built and successfully tested at the πE5 beam line of the Paul Scherrer Institute (PSI). Beam profile and rate measurements were made with a precision of better than 1% and together with particle identification capability, are consistent with standard techniques confirming the viability of this technology for high-rate applications.