| Published Articles | |
| Title | Refining and testing 12,000 km of scintillating plastic fibre for the LHCb SciFi tracker |
| Author(s) | Cavalcante, A B R (Rio de Janeiro, CBPF) ; Dey, B (CCNU, Wuhan, Inst. Part. Phys.) ; Gavardi, L (Tech. U., Dortmund (main)) ; Gruber, L (CERN) ; Joram, C (CERN) ; Kristic, R (CERN) ; Shinji, O (Kuraray, Tokyo) ; Zhukov, V (RWTH Aachen U.) |
| Publication | 2018 |
| Number of pages | 23 |
| In: | JINST 13 (2018) P10025 |
| DOI | 10.1088/1748-0221/13/10/P10025 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; LHCb |
| Abstract | The LHCb Collaboration is constructing a large scintillating fibre tracker for a major upgrade of the experiment during the LHC long shutdown LS2 scheduled for 2019–2020. The detector is based on blue emitting Kuraray SCSF-78MJ fibres of 0.25 mm diameter, read out by linear 128-channel Hamamatsu SiPM arrays. Over a period of about 2 years the full supply of 12,000 km of fibres underwent a systematic and rigorous quality assurance program, including geometrical refinement to deal with rare punctual imperfections. The measurements comprised attenuation length, ionisation light yield, diameter, cladding integrity and radiation tolerance to X-rays. The supply was found to be timely and of very high quality and stability, which led to negligible rejection rates. A small but systematic degradation of the attenuation length by about 1.4% per year is interpreted as natural aging due to oxidation of the polystyrene fibre core and is subject of further investigations. |
| Copyright/License | publication: (License: CC-BY-3.0) |
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Záznam vytvorený 2018-11-15, zmenený 2019-10-15
