| Article | |
| Report number | arXiv:1612.01125 |
| Title | Measurement of parameters of scintillating bars with wavelength-shifting fibres and silicon photomultiplier readout for the SHiP Muon Detector |
| Related title | Measurement of parameters of scintillating bars with wavelength-shifting fibres and silicon photomultiplier readout for the SHiP Muon Detector |
| Author(s) | Baldini, W. (INFN, Ferrara) ; Blondel, A. (Geneva U.) ; Calcaterra, A. (Frascati) ; Jacobsson, R. (CERN) ; Khotjantsev, A. (Moscow, INR) ; Kudenko, Y. (Moscow, INR ; Moscow Phys. Eng. Inst.) ; Kurochka, V. (Moscow, INR) ; Lanfranchi, G. (Frascati) ; Mefodiev, A. (Moscow, INR) ; Mineev, O. (Moscow, INR) ; Montanari, A. (INFN, Bologna) ; Tosi, N. (INFN, Bologna) ; Saputi, A. (Frascati) ; Messomo, E.Noah (Geneva U.) |
| Publication | 2017-03-07 |
| Imprint | 2016-12-04 |
| Number of pages | 20 |
| Note | 20 pages, 19 figures |
| In: | JINST 12 (2017) P03005 |
| DOI | 10.1088/1748-0221/12/03/P03005 |
| Subject category | physics.ins-det ; Detectors and Experimental Techniques ; hep-ex ; Particle Physics - Experiment ; 9: New support structures and micro-channel cooling |
| Accelerator/Facility, Experiment | CERN SPS ; SHIP CERN PS |
| Test beam | T9 |
| Abstract | The light yield and the time resolution of different types of 3 m long scintillating bars instrumented with wavelength shifting fibres and read out by different models of silicon photomultipliers have been measured at a test beam at the T9 area at the CERN Proton Synchrotron. The results obtained with different configurations are presented. A time resolution better than 800 ps, constant along the bar length within 20%, and a light yield of 140 (70) photoelectrons are obtained for bars 3 m long, 4.5 (5) cm wide and 2 (0.7) cm thick. These results nicely match the requirements for the Muon Detector of the SHiP experiment. |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 publication: © 2017-2025 CERN (License: CC-BY-3.0) |
Corresponding record in: Inspire
Notice créée le 2017-02-21, modifiée le 2023-03-14
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00009 Light yield scan across 3 cm, 5 cm and 10 cm bars (a). Attenuation of scintillating light in the opposite directions from a fibre in the 10 cm bar (b).
00006 Sum of the light yield measured at each as a function of the beam position along the bar for L2, L1, L4 bar.
00004 L2 bar: light yield measured at each end (red squares and blue solid circles) and the sum of the light yields measured at both ends (black open circles) as a function of the incident beam position along the bar.
00003 L1 bar: light yield measured at each end (red squares and blue solid circles) and the sum of the light yields at both ends (black open circles) as a function of the incident beam position along the bar.
00007 Light yield scan for 3 cm bars U1 (a) and 5 cm bars U2 (b).
00002 Example of distribution of the sum of the light yield collected at both ends of a 2 cm thick NICADD bar.
00014 L2 bar time resolution using only SiPM $L$($R$), red circles(blue squares) and both SiPMs (green triangles).
00013 L1 bar time resolution using only SiPM $L$($R$), red circles(blue squares) and both SiPMs (green triangles).
00015 L4 bar time resolution using only SiPM $L$($R$), red circles(blue squares) and both SiPMs (green triangles).
00001 Example of MPPC spectrum used for the calibration of the light yield.
00008 Light yield scan for 10 cm bars U3 (a) and U4 (b).
00000 Four types of bars manufactured at UNIPLAST factory.
00018 Time resolution for 10 cm bars with 2 MPPC readout (a) and 4 MPPC readout (b).
00017 Time resolution for 3 cm (a) and 5 cm bars (b) vs position along the bars.
00011 Example of baseline-subtracted waveform for 2 cm thick NICADD bars.
00010 The inefficiency for 3 and 5 cm wide bars as a function of the charge detection threshold. The events are counted if the charge is over the specified threshold at each bar end.
00005 L4 bar: light yield measured at each end (red squares and blue solid circles) and the sum of the light yields measured at both ends (black open circles) as a function of the beam position along the bar.
00016 Fitting of digitized pulse shape to obtain the timing mark.
00012 Speed of light propagation $v_f$ in L2 fibre, for signals read by SiPM left (red line) and right (blue line); $v_f$ is measured as $(16.0\pm0.1)$ cm/ns.