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Scintillating fibre tracker

Scintillating fibre tracker. Vladimir SHEVCHENKO, o n behalf of Kurchatov Institute SciFi group, Moscow, Russia. First SHiP Workshop. Zurich, 12 June, 2014. Warm up: a comment ( SciFi –unrelated). Suggested solutions to hierarchy problem:.

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Scintillating fibre tracker

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  1. Scintillating fibre tracker Vladimir SHEVCHENKO, on behalf of Kurchatov Institute SciFi group, Moscow, Russia First SHiPWorkshop Zurich, 12 June, 2014

  2. Warm up: a comment (SciFi–unrelated) Suggested solutions to hierarchy problem: Version 2. Something is wrong with the current (composite Higgs etc) Version 1. There is a symmetry which keeps Version 3. Something is wrong with the states (SUSY etc) Sensitivity to the physics above UV cutoff SciFi Tracker First SHiP Workshop, Zurich

  3. For quantum field theory defined on a lattice with link a : Actual physical dynamics IS fine tuned: Lattice here can be seen as a «detector», a measuring device which brings its own story to the theory. We know from experiment in all these cases that 1/a terms are irrelevant. Not (yet) deep enough understanding of quantum field theory? SciFi Tracker First SHiP Workshop, Zurich

  4. New Scintillating Fibre Tracker for LHCb SciFi Tracker First SHiPWorkshop, Zurich

  5. LHCbScintillating Fibre Tracker layout-I (slide from Fred Blanc) SciFi Tracker First SHiP Workshop, Zurich

  6. Layout-II SciFi Tracker SHIP Workshop, Zurich

  7. Scintillating Fibre Tracker SiPM readout (slide from Fred Blanc) SciFi Tracker First SHiPWorkshop, Zurich

  8. SiPM Photo-Detection Efficiency (slide from Fred Blanc) SciFi Tracker First SHiPWorkshop, Zurich

  9. Cladding and transmission mechanism Kuraray SCSF-78MJ scintillating fiber is double cladding SciFi Tracker First SHiPWorkshop, Zurich

  10. Attenuation length in 250 µm Kuraray fibre The recent order of 100 km (8 spools) fromKuraray SCSF-78MJ scintillating fibres showed Latt values around 3.2m Latt.in cm: (slide from C. Joram) SciFi Tracker First SHiPWorkshop, Zurich

  11. SciFi Tracker in numbers (slide from Fred Blanc) SciFi Tracker First SHiPWorkshop, Zurich

  12. Sci-Fibre tracker for SHIP neutrino detector Stereo layers of the fibre-ribbon walls readout by SiPM ECC mini-walls Fibre Tracker (picture from G. De Lellis) SciFi spatial resolution (≤100 µm) is more than sufficient to predict τ-neutrino vertex. No problems with radiation hardness, SiPM cooling, overall positioning etc. SciFi Tracker First SHiPWorkshop, Zurich

  13. SciFi ribbon fabrication method • 2 steps: • Fibre rewinding from a large Kuraray cardboard (Ø 1000 mm) • drum to a smaller (Ø300 mm) plastic one, fibre quality control • during rewinding. • Winding process allows production of 5(6)-layer fibre ribbon • using the EpoTec epoxy glue impregnated with TiO2 bonding SciFi Tracker First SHiPWorkshop, Zurich

  14. Fibre quality control (RWTH, Aachen) Drum from Kuraray Tension control Cleaning (dust) Measurement of fiber diameter and light leak Drum ready for production Data base for traceability Similar setup is running at Dortmund TU. (picture by B.Leverington) SciFi Tracker First SHiPWorkshop, Zurich

  15. SciFi ribbons production (RWTH, Aachen) • Winding process: • Fibers are placed in grooves on drum • by precise CNC winding machine. • Pitch of grooves on drum: 275 μm. • Fiber cut after each layer. • Then, fibres are placed in the grooves between the fibres of the bottom layers. • Tension increased (20100 g) for each • next layer. • 5(6) layers wound on top of each other. SciFi Tracker First SHiPWorkshop, Zurich

  16. Winding hub production at IPT (pictures by Th.Kirn) SciFi Tracker First SHiPWorkshop, Zurich

  17. New SciFi ribbon winding wheel (matrix) Stainless steel precise threaded wheel Ø 822 mm on aluminum hub. SciFi Tracker First SHiPWorkshop, Zurich

  18. LHCbSciFiTracker production schedule The SciFi project schedule calls for the R&D phase to be completed by the middle of the 2015 followed by the production phase which should end by the middle of 2017. The fibre and the carrier panel procurement will start by September 2014. With an average production rate of 1 fibre ribbon per day at least two full rate production facilities are needed to comply with the project schedule. One of them is being built at NRC KurchatovInstitute. SciFi Tracker First SHiPWorkshop, Zurich

  19. Production clean room at NRC KI , Moscow 240 m2 area clean room, 10.000-100.000 class, being constructed SciFi Tracker First SHiPWorkshop, Zurich

  20. Production clean room floor plan Equipment lay-out: Work zones: I – ribbon winding zone, II – fibre quality control, III – cutting and assembly, IV,V – CR entrance zone, VI – module storage area. SciFi Tracker First SHiPWorkshop, Zurich

  21. Conclusions for SHiP • The main «propaganda picture» • is very nice. There could be • something behind it. • SciFi tracking technology is very nice. We should develop • it for LHCb upgrade and use all its advantages in full for • the SHiP project. • Perhaps it is (or will be in some time) worth thinking about • focused satelite-based project complementary to SHiP • (Space SHiP ?). SciFi is well suited for that (reliability, • small mass, low power dissipation etc). SciFi Tracker First SHiPWorkshop, Zurich

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