The SHiP Experiment at CERN Annika Hollnagel - PowerPoint PPT Presentation

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook The SHiP Experiment at CERN Annika Hollnagel annika.hollnagel@uni-mainz.de Johannes Gutenberg-Universität Mainz, ETAP on behalf of the SHiP Collaboration JGU Mainz 0 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SHiP: Search for Hidden Particles General-Purpose Fixed-Target Facility: • Part of the Physics Beyond Colliders program • CERN SPS NorthArea: 400 GeV protons ⊲ Search for weakly interacting particles with m ≤ 10 GeV / c 2 : HNL , dark γ , light scalars, SUSY, axions ... ⊲ ν τ physics , lepton flavour-violation , direct Dark Matter search... JGU Mainz 1 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SM & BSM Physics with SHiP A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case (CERN-SPSC-2015-017) JGU Mainz 2 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SM & BSM Physics with SHiP BSM searches: • Neutrino masses • Matter - antimatter asymmetry in the Universe • Non-baryonic Dark Matter H idden S ector ( HS ) portals: • Weak interaction of Dark Matter with visible sector ? ⊲ Possible mediators: ALPs, Dark γ / Scalars / Pseudoscalars, HNL A xion- L ike P articles ( ALP s): Dark Scalars: JGU Mainz 3 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SM & BSM Physics with SHiP ν Minimal Standard Model ( ν MSM): ⊲ Extension of the SM by 3 right-handed H eavy N eutral L eptons ( HNL ) Light N 1 : • Mass O (10 keV ) ⊲ Dark Matter candidate Heavy N 2 , N 3 : • Mass O (1 GeV ) • Weakly coupling to SM ⊲ Origin of ν masses ⊲ Baryon asymmetry of the Universe • Production: Decays of D & B mesons ( c & b quarks), p bremsstrahlung • Detection: Visible decays into charged leptons, π , γ ... JGU Mainz 4 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SM & BSM Physics with SHiP ν Minimal Standard Model ( ν MSM): ⊲ Extension of the SM by 3 right-handed H eavy N eutral L eptons ( HNL ) Light N 1 : • Mass O (10 keV ) ⊲ Dark Matter candidate Heavy N 2 , N 3 : • Mass O (1 GeV ) • Weakly coupling to SM ⊲ Origin of ν masses ⊲ Baryon asymmetry of the Universe • Production: Decays of D & B mesons ( c & b quarks), p bremsstrahlung • Detection: Visible decays into charged leptons, π , γ ... JGU Mainz 4 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SM & BSM Physics with SHiP ν physics: ν flux prod. CC DIS int. at p target in ν target 2 . 8 × 10 16 ν τ + ν τ 53 000 5 . 1 × 10 17 ν e + ν e 1 360 000 6 . 9 × 10 18 ν µ + ν µ 3 300 000 • First observation of ν τ interactions • ν τ & ν τ cross section measurement ⊲ Extraction of F 4 and F 5 structure functions from CC ν – nucleon DIS • Test of lepton flavour universality Other SM / BSM physics: • Charm production: Measurement of the nucleon s & s content ⊲ Test of the NuTev anomaly • Direct search for Light Dark Matter (LDM) JGU Mainz 5 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook The SHiP Experiment A facility to Search for Hidden Particles at the CERN SPS (CERN-SPSC-2015-016) JGU Mainz 6 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SHiP at CERN JGU Mainz 7 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook SHiP at CERN JGU Mainz 8 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook Target & Muon Shield Target & muon shield: Heavy target ( 42 Mo & 74 W ): • Optimised for heavy meson production • 5 run years ( 2 × 10 20 p . o . t . ): ⊲ > 10 18 D mesons ⊲ > 10 14 B mesons ⊲ > 10 16 τ neutrinos JGU Mainz 9 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook Target & Muon Shield Target & muon shield: Heavy target ( 42 Mo & 74 W ): • Magnetised hadron stopper: ⊲ ∼ 1 . 6 T magnetic field ⊲ Air-cooled Al coil JGU Mainz 9 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook Target & Muon Shield Target & muon shield: Muon shield ( ∼ 30 m ): • 10 11 µ per 1 s -spill • Passive absorber & active deflection: ⊲ Grain-oriented steel sheets ⊲ ∼ 1 . 7 T magnetic field ⊲ < 10 5 µ per spill remaining JGU Mainz 10 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook Scattering and Neutrino Detector S cattering and N eutrino D etector ( SND ): OPERA-based concept: ED elements & ECC bricks • High-resolution ECC bricks • 19 layers of SciFi target trackers • Horizontal magnetic field: 1 . 25 T , active cooling • µ ID system: 12 planes of RPCs & iron filters JGU Mainz 11 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook Scattering and Neutrino Detector S cattering and N eutrino D etector ( SND ): OPERA-based concept: ED elements & ECC bricks • ν physics: ⊲ Measurement of ν e , ν µ , ν τ ⊲ Distinguish ν and ν • ν -induced charm production • Direct LDM searches JGU Mainz 11 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: Decay volume Evacuated vessel ( ∼ 50 m ): • Double-layer steel structure: ⊲ S355JO(J2/K2)W black steel ⊲ 20 mm -thick sheets ⊲ Strengthening ribs • End-cap material (tbd): ⊲ Extruded Al JGU Mainz 12 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: Decay volume Evacuated vessel ( ∼ 50 m ): 10 − 3 bar • Pressure: ⊲ Minimal BG from K L , K S , Λ • Visible decays of HNL into charged leptons, π , γ ... JGU Mainz 12 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: S urrounding B ackground T agger ( SBT ) LS SBT: L iquid Scin tillator SBT • Discrimination against µ - and ν -induced BG: ⊲ High efficiency ⊲ Good time resolution • Segments: ∼ 120 cm × 30 cm × 80 cm JGU Mainz 13 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: S urrounding B ackground T agger ( SBT ) LS SBT: L iquid Scin tillator SBT • Inner reflective coating • Filled with liquid scintillator ( ∼ 300 m 3 ): ⊲ LAB + 2 g / l PPO • Instrumentation with WOMs ( ∼ 3 500) • SiPM readout JGU Mainz 13 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: Spectrometer Spectrometer & magnet: • 5 m × 10 m sensitive area • Horizontal magnetic field: 0 . 15 T ⊲ 1 100 t yoke, 55 t coil mass ⊲ 3 kA current, 1 . 1 MW dissipation ⊲ Superconducting option? JGU Mainz 14 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: Spectrometer S pectrometer S traw T racker ( SST ): • 16 000 5 m -long tubes of 2 cm diameter • 36 µ m -thick PET film coated with 50 nm Cu & 20 nm Au • 4 stations of 4 × 4 stereo layers ⊲ Spatial resolution: 120 µ m ⊲ Energy resolution: � 1% for p < 50 GeV JGU Mainz 15 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: Spectrometer T iming D etector ( TD ): • Rejection of combinatorial µ BG ⊲ Timing resolution: � 100 ps • Plastic scintillator bars with double-sided SiPM readout • Multi-gap RPCs (also interesting for front-cap veto) JGU Mainz 16 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: Spectrometer E lectromagnetic Cal orimeter ( SplitCal ): • e /γ identification, π 0 reconstruction, γ directional reconstruction • 50 plastic scintillator planes with WLS & double-sided SiPM readout • 6 m × 12 m -wide absorber planes • 3 layers of high-precision MicroMegas JGU Mainz 17 10.09.2019 The SHiP Experiment

Physics with SHiP SHiP @CERN Target & µ Shield SND SND HSD Summary & Outlook HS Detector HS detector: Spectrometer Muon detector: • Rejection of combinatorial µ BG • µ/π separation • 3 stations: 6 m × 12 m sensitive area • Plastic scintillator tiles (10 cm × 20 cm ) with direct SiPM readout • Passive iron filters JGU Mainz 18 10.09.2019 The SHiP Experiment