MINER MINER A (FNAL E938) A (FNAL E938) Gabriel Niculescu, JMU Gabriel Niculescu, JMU MINERA web site: http://minerva.fnal.gov/ Minera Main Injector MINOS Near Detector NuMI Beam Where? FERMILAB Numi Beam Line In front of the Minos near detector ( used as “muon catcher”) NuMi Beam Line Fully Active Target: 8.3 tons Nuclear Targets: 6.2 tons (40% scint.) LHe LHe SideECAL SideECAL Fully Active Target Fully Active Target Downstream ECAL Downstream ECAL Downstream Downstream HCAL HCAL Nuclear Nuclear Targets Targets Side HCAL (OD) Side HCAL (OD) Veto Wall Veto Wall What with? Active core of segmented solid scintillator providing: Precision tracking (including low momentum recoil protons) Particle identification 3 ns (RMS) per hit timing (track direction, stopped K ± ) LHe, C, Fe, Pb targets (upstream) Core surrounded by electromagnetic and hadronic calorimeters , 0 , and hadronic E measurement MINOS near detector as muon catcher Low-risk, simple, well-understood, Affordable! Target Fiducial Vol. Expected CC (tons) Yields (10 6 ) CH (scintillator) 3.00 9.0 He 0.20 0.6 C 0.15 0.4 Fe 0.70 2.0 Pb 0.85 2.5 Assume: 4.0 x 1020 POT LE and 12.0 x 1020 POT ME beam How Big? Main CC Physics Topics (Statistics in active target only - CH) Quasi-elastic 0.8 M events Resonance Production 1.7 M total Transition: Resonance to DIS 2.1 M events DIS, Structure Funcs. and high-x PDFs 0.3 M DIS events Coherent Pion Production 89 K CC / 44 K NC Strange and Charm Production >240 K Generalized Parton Distributions ~ 10 K events What? Axial form factor of the nucleon Resonance production in both NC & CC interactions Statistically significant measurements with 1-5 GeV neutrinos Study of “duality” with neutrinos Coherent pion production Statistically significant measurements of A-dependence Strange particle production (Important backgrounds for proton decay) Parton distribution functions (Measurement of high-x behavior of quarks) Generalized parton distributions Nuclear effects (Expect significant differences for -A vs e/-A nuclear effects) Detailed Why? p Quasielastic event n p Neutral Current 0 A Resonance production p ++ - p + p Simulated Miner a Events 1.7 × 3.3 cm 2 strips WLS fiber readout in center hole Optical Connector s Scintillator & embedded WLS Clear fiber M-64 PMT PMT Box Minera Core Quo Vadis, Minera? • CD 1 and 2 approval (working on 3) • Vertical Slice Test • Small array test @JLab (300MeV • Full Module Prototype (spring ’07) • Test beam (MTEST) @Fermilab • Start production in ’08, data taking in ‘09 Your Minera (Put your comments here) What? MINERvA is a compact, fully active neutrino detector designed to study neutrino-nucleus interactions in detail at high statistics” Why? Inherent interest in the phenomena of low-energy neutrino-nucleus scattering “Neutrino Engineering”: Provide knowledge that will help improve/enhance other neutrino studies (read “oscillations”) Who? (E938 Collaboration) University of Athens - Greece; University of Dortmund; University of Minnesota – Duluth; Fermi National Accelerator Laboratory; Hampton University; Illinois Institute of Technology; Institute for Nuclear Research – Moscow; University of California – Irvine; Thomas Jefferson National Laboratory; James Madison University; Northwestern University; Pontificia Universidad Catolica del Peru; University of Pittsburgh; Rutgers, The State University of New Jersey; Tufts University; Universidad Nacional de Ingenieria – Peru; University of Rochester; College of William & Mary; St. Xavier University; Centro Brasileiro de Pesquisas Fisicas - Brazil