Q&A on T2K: Q&A on T2K construction of beam line near detectors budget collaboration (contribution from each) T2KK


Bird’s-Eye View (Feb. 2006): Bird’s-Eye View (Feb. 2006) Hadron Experimental Hall 50 GeV MR A round=1,600m Materials & Life Experimental Hall 3GeV RCS A round=350m Linac (330m) Neutrino 3NBT 3-50BT


Primary Beam-line: Primary Beam-line 3NBT DV ARC Preparation Section Material Life & Science 50GeV Preparation Section July, 2006 March, 2006


plan: plan Beam Power (MW) 0 1 2 3 2008 2009 2010 2011 2012 RCS power h.n. RF mod h.n.+RFx2 0.5MW 0.1MW　 >0.5MW >0.75MW　 RF 400MeV Linac commissioning


Neutrino Beam Line for T2K Experiment: decay volume Near detector Target Station Beam dump/m-pit 280m Neutrino Beam Line for T2K Experiment Components Primary proton beam line Normal conducting magnets Superconducting arc Proton beam monitors Target/Horn system Decay pipe Beam dump muon monitors Near neutrino detector Special Features Superconducting combined function magnets Off-axis beam To Super-Kamiokande


Horns: Horns 1st horn Successful operation at 320kA Long-term current operation test 2nd horn design / 3rd horn prototype in FY06 Support module Conceptual design done on Remote coupling of horns and water / He pipes. Kinematic alignment system R&D Remote coupling of strip-lines Water circulation system (7m pumping up) Support module itself Produce everything in FY2007


ND280 Neutrino Detector(Experimental Hall with 3 floors): ND280 Neutrino Detector (Experimental Hall with 3 floors) Current design 37m 2.5deg beam center 28.5m Ground level Off-Axis Neutrino Detector On-Axis Neutrino Monitor


Schedule of n beam line: Schedule of n beam line


Japanese funding situation: Japanese funding situation Beamline, detector hall civil (~80-oku\) Equipments (~72-oku\) Proton, muon, neutrino monitor (~ 4-oku\) Foreign Contributions ~20M$ from Canada, France, Italy, Korea, Poland, Russia, Spain, Switzerland, UK, USA


T2K Collaboration: T2K Collaboration 11 Countries (number of members) Canada(24), France(8), Italy(11), Japan(46), Korea(9), Poland(1), Russia(8), Spain(12), Switzerland(3), UK(25), USA(42) 58 Institutes, 189 Ph.D. members, still growing


Slide13: Canada Damper system, OTR beam monitor, Remote handling, Actuator, Vacuum chamber, Fine-Grained-Detector (FGD), TPC France SC quench detection system, TPC electronics, TPC Italy UA1 magnet, Side-Muon-Ranger (SMRD), 2km ND Korea Beam Monitor electronics, neutrino monitor, Poland Neutrino MC Russia Neutrino Monitor, Photo-sensor, SMRD, Spain UA1 magnet, TPC, software Switzerland UA1 magnet, TPC, neutrino monitor UK Target, target remote handling, Dump, Beam window, UA1 magnet, Electromagnetic Calorimeter, Basket, Electronics, Photo-sensor USA SC correction magnets, 2nd horn, CT beam monitor, beam monitor electronics, GPS system, pi-zero detector (P0D), SMRD, 2km ND, Super-K (1)Accelerator (2) Beam Line, (3) Near Neutrino Detector, (4) Super-K


Slide14: One of the future options of T2K 0.5Mton at Kamioka and 0.5Mton at Korea Aim to resolve q13, d digeneracy Discriminate mass hierarchy Studies and discussions have been done Hagiwara et al. Phy.Rev.B 637 (2006) 266 Ishizuka et al., PRD 72 (2005) 033033 2 International workshop on a Far Detector in Korea for the J-PARC Neutrino Beam