q&a on t2k
DESCRIPTION
Q&A on T2K. construction of beam line near detectors budget collaboration (contribution from each) T2KK. Bird’s-Eye View (Feb. 2006). Hadron Experimental Hall. 50 GeV MR A round=1,600m. Materials & Life Experimental Hall. 3NBT. Neutrino. 3-50BT. 3GeV RCS A round=350m. Linac - PowerPoint PPT PresentationTRANSCRIPT
Q&A on T2KQ&A on T2K
• construction of beam line• near detectors• budget• collaboration (contribution from each)• T2KK
Bird’s-Eye View (Feb. 2006)
Hadron Experimental Hall50 GeV MR50 GeV MRA round=1,600mA round=1,600m
Materials & LifeExperimental Hall
3GeV RCS3GeV RCSA round=350mA round=350m
LinacLinac(330m)(330m)
NeutrinoNeutrino3NBT
3-50BT
Primary Beam-line
3NBT3NBT
DVDV
ARCARC
Preparation Preparation SectionSection
Material Life Material Life & Science& Science
50GeV50GeVPreparation SectionPreparation Section
July, 2006
March, 2006
planw/ LINAC upgrade
0
500
1000
1500
2000
2500
3000
2008 2008.5 2009 2009.5 2010 2010.5 2011 2011.5 2012 2012.5 2013J FY
Beam
pow
er (k
W)
RCS power
MR power
MR powerx2 Np
MR powerx2 Npx1.5 rep rateMR powerx2 Npx2 rep rate
Be
am P
ow
er
(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
RF400MeVLinac
commissioning
decay volume
Near detector
TargetStation
Beam dump/-pit280m
Neutrino Beam Line for T2K Experiment
ComponentsComponents 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 FeaturesSpecial Features
Superconducting Superconducting combined combined
functionfunction magnets magnets
Off-axis beamOff-axis beam
To Super-Kamiokande
Iron Block Shield inside
concrete
Remote coupling here
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)
Current design37m
2.5deg beam center28.5m
Ground level
Off-Axis Neutrino Detector
On-Axis Neutrino Monitor
Schedule of beam line
2004.4-2006.32005.4-2007.32006.4-2008.32007.4-2009.3
Target station•const.: ’06~’07•Install: ’08
Proton beam line•const.: ’05~’06•Install: ’08
half of Decay volume•const.: ’04~’05•Install: ’04
Buildings•Const.: ’07
Near detector•const.: ’07~’08•Install: ’08
Beam dump &half of Decay vol.•const.: ’07~’08•Install: ’08
Primary line tunnelNC mags (Prep. Sect.)SC/NC in FFCryogenics
TS civil/buildingEquipments in TSDecay volumeBeam dump
Neutrino monitor
Secondary
Prim
ary
101 7
Facility Design
H214 7 10
20062004 2005 2009
7 10 11st yr 2nd yr 3rd yr
14 7 10 44
2008
4 7 10 1Last yr
2007
4 7 10 14th yr
Inst.Inst.
Inst.Comm.
Inst./Test ope.
Civil Civil Inst.
Inst.CivilInst.Civil mag
inst
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
• 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
• Canada– Damper system, OTR beam monitor, Remote handling, Actuator, Vacuum c
hamber, 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 electronic
s, GPS system, pi-zero detector (P0D), SMRD, 2km ND, Super-K(1)Accelerator (2) Beam Line, (3) Near Neutrino Detector, (4) Super-K
• One of the future options of T2KOne of the future options of T2K• 0.5Mton at Kamioka and 0.5Mton at Korea0.5Mton at Kamioka and 0.5Mton at Korea• Aim to Aim to
– resolve q13, d digeneracyresolve q13, d digeneracy– Discriminate mass hierarchyDiscriminate mass hierarchy
• Studies and discussions have been doneStudies and discussions have been done– Hagiwara et al. Phy.Rev.B 637 (2006) 266Hagiwara et al. Phy.Rev.B 637 (2006) 266– Ishizuka et al., PRD 72 (2005) 033033Ishizuka et al., PRD 72 (2005) 033033– 2 International workshop on a Far Detector 2 International workshop on a Far Detector
in Korea for the J-PARC Neutrino Beam in Korea for the J-PARC Neutrino Beam