J-PARC PAC ‘07
Imperial College/RALDave Wark
Status of the T2K Experiment
Dave WarkImperial/RAL
J-PARC PACKEK
July 6, 2007
J-PARC PAC ‘07
Imperial College/RALDave Wark
Evidence for oscillations from…
71±571±5
Early Solar Neutrino Exps.
SuperK
SNO Soudan II
MACRO
Has shown that neutrinos have mass and oscillate.
1R- Energy spectrum
K2K
KamLAND
MINOS
J-PARC PAC ‘07
Imperial College/RALDave Wark
ijijijij sandcwhere sin,cos
100
0cs
0sc
c0iδes
010
iδes0c
cs0
sc0
001
UUU
UUU
UUU
U 1212
1212
1313
1313
2323
2323
τ3τ2τ1
μ3μ2μ1
e3e2e1
li
ilil U If neutrinos have mass:
)E
LΔm.(θ)νP(ν eμ
222 271sin2sin
For three neutrinos:
Three Angles
The Maki-Nakagawa-Sakata-Pontecorvo Matrix
J-PARC PAC ‘07
Imperial College/RALDave Wark
ijijijij sandcwhere sin,cos
100
0cs
0sc
c0iδes
010
iδes0c
cs0
sc0
001
UUU
UUU
UUU
U 1212
1212
1313
1313
2323
2323
τ3τ2τ1
μ3μ2μ1
e3e2e1
li
ilil U If neutrinos have mass:
For three neutrinos:
)E
LΔm.(θ)νP(ν eμ
222 271sin2sin
Two mass differences
The Maki-Nakagawa-Sakata-Pontecorvo Matrix
J-PARC PAC ‘07
Imperial College/RALDave Wark
ijijijij sandcwhere sin,cos
100
0cs
0sc
c0iδes
010
iδes0c
cs0
sc0
001
UUU
UUU
UUU
U 1212
1212
1313
1313
2323
2323
τ3τ2τ1
μ3μ2μ1
e3e2e1
li
ilil U If neutrinos have mass:
For three neutrinos:
)E
LΔm.(θ)νP(ν eμ
222 271sin2sin
CP violating phase
The Maki-Nakagawa-Sakata-Pontecorvo Matrix
J-PARC PAC ‘07
Imperial College/RALDave Wark
A happy announcement…
J-PARC PAC ‘07
Imperial College/RALDave Wark
IAC07 T2K
Imperial College/RALDave Wark
Current knowledge of oscillation parameters.
12, m122 23, m23
2
Solar + KamLAND
SK +K2K+ MINOSMiniBooNE has failed to confirm the single piece of counterevidence
J-PARC PAC ‘07
Imperial College/RALDave Wark
IAC07 T2K
Imperial College/RALDave Wark
J.W.F. Valle, hep-ph/0410103
What about 13?
J-PARC PAC ‘07
Imperial College/RALDave Wark
ijijijij sandcwhere sin,cos
100
0cs
0sc
c0iδes
010
iδes0c
cs0
sc0
001
UUU
UUU
UUU
U 1212
1212
1313
1313
2323
2323
τ3τ2τ1
μ3μ2μ1
e3e2e1
li
ilil U If neutrinos have mass:
)E
LΔm.(θ)νP(ν eμ
222 271sin2sin
ELmmm
Pe
4/and/ where
sin2sincos
2sincos2sin2sincoscos2sin
sin2sin2sincossin2sin
sin2sin2sin
231
231
221
212
223
22
23121313
323121313
223
213
2
~0.03 /4And sin2213 < ~0.14
Three neutrino mixing.
J-PARC PAC ‘07
Imperial College/RALDave Wark
IAC07 T2K
Imperial College/RALDave Wark
disappearance
m232
sin22
What will T2K Add?
sin22
e appearance
First phase of a longer programme whichcould have sensitivity to CP violation!
J-PARC PAC ‘07
Imperial College/RALDave Wark
J-PARC PAC ‘07
Imperial College/RALDave Wark
IAC07 T2K
Imperial College/RALDave Wark
Super Kamiokande Rebuild
J-PARC PAC ‘07
Imperial College/RALDave Wark
J-PARC PAC ‘07
Imperial College/RALDave Wark
J-PARC PAC ‘07
Imperial College/RALDave Wark
J-PARC PAC ‘07
Imperial College/RALDave Wark
J-PARC PAC ‘07
Imperial College/RALDave Wark
Project Integration and Schedule
• 280m detector hall will not be fully available until February 2009, producing a severe challenge for the installation of the 280m detectors.
• As recommended by the PAC, we have formed an Integration Group of the detector engineers, organized by Alan Grant and Cormac Neeson, to do detailed planning of the detector installation.
• Meeting planned for July 10/11 at Imperial, 19 engineers will be in attendance.
J-PARC PAC ‘07
Imperial College/RALDave Wark
Project Integration and Schedule
J-PARC PAC ‘07
Imperial College/RALDave Wark
Project Integration and Schedule• Obviously such an integration programme is
complex and interconnected (and something could slip), however…
• Previously all installation was scheduled for Feb-March, now just the INGRID
• For beam commissioning only the INGRID and muon monitors are really needed, and these have few linkages to the other detectors.
• The neutrino spectrum can me measured with just the magnet, FGDs, and TPCs.
• We should therefore be able to make efficient use of the beam from day one.
J-PARC PAC ‘07
Imperial College/RALDave Wark
IAC07 T2K
Imperial College/RALDave Wark
Other Progress and Issues• The T2K Collaboration has adopted an
International Collaboration Agreement.• This replaces the provisional governing
structure of the collaboration with a governing arrangement fairly typical of international HEP projects:– Spokesman and International Co-Spokesman– Executive Committee and Institutional Board– Publication policy– Speakers bureau…
• We are forming new Working Groups for T2K-SK analysis and Global Analysis
J-PARC PAC ‘07
Imperial College/RALDave Wark
• Canada– Contributions:
• All the FGD except photosensors
• TPC mechanical and field cage, integration, gas system
• Slow Controls and Monitoring
• Cont. to Beamline: OTR Monitor, Remote handling for hot cell, beam position/profile monitors and vessel
– Funding situation: secured with yearly review
• France– Contributions:
• INGRID detector (LLR)
• TPC Micromegas and FE electronics (Dapnia)
• TPC BE electronics (LPNHE)
• Beamline quench detection system
• Power supply for the UA1 magnet
– Funding situation: secured.
Contributions and Funding by Country
J-PARC PAC ‘07
Imperial College/RALDave Wark
• Germany– Contributions:
• UA1 Magnet moving system
• TPC gas monitoring– Funding situation:
request submitted.
• Italy– Contributions:
• UA1 Magnet preparation
• TPC elements?– Very uncertain…
• Japan– Contributions:
• J-PARC• Most of SK, and the SK
rebuild and upgrades • Most of the T2K
beamline, target, and beam dump including beamline monitors and muon monitor
• Infrastructure for the 280m facility
• INGRID detector • FGD photosensors • SMRD FEE • Cont. to NA61
– Funding situation: secured, with additional funding from MEXT in form of competitive grants.
Contributions and Funding by Country
J-PARC PAC ‘07
Imperial College/RALDave Wark
Contributions and Funding by Country• Poland
– Contributions:• Cont. to SMRD
• Cont. to NA61
– Funding situation: request submitted
• Russia– Contributions:
• Cont. to SMRD
– Funding situation: secured
• South Korea– Contributions:
• Beamline proton monitor electronics
– Funding situation: secured
• Spain– Contributions:
• TPC testing, calibration, and gas monitoring
• Cont. to UA1 magnet
– Funding situation: secured
• Switzerland– Contributions:
• Cont. to TPC mechanics, testing, and assembly
• Major contributions to NA61
• Major Cont. to UA1 magnet
– Funding situation: secured subject to annual review
J-PARC PAC ‘07
Imperial College/RALDave Wark
• United Kingdom– Contributions:
• BEE for ECAL/P0D /SMRD/INGRID• Cont. to beamline - beam
window, baffle, and engineering for target and dump design, target remote handling
• Basket/basket stand• ECAL (all)• FEE design for
P0D/SMRD/INGRID• DAQ for 280m• Cont. to UA1 magnet
– Funding situation: ~60% secured, funding for the Barrel and P0D ECALs deferred for decision this year.
• United States– Contributions:
• Cont. to SK, including upgrades, rebuild, and new SK electronics
• P0D (all)• Beamline - SC corrector
magnets, 2nd horn, monitor electronics and GPS
• Cont. to SMRD
– Funding situation: secured, with forward cash flow from institutions(!)
Contributions and Funding by Country
J-PARC PAC ‘07
Imperial College/RALDave Wark
Overall funding situation…• Mostly good. The only major uncertainty for
committed items is the UK funding for the ECAL, which we should find out later this year.
• However:– There is no overall cash reserve or contingency for the
project.
– A number of items have been identified which fall in the cracks between commitments, the most notable of which is the magnet installation (precise cost estimates are not yet available for some of these items).
J-PARC PAC ‘07
Imperial College/RALDave Wark
Magnet Installation
J-PARC PAC ‘07
Imperial College/RALDave Wark
Magnet Installation
J-PARC PAC ‘07
Imperial College/RALDave Wark
J-PARC PAC ‘07
Imperial College/RALDave Wark
Overall funding situation…• Mostly good. The only major uncertainty for
committed items is the UK funding for the ECAL, which we should find out later this year.
• However:– There is no overall cash reserve or contingency for the
project.– A number of items have been identified which fall in
the cracks between commitments, the most notable of which is the magnet installation (precise cost estimates are not yet available for some of these items).
– We tried to cover this by extending the operating Common Fund forward two years into the construction period.
– This has not been immediately accepted by all funding agencies, and we are negotiating.
– The total amount is small compared to the project cost, but the last bit is always hardest to find…
J-PARC PAC ‘07
Imperial College/RALDave Wark
Overall funding situation…• The situation with the final funding for
completion should properly be the remit for an International Finance Committee made up of representatives from the funding bodies.
• We would welcome help from KEK in rapidly forming such a committee to help us finalize funding arrangements for installation and integration.
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