T2K IFOP 11/7 Imperial College/RAL Dave Wark Status of the 280m Detectors and Current Issues Dave Wark Imperial/RAL J-PARC IFOP Videocon Nov. 16, 2007

T2K IFOP 11/7 Imperial College/RAL Dave Wark

T2K IFOP 11/7 Imperial College/RAL Dave Wark 280m Near Detectors

T2K IFOP 11/7 Imperial College/RAL Dave Wark INGRID On-Axis Detector Japan/France/UK effort Must be operating April 1, 2009 for first beam.

T2K IFOP 11/7 Imperial College/RAL Dave Wark MPPC (aka SiPMs) Status 280m detectors require readout of ~10 5 fibers, most in 0.2T magnetic field. 1 mm Conventional photodetectors were unsuitable, so we decided to use SiPMs despite lack of commercial availability when adopted. Hamamatsu have now produced a version which meets T2K specifications, will deliver 5k/month starting in early 2008 at 1,900 ¥ (plus 5% tax) when purchased within Japan.

T2K IFOP 11/7 Imperial College/RAL Dave Wark INGRID Schedule

T2K IFOP 11/7 Imperial College/RAL Dave Wark

T2K IFOP 11/7 Imperial College/RAL Dave Wark

T2K IFOP 11/7 Imperial College/RAL Dave Wark

T2K IFOP 11/7 Imperial College/RAL Dave Wark FGD Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark FGD Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark TPC Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark TPC Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark ECAL Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark ECAL Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark ECAL Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark SMRD Progress

T2K IFOP 11/7 Imperial College/RAL Dave Wark SMRD Schedule

T2K IFOP 11/7 Imperial College/RAL Dave Wark Project Integration and Schedule

T2K IFOP 11/7 Imperial College/RAL Dave Wark Project Integration and Schedule

T2K IFOP 11/7 Imperial College/RAL Dave Wark Overall Technical Situation All sub-detectors progressing well, minor delays here and there but overall the progress is on track for on-time installation. Major technical risks are being retired and milestones reached (too many to report in this brief meeting, but we have results from prototypes of almost all sub-detectors showing technical feasibility). No major technical problems currently seen. The installation and commissioning schedule for the 280m detectors is aggressive, in particular for the magnet/SMRD, but large amounts of effort are going into planning and no show-stoppers are known.

T2K IFOP 11/7 Imperial College/RAL Dave 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

T2K IFOP 11/7 Imperial College/RAL Dave 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

T2K IFOP 11/7 Imperial College/RAL Dave Wark Contributions and Funding by Country Poland –Contributions: Cont. to SMRD Cont. to NA61 –Funding situation: secured 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

T2K IFOP 11/7 Imperial College/RAL Dave 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, helped by forward cash flow from institutions. Contributions and Funding by Country

T2K IFOP 11/7 Imperial College/RAL Dave 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 or early next. However: –There is no overall cash reserve or contingency for the project. –A few items have been identified which fall in the cracks between commitments, or where the cost was substantially greater than the very early estimates available when the project was divided between countries. –The items that are big enough to require the attention of the IFOP are the magnet installation and the 280m Off- Axis detector cooling system. –The total amount is small compared to the project cost, but the last bit is always hardest to find…

T2K IFOP 11/7 Imperial College/RAL Dave Wark Magnet Installation

T2K IFOP 11/7 Imperial College/RAL Dave Wark Magnet Installation

T2K IFOP 11/7 Imperial College/RAL Dave Wark Magnet Installation

T2K IFOP 11/7 Imperial College/RAL Dave Wark 280m Off-Axis Cooling System Heat input from magnet and electronics must be removed. The scintillator/fiber detectors are rather sensitive to temperature, and require T<25C for sustained periods. Integrated cooling solution being pursued, but it will not be cheap.

T2K IFOP 11/7 Imperial College/RAL Dave Wark Cost to Complete these Items Magnet refurbishment largely done. Magnet shipping contract now issued by CERN, came in within cost allocated (whew!). However there is not enough money left over to deal with magnet installation. Magnet installation currently under bid, maximum cost is 82.1 M¥ (~740 k$), unlikely(?) to be substantially less. Cooling system cost estimates not completely final, but looks like ~$500k with about $200k of that as the cost of the chillers.

T2K IFOP 11/7 Imperial College/RAL Dave Wark Cost to Complete these Items We therefore need to raise $1.2M, with about $200k of that as the cost of the chillers. Our US collaborators have agreed to approach DOE for permission to provide the chillers if enough contingency exists within their grant. Russia will contribute in kind, and if the other nations other than Japan will contribute an amount equivalent to $5k/author/year for the last two years of construction that would correspond to $1.06M, which should be sufficient to cover the magnet installation and detector cooling.