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Japan Proton Accelerator Research Complex J-PARC - Nuclear and Particle Physics Facility -

Japan Proton Accelerator Research Complex J-PARC - Nuclear and Particle Physics Facility -. Shin’ya Sawada KEK (High Energy Accelerator Research Organization, Japan). Accelerator Configuration. Cascaded Accelerator Complex:. Hadron Hall (Slow Extracted Beams).

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Japan Proton Accelerator Research Complex J-PARC - Nuclear and Particle Physics Facility -

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  1. Japan Proton Accelerator Research ComplexJ-PARC- Nuclear and Particle Physics Facility - Shin’ya Sawada KEK (High Energy Accelerator Research Organization, Japan) Shin'ya Sawada @ Hadron Structure at J-PARC

  2. Accelerator Configuration • Cascaded Accelerator Complex: Hadron Hall (Slow Extracted Beams) 3GeV Rapid Cycling (25Hz) Synchrotron Neutrino Beamline to Super-Kamiokande Linac Materials and Life Science Facility 50GeV Synchrotron Shin'ya Sawada @ Hadron Structure at J-PARC

  3. the High Intensity Frontier J-PARC: • J-PARC aims for the high intensity frontier for • materials/life sciences (3GeV), and • nuclear/particle physics (50GeV) • High intensity proton beam leads to high intensity secondary (neutron, meson, …) beam. • The power (= Energy x Current) is a good measure. • Neutron: from 0.16MW (ISIS) to 1MW • K meson: 5 to 10 times more intense than existing BNL-AGS. Shin'ya Sawada @ Hadron Structure at J-PARC

  4. Phase 1 & 2 • The budget for about 2/3 of the entire project has been approved by the Japanese government from JFY2001 as Phase 1. • Phase 1 (~151 billion Yen) consists of major accelerator components and a part of experimental facilities. Shin'ya Sawada @ Hadron Structure at J-PARC

  5. Construction Schedule & Commissioning (Phase-1) Shin'ya Sawada @ Hadron Structure at J-PARC

  6. Scenes of Construction Shin'ya Sawada @ Hadron Structure at J-PARC

  7. Performance of the 50-GeV PS Numbers in parentheses are ones for the Phase 1. • Beam Energy： 50ＧｅＶ (30GeV for Slow Beam) (40GeV for Fast Beam) • Repetition: 3.4 ~ 5-6s • Flat Top Width： 0.7 ~ 2-3s • Beam Intensity: 3.3x1014ppp, 15mA (2×1014ppp, 9mA) ELinac = 400MeV(180MeV) • Beam Power: 750kW (270kW) Shin'ya Sawada @ Hadron Structure at J-PARC

  8. Scenes of Construction • 50 GeV Area Shin'ya Sawada @ Hadron Structure at J-PARC

  9. Neutrino Facility- Fast Extracted Beam - Shin'ya Sawada @ Hadron Structure at J-PARC

  10. T2K (Tokai-to-Kamioka) Neutrino Experiment • Status of n oscillation and neutrino mass: • Atmospheric n experiments (SK…) discovered neutrino oscillation and thus finite masses of neutrinos. • K2K nm disappearance experiment confirmed the existence of the neutrino oscillation with “man-made” neutrinos. Super-K: 50 kton Water Cherenkov ~1GeV nm beam (100 of K2K) J-PARC 0.75MW 50GeV PS Phase2: Hyper-K? Phase2: 4 MW ? • Motivations of T2K (Tokai to Kamioka): • Precise measurement of disappearance nm to nx. • Discovery of ne appearance: High flux of nm enables us to observe it. • Flux (nm) at the 50 GeV PS > 100 x Flux (nm) at KEK 12 GeV PS • Future upgrade … towards CP violation in the lepton sector Shin'ya Sawada @ Hadron Structure at J-PARC

  11. Neutrino Facility • inward beam extraction • proton line with SC combined- function magnets • variable off-axis angle between 2-3 degrees • 130m long decay section • a near detector at 280 m • another detector planned at 2km Shin'ya Sawada @ Hadron Structure at J-PARC

  12. Super-K. Decay Pipe q Target <= On axis Off-axis Beam Horn Osc. Prob.=sin2(1.27Dm2L/En) Dm2=3x10-3eV2 L=295km • WBB (q=0) with an intentionally misaligned • beam line from the detector axis • ==> Quasi monochromatic beam • with higher Intensity than NBB osc.max. OA0° OA2° nm flux @ SK OA2.5° OA3° Shin'ya Sawada @ Hadron Structure at J-PARC En

  13. Hadron Physics Facility- Slow Extracted Beam - Shin'ya Sawada @ Hadron Structure at J-PARC

  14. Slow Extraction Beamline (Phase 1) NP-HALL 56m(L)×60m(W) 50-GeV PS A-Line Switch Yard Split Point 2% Loss T1 Target 30% Loss T0 Target 0.5% Loss Beam Dump 750kW Shin'ya Sawada @ Hadron Structure at J-PARC

  15. Hadron Hall Shin'ya Sawada @ Hadron Structure at J-PARC

  16. Ttarget disk 5.4cm Thick 50cm Diam. T1 Target R&D(by Yamanoi) ~18m ~10m Cooling water 2m Water pump Beam Beam

  17. Residual Dose 30Days Operation/1Day Cooling 1Year Operation/Half Year Cooling Concrete 7.9 mSv/h 0.03mSv/h Water Pipe (SUS) 8.4 mSv/h 2.4 mSv/h Concrete 5.3 mSv/h 1.6mSv/h Service Space Iron 60 mSv/h 11mSv/h Vacuum Duct SUS 3.2 Sv/h 1.2 Sv/h Ti1.1 Sv/h 97 mSv/h Iron 430 mSv/h 160mSv/h Iron 1.1 mSv/h 460 mSv/h 5m q1B 110 mSv/h 49 mSv/h Iron 170 mSv/h 460mSv/h Beam Collimator 710 mSv/h 420 mSv/h T1 Vessel 2.2 Sv/h 850 mSv/h Trench T1 Target 650 Sv/h 230 Sv/h Vacuum Seal 30 Sv/h 11 Sv/h Collimator 380 mSv/h 100 mSv/h Iron Base 560 mSv/h 210 mSv/h D1 530 mSv/h 270 mSv/h Q1 62 mSv/h 33 mSv/h Shin'ya Sawada @ Hadron Structure at J-PARC

  18. Upstream of Secondary Beam Lines How to solve 200kW Heat Problem? Magnets → Upstream Collimator Beam Ducts → Big Vacuum Chamber instead of Ducts Vacuum Chamber D1(7.2kW) Q1(<1kW) K1.8 Ni target (10kW) 2.4m Beam Dump Cu collimator (55kW) Cu collimator (76kW) 2.9m KL Shin'ya Sawada @ Hadron Structure at J-PARC K1.1

  19. Big Vacuum Chamber Vacuum Chamber Service Space Concrete Block • Shield blocks are also • inside the vacuum chamber. • Each magnet/collimator • has module structure • unified with shield blocks. • Chamber lid is at the • service space level. • Electric power and cooling • water are provided from • the service space. Iron Block 5m Magnet Beam Collimator T1 Target Shin'ya Sawada @ Hadron Structure at J-PARC

  20. Phase 1 Phase 2 Phase 3 50m Beam Dump: Traveling to 50m downstream for Phase 2 • 1000ton（Full Weight including Core, Shield, Cooling---) • Traveling should be completed within 1 day (eight hours) beam Shin'ya Sawada @ Hadron Structure at J-PARC

  21. Service space Concrete 9.5m Fe Cu 9m Proton beam 6m BeamDump • 750kW Heat/Radiation Load • Movable! （背面図） （正面図） Shin'ya Sawada @ Hadron Structure at J-PARC

  22. Heat analysis by MARS & ANSYS(calculated by A. TOYODA & M. MINAKAWA) • 無酸素銅 • ρ=8.9[g/cm3] • 熱伝導率390 [W/m/K] Fe:1050mm 3000mm Cu:6900mm 1000mm 6300mm Tmax:202℃ ビーム入口Φ350mm Proton beam 熱伝達係数：1000W/m2・K Proton beam 50GeV-15mA (750kW) Shin'ya Sawada @ Hadron Structure at J-PARC

  23. Maintenance Maintenance Space Water Manifold Ex. Duct Vacuum Exhaust Pillow Seal Shin'ya Sawada @ Hadron Structure at J-PARC

  24. beam Structure of traveling devices Complete remote operation with just LAN Cable! 電源・油圧ユニット Shin'ya Sawada @ Hadron Structure at J-PARC

  25. K1.8 and K1.8BR SKS+ SPES-II FF ES2 MS2 TG-window ES1 MS1 IF-window Shin'ya Sawada @ Hadron Structure at J-PARC

  26. K1.1/0.8 Beam Line (S-Type) and KL T1 IF ES1 ES2 MS1 MS2 C-Type FF Shin'ya Sawada @ Hadron Structure at J-PARC

  27. Beamline Parameters \ MS1 opening: ±1mm, MS2: ±2mm # using Sanford-Wang formula, assuming 1pulse=3.53s（0.7s flat top) $ Cloud p are not taken into account.

  28. Construction Schedule: 2004(H16) KH:2006(H18) 2005(H17) n:2008 (H20) SY:2005(H17) 2003(H15) 2006(H18) Magnets etc. at NP-Hall：2007(H19) Magnets etc. at ＳＹ：2006(H18) The first Beam to NP-Hall：2008(H20) Shin'ya Sawada @ Hadron Structure at J-PARC n-Beam：2009(H21)

  29. Dates of Remember • April 2005: We can start recycling magnets! • January 2005 : K2K shut down • December 2005 : KEK-PS shut down. The most of Hadron Hall construction team should take care of external beam lines of the KEK-PS until then. • March 2006: We can start SY settings & The most magnets should be ready until then! • March 2007: We can start Hadron Hall settings. • Jan. 2008 (Nov. 2007?): Start of 50GeV-PS commissioning! • Sept. 2008: The construction should be completed (officially) & The First External Beam! Shin'ya Sawada @ Hadron Structure at J-PARC

  30. Recycling of ν-line Magnets Shin'ya Sawada @ Hadron Structure at J-PARC

  31. Magnet Recycling in the Matching Section VEP QFP in 3.75°Bend -3.75°Bend h03 h01 q01 q02 q03 q04 q05 h05 v02 v04 7040 v06 4C220(KEK-EP2) 6D220,QC1,QC2(K2K/TRISTAN) 18D72(SLAC) Plan View 50-GeV BM (Proto-type) Shin'ya Sawada @ Hadron Structure at J-PARC

  32. Magnet Collection ProjectThe Latest Contribution for High-p Beamline 18D72 Magnet from FNAL/ANL ~4Tm, 150mm Gap, 40mm Pole Width Shin'ya Sawada @ Hadron Structure at J-PARC

  33. Summary • Neutrino Facility • Fast extracted beamline. • Expect first beam in 2009. • Hadron Facility • Slow extracted beamline. • Expect first bean in 2008. • At the day-1, we will have one primary beamline, one production target, and one secondary beamline. • Other beamlines are under consideration. • The hadron hall should be extended to the downstream in the (near) future. Shin'ya Sawada @ Hadron Structure at J-PARC

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