1. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 1 Japan Proton Accelerator Research Complex J-PARC - Nuclear and Particle Physics Facility - Shin’ya Sawada KEK (High Energy Accelerator Research Organization, Japan)

2. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 2 Accelerator Configuration Cascaded Accelerator Complex: Linac 3GeV Rapid Cycling (25Hz) Synchrotron 50GeV Synchrotron Materials and Life Science Facility Hadron Hall (Slow Extracted Beams) Neutrino Beamline to Super-Kamiokande

3. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 3 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. the High Intensity Frontier

4. December 1, 2005Shin'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.

5. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 5 Construction Schedule & Commissioning (Phase-1)

6. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 6 Scenes of Construction

7. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 7 Performance of the 50-GeV PS Beam Energy ： 50 ＧｅＶ (30GeV for Slow Beam) (40GeV for Fast Beam) Repetition: 3.4 ~ 5-6s Flat Top Width ： 0.7 ~ 2-3s Beam Intensity:3.3x10 14 ppp, 15  A (2×10 14 ppp, 9  A) E Linac = 400MeV (180MeV) Beam Power: 750kW (270kW) Numbers in parentheses are ones for the Phase 1.

8. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 8 Scenes of Construction 50 GeV Area

9. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 9 Neutrino Facility - Fast Extracted Beam -

10. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 10 T2K (Tokai-to-Kamioka) Neutrino Experiment Status of oscillation and neutrino mass: – Atmospheric experiments (SK…) discovered neutrino oscillation and thus finite masses of neutrinos. – K2K  disappearance experiment confirmed the existence of the neutrino oscillation with “man-made” neutrinos. Motivations of T2K (Tokai to Kamioka): Precise measurement of disappearance  to x. Discovery of e appearance: High flux of  enables us to observe it. – Flux (  ) at the 50 GeV PS > 100 x Flux (  ) at KEK 12 GeV PS Future upgrade … towards CP violation in the lepton sector ~1GeV  beam (100 of K2K) J-PARC 0.75MW 50GeV PS Super-K: 50 kton Water Cherenkov Phase2: 4 MW ? Phase2: Hyper-K?

11. December 1, 2005Shin'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

12. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 12 Osc. Prob.= sin 2 (1.27  m 2 L/E )  m 2 =3x10 -3 eV 2 L=295km ■ WBB (  =0) with an intentionally misaligned beam line from the detector axis ==> Quasi monochromatic beam with higher Intensity than NBB osc.max. E Off-axis Beam  Target Decay Pipe Super-K. Horn OA3° OA0° OA2° OA2.5°  flux @ SK <= On axis

13. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 13 Hadron Physics Facility - Slow Extracted Beam -

14. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 14 Slow Extraction Beamline (Phase 1) NP-HALL 56m(L)×60m(W) 50-GeV PS T1 Target 30% Loss Beam Dump 750kW Switch Yard A-Line T0 Target 0.5% Loss Split Point 2% Loss

15. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 15 Hadron Hall

16. December 1, 200516 T1 Target R&D (by Yamanoi) Beam Ttarget disk 5.4cm Thick 50cm Diam. Cooling water ~18m ~10m Beam 2m Water pump

17. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 17 Water Pipe (SUS) 8.4  Sv/h 2.4  Sv/h 5m T1 Vessel 2.2 Sv/h 850 mSv/h Collimator 380 mSv/h 100 mSv/h Beam Concrete 7.9  Sv/h 0.03  Sv/h Collimator 710 mSv/h 420 mSv/h q1B 110 mSv/h 49 mSv/h Iron Base 560 mSv/h 210 mSv/h Service Space Trench 30Days Operation/1Day Cooling 1Year Operation/Half Year Cooling D1 530 mSv/h 270 mSv/h Q1 62 mSv/h 33 mSv/h T1 Target 650 Sv/h 230 Sv/h Vacuum Duct SUS 3.2 Sv/h 1.2 Sv/h Ti 1.1 Sv/h 97 mSv/h Vacuum Seal 30 Sv/h 11 Sv/h Residual Dose Concrete 5.3 mSv/h 1.6  Sv/h Iron 60  Sv/h 11  Sv/h Iron 430  Sv/h 160  Sv/h Iron 1.1 mSv/h 460 mSv/h Iron 170 mSv/h 460 mSv/h

18. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 18 Upstream of Secondary Beam Lines Magnets → Upstream Collimator Beam Ducts → Big Vacuum Chamber instead of Ducts How to solve 200kW Heat Problem? Ni target (10kW) D1(7.2kW)Q1(<1kW) Beam K1.8 Cu collimator (76kW) 2.4m Dump Vacuum Chamber Cu collimator (55kW) 2.9m K1.1 KL

19. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 19 Big Vacuum Chamber Service Space Vacuum Chamber 5m Collimator Magnet Iron Block Concrete Block Beam T1 Target 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.

20. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 20 50 m Phase 2Phase 3 Phase 1 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

21. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 21 BeamDump 750kW Heat/Radiation Load Movable! Proton beam Service space Cu Fe Concret e 9.5m 6m 9m （背面 図） （正面 図）

22. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 22 Heat analysis by MARS & ANSYS (calculated by A. TOYODA & M. MINAKAWA) Proton beam Cu:6900m m Fe:1050m m 3000mm ビーム入 口 Φ350mm T max :202 ℃ 熱伝達係 数： 1000W/m 2 ・ K 6300mm 1000mm 無酸素銅 –ρ=8.9[g/cm 3 ] – 熱伝導率 390 [W/m/K] Proton beam 50GeV-15  A (750kW)

23. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 23 Maintenance Maintenance Space Pillow Seal Ex. Duct Water Manifold Vacuu m Exhaus t

24. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 24 Structure of traveling devices Complete remote operation with just LAN Cable! beam 電源・油圧ユニッ ト

25. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 25 K1.8 and K1.8BR ES1 ES2 MS2 MS1 IF-window TG-window FF SKS+ SPES-II

26. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 26 K1.1/0.8 Beam Line (S-Type) and KL MS2 MS1 IF FF T1 ES1 ES2 C- Type

27. December 1, 200527 Beamline Parameters K1.8K1.8BRK1.1 (S-Type) Max. Mom.~2 GeV/c1.2 GeV/c1.1 GeV/c Length45.853 m17.573 m27.05 m Acceptance1.4 msr.%2.5 msr.%4.1msr.% \ Intensity (ppp)# K - ( × 10 6 ) K + ( × 10 6 ) 50 GeV 15  A 30 GeV 9  A 50 GeV 15  A 30 GeV 9  A 50 GeV 15  A 30 GeV 9  A 50 - 1530 - 9 1.8 GeV/c6.61.4 1.1 GeV/c0.380.085.51.29.12.08111 0.8 GeV/c1.0 0.21.70.4182.5 0.6 GeV/c0.20.052.60.4 DC- Separator 750kV/10cm 6m×2 500kV/10cm 6m 750kV/10cm 2m×2 K  /   $ 8 ( 1.8 GeV/c ) 6.97.5 (1.1 GeV/c )6.84.3 (1.1 GeV/c ) 4.7 X/Y size @ FF19.8/3.2 mm(FWHM) 5.9/2.9 mm(FWHM) 10/6 mm(FWHM) \ MS1 opening: ±1mm, MS2: ±2mm # using Sanford-Wang formula, assuming 1pulse=3.53s （ 0.7s flat top) $ Cloud  are not taken into account.

28. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 28 Construction Schedule: Magnets etc. at NP-Hall ： 2007(H19) 2004(H16) 2003 (H15) 2005 (H17) 2006(H18) KH:2006 (H18) Magnets etc. at ＳＹ： 2006(H18) :2008 (H20) The first Beam to NP-Hall ： 2008(H20) -Beam ： 2009(H21) SY:2005 (H17)

29. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 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!

30. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 30 Recycling of ν-line Magnets

31. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 31 Plan View 3.75°Bend -3.75°Bend 50-GeV BM (Proto-type) 7040 QFP in VEP q01q02 h03 h05 v04 q03q04q05 h01 v02 Magnet Recycling in the Matching Section 18D72(SLAC) v06 6D220,QC1,QC2(K2K/TRISTAN) 4C220(KEK-EP2)

32. December 1, 2005Shin'ya Sawada @ Hadron Structure at J-PARC 32 Magnet Collection Project The Latest Contribution for High-p Beamline 18D72 Magnet from FNAL/ANL ~4Tm, 150mm Gap, 40mm Pole Width

33. December 1, 2005Shin'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.