1. June 20, 2008Shin'ya Sawada @ Fermilab E9061 J-PARC and Dimuon Experiments Shin’ya Sawada KEK (High Energy Accelerator Research Organization, Japan)

2. June 20, 2008Shin'ya Sawada @ Fermilab E9062 J-PARC Facility 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.

3. June 20, 2008Shin'ya Sawada @ Fermilab E9063 ＭＬ Ｆ RCS ＬＩＮ ＡＣ 50GeV-PS Hd Bird’s eye photo in Feb. 2008

4. June 20, 2008Shin'ya Sawada @ Fermilab E9064 3 GeV Linac Materials & Life Experimental Hall Hadron Experimental Hall Neutrino Target Area

5. June 20, 2008Shin'ya Sawada @ Fermilab E9065 Magnetic Field Beam Current inside the Ring Injection Extraction Acceleration Acceleration and Extraction at 3 GeV 2007.10.31.14h03m23s Current 181MeV 3GeV 20 ms Injection at the minimum field and the extraction at the maximum field Beams remain inside the ring for 20 ms. Beam Loss 3NBT Beam Current （ Extracted Beams) Time Beam Current Detected at 3NBT Successful Acceleration and Extraction !!! 500ns Time Current

6. June 20, 2008Shin'ya Sawada @ Fermilab E9066

7. June 20, 2008Shin'ya Sawada @ Fermilab E9067

8. June 20, 2008Shin'ya Sawada @ Fermilab E9068 Performance of the 50-GeV PS Beam Energy ： 50 ＧｅＶ E Linac = 400MeV (30GeV for Slow Beam) E Linac = (180MeV) (30GeV 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) Beam Power: 750kW (270kW) Numbers in red are design values. Numbers in parentheses are ones for the beginning of Phase 1. Energy recovery of the linac to 400 MeV is planned just after the completion of the Phase-1 construction in 2009.

9. June 20, 2008Shin'ya Sawada @ Fermilab E9069 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 Plan to extend the hall downstream (~50m) in the Phase 2.

10. June 20, 2008Shin'ya Sawada @ Fermilab E90610 Hadron Hall July 2007 コンクリート躯体の中に は鉄遮蔽体が埋め込まれ ています

11. June 20, 2008Shin'ya Sawada @ Fermilab E90611 Beamlines at the Hadron Hall

12. June 20, 2008Shin'ya Sawada @ Fermilab E90612 Hadron Hall Today

13. June 20, 2008Shin'ya Sawada @ Fermilab E90613 Hadron Experimental Hall (Phase I) Beam Dump A-Line 56 m Extension in Phase II

14. June 20, 2008Shin'ya Sawada @ Fermilab E90614 Oct. Dec. Neutrin o

15. June 20, 2008Shin'ya Sawada @ Fermilab E90615 Important Schedule May-June, 2008: Beam injection to the 50-GeV synchrotron and trial of beam capture Summer, 2008: Installation of slow extraction equipments December 2008: Acceleration up to 30 GeV and the first slow extraction to the Hadron facility December, 2008 – February, 2009: First experiments using slow extracted proton beam at K1.8BR April, 2009: First neutrino production

16. June 20, 2008Shin'ya Sawada @ Fermilab E90616 Results of the 4 th PAC (Jan 2008)

17. June 20, 2008Shin'ya Sawada @ Fermilab E90617 Measurement of High-Mass dimuon Production at J-PARC (P-04) Collaboration Abilene Christian University, Argonne National Laboratory, Duke University, High Energy Accelerator Research Organization, University of Illinois at Urbana-Champaign, Kyoto University, Los Alamos National Laboratory, Pusan National University, RIKEN, Seoul National University, Tokyo Institute of Technology, Tokyo University of Science, Yamagata University J.K. Ahn, J. Chiba, Seonho Choi, D. Dutta, H. Gao, Y. Goto, L.D. Isenhower, T. Iwata, S. Kato,M.J. Leitch, M.X. Liu, P.L. McGaughey, J.C. Peng, P. Reimer, M. Sadler, N. Saito, S. Sawada,T.-A. Shibata, K.H. Tanaka, R. Towell, H.Y. Yoshida Collaboration members (Spokesperson: S. Sawada and J. C. Peng)

18. June 20, 2008Shin'ya Sawada @ Fermilab E90618 (A part of) Physics with Dimuon Measuremet at J-PARC

19. June 20, 2008Shin'ya Sawada @ Fermilab E90619 dbar/ubar at larger x

20. June 20, 2008Shin'ya Sawada @ Fermilab E90620 PAC Message on P04

21. June 20, 2008Shin'ya Sawada @ Fermilab E90621 Prospect and Relation with E906 Major equipments of E906 will be shipped to J-PARC after E906, in 2012? –Radiation especially of M1 be OK? Core part of the beam dump can be built as a separate module? Beamline for P04 has not been funded, and we continue to make efforts. The beam energy would be 30 GeV at the beginning of the J- PARC experiments. Physics cases even after E906 should be more emphasized, such as spin related measurements even without polarized beam and/or target. Discussion on responsibilities of P04 and modified P24 would be important.

22. June 20, 2008Shin'ya Sawada @ Fermilab E90622 Polarized Proton Acceleration at J-PARC (P24)

23. June 20, 2008Shin'ya Sawada @ Fermilab E90623 Status of P24 PAC –No decision yet. –“Although the PAC recognizes that polarized beam acceleration in the MR can be one of the future options in J- PARC, judgement of the technical feasibility of this proposal is beyond the present PAC’s scope” –“The PAC would like to hear a separate proposal with more specific discussion of the physics and proposed measurements” Revised P24 (or another number), with physics emphasis, will be submitted to the next PAC meeting (October 2008).

24. June 20, 2008Shin'ya Sawada @ Fermilab E90624 Hadron hall Users’ Association Hadron hall Users’ Association = HUA = was founded in March, 2007. Now the Chair of HUA is a member of J-PARC Users Steering Committee Send email to hua-sec@rcnp.osaka-u.ac.jp to join.hua-sec@rcnp.osaka-u.ac.jp

25. June 20, 2008Shin'ya Sawada @ Fermilab E90625 Users Steering Committee New members were elected in November of 2007. Representatives from four communities are included. Roadmap of the future J-PARC will be discussed at this committee. –Discussion items by this committee were re-identified. –The committee will start intense discussions from February about future plans of the J-PARC. Phase 2 for J-PARC will be discussed first at this Committee

26. June 20, 2008Shin'ya Sawada @ Fermilab E90626 Summary J-PARC has achieved 3-GeV beams at RCS and the 50-GeV synchrotron already. The first 30-GeV slow extracted beam is expected around the end of this year. Our proposals, P04 for unpol. dimuon measurement and P24 for pol. proton acceleration with experiments, are “deferred”. HUA has been founded. Your participation is very much welcome.