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J-PARC: Japan's High Energy Accelerator Research Complex

Overview of J-PARC, a joint project between KEK and JAEA, with facilities for materials and life science experiments, nuclear transmutation, and high-energy physics research. Construction, beamlines, and experimental areas are discussed.

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J-PARC: Japan's High Energy Accelerator Research Complex

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  1. October 15, 2008 ATHIC2008, Tsukuba J-PARC Overview Shoji NagamiyaJ-PARC Center High Energy Accelerator Research Organization (KEK)Japan Atomic Energy Agency (JAEA)

  2. October 15, 2008 ATHIC2008, Tsukuba J-PARC Overview Shoji NagamiyaJ-PARC Center High Energy Accelerator Research Organization (KEK)Japan Atomic Energy Agency (JAEA)

  3. J-PARC Facility Hadron Beam Facility Materials and Life Science Experimental Facility Nuclear Transmutation (Phase 2) ５００ｍ Neutrino to Kamiokande 3 GeV Synchrotron (25 Hz, 1MW) 50 GeV Synchrotron (0.75 MW) Linac (330m) GeV=10９　electron volt J-PARC = Japan Proton Accelerator Research Complex Joint Project between KEK and JAEA 2

  4. Location of J-PARC at Tokai 295 km JAEA Tokai 1 hour J-PARC Tsukuba

  5. Materials & Life Sciences at 3 GeV Nuclear & Particle Physics at 50 GeV R&D toward Transmutation at 0.6 GeV Goals at J-PARC Need to have high-power proton beams  MW-class proton accelerator (current frontier is about 0.1 MW)

  6. 50 GeV Synchrotron 500 m 3 GeV Synchrotron Linac CY2007 Beams JFY2008 Beams J-PARC Facility (KEK/JAEA） North to South Accelerators Bird’s eye photo in January of 2008

  7. 3 GeV Synchrotron (350ｍ） Linac（330ｍ） Superconducting magnets for the neutrino beamline 50GeV Synchrotron（1600 ｍ）

  8. KEK Portion JAEA Portion Phase 1 and Phase 2 • Phase 1 + Phase 2 = 1,890 Oku Yen (= $1.89 billions if $1 = 100 Yen). • Phase 1 = 1,527 Oku Yen (= $1.5 billions) for 〜8 years. • JAEA: 860 Oku Yen (56%), KEK: 667 Oku Yen (44%).

  9. Now Open to Users Construction Start Construction Schedule Time when this schedule was created (J-PARC Center started)

  10. Linac 3 GeV Synchrotron Neutrino Beams(to Kamioka) Materials and Life Experimental Facility 50 GeV Synchrotron CY2007 Beams Hadron Exp. Facility JFY2008 Beams JFY2009 Beams J-PARC Facility (KEK/JAEA） South to North Experimental Areas Bird’s eye photo in January of 2008

  11. Materials and Life Experimental Facility Facility similar to SNS in the US and to ISIS in the UK

  12. Neutron Beam Lines (23 total) Neutron Beam Lines (23 total) Target Station Scattered Neutrons Experimental Devices Proton Beam Materials & Life Experimental Facility Neutron Scattering Area Muon Experimental Area Proton Beam

  13. The 1st Hall Muon Production Area Mercury Target for Neutrons Container Rail Muon Hall Neutron Source The 2nd Hall The 1st Hall （Neutron Area） 2008.5.30. First Neutrons 2008.12. Open to Users Experimental Hall

  14. Preparation of Neutron Equipments • 23 beam liens are available. • Application for equipment open to public. • About 10 equipments within JFY2008. IBARAKI Biological Crystal Diffractometer - Ibaraki Prefecture Super High Resolution Powder Diffractometer (SHRPD) - KEK Nuclear Interaction （Hokkaido、ＪＳＴ） Protein Dynamics Analysis Instrument (DIANA) – JAEA Fundamental physics （KEK) Beam Test （JAEA） • 4d Space Access Neutron • Spectrometer(4SEASONS) • Grant-in-Aid for Specially • Promoted Research, MEXT, Proton beam Life Science High-intensity Versatile Neutron Total Diffractometer - KEK, NEDO Materials Science IBARAKI Materials Design Diffractometer - Ibaraki Prefecture Engineering Diffractometer - JAEA High-intensity SANS (HI-SANS) - JAEA Neutron Reflectometer with Horizontal-Sample Geometry - KEK

  15. Example of Test Results in June, 2008 Obtained at KEK KENS Bragg Diffraction Result at J-PARC (world record) Lattice distance

  16. Neutron Source Moderator Neutrons from Reflector Neutron beams Protons Toward beamline Hydrogen AIC Decoupler（blue） Covers around the entire surface Ag,In,Cd New Invention for Moderator

  17. Muon Lifetime and Muon Rotation Muon Spin Rotation in a Magnetic Field September 26, 2008 Lifetime = 2.2 ms

  18. 1.5 years ahead Actual Expected Power vs. Actual Power November of 2003 Power at KEK-Booster = 3 kW

  19. Number of Users: about 400 (about 1/6 from Japan) 295 km West Super Kamiokande Neutrino Experimental Facility Experiments with Intense Neutrino Beams

  20. J-PARC ４１．４ｍ Mu Neutrino Electron Neutrino ４０ｍ For example 100 neutrinos 150 neutrinos 大気ニュートリノ 加速器ニュートリノ Electron neutrinos Mu neutrinos n m Kamoka, K2K, MINOS, etc. KamLAND, SNO 太陽ニュートリノ T2K n 原子炉ニュートリノ n e t Neutrino Oscillation (T2K) Experiment T2KExp. Super Kamiokande 一コマ 一コマ 100 times sensitivity as compared with K2K Dissapearance of neutrions←→Finite Mass 13←→　Mixing between the 1st and 3rd generation CP violation experiment later by increasing intensity Competition with FNAL and CERN !

  21. Neutrino spectra at diff. dist 1.5km 295km 0.28km Layout for Neutrino Experiment p p • Muon monitors @ ~140m • spill-by-spill monitoring of p-beam direction/intensity • First Front detector@280m • 0 degree definition • High stat. neutrino inter. studies • Second Front Detector @ ~2km • Ultimate systematics • Now fixing the site • Far detector @ 295km • Super-Kamiokande (50kt) n Future negotiation 2.5 o 0 m 140 m 280 m 2 km 295 km Included in the budget Dominant Systematic Error in K2K

  22. T2KK Ishitsuka et al. PRD 72 (2005) 033003 sign(Dm2) CP violation Hyper-K T2KK (0.27+0.27Mt) 2s 3s T2K-II (0.54Mt) Distance from the target (km) Korea L=1000~1250km OA 1.0~2.5deg JPARC Kamioka L=295km OA2.5deg Off-axis angle K. Hagiwara Nucl. Phys. Proc. Suppl. 137 84 (2004)

  23. Neutrino Area Beams in JFY2009 Production Area and Decay Volume Buried under the ground. Production Area （p + A → p） Decay volume （p → m + n）

  24. Number of Users: about 600 Hadron Experimental Facility Experiments with Intense K-Meson Beams (Kaon Factory)

  25. K S Shrinkage by 50% in radius Y. Akaishi, et al. PL B613,140 (2005) Nucleus K Meson  S High Res. Exp. Shrinkage by 20 % in radius K. Tanida, et al. PRL 86 1982 (2001) Hyper nucleus  S Proton or Neutron Quark ? Anti-quark Implantation of Hadron in the Nucleus K- Bound State M. Angello, et al. PRL 94, 212303 (2005) Partial deconfinement of quarks  Mass change Day-1 Experiments at Hadron Facility

  26. order parameter Meson Implantation pMeson RHIC LHC J-PARC Inside nuclear matter the order parameter for pion could be reduced by 1/3 (i.e., partial restoration of chiral symmetry) Pion Implantation K. Suzuki, et al., Phys. Rev. Lett. 92, 072302 (2004)

  27. Now Hadron Area Beam within JFY2008 Hadron Experimental Area Summer in 2007

  28. ISIS FNAL G S I CERN SNS Center in neutrino Hadron (Kaons) Center in neutrons Hadron (antiprotons) ISIS：英国ラザフォード研究所の中性子源、SNS：米国オークリッジ国立研究所の中性子源 CERN：欧州合同原子核研究機構、FNAL：米国フェルミ国立研究所 ISIS：英国ラザフォード研究所の中性子源、SNS：米国オークリッジ国立研究所の中性子源 CERN：欧州合同原子核研究機構、FNAL：米国フェルミ国立研究所、GSI：ドイツ重イオン研究所 ISIS：英国ラザフォード研究所の中性子源、SNS：米国オークリッジ国立研究所の中性子源 CERN：欧州合同原子核研究機構、FNAL：米国フェルミ国立研究所、GSI：ドイツ重イオン研究所 World Center • Materials and Life: One of three world centers, in particular, in Asia. • Hadron physicsA unique kaon factory in the world. • Neutrino physics: As a world leader among the three world centers. • World leading accelerator facility is about to be completed. • Internationalization is, however, the urgent issue to solve! J-PARC Formation of the world center is the next issue! ISIS：英国ラザフォード研究所の中性子源、SNS：米国オークリッジ国立研究所の中性子源 CERN：欧州合同原子核研究機構、FNAL：米国フェルミ国立研究所、GSI：ドイツ重イオン研究所

  29. Major Upgrades under Discussions • Neutrons and Muons • Neutron equipments: How to fill the 23 beamlines (so far about ten were funded). • Muon equipments: Among four beamlines, only one will be in operation in 2008. Others have to be funded. • Hadrons • Must construct several kaon beamlines plus a primary beamline. • Hadron hall expansion (Phase 2: 60m in length to 100m): Necessary to accommodate many user groups (Many requests on this at the Int. Workshop (NP08) held on 5-7 March of 2008). • Neutrinos • Power upgrade. • The third detector (at 2 km from J-PARC or at Okinoshima/Korea). • Nuclear Transmutation • The major item for Phase 2 … Main Goal for JAEA. • Others • Energy upgrade to 50 GeV. • Third extraction line or Fast Extraction at Hadron Hall? • Polarized protons, heavy-ions, ….

  30. Summary Unique Accelerator ProjectMulti-purpose facility World class proton facility  Variety of secondary beams  Multipurpose Broad fields in Science (materials and Life, Nuclear and Particle, Nuclear Industrial, etc.)  Interdisciplinary facility Big facility with small users (over 1000 user groups) Open to users for Materials and Life in December of 2008. Start to use the hadron facility within JFY2008. Neutrino beams in JFY2009. Open the Facility to International Scientific Communities and Domestic Industries Internationalization is still not sufficient. Need to improve this aspect. Open to industries in the area of neutron sciences. Future Issues: Production of Top-Level Scientific Results Production of world leading results. Operation of the facility as the User Facility. International facility. Open to any countries in the world. Easier access by the industries.

  31. Original KEK INS, U. Tokyo Meson Lab. U. Tokyo JAERI JNC Present KEK (Govn’t Org.) JHF Neutron Project J-PARC Suggestion of Joint Effort Monbu-sho STA Construction Start MEXT (Ministry of Educ., etc. and Technologies) PS Operation Neutrino Const. Start Present KEK (Non Govn’t Org.) New rule for the operational fund New Joint Institution (JAEA) Phase 1 Completion JRR-3M Operation J-PARC Operation Neutrino Start 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 J-PARC Center

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