1 J-PARC Status - Conquering the earthquake disaster and a new step forward to MW J-PARC operation - Yujiro Ikeda J-PARC Center JAEA & KEK Meeting for the Hyper- Kamiokande Project at KIPMU

2 ADS: Nuclear Transmutation (Phase 2) Joint Project between KEK and JAEA since 2001 with 1.9 B$ 2 Materials and Life Science Experimental Facility Hadron Beam Facility ５００ｍ Linac (330m) Neutrino to Kamiokande J-PARC Facility 3 GeV Rapid Cycle Synch. (25 Hz, 1MW) 50 GeV Main Ring (0.75 MW) J-PARC = Japan Proton Accelerator Research Complex

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

4 Goals at J-PARC Need to have high-power proton beams  MW-class proton accelerator R&D toward Transmutation at 0.6 GeV Nuclear & Particle Physics at 50 GeV Materials & Life Sciences at 3 GeV

5 Before the Earthquake

6 Power upgrade scheme before J-PARC Power Expectation [MW] JFY2008 JFY2009 JFY2010 JFY2011 JFY2012 JFY2013 JFY kW 3 GeV MR 30 GeV 200 kW MR 115 kW Earthquake 145 kW Operation Start

7 1/T ( 温度 ) log ( 伝導率 ) 常温 New materials Tokyo Institute of Technol.,Toyota 、 ＫＥＫ, issued 「 Nature Materials 」 Present Ceramics for Li battery materials Crystal structure P4 2 /nmc (137); a = (18) Å, c = (4) Å Neutron Defraction Japanese press highlighted Steady production of good exciting results

8 Excitement from T2K 8 Expected BG 1.5±0.3evts 6 e candidates found! (  m 23 2 >0)(  m 23 2 <0) Central value 90%CL range Prob. of 6 are all BG: 0.7% (2.5  equiv) Allowed region Selected to Physics World Top 10 Breakthroughs (England) in news/48126 Indication of e appearance (non-zero  13 )

9 TOF counters I have done ! Hadron Hall bustles ---waiting for beam Students, researchers, technicians, Professors, ・・・, from worldwid first beam K1.8 first beam KOTO (E15) experimental team K1.8 experimental preparation K1.8BR preparation New commerK1.8 area completion of TOF counter setup KL measurement room at midnight KL background measurement

10 Before earthquake – 200kW beam, 400kW power tested – 145kW for MR FX, 6 events of electron neutrino – Experiments started at Hadron Hall – Scientific production form MLF users – JAEA ： Public User Program under a Law started Open for international users and industries – Throughout all facility, internationalization endeavor is needed – Effective program for foreign scientist to come – More promotion of neutron to industry Summary

11 Recovery from the Earthquake

12 LINAC Immediately after the Earthquake After recovery The road rose up Ground water of 100 ton came into LINAC tunnel :: alert for submergence The ground droped down with 1.5 m Water was discharged

13 3 GeV Synchrotron (RCS) The capacitor bank collapsed new old Immediately after the earthquake: there were road winding and landslid The stage of power supply was bent. Lifted up

14 50 GeV Synchrotron (MR) Amplified x mm 0.6 mm Height horizontal vertical Maximum 20 mm displacement (horizontal) and 8 mm (vertical) for 400 magnets Beam line distorted seriously All adjusted to within 0.4 mm.

15 Materials & Life Science Experimental Facility (MLF) Immediately after the Earthquake Re-stacking all blocks 530 pieces and 2800 tons in total (Experimental Halls) West Extended Building Subsided ~20 cm There were no severe damages in the MLF main building. Piling into basement rock Dislocated a lot! The entire annex building was jacked up.

16 Neutrino & Hadron Experimental Facilities An outdoor unit leaned. The ground sank. recovered Fixed

17 MLF User Program Investigation Recovery Power-on Test New Hg Target Shielding recovery BL Components MLF User Operation NU Experiment Cooling Water Alignment Recovery NU or HD Operation 3GeV synchrotron 50GeV synchrotron Materials & Life Science Experimental Facility Hadron Experimental Facility Neutrino Experimental Facility Investigation Recovery HD Experiment All the J-PARC members worked hard and coherently to attain the December Recovery. Beam Injection Beam Commissioning Power-on Test Extended Bulg Infrastructure Linac RCS MR MLF Hadron Neutrino Beam Test User Operation Start Emergency Recovery Full Recovery Work J-PARC Recovery Schedule ）

18 December 9, :30 Key was on. 14:00 Beam went throughout the Linac at 3 MeV with RFQ acceleration. Nov. of The first beam was on at the Linac. 3 days before the target date Remarkably fast recovery

19 Resuming User Operation

20 History of beam power (3GeV RCS) 280 kW on June kW Restored the J-PARC from the Great East Japan Earthquake within a year. Smooth recovery has been achieved

21 Trend of Number of Proposals Affiliation of approved proposals (General Use) Very high fractional ratio of industrial applications Neutron and Muon User Program Increase of proposals

22 Recent Results 10 electron neutrino candidates are detected Expected BG (  13 =0) is estimated to be 2.73±0.37 evts Probability to observe >=10 evts w/  13 =0 is 0.08% (3.2  ) –C.f. 0.7% (2.5  ) in 2011 Evidence of ELECTRON NEUTRINO APPEARANCE Reported at the IIV International Conference on Neutrino Physics and Astrophysics (Neutrino2012)

23 Summary Quick recovery for the earthquake –Facility and beam is on. –User operation resumed. Stable operation since then –Till now, 3GeV 200kW, even 300kW at MLF, –Keeping 8 cycle user time, –In 2013, preparatory work for 1MW at RCS will be shceduled.

24 Govrnment review and 5year plans After previous review 5 years ago The great east Japan earth quake Next 5 years plan and priority 2012 March to June

25 Accelerator and neutrino : Power –RCS  1 MW –MR  750kW （ MR Power supply improvement ） Neutron –New BL (JAEA 3, KEK 1), Computer, Sample environment Muon –New S-line (  SR) and H-line (g-2, EDM) ハドロン –High momentum beam line + COMET (  ->e) ADS(Accelerator Driven Nuclear Transmutation) Facility buildings –User main building, Radioactive materials storage, Lodging Clear prioritize is needed Red = JAEA Blue = KEK High priority demands from now Keeping budget for 200 days operation is critical key. ＊ cost rise is headache.

26 Near term operation schedule

27 FY2012 operation schedule As many as possible, provide user time 8 cycles （～ 180 days ） From October, RCS for ＭＬＦ :>300kW ＭＲ for ＦＳ >200kW for SX>10kW To keep machine time as much as for 5 s of neutrino events. Continue operation regardless of the new year holiday

28 Installation and tests of all needed for 1MW: 400 MeV LINAC 1MW Ion source, RFQ 132 days user operation time FY2013 operation schedule Trying to keep enough machine time for 5 s statistics of neutrino events!! Operate by the end of July even it is Summer time!! Time Shift Cost pushing

29 Promise J-PARC is the facility to get as much value you can in your science. Thank you very much for your attention!