Welcome to J-PARC NBI 2017

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1 The 10th International Workshop on Neutrino Beams and Instrumentation (NBI 2017), IVIL, Tokai-mura, September 2017 Welcome to J-PARC NBI 2017 Tadashi Koseki J-PARC Center, KEK &JAEA

2 Hadron accelerators in the world 1 MW 2 J. Wei / Y. Yamazaki

3 Neutrino Beam to Kamioka Material and Life Science Experimental Facility (MLF) Hadron Experimental Facility(HEF) 3

Interruption due to troubles of Hg-target Time (ms) - 500 kw in max. achieved for user operation - 1 MW demonstration (4.

4 Beam power history of RCS for MLF Demonstration of 1 MW-eq. beam in RCS Number of particles / pulse (x10 13 ) 8.41 x ppp:1010 kw-eq x :944 kw-eq x :825 kw-eq x :696 kw-eq x :568 kw-eq. Interruption due to troubles of Hg-target Time (ms) kw in max. achieved for user operation - 1 MW demonstration (4.2x10 13 ppb) was successfully performed. - After replacing the Hg-target in the 2017 summer, beam power will be recovered. Beam loss is well controlled up to 1 MW eq.

5 History of MR beam power Beam stop due to the earthquake Beam stop due to the radioactive material leak incident in HEF Achieved beam power: Fast extraction ~ 470 kw (2.4 x10 14 ppp) for users, 516 kw for demonstration. Slow extraction ~ 44 kw (5.1 x10 13 ppp) for users, 50 kw for demonstration.

6 Neutron Instruments at MLF NOBORU (JAEA) PLANET (JAEA, U. of Tokyo) SPICA (NEDO, KEK) SHRPD(KEK) VIN_ROSE (KEK, Kyoto Univ.) NOP(KEK) ANNRI (Tokyo Tech. U., JAEA,, Hokkaido U.) ibix (Ibraki Pref.) The first neutron in May, Neutron Beam Ports From Fundamental Physics to Industrial Uses : 20 (June, 2017) Construction/Commissioning:1 Constructed by HRC (KEK) AMATERAS (JAEA) DNA (JAEA) 4SEASONS (JAEA) Construction POLANO (Tohoku Univ,, KEK) RADEN (JAEA) KEK JAEA Ibaraki Prefecture Universities, Institutes & Government organizations... Yearly Days ~180 TAIKAN (JAEA) NOVA (NEDO, KEK) SOFIA (KEK) SHARAKU (JAEA) SENJU (JAEA) TAKUMI (JAEA) IAC 2017 imateria (Ibraki Pref..)

7 Muon Facility MLF H-Line S-Line Fundamental Science with a large scale international coll. Accommodate many μsr experiments U-Line D-Line Very unique ultra-slow muon beam Mid-intensity beam line Ｆor general use IAC 2017

Search for charged LFV process (First phase of the COMET experiment) K1.

8 Experiments at Hadron Hall New primary beam lines are under construction: Hi-mom BL for studies of hadron properties in nuclear matter. Search for charged LFV process (First phase of the COMET experiment) K1.8BR Hadron Physics K1.1/K1.1BR K1.8 Strangeness Nuclear Physics Kaon Rare Decay KL High momentum Hadron Mass Shift COMET Phase I e conversion

9 Neutrino monitor bld. Neutrino Beamline and T2K experiment Combined function superconducting magnet

10 Beam power and POT of T2K Accumulated from 23 Jan. 2010: 2.25x10 21 POT (29 % of approved) Neutrino Beam : 1.49 x10 21 POT(66.2 %) Anti-Neutrino Beam : 0.76 x10 21 POT(33.8%) 10

2015/2016 : Great years for neutrino physics Nishikawa-san &

experiments. Nishikawa-san won the 2016 B.

Soo-Bong KIM, for his outstanding contributions to the study

11 2015/2016 : Great years for neutrino physics Nishikawa-san & K2K/T2K won the 2015 breakthrough prize with 4 other neutrino experiments. Nishikawa-san won the 2016 B. Pontecorvo prize with Prof. Yifang WANG, Prof. Soo-Bong KIM, for his outstanding contributions to the study of the neutrino oscillation phenomenon and to the measurement of the θ 13 in the T2K experiment.

12 T2K and NOvA NOvA far detector 22.5 kton Water cerenkov detector 14 kton Scintillator detector Super Kamiokande 295 km J-PARC Paul Derwent, in APS Meeting 2017 Fermilab 12

X. Lu, Latest T2K Neutrino Oscillation Results, PANIC2017, Beijing, 2 Sep. 2017 Recent T2K results T.

13 X. Lu, Latest T2K Neutrino Oscillation Results, PANIC2017, Beijing, 2 Sep Recent T2K results T. Nakaya, Neutrino physics from particle beam and decay experiments, ESP conf. HEP, 5-12, July, 2017 CP conservation is excluded in lepton sector at 95 % CL. Tension between T2K and NOvA More neutrinos!!

14 Mid-term plan of MR upgrade (Revised in Jan. 2017) JFY New buildings Long shutdown FX power [kw] > SX power [kw] Cycle time of main magnet PS New magnet PS High gradient rf system 2 nd harmonic rf system Ring collimators s 2.48 s 1.3 s 1.3 s 1.3 s 1.3 s Installation Add.coll imators (2 kw) Mass production installation/test Manufacture, installation/test Add.colli. (3.5kW) Injection system FX system SX collimator / Local shields Ti ducts and SX devices with Ti chamber Kicker PS improvement, Septa manufacture /test Kicker PS improvement, FX septa manufacture /test ESS Local shields

New power supply for high repetition rate operation Large scale PS for bending magnets and quad.

power) ) AC DC Convert or DC DC Convert or Filter Two large converters and large capacitance for energy

mass production of the PS s have been approved by the government in JFY2016.

15 New power supply for high repetition rate operation Large scale PS for bending magnets and quad. magnets in arc setions Transformer Small 小電力 power 大電力 Large ( power 全磁気エネルギー (full mag. power) ) AC DC Convert or DC DC Convert or Filter Two large converters and large capacitance for energy recovery, symmetric power module circuit C bank Budget for three buildings of the magnet PS s and starting mass production of the PS s have been approved by the government in JFY2016. Magnet D1-3: existing buildings D4-6: New buildings D6 D3 D4 D4 under construction D1 Capacitor banks D1 D4 D5 D2 D5 Building construction will be finished in D2

16 Mid-term plan of MR upgrade for FX RF upgrade Magnet PS upgrade s cycle Add two 2 nd H_RFs s cycle Target Power ~1.3 MW JFY

Hyper-Kamiokande (2026 -) T. Kobayashi/T.

better photon sensitivity Beam power : 1300 kw Distance : 295km

17 Hyper-Kamiokande (2026 -) T. Kobayashi/T. Nakaya Hyper-K: 190 kton Water Cerenkov detector A new PMT has x2 better photon sensitivity Beam power : 1300 kw Distance : 295km Detector : HK (190 kt) T2HKK: Idea of 2 nd detector in Korea (~1000km) is under discussion. Physics Observation of CP violation Precise measurement of CP phase Discovery of proton decay Determination of mass hierarchy 17

x,y (m) Beta & Dispersion for 1-superperiod H & V 8-GeV booster ring RF CAVs 8-GeV BR x,y (m)

666 m Superperiodicity 4 Transition gamma ~15 GeV Collimator Aperture 126π.mm.mrad Physical Aperture 189 π.

18 x,y (m) Beta & Dispersion for 1-superperiod H & V 8-GeV booster ring RF CAVs 8-GeV BR x,y (m) INJ+COLL Injection energy 3 GeV Extraction energy 8 GeV Circumference m Superperiodicity 4 Transition gamma ~15 GeV Collimator Aperture 126π.mm.mrad Physical Aperture 189 π.mm.mrad RF CAVs Phase inj.(3gev) & extr.(8gev) (x,x ) (y,y ) s (m) 3GeV Qy > GeV >54 ~0.06% 3Qy=34 4Qy=45 4Qy=49 3Qy=37 Qx Qy=35 2Qx Qy=47 Qx-Qy=1(2Qx-2Qy=-2) Qx- Qy=-10 Qx Tune footprint in 3 GeV calculated for the 1-MW-eq beam from the RCS RCS : 1.4 MW MR > 2.2 MW RCS : 2 MW MR > 3.2 MW

Proton driver in KEKB Tunnel The 9-GeV proton linac using ILC cavity and cryomodule

9 GeV in 3 rd and 4 th straight. 3.3 + 2.9 x 2 = 9.0 GeV 6.2 GeV Three 1.

9000 MeV x 0.1 A x 1 % = 9 MW Three 1.3 GHz rebunchers To Kamioka 9 GeV 3.

19 Proton driver in KEKB Tunnel The 9-GeV proton linac using ILC cavity and cryomodule - Outline of acceleration : 1.2 GeV in 1 st straight. 3.3 GeV in 2 nd straight GeV in 3 rd and 4 th straight x 2 = 9.0 GeV 6.2 GeV Three 1.3 GHz rebunchers - Peak current : 100 ma (pulse) - Beam duty : 1 % - Beam power : 9000 MeV x 0.1 A x 1 % = 9 MW Three 1.3 GHz rebunchers To Kamioka 9 GeV 3.3 GeV R&Ds : High duty horn, high gradient SC cavity, high power targetry... Three 650 MHz rebunchers 1.2 GeV

line and g 2/EDM LHC and ATLAS Super Computer RNB Separate priori,

20 KEK Project Implementation Plan (PIP) Project to be priori, zed: COMET II PARC upgrade for Hyper Kamiokande Hadron Hall Extension H line and g 2/EDM LHC and ATLAS Super Computer RNB Separate priori, za, on Light Source J PARC upgrade for Hyper K is the highest priority in PIP.

21 Master Plan 2017 of Japan Science Council Master Plan 2017 issued on February 4, 2017, selected 28 important projects from 166 proposals. Two J-PARC related proposals are selected as the important projects: - Elucidation of the origin of matter with an upgrade of the J-PARC experimental facility (Extension of hadron hall, g-2/edm and COMET phase II) - Nucleon Decay and Neutrino Oscillation Experiment with a Large Advanced Detector (Hyper-Kamiokande) One J-PARC related proposals is not selected : - MLF the 2 nd target station for neutron and muon Hyper-Kamiokande is also selected as one of important large-scale projects in MEXT road map 2017.

22 Welcome to J-PARC! Physics with neutrino beams is one of the most active and important fields in particle physics for next two decades. Success of experiment requires MW-class proton beam power High reliability of facility, in particular targetry. Have a good workshop, and enjoy discussion for improving the performance of existing facilities and for the future projects of high power beam facilities.

STATUS OF THE J-PARC FACILITY

STATUS OF THE J-PARC FACILITY Shoji Nagamiya, J-PARC Center, 2-4 Shirakata Shirane, Tokai-Mura, Ibaraki 319-1195, Japan Abstract J-PARC (Japan Proton Accelerator Research Complex) consists of three accelerators