High Energy Physics in Japan J-PARC Super KEKB R&D for ILC - PowerPoint PPT Presentation

High Energy Physics in Japan J-PARC Super KEKB R&D for ILC Fermilab User ’ s Meeting, June 2-3, 2010 Koichiro Nishikawa IPNS, KEK 1

Japan Proton Accelerator Research Complex : J-PARC + Collider e - /e + Collider e - /e Kamioka B- -Factory Factory B Tokai Tsukuba ILC-Test Facility Tokyo Narita Photon-Factory 2

3 Particle Physics at J-PARC

J-PARC Slow Extracted Materials and Life Science Beam Facility Hadron Beam Facility Experimental Facility Nuclear Transmutation 500 m Neutrino to Kamiokande 3 GeV Synchrotron MR Synchrotron Linac (25 Hz, 1MW) (0.75 MW) (350m) J-PARC = Japan Proton Accelerator Research Complex 4 Joint Project between KEK and JAEA

Program Advisory Committee for Particle and Nuclear Physics 5

6 Accelerator status

Fast extraction beam in April Beam loading in kicker - to be replaced, -Also for 8 bunches op. Delivered # of protons : 1.1 × 10 19 (Jan.~Apr.) Before summer shutdown : 2~3 x 10 19 7

Accelerator status T.Koseki Apr.22 Fast extraction (FX) operation for neutrino of the main ring Increase shielding of 3-50BT (beam transport from 3GeV-RCS to MR) 8 8

AN EXPECTED BEAM POWER CURVES AN EXPECTED BEAM POWER CURVES ★ 1.7MW FOR RCS AND MR FAST BEAM EXTRACTION FOR RCS AND MR FAST BEAM EXTRACTION P MR (8-bunch@30GeV) = 1.6 x P RCS / MR CYCLE ( ): Beam transfer ratio from RSC to MR RCS POWER FOR MR BEAM POWER [MW] ★ 0.72MW BEAM POWER [MW] MR CYCLE [sec] MR CYCLE [sec] 6sec (2.7%) 3.52sec 3.2sec (4.5%) MR POWER AT 30GeV (5.0%) 2.47 (6.5%) 2.23sec (7.2%) (maximum cycle with existing power supply) 1.0sec (16%) 2008 2009 2010 2011 2012 2013 2014 2015 H20 H21 H22 H23 H24 H25 H26 H27 9 9 JFY H.Kobayashi (Deputy director of J-PARC center), Presentation at Workshop on Applications of High Intensity Proton Accelerators, Oct.19-21, 2009, FNAL

10 10 T2K experiment

Tokai-to-Kamioka (T2K) long baseline neutrino oscillation experiment Now Running! 振動確率＠  m 2 =3x10 -3 eV 2 • Goal Discover  →  e app. –  disapp. meas.    x  OA0 ° – OA2 ° • Intense narrow spectrum  beam OA2.5 ° – Off-axis w/ 2~2.5deg OA3 ° – Tuned at osci. max. • Near detector 11 1600   CC/yr/22.5kt • Super Kamiokande 11 11

Beam direction & intensity stability イオンチェンバ MUMON Very stable well within our physics requirements. 12 12

Neutrino profile measurements@280m • Bunch structure clearly seen • Event rate is stable • Beam direction is within 1mrad ND280 13 13

Observed SK event sample before the end of March Now more events 14 14

Started physics data taking! ~68kW ~31kW ~18kW Delivered # of protons : 1.1 × 10 19 (Jan.~Apr.) Keep running till June and restart in Nov. hopefully >100 kW for 7-8 months before June 2011 Search  e appearnce well below CHOOZ limit 15 15

16 16 Expected sensitivity

17 Slow extraction

&Radioactivity by beam loss 18 Slow Extraction

+1.8GeV/c SKS K  Slow extracted beam facility π  − 1.8GeV/c π − K − p K1.8 K 0L →π + π - π 0 KL K1.1BR K1.8BR Oct. 2010 T1 target 30GeV proton beam 19

Search for CP violation sources in KL above the second order weak interaction • 2009: beamline construction ⇒ beam survey (KL flux) • 2010: CsI calorimeter construction ⇒ engineering run beam properties with calorimeter Beam test at Tohoku U. with electron beam Integration of calorimeter components: CsI crystal, PMT, PMT holding structure, CW base, HV circuit, 125MHz FADC, cables, ... • 2011: detector installation ⇒ full engineering run, start physics run goal of goal of KOTO exp. KOTO exp. Grossman-Nir limit (== Step1) (== Step1) 10% intensity(30kW) one month 20

R&D for future Muon experiments R/D g-2,  e conversion 21

COMET (  e conversion search@J-PARC ) • Beam Extinction Study Super-conducting solenoid • – Abort line measurement – Pion capture solenoid • Single bunch, single shot • B=5T operation of MR • Radiation transparent ~ 10 -7 level has been • Technology measured – Detector Solenoid Tech. – Secondary beam line measurement • Measure secondary particle time – NbTi+Al conductor structure relative to a reference signal – Indirect pipe cooling from the MR – Conductor development •Bunched slow extraction to be done – Test coil construction and test • Extinction monitoring device • AC-dipole development development Gating PMT developed (10 -6 level) – • Collaboration with FNAL • 1 st version corona-tested • 2 nd version built 22

Muon g g- -2/EDM proposal at 3GeV RCS facility 2/EDM proposal at 3GeV RCS facility Muon • Proposal submitted to J-PARC PAC – Many homework! R&D – Muonium production – Ionization by high power laser – Acceleration while keeping small emittance to allow expt at non-magic momentum – Precision magnet 23

24 Future neutrino program

Beyond T2K • Lepton Sector CP Violation – Search for CP violation in Neutrino Oscillation Process • Comparison with Reactor data Neutrino & anti-neutrino comparison （  cross section ) •  1 st and 2 nd oscillation maximum comparison (wide E  ） • Proton Decay p →  K – p → e  0 – SK has accumulated about 200kton ・ year and continuing – Required 1. Higher beam power 2. New detector concept, new way of looking for the phenomena 25

Beyond T2K Beyond T2K Quest for the Origin of Matter Dominated Universe Quest for the Origin of Matter Dominated Universe Ｔ２Ｋ Discover Neutrino  e app. ( ２００９ ~) Anti-Neutrino meas. CPV search Intensity Upgrade Proton decay Tech. Large det. Detector R&D Choice Construction 26

AN EXPECTED BEAM POWER CURVES for FX AN EXPECTED BEAM POWER CURVES for FX Rapid cycling PS (>1Hz) RF technology, power supply (>1Hz) RF technology, power supply Rapid cycling PS Multi MW MR CYCLE TIME [sec] MR CYCLE TIME [sec] ★ 0.72MW RCS POWER FOR MR BEAM POWER [MW] BEAM POWER [MW] Linac energy upgrade energy upgrade Linac 6sec (2.7%) 3.52sec 3.2sec (4.5%) MR POWER AT 30GeV (5.0%) 2.47 (6.5%) 2.23sec (7.2%) 1.0sec (16%) 2008 2009 2010 2011 2012 2013 2014 2015 27 ( ): Beam transfer fraction JFY now now from RSC to MR

A Scenario ν e Spectrum sin 2 2 θ 13 =0.03,Normal Hierarchy • Cover 1 st and 2 nd Maximum δ =0 ° δ =90 ° • Neutrino Run Only 5Years × 1.66MW • 100kt Liq. Ar TPC Good e/   discrimination Good multi-track measurement → Reconstruction of wide energy range δ =180 ° δ =270 ° CP Measurement Potential Beam ν e Okinoshima  Background 658km 0.8deg. almost On-axis Wide band NP08, arXiv:0804.2111 28

29 Super KEKB

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New collaboration ‘Belle-2’ has been formed Intense negotiation with MEXT now 33

R&D for ILC Projects at KEK site by international collaborators 34

R&D activities for ILC in Japan  Cavity and cryo-module development at STF  ATF2: Final focus test facility  Design Study of the ILC conventional facility in mountain regions 35

SCRF Technology Required Parameter Value C.M. Energy 500 GeV 2x10 34 cm -2 s -1 Peak luminosity Beam Rep. rate 5 Hz Pulse time duration 1 ms Average beam current 9 mA (in pulse) Av. field gradient 31.5 MV/m # 9-cell cavity 14,560 RDR SB09 # cryomodule 1,680 # RF units 560 36

G loba l Pla n for SCRF R&D Year 07 2008 2009 2010 2011 2012 TDP-1 TDP-2 Phase Cavity Gradient in v. test  Yield 90%  Yield 50% to reach 35 MV/m Global effort for string assembly and test Cavity-string to reach 31.5 (DESY, FNAL, INFN, KEK) MV/m, with one-cryomodule FLASH (DESY) , NML (FNAL) System Test with beam STF2 (KEK, test start in 2013 ) acceleration Production Technology R&D Preparation for Industrialization 37

ILC-type (1.3 GHz) Cavity Venders and Laboratories in 2010 Venders Laboratories Europe RI/ACCEL* DESY, CEA/Saclay, INFN, (CI) Zanon* Americas AES* FNAL/ANL, JLab, Cornell, Niowave/Roark (TRIUMF, LANL) PAVAC Asia MHI KEK, (Hitachi) IHEP, PKU, (Tsinghua-U), (Toshiba) RRCAT/IUAC (in coop. w/ FNAL, KEK) * Established venders in the yield statistics (as of March, 2010) Multiple venders per region being realized 38

S1- -Global; Global; S1 A symbolic project of the A symbolic project of the world- -wide collaboration wide collaboration world 39

40 ( ATF :Accelerator Test Facility)

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42 Beam size measurement with Shintake-monitor

Design Study of the ILC conventional facility in mountain regions 43