title Tohru Takahashi Hiroshima Univ. - PowerPoint PPT Presentation

title Tohru Takahashi り よ 」 Hiroshima Univ. ン ト ー ュ ニ 「 誌 雑 学 科 2007/02/0 ８ KEK Topical Conference

The International Linear Collider 1 0 0 0 0 LHC TEVATRON Maximum Energy 1 0 0 0 ILC SPPS LEP 1 0 0 ISR SLC PETRA （ SLAC TRISTAN GeV ) PEP KEK PS 1 0 BEVATRON SPEAR DORIS Electron Synchrotron (Tokyo) 1 1 9 5 0 1 9 6 0 1 9 7 0 1 9 8 0 1 9 9 0 2 0 0 0 2 0 1 0 2 0 2 0 Year

What I am going to talk • Many review prospect was already given in this conference – particle physics and Cosmology – neutrino physics : Status and Prospect – B physics; Status and Prospect – Physics with LHC + ILC – Prospects of LHC • Start this year, expect physics results ~ 2010 The International Linear Collider ~ Experiments will start ~10 years from now~ • International – synonym of complex organization/procedure Messages to encourage young physicists Remark: ACFALC/GDE meeting Feb4-7, ICFA press conf. Feb.8

The Standard Model × × (3) (2) (1) SU SU U C L Y (1) U EM Matter Field Gauge Fields leptons Z W ± g γ ν ν ν well describes µ e τ µ e τ phenomena A Scalar Field up to quarks u t c ~100GeV scale:i.e., h (yet to be discovered) − 18 s � ~10 d b m 10 -10 s after Big Bang + Right handed

Cosmological observation We know nothing about 96% of our universe

Hints for next step SLC/LEP/TEVATRON SM Higgs may K, just above current B, neutrino reach Scalar Yukawa Gauge Colliders Extensions of SM which predict(expect): something new in TeV scale Explore TeV region Supersymmetry Extradimenstions

A way to go TeV scale Direct access is possible by current technologies of accelerators and detectors not by single machine

It is likely ,,,, ~ <2010 (Higgs) SM Higgs MSSM Higgs

ILC vs LHC pp Collision hadrons p g t - H bb g p hadrons e+e- Collision μ ＋ μ - Ｚ e - Z e - + H bb a day for 5 σ discovery

ILC is the precision machine ECFA/DESY WG δ M ~ 40 (0.03%) MeV GLC GLC

At the time KEK TC5 (2001) TESLA Concept TESLA Concept GLC/NLC Concept GLC/NLC Concept •no show stopper for both technologies ,,,,,, but,,,, •too expensive to try both to move to the next step (being ready to construct a machine) Normal Conducting Super Conducting X(C) band 65MeV/m L band 25MeV/m

SCRF Technology for the ILC which? SC The recommendation by International Technology Recommendation Panel (ITRP) August 2004 Will Construct one International Linear Collider by Superconducting RF

Superconducting RF L band(1.3GHz RF) Standindg EM field electron/posititon 115.4mm 1274mm higher efficiency for RF->beam Superconducting RF lower acc. gradient

Schematic of the ILC Pol e- source e+ source main linac 31km(for 500GeV) Dumping Ring •200GeV – 500 GeV Beam Delivery System •500fb -1 in 4 years and Interaction Region •Pe- > 80% •upgradeable to 1 TeV

e+ source Undulater based (Basic design) e+ target e+ 150GeV e- 100GeV e- Compon based (Optional) 1.3GeV e- e+ target Optical Cavities Pol e+ pol γ by laser-Compton

~11km/beam Main Linac ~800/beam 12m 1m ~7000/beam

Getting High luminosity ∝ PB ∝￥ / ＄ / ¢ f rep n 2 e L= 4 πσ x σ y We need ultra-low emittance beam 5 nano m influenza virus 5nm at IP 100 nm

How we are doing International Council of ICSU Scientific Unions International Union of IUPAP Pure and Applied Physics International Committee for Informal information ICFA Future Accelerators exchange with founding agencies International Linear ILCSC Collider Steering Committee GDE Global Design Effort (Aug 2005) Barish Asia Europe America Bangalore Mar 2006 Nozaki Foster Dugan Vancouver Jul 2006 Valencia Nov 2006 many many many Beijing Feb 4-7 2007 labs. labs. labs. univs. univs. univs. until yesterday

A snapshot

Many Institutes over the world TESLA Test Facility - DESY ●： I n s t i t u t e s , L a b s

100 of quad 、 68 of sect. ATF at KEK align within tens of µ m: low emittance beam for the ILC ATF2 (2007-) has been achieved Testing Final Focus stabilization, nm cotrole

Acc. gradient w/ SCRF 2 a G ≈ + Relative Cost $ lin b cryo G Q 0 STF at KEK 35MeV/m 45MeV/m pushing higher Gradient MV/m C. Adolphsen (SLAC)

ILC Detector R&D Worldwide Study on Physics and Detector for Linear Collider (WWS) J. Brau (US ） F. Richard (EU) Co-Chair H. Yamamoto (Asia ） ACC. Organizing Committee GDE ..... MDI R&D DCR SiD LDC GLD panels R&D group

Detector R&D Three (+ 4 th recently) GLD （ Asia ） SiD （ US ） LDC （ EU ） 4th

R&D matrix

Barish LCWS06 Internationl Linear Collider Timeline 2005 2006 2007 2008 2009 2010 Global Design Effort Project Baseline configuration Reference Design Engineering Design Draft of RD reported at Beijing: open to public soon ILC R&D Program ~First major milestone by International collaboration~ Expression of Interest to Host International Mgmt Engineering Design to bring the ILC ready for construction

Summary ‘80 ‘90 2000 2010 2020 LEP/SLC Tevatron ILC SPPS LHC Tristan COBE WMAP ν we are on the right track B but, major players ~late 2010s will be,,