Japanese Commitment to the LHC experiments

Katsuo Tokushuku (KEK)May 17, 2008

The KEK-CNRS/IN2P3-CEA/DSM/DAPNIA Collaboration Meeting at CRNS

TOTEM

Circumference : 27km1232 superconducting dipoles with magnetic field B=8.3 T

Two General purpose Detectors: ATLAS and CMS

pp collider √s=14TeVDesign L=1034cm-2s-1

(100fb-1/year) 1033 for the early stage

LHC (Large Hadron Collider)

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LHCf

ALICE

LHC Physics

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The aim of LHC experiments: 2 major questions :•Whether the standard model is correct? <- Higgs mechanism• Why the standard model works so well? <- structure of BSM

Mass reach: With L=1033

~1300 GeV in “one week” ~1800 GeV in “one month”

Higgs

SUSY

Or, Extra-D,Technicolor, Little Higgs,,,

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1984.3 ECFA-CERN Lausanne Workshop on LHC

1988(?) Recommendation by “Rubbia” Committee for future plan of CERN

1989 Construction of SSC started.

1990.10 ECFA LHC Workshop at Aachen

1992.10 Letter of Intents by ATLAS and CMS

1993.10 Termination of SSC Project

1994.12 Technical Proposals by ATLAS and CMS

1994.12 CERN Council approved LHC in 2 steps.

1995.5 Monbusho announced 1st contribution of 5 BYen (65 MCHF).

1996 India ($12.5M), Russia (67MCHF incl. detectors), Canada (v$ 30M)

1996.12 Monbusho announced 2nd contribution of 3.85 BYen (44 MCHF).

1996.12 CERN Council approved LHC in 1-step to complete LHC in 2005.

ATLAS and CMS proposals were approved.

1997.12 USA announced contribution of $200M (accelerator) + $331M(detectors).

1998.5 Monbusho announced 3rd contribution of 5 BYen (56 MCHF).

2000.11 LEP termination.

2002.6 Budget crisis -> LHC completion changed to year 2007.

2007.10 Council approved LHC startup scenario in summer 2008.

History of LHC Project

Large Japanese contribution!

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June 23, 1995 : Minister of Monbusho, Kaoru Yosano, announced a contribution of 50 Oku-yen to help finance the construction of the LHC at the CERN Council meeting.

Japan was elected a CERN Observer State.The 1st major step of the globalization of the LHC Project.

CERN Director General Chris Lewellyn Smith達磨（片目！）Delegation of Japan at CERN Council

Dhama dollMinister

Kaoru Yosano

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Near the interaction points, triplet quadrupole magnets focus the beam. Two types of superconducting magnets are separately developed and manufactured at KEK and Fermilab. Both magnets were assembled with common cryostat at Fermilab and then shipped to CERN.

Fermilab

KEK

Collision point

Inner Triplet Quadrupoles Full current achieved on 24/April/2008

Albany, Alberta, NIKHEF Amsterdam, Ankara, LAPP Annecy, Argonne NL, Arizona, UT Arlington, Athens, NTU Athens, Baku, IFAE Barcelona, Belgrade, Bergen, Berkeley LBL and UC, HU Berlin, Bern, Birmingham, Bogota, Bologna, Bonn, Boston, Brandeis, Bratislava/SAS Kosice, Brookhaven NL, Buenos Aires, Bucharest, Cambridge, Carleton, Casablanca/Rabat, CERN, Chinese Cluster, Chicago, Chile, Clermont-Ferrand, Columbia, NBI Copenhagen, Cosenza, AGH UST Cracow, IFJ PAN Cracow, DESY, Dortmund, TU Dresden, JINR Dubna, Duke, Frascati, Freiburg, Geneva, Genoa, Giessen, Glasgow, Göttingen, LPSC Grenoble, Technion Haifa, Hampton, Harvard, Heidelberg, Hiroshima, Hiroshima IT, Indiana, Innsbruck, Iowa SU, Irvine UC, Istanbul Bogazici, KEK, Kobe, Kyoto, Kyoto UE, Lancaster, UN La Plata, Lecce, Lisbon LIP, Liverpool, Ljubljana, QMW London, RHBNC London, UC London, Lund, UA Madrid, Mainz, Manchester, Mannheim, CPPM Marseille, Massachusetts, MIT, Melbourne, Michigan, Michigan SU, Milano, Minsk NAS, Minsk NCPHEP, Montreal, McGill Montreal, FIAN Moscow, ITEP Moscow, MEPhI Moscow, MSU Moscow, Munich LMU, MPI Munich, Nagasaki IAS, Nagoya, Naples, New Mexico, New York, Nijmegen, BINP Novosibirsk, Ohio SU, Okayama, Oklahoma, Oklahoma SU, Oregon, LAL Orsay, Osaka, Oslo, Oxford, Paris VI and VII, Pavia, Pennsylvania, Pisa, Pittsburgh, CAS Prague, CU Prague, TU Prague, IHEP Protvino, Regina, Ritsumeikan, UFRJ Rio de Janeiro, Rome I, Rome II, Rome III, Rutherford Appleton Laboratory, DAPNIA Saclay, Santa Cruz UC, Sheffield, Shinshu, Siegen, Simon Fraser Burnaby, SLAC, Southern Methodist Dallas, NPI Petersburg, Stockholm, KTH Stockholm, Stony Brook, Sydney, AS Taipei, Tbilisi, Tel Aviv, Thessaloniki, Tokyo ICEPP, Tokyo MU, Toronto, TRIUMF, Tsukuba, Tufts, Udine/ICTP, Uppsala, Urbana UI, Valencia, UBC Vancouver, Victoria, Washington, Weizmann Rehovot, FH Wiener Neustadt, Wisconsin, Wuppertal, Yale, Yerevan

ATLAS Collaboration(Status October 2007)

37 Countries 167 Institutions 2912 Scientific Authors total (<- number based on the first ATLAS paper in Dec 2007)

ATLAS-Japan 15 Institutes 92 Scientific authors

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ATLAS Detector: construction and commissioning

Length : ~ 46 m

Radius : ~ 12 m

Weight : ~ 7000 tons

~ 108 electronic channels

~ 3000 km of cables

• Tracking (||<2.5, B(solenoid)=2T) : -- Si pixels and strips -- Transition Radiation Detector (e/ separation)• Calorimetry (||<5) : -- EM : Pb-LAr -- HAD: Fe/scintillator (central), Cu/W-LAr (fwd)• Muon Spectrometer (||<2.7) : air-core toroids with muon chambers

Superconducting Central Solenoid (Japanese

contribution:100%)

Time-to-digital conversion chips for muon drift tubes

(100%)

End-cap muon triggering system (TGC) (~50%)

Silicon microstrip tracking system (SCT) (~20%)

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First working ATLAS component

Arrived at CERN （ 2001.9 ）

ATLAS Central Solenoid : 100% responsibility by KEK

A happy marriage with liquid Argon Calorimeter ! （ 2004.

2 ）

Full current test in situ （ 2006.8 ）

7730 A2.00 T

7980 A

9

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TGC: Thin Gap Chambers (TGC) for triggering

3600 TGC chambers320,000 channelsTotal area ~2,000 m2

Joint Constructionby

Israel, Japan China

High energy muons penetrate calorimeters and be bent by magnetic field of toroid. TGC system measures the bend angle for Level-1 triggering. Japanese group is also working on the LVL2 muon trigger, now. Muon offline : French group

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Thin Gap Chambers (TGC) for muon endcap triggering Japan made 1200 TGC chambers out of 3600. Almost all electronics are design and constructed by Japan.

Big wheel in the pit

KEK and Kobe

72 sectors assembled at CERN B180

transportation17/May/2008

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All Big-wheels were installed in ATLAS pit (2007.9)

Mass production of trigger electronics (KEK).ASICs and modules were designed by ATLAS-Japan

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ATLAS Silicon Micro-strip Detector (SCT) 　　　　　　　　　　　　

4 sensors/module

KEK assembled 980 modules (40%) Module mounting at Oxford U.

using robots made by KEK

Excellent noise distribution obtained during SR1 cosmic-ray test Cosmic-ray tracks at SR1 (May 2006)

Hamamatsu

Japan Mektron

SeikoPrecision

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WLCG Resource Pledged in 2007:

CPU: 1000kSI2k

Disk: 200TB

LCG Tier2 Center for ATLAS is operational since 2005 at International Center for Elementary Particle Physics (ICEPP), the University of Tokyo

Contribution for ComputingTOKYO-LCG2

SINET(New York - Tokyo)GEANT(Lyon – New York)CERN Tier0

IN2P3-CC Tier 1

ICEPP, Univ. Tokyo

Data Flow at ATLAS M6

ATLAS Detector

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File Transfer from Lyon to Tokyo at M6

10 minutes average of FTS

130MB/s!

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Physics preparation Growing contributions in ATLAS physics groups

Shoji Asai (Tokyo) : SUSY convenor (2005-2006) Osamu Jinnouchi (KEK) : Monte Carlo Coordinator (2007-) Soshi Tsuno (KEK) : Higgs VBF group coordinator

Higher weights on Higgs and SUSY physics. But start contributing to the other physics, such as B-physics and proton structure.

Dr. Junji Tojo (KEK) is collaborating with LAPP group (led by Isabelle Wingerter-Seez) on ATLAS e/gamma performance and H γγ under the CNRS/IN2P3 programme.

(Now Taka Kondo is at LAPP!)

SLHC: High luminosity Challenge

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10331033

10351035

1032 cm-2 s-1 1032 cm-2 s-1

10341034

CMSCMS

Peak luminosity: 10-15 1034 cm-2 s-1

: 400 inelastic collisions in a bunch (in 50ns bunch spacing mode) : we need new tracking system. (100~200MCHF project)

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R&Ds for LHC Upgrade

(1) Development of the Nb3Sn conductor for higher field quadrupole magnets for IR (by

A. Yamamoto, K. Tsuchiya in collab. with US, CERN).

(2) Collaboration on Crab cavitities (by K. Oide)

(3) New Rad-hard silicon microstrip sensor for ATLAS inner tracker (by Y. Unno ………).

(4) New muon chamber readout TDC chips (by Y. Arai) and TGC readout (by O. Sasaki).

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R&D for SLHC (SCT)

LHC(2x1014)→SLHC(1x1015

)4" FZ →6" FZ (or MCZ)Irradiations have found

very different Vdep evolution

4" FZ

6" FZ

Proton irradiations in Japan at CYRIC, Tohoku U.

SLHC module mock-up: module (centre), cooling plates (2 sides)

Strong participation in heavy-ion physics at RHIC since its LOI.

5-year Grant-in-Aid of ~3MCHF approved by MEXT for ALICE in 2006; PI=T. Sugitate (Hiroshima)

Present ALICE-Japan activities:Hiroshima University

PHOS construction and photon measurements with PHOSALICE-Tier2 center

University of Tokyo, CNSlepton measurements with TRD

University of Tsukubahadron and lepton measurementsin connection with a MEXT special program.

Another Japanese Commitment to LHCAnother Japanese Commitment to LHCThe ALICE Experiment30 countries, 97 institutions, ~1,015 members as of Jan.2007

PHOS

TRD

ALICE Tier-2 at Hiroshima; possible link to French GRID

“JP-HIROSHIMA-WLCG” with EGEE /gLite3.0 /ALICE-VOBOX in preparation

Network B/W: MPLS 1Gbps on SINET3 in Japan

Regional support given: ASGC in Taiwan

Responsible person: Prof. Toru Sugitate, Hiroshima sugitate@hiroshima-u.ac.jp

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Other items with CERN

(1) Sending KEK experts for LHC accelerator commissioning (K. Oide….).

(2) CERN-Japan Fellows: 2 fellows in ATLAS,

1 in Accerelator, 1 in Theory

(a new fellow under the selection process)

(3) Participation of young Japanese students in the CERN Summer School

since 2003.

5 students in this summer

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Summary The Japanese group has been taking major

roles in the ATLAS detector construction, for the components complementary to the French particiation (Solenoid, TGC, SCT, MDT front-end)

Physics contributions are growing. R&D studies for LHC upgrade have already

started. It is time to make a detailed plan.