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???LHC??

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Title: ???LHC??


1
  • ???LHC??
  • ???
  • ????????????
  • ?????? (??)
  • 2005. 6.28-29

2
????
  • 1. LHC?????
  • LHC????
  • (ATLAS,CMS,LHCb,ALICE)
  • 3. ????LHC??????????????
  • 4. ???

3
???????LHC???????
  • 1993?10???????????????SSC,
    1994??????CERN????????LHC????????????????????,????
    ?????????
  • ????SSC?????????,?????????????????????,?LHC
    ????????18??????????????,??,?????????????????????
    ?????????????

4
???????(LHC)??????
  • ?CERN???LHC??????????????,???2007???

  • LHC ??????

???????? 2007?
?????? p-p Pb-Pb
??????(TeV) 7.0 2.76(TeV/u)
??
?? 0.1 0.1
????(cm) 7.5 7.5
????(mm)
????(hr) 10 6.7
????(s) 1200
????(GeV) 450.0 177.4/u
???????
??(km) 26.659
5
LHC
  • ?s 14 TeV (7 times
    higher than Tevatron/Fermilab)
  • ? search for new massive particles up to m
    5 TeV
  • Ldesign 1034 cm-2 s-1
    (gt102 higher than Tevatron/Fermilab)
  • ? search for rare processes with small s (N
    Ls )

pp
ATLAS and CMS pp, general purpose
27 km ring used for ee- LEP machine in 1989-2000
ALICE heavy ions
Start Summer 2007
LHCb pp, B-physics
6
? very powerful detectors needed
7
LHC
LHC??-?????????
8
LHC??????????ATLAS?????
ATLAS Collaboration
34 Countries 151 Institutions 1770 Scientific
Authors
Longstanding partnership with Chinese teams since
the beginning (RD started in 1990)
Albany, Alberta, NIKHEF Amsterdam, Ankara, LAPP
Annecy, Argonne NL, Arizona, UT Arlington,
Athens, NTU Athens, Baku, IFAE Barcelona,
Belgrade, Bergen, Berkeley LBL and UC, Bern,
Birmingham, Bonn, Boston, Brandeis,
Bratislava/SAS Kosice, Brookhaven NL, Bucharest,
Cambridge, Carleton, Casablanca/Rabat, CERN,
Chinese Cluster, Chicago, Clermont-Ferrand,
Columbia, NBI Copenhagen, Cosenza, INP Cracow,
FPNT Cracow, Dortmund, JINR Dubna, Duke,
Frascati, Freiburg, Geneva, Genoa, Glasgow, LPSC
Grenoble, Technion Haifa, Hampton, Harvard,
Heidelberg, Hiroshima, Hiroshima IT, Indiana,
Innsbruck, Iowa SU, Irvine UC, Istanbul Bogazici,
KEK, Kobe, Kyoto, Kyoto UE, Lancaster, 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,
FIAN Moscow, ITEP Moscow, MEPhI Moscow, MSU
Moscow, Munich LMU, MPI Munich, Nagasaki IAS,
Naples, Naruto UE, New Mexico, Nijmegen, BINP
Novosibirsk, Ohio SU, Okayama, Oklahoma, LAL
Orsay, Oslo, Oxford, Paris VI and VII, Pavia,
Pennsylvania, Pisa, Pittsburgh, CAS Prague, CU
Prague, TU Prague, IHEP Protvino, Ritsumeikan,
UFRJ Rio de Janeiro, Rochester, Rome I, Rome II,
Rome III, Rutherford Appleton Laboratory, DAPNIA
Saclay, Santa Cruz UC, Sheffield, Shinshu,
Siegen, Simon Fraser Burnaby, Southern Methodist
Dallas, NPI Petersburg, Stockholm, KTH Stockholm,
Stony Brook, Sydney, AS Taipei, Tbilisi, Tel
Aviv, Thessaloniki, Tokyo ICEPP, Tokyo MU, Tokyo
UAT, Toronto, TRIUMF, Tsukuba, Tufts, Udine,
Uppsala, Urbana UI, Valencia, UBC Vancouver,
Victoria, Washington, Weizmann Rehovot,
Wisconsin, Wuppertal, Yale, Yerevan
9
Physics at LHC
  • Common Questions
  • generation of mass
  • elementary particles gt Higgs gt Atlas/CMS
  • composite particles gt QGP gt Alice
  • confinement
  • missing symmetries
  • SuperSymmetry matter ltgt forces gt Atlas/CMS
  • ChiralSymmetry matter ltgt vacuum gt Alice
  • QCD mass generation via broken chiral
    symmetry
  • (mu,d ¹ 0)
  • CP Symmetry matter ltgt antimatter gt LHCb
    Different Approaches

10
ATLAS/CMS????
???????115 lt mH lt 1000 GeV????????Higgs
??? ????TeV????????????(????,q/? compositeness,
leptoquarks, W/Z, heavy q/?,
Extra-dimensions, .) ???? -- W ??
-- top??, ??????? -- Higgs ??, ??, ??
(??Higgs???????) -- B-physics (??LHCb??)
CP ??, ????, B0 ?? -- QCD ????? as
-- etc. . ????????????????????????????(??
ALICE???) ????????????????????10-5 s
??????? Etc. etc. .. ???????LHC???????????

11
LHCb ????
-- B-?? (complementing LHCb) CP violation, rare
decays, B0 oscillations ????????,???CP??,????
CKM(Cabbibo-Kobayashi-Maskawa)?????????CKM?????3??
????1?????,?????????1??????????,??????????????????
?????????????????CP??????????????CP????????????-??
????????   ???????????????????(QCD)?????
??,???-??? ???????????-??????????1975????????????,
???????????????????????????????200MeV??,??????????
???????????????,???????????????????-??????????????
??????????????????????????_??????10-5 ?????????
???????
ALICE ????
12
1?????????
13
?ATLAS/CMS????,Which physics the first year(s) ?
Already in first year, large statistics
expected from -- known SM processes ?
understand detector and physics at ?s 14 TeV
-- several New Physics scenarios
14
Search for the Higgs boson ????
15
???????????
This particle (neutralino) is a good
candidate for the universe dark matter
Neutralino mass can be measured to 10 ? SUSY
discovery and neutralino mass measurement at LHC
can solve problem of universe cold dark matter
16
???????LHC??????
  • ATLAS ? CMS
  • 1999?4??11?,????????????CERN????????CMS?
    ATLAS??????????,????????LHC?????
  • ????????????????????????Chinese
    Cluster????ATLAS????
  • ??CMS????????????????????????CMS????????
  • ???ATLAS?CMS??????????????????????????????
  • LHCb
  • 2002?10?,?????CERN ?????LHCb???????????,
    ????????????????????????

17
  • ????ATLAS????????????
  • ???ATLAS?????????????(????????????????????
    )?????,?????????????????????1999?9?,????CERN??????
    ??????ATLAS??????????????
  • ??????????
  • ????2001???
  • ????? ???????????(??MDT)BEE?(32?)?????????????,??
  • (1) ??????????????330?????,????????????????8,000
    ?????(??????)?
  • (2)40??TGC ????ASD??,????????(?????)?
  • (3)?? TGC???????????(??????)?
  • ???????????????????,???ATLAS????????

18
  • ????2001???
  • ????????,????????????????TGC?(??????????)?
  • ???????????????????
  • ??32?BEE??16?BIS.8 ?MDT???(??????)
  • ??400?TGC?(?????????,????????????????)?
  • ??,?ATLAS???????,????????????????????(4,400
    ???)??(???????)?

19
Muon Spectrometer Instrumentation
Precision chambers - MDTs in the barrel and
end-caps - CSCs at large rapidity for the
innermost end-cap stations Trigger chambers -
RPCs in the barrel - TGCs in the end-caps
The Muon Spectrometer is instrumented with
precision chambers and fast trigger chambers A
crucial component to reach the required accuracy
is the sophisticated alignment measurement and
monitoring system
20
???(ATLAS??)?????
??????????????(MDT)???BEE?BIS.8??????,?48??(??7000
?MDT???????????/????(QA/QC)???????2005????????????
??
BEE??????????????,???????????????????(1.6??
?2.0)?????????????????,BEE????????????,???????????
????????
????
2002?9? ?????????????
2003?11? ??Module0???QC??

2004?3? ??MDT??????
2005?12?
??BEE?BIS8?????
?????5.500?MDT?,28?MDT?, ????17?MDT?
21
????MDT?
??????????????????,????ATLAS??????????????????
???1200??,?370,000????,?7????14????????
  • ????
  • ????? 50?m
  • ???? 80 ?m
  • ???????? 10 ?m r.m.s
  • ??????? 20 ?m r.m.s
  • ??LHC????
  • ??????????,?????,
  • ??????
  • ? ??????
  • ???? Ar/CO2 (93/7)
  • ?? 3 bar
  • ?? 2?104
  • ???? 3080V
  • ?????? 700ns

????
? ??????????????? ? ?????????(3 bar)? ?
?????????????? ? ????????(MDT)?
22
The IHEP ATLAS MDT clean room
23
????(ATLAS)????? (??TGC????????????)
400 TGCs (L1????)
?????? 400 TGC??????ATLAS???????????????
??ATLAS ???????????????µ??????????????????????????
????????
400TGC????????????
24
????
?????????0.2mm
???????????0.5Mohm1.5Mohm??
??????1?A
25
??ATLAS??TGC???????????
  • ATLAS-MUON ????Giora Mikenberg???2004?12?22????
    ???ATLAS?????TGC????????????????(???)?
  • ?????196?TGC???,??? ????????????????????
    ??????????????????????,??????????????
  • ??????????????????????????????1(????????5
    )????ATLAS?????????,???KEK(???????)??????Weizmann
    ???,.????????,????????????
  • ATLAS???Peter Jenni ?????????????

26
??CMS??????????????
?????CSC? ??? ??????RPC???
ME1/3 ME1/2
Conclusion
IHEP Task 72 ME1/2 72 ME1/3 CSC Assembly
Testing For CMS Endcap Muon System
27
  • CMS??????
  • 1.?? MDC ??? (IHEP), 2003???.
  • 2. ?? Muon? CSC??? (IHEP)
  • 150CSC ? (????Cathode Strip
    Chamber),????????CERN
  • ??????(Mechanical parts)
  • CMS ?????? (IHEP),2000???
  • ??Muon ???IB1IB4 (IHEP), 2004??
  • ???? (IHEP), 2004??
  • 4. ??????Muon RPC? (Beijing University)
  • 5. ??CMS ??? 2.5 ?-?/?

28
??? CMS/CSC FAST Site
Long term HV training 3.6KV 2weeks, 3.7KV 2
weeks 3.8KV one month.
29
CSC FAST ????
Muon
24 scintillators read out at both
ends VME/NIM DAQ system
Scintillation hodoscope
CSC chamber
30
????(CMS??)RPC
  • ?? ???? 1/3 ???RPC(RB1)? 1/4 ?? (RPCRE1/2-3)
  • station Quantity Area Total area bare
    chamber Grand total
  • RB1 120 5.2m2 624 m2
    480 1248 m2
  • RE1/2-3 144 2.0 m2 290 m2 432
    580 m2
  • ???CMS????????,??RHIC-PHENIX?????????????RPC
    (??????),?????????????????????????.
  • ???????RPC????????????,??RPC??????,???????
    ? ????????????????

31
????LHCb????????
  • ??????LHCb ?????
  • Tell1 (GBEOTR),
  • ?????????????
  • ? CERN, Lausanne, NIKHEF,
  • Heidelberg ???????????

32
GBE card on TELL1
  • Collaboration with CERN
  • Design/Test/production

One of the versions of GBE designed by Tsinghua
members
33
GBE V5
  • GBE Version 5. One pre-series of 20 boards had
    been produced at Tsinghua University in 2005.
  • 400 GBE cards in total will be produced and
    tested at Tsinghua University in 2005.

34
ORC card on TELL1
  • Collaboration with Heidelberg
  • 400 ORC board will be produced and tested in
    Beijing in 2006

35
?????????????LHC??
Visit of Professor Chen Jiaer to the ATLAS
experiment pit on 4th April 2002
Visit of Deputy Minister Liu Yanhua to the ATLAS
pit on 17th February 2004
36
?????????????
  • ????LHC?????????????????????????
  • ??ATLAS?CMS?LHCb?3?LHC??????????????????????????,?
    ???????????????????????????
  • ???????????????????
  • ????????
  • ?????????
  • ??????

37
??????
??????
Find the Needle in a Haystack
9 ???????
HIGGS??
????????? ???
38
LHC????
LHC????
12-14 PetaBytes/? LHC??????????????CPU
100 Million SPECint2000 ????????????
39
LCGThe LHC Computing Grid Project
  • ????
  • LHC??
  • Grid ?????????
  • ??
  • ??????
  • ??Tier????
  • ????Intel CPU
  • ????Linux????
  • ??
  • ???????LHC??????????

40
Why Tier-1 Essential for LHC
  • A Tier-1 is essential for the Chinese physicists
    involved in LHC experiments.China contributed a
    lot on building LHC detectors. Physicists need a
    tool to access and analyze LHC data.
  • ?? Gloriad ?-?-?-?-? 10Gb/s
  • No computing, no physics!

41
Tier-1 in the world
Tier-1 center ALICE ATLAS CMS LHCb
ASCC (??) X X
CNAF (???) X X X X
PIC (???) X X X
CC-IN2P3 (??) X X X X
GridKA (??) X X X X
RAL (??) X X X X
BNL (??) X
FNAL (??) X
TRIUMF (???) X
NIKHEF/SARA(??) X X X
NORDIC DATA GRID FACILITY(??) X X
Tier1-??LHC??????????
42
??????
  • ATLAS?????
  • ???
  • ???CPPM??,?????????,????????????????,IHE
    P ATLAS ????????????????????
  • ?ttH??????????????ttH?????????,??????????????
    ??ATLAS????9.0.3,???ATLFAST,????????????Higgs?????
    ?
  • ??????????????Top???????????
  • ???????????????D0????????????????????R-parity
    ??em ????sneutrino
  • ????????????,???? ????14 senior physicists and
    6-7 Phd. Students???????

43
ATLAS software releases at IHEP (ATHENA,LCG)
  • 01-02/2005
  • installed ATHENA 9.0.3 at IHEP lcg002, run
    successfully ATLAS ttH generation and fast
    simulation jobs
  • 03-04/2005
  • installed ATHENA 9.0.4 and 10.0.1 at IHEP
    lcg002, and 9.0.4 at IHEP lcg003. Both of
    releases KitValidation checks are OK. run
    successfully ATLAS ttH full simulation jobs

ttH Full simulation at IHEP LCG003 from Dr.
LU)
44
??????(?)
  • ??CMS???
  • ???????????Higgs?????????
  • ?Bc ? high-pt J/? ??????,???????????
  • ????,????????????????????????
  • ???????????
  • ????????????????????

45
HVV anomalous coupling
  • H Higgs VV ZZ or WW, qqVV final states
  • Goal To study the HVV coupling property, to
    verify
  • the Higgs observed belongs to SM or
    not

46
??????(?)
  • ??LHCb?
  • ???????? Bc? ?b, ????CP ?????????.
  • ???LHC????????,?????????????????LHCb????

47
???
  • ??????3?LHC???????????????????,?????????????????
  • LHC?????????????????????????????????????,?????????
    ???????
  • ?LHC????????????????(Grid)??????LHC???????????

48
???(?)
  • ??????? LHC????????????????????,???????????
  • ??????????,?????????????????????????NSFC,MOST,CAS
    ? MOE ?????
  • ??!
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