“Demokritos” Participation in CMS at CERN
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1G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10
“Demokritos” Participation in CMS at CERN
INP Activities at
CMS/CERN experiment
2G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10
“Demokritos” Participation in CMS at CERN
ATLASATLAS
CMSCMS
CERN
GVACircular Tunnel 27 km in circumference.Buried around 50 to 175 m underground. 5000 superconducting magnets
3G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10
“Demokritos” Participation in CMS at CERN
4G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10
NCSR ‘Demokritos’, Institute of Nuclear Physics, CMS members & associates
The INPD-CMS Collaboration
ACTIVITIES during the life cycle of the CMS EXPERIMENTDETECTOR CONSTRUCTION
Trigger/DAQPre-shower detectorTest-Beams Physics Studies (MC)Software development (Physics Tools)
StaffM. Barone, G. Daskalakis, T. Geralis, A. Kyriakis, D. Loukas, A. Markou, Ch. Markou.
Technical SupportC. Filippidis,I. Papadakis.
Post-doct.S. Kesisoglou
Ph.D. Students I. Manolakos, Ch. Mavrommatis, E. Ntomari, E. Petrakou.
RUNNIG PHASE
Data taking (shifts)
PHYSICS ANALYSIS
EWK Physics SM Higgs & alternative modelsMSSM Higgs SearchesSUSY Searches
GRID ComputingGRID ComputingClusterCluster
5G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10
The CMS Trigger and DAQ
1) Read Out Units (Rus)Constructed and tested in collaboration
with Greek Industry, 22 RU units (IOPs) Validated the feasibility of the Trigger and DAQ System
IOP card with on board CPU, 3 PCI buses Altera FPGA
2) Global Trigger Processor Emulator – GTPe: 10 Full systems delivered to CMS. Designed, Built, mounted and tested at INP. FPGA 400kGates (Mixed firmware VHDL and Handel-C) developed at INP
Capabilities: Random Triggers up to 4 MHz (nominal 100kHz), Event Packaging, Communication to Event Manager, Accept backpressure signals from detectors and DAQ partitions
CMS Trigger and Data Acquisition System: LHC collisions at 40MHz, Level1 Trigger at 100kHz High Level Trigger at 100 Hz
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The CMS Trigger and DAQ
Full GTPe System – Test bench at INP A GTPe System in the CMS preseries tests
10 Full GTPe Systems delivered to CMS (5 in 2005-2007 and 5 new ones in 2010
“The Global Trigger Processor Emulator for the CMS experiment” has been published in IEEE Trans.Nucl.Sci.52:1679-1684,2005
1 GTPe in Central CMS DAQ5 GTPe in CMS preseries2 GTPe in Development lab2 GTPe spare
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The CMS Pre-shower Motivation
0
Signal Background
Preshower (20cm)
-15°C
TRAC
KER
lead Silicondetectors
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Greek Contributions to the CMS Pre-shower
• The CMS Preshower Detector • 15 years of development & Construction• 4288 micromodules in 8 Dees• 600 micromodules made by I.N.P.• Close collaboration with Greek Industry
4500 hybrids assembled by PRISMA
9G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10
Greek Contributions to the CMS Pre-shower
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INP Computer Cluster – CMS GRID
INP Cluster currently has ~ 100 CPUs
~ 25 Tbytes storage space
Has been a Tier-3 site in the CMS Grid
infrastructure until last year.
Since the beginning of 2010, it operates as a
local cluster, with all the CMS software fully
operational – and serves the local users of the Institute.
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LHC Principal Goal : Explore a new energy/distance scaleLHC Principal Goal : Explore a new energy/distance scale
Extra Dimensions
SUSY partners Dark matter
Tiny Black Holesq-g plasma
SM(t,b,QCD,E/W)
… !!! UNEXPECTED!!!
My life as a
boson
12G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10
CMS Demokritos Physics - ITest-Beam & Physics Tools development:
ECAL test-beam data analysis.
Development of π0 rejection algorithms for converted and unconverted photons.
ECAL Dead Channel recovery algorithms.
Physics Analyses at simulation level
FCNC decays of Top quarks,
SUSY search at LM4,
MSSM Higgs searches,
Little Higgs searches.
Physics Analyses on first CMS/LHC data :
Cross section measurement of W and Z in the electron channel (results shown in ICHEP)
Measurement of Zγ (ISR) production and TGC measurement
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CMS Demokritos Physics - II
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Summary - Outlook
• The CMS Group of Demokritos has made marked contributions to the construction of CMS in the areas of the Pre-shower detector & Trigger/DAQ as well as in the preparation of the software & Physics.
• Effort is currently shifting to physics exploitation of the CMS detector by analysing the first 3 pb-1 of data already delivered by the LHC. Most probably we ‘ll have 30 pb-1 by the end of 2010.
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Waiting for a new discovery…
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4T μ+n
π+
e-
γ
Silicon MicrostripsPixels
TRACKER
ECALScintillating PbWO4 crystals
HCALPlastic scintillator/brasssandwich
2T
SUPERCONDUCTINGCOIL
IRON YOKE
MUON CHAMBERSDrift Tube ChambersResistive Plate Chambers Cathode Strip Chambers