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

6G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

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

7G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

The CMS Pre-shower Motivation

0

Signal Background

Preshower (20cm)

-15°C

TRAC

KER

lead Silicondetectors

8G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

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

10G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

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.

11G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

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

13G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

CMS Demokritos Physics - II

14G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

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.

15G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

Waiting for a new discovery…

16G. Daskalakis “INP activities at CMS/CERN” NuPECC Meeting – Athens 8.10.10

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