The 31 st Meeting of the CERN-Russia Committee Participation of Russian Institutions in the LHC Experiments 21 November 2009, Geneva Victor Savrin LHC

The 31st Meeting of the CERN-Russia Committee

Participation of Russian Institutions Participation of Russian Institutions in the LHC Experimentsin the LHC Experiments

21 November 2009, Geneva Victor Savrin

LHCin

RUSSIA

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ATLASATLAS21 November 2009, Geneva Victor Savrin

LHCin

RUSSIAThe 31st Meeting of the CERN-Russia Committee

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Inner detector

TRT commissioning and ATLAS runs: (MEPhI, PNPI, SINP MSU, LPI) The major effort was dedicated to commission the entire TRT as a complete part of the ATLAS detector and prepare for stable operation with the beam.14 combined and semi combined runs have been done during this year before start of the continues ATLAS operation.

Gas system:From Sept 25th TRT operates with the CO

2 cooling system in a standard

mode. A technique of the gas gain stabilization across the detector finalized and used as the standard operation mode of the TRT.


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• BNPI Monitoring of temperature inside of LAr calorimeters. In July 2009 the codes for temperature monitoring was finally tested and implemented in ATLAS DCS. • ITEP Monitoring of FCal readout and HV channels: - no dead channels, only two channels with high noise, time alignment better than 2 ns Analysis of FCal testbeam data: - shower profiles: agreement with MC, performance well within requirements• LPI Study of LVPS failures• IHEP Beam tests of LAr calorimeters


CalorimetersLAr

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CalorimetersTileCal

Combined runs: Taken in April, May-June, Jul-August, September including TileCal + L1Calo + LAr + TRT + Muon system• Cs scan : every 2 weeks. PMT voltage adjustments to keep gain to the level established with test beamTest of optic fibers & scintillators.• Test modules at bld 175 Fully operational LB and EB wedge. Digitizer test-bench. LVPS and ROD labs. Cs scan system. HV monitoring. Cooling. Muon scope.• TileCal software

Response of LB65 (in B.175) to the Cs source.


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Muon detectorsEEL/EES chambers: 62 pcs

Number of tubes: ~ 16’128 pcs

All EE chambers were equipped with electronics, certified and CR tested. Few results below: ASD noise allowed– 40kHz single tube, less 3 tubes with more than 20 kHz in singe chip; dp/dt – cut 10 mbar/day


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Muon detectors EE Installation

IHEP should finish preparation of remaining 52 chambers before installation

10 chambers were installed

52 → installation at shutdown 2010

Sector 15 CSector 13 C


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Muon detectorsCommissioning


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• ITEP Validation of Tower and Top jet algorithms Jet tagging and veto in VBF Higgs production

• BNPI Search for heavy LRSM neutrino in electron-muon-dijet final state

• PNPI e/ performance Search for the “best” jet algorithm for Top

• IHEP Underlying events and MPT in events with Z bosons Deviations from DY due to unparticle exchange and ED

• SINP MSU Rare B-decays B±→J/ΨK± Bs→μμ Validation of Fast ATLAS Monte Carlo Simulation Measurement of charm and beauty production using lepton trigger and D-meson reconstruction Associated W and charm production

• MEPhI Search for heavy metastable quarks Search for AC leptons (τ’++ , τ’--) Y and J/ψ in HI

Physics analysis

21 November 2009, Geneva Victor Savrin21 November 2009, Geneva Victor Savrin

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The prototypes of the real time ATLAS remote monitoring system are operational at Dubna and Protvino

The prototypes of the real time ATLAS remote monitoring system are operational at Dubna and Protvino

MOTIVATION

Monitoring of the detector and data flows at any time

Participation of the subsystem experts in the shifts and data quality checks remotely

Training the shifters before they come to CERN

Teaching

OutreachControl Room at CERN

at JINR

at IHEP

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CMSCMS


LHCin

RUSSIA


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On Saturday 7 November protons went halfway around the LHC before being dumped as planned into a collimator, producing so-called "splash events" of muons which were recorded by CMS.Previous to this, the October Exercise by the Physics Object and Physics Anaysis Groups, with CMS Computing, readied the CMS Tier2 system for the first LHC collisions.


New Splash!

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ECAL EE Installation

Highly complex and delicate installation: done in 2 weeks against the 6 weeks initially planned


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ME4/2 and Castor Installation

CASTOR: 223/224 ch working Exposed to test beam before installation – results being analyzed


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CMS ready for data taking


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Cosmic Runs At Four Tesla (CRAFT, Oct-Nov 2008 and Aug 2009):

Continuous Global Cosmic Runs with CMS at operating B field (3.8T)


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24 papers with CRAFT resultssent to publication in Journal for Instrumentation

1. Performance of the CMS Pixel detector with cosmic ray data, CFT-09-0012. The CMS Silicon Strip Tracker Operation and Performance With Cosmic Rays in 3.8 T Magnetic Field, CFT-09-002 3. Alignment of the CMS Tracker with CRAFT data, CFT-09-0034. Performance and Operation of the CMS Crystal Electromagnetic Calorimeter, CFT-09-0045. Measurement of the muon stopping power in PbWO, CFT-09-0056. Time reconstruction and performance of Crystal ECAL, CFT-09-0067. From Detector to Analysis: CMS Data Processing Workflows During an Extended Cosmic Ray Run, CFT-09-007 8. The CMS CRAFT Exercise, CFT-09-0089. Performance of CMS Hadron Calorimeter Using Cosmic Muons and the Proton Beam From the LHC, CFT-09-00910. Measurements of RPC performance in CMS with cosmic rays, CFT-09-01011. Summary of the performance of the CSC's from CRAFT Data, CFT-09-011 12. Results On Local Muon Reconstruction in DT Chambers From Analysis of Cosmic Muon Data, CFT-09-012 13. L1 Trigger Performance, CFT-09-013 14. Muon Reconstruction Performance, CFT-09-01415. Magnetic Field Studies, CFT-09-01516. Muon Track-based alignment, CFT-09-01617. Muon hardware-based alignment, CFT-09-01718. HCAL Timing, CFT-09-018 19. Anomalous signals in HCAL, CFT-09-01920. Performance of the High Level Trigger, CFT-09-02021. Characterization of Beam Halo Data, CFT-09-02122. DT Local Trigger Performance, CFT-09-02223. DT Calibration, CFT-09-02324. Fine Synchronization of the muon Drift-Tubes local trigger, CFT-09-025

24 papers with CRAFT resultssent to publication in Journal for Instrumentation

1. Performance of the CMS Pixel detector with cosmic ray data, CFT-09-0012. The CMS Silicon Strip Tracker Operation and Performance With Cosmic Rays in 3.8 T Magnetic Field, CFT-09-002 3. Alignment of the CMS Tracker with CRAFT data, CFT-09-0034. Performance and Operation of the CMS Crystal Electromagnetic Calorimeter, CFT-09-0045. Measurement of the muon stopping power in PbWO, CFT-09-0056. Time reconstruction and performance of Crystal ECAL, CFT-09-0067. From Detector to Analysis: CMS Data Processing Workflows During an Extended Cosmic Ray Run, CFT-09-007 8. The CMS CRAFT Exercise, CFT-09-0089. Performance of CMS Hadron Calorimeter Using Cosmic Muons and the Proton Beam From the LHC, CFT-09-00910. Measurements of RPC performance in CMS with cosmic rays, CFT-09-01011. Summary of the performance of the CSC's from CRAFT Data, CFT-09-011 12. Results On Local Muon Reconstruction in DT Chambers From Analysis of Cosmic Muon Data, CFT-09-012 13. L1 Trigger Performance, CFT-09-013 14. Muon Reconstruction Performance, CFT-09-01415. Magnetic Field Studies, CFT-09-01516. Muon Track-based alignment, CFT-09-01617. Muon hardware-based alignment, CFT-09-01718. HCAL Timing, CFT-09-018 19. Anomalous signals in HCAL, CFT-09-01920. Performance of the High Level Trigger, CFT-09-02021. Characterization of Beam Halo Data, CFT-09-02122. DT Local Trigger Performance, CFT-09-02223. DT Calibration, CFT-09-02324. Fine Synchronization of the muon Drift-Tubes local trigger, CFT-09-025


In total, 178 authors from RDMSout of 2432

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RDMS contributed significantly into POG and DPG:

- HF, НЕ, EE, CSC calibration, HF and HE+EE+ES test beams, DQM, overall detector performance with both Monte-Carlo and Cosmic Test data- core software development- development, optimization and validation of algorithms and event processing software:

• to reconstruct and to analyze muons, jets, electrons, MET etc, high-mass objects (di-muons, di-jets), decay chains

• to study reconstruction efficiency of physics objects from data, trigger performance, misalignment effect

RDMS contributed significantly into POG and DPG:

- HF, НЕ, EE, CSC calibration, HF and HE+EE+ES test beams, DQM, overall detector performance with both Monte-Carlo and Cosmic Test data- core software development- development, optimization and validation of algorithms and event processing software:

• to reconstruct and to analyze muons, jets, electrons, MET etc, high-mass objects (di-muons, di-jets), decay chains

• to study reconstruction efficiency of physics objects from data, trigger performance, misalignment effect

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RDMS CMS Selected Physics TasksForward Physics

•Study of 2 jet production in hard single diffraction IHEP, SINP MSU, Erevan•Study of 2 jet production in central diffraction IHEP, ITEP, SINP, Erevan

Higgs•Search for Higgs bosons in decays into 2 photons, 4 leptons, 2 leptonsand 2 jets, 2 leptons and 2 neutrinos JINR, ITEP, MSU, Kharkov

QCD•Measurement of the gamma+jet cross-sections JINR, ITEP, SINP•Measurements of jet inclusive cross-section JINR•Search for BFKL effects at jet production PNPI, ITEP•Study of jet shapes ITEP, SINP•Study of jet fragmentation SINP MSU

EWKMeasurement of DY muon pair production JINR, Minsk, GomelMeasurement of forward-backward asymmetry JINR in muon pair productionMeasurement of triple boson couplings MinskBose-Einstein correlations of gauge bosons (WW, ZZ) JINR

Forward Physics •Study of 2 jet production in hard single diffraction IHEP, SINP MSU, Erevan•Study of 2 jet production in central diffraction IHEP, ITEP, SINP, Erevan

Higgs•Search for Higgs bosons in decays into 2 photons, 4 leptons, 2 leptonsand 2 jets, 2 leptons and 2 neutrinos JINR, ITEP, MSU, Kharkov

QCD•Measurement of the gamma+jet cross-sections JINR, ITEP, SINP•Measurements of jet inclusive cross-section JINR•Search for BFKL effects at jet production PNPI, ITEP•Study of jet shapes ITEP, SINP•Study of jet fragmentation SINP MSU

EWKMeasurement of DY muon pair production JINR, Minsk, GomelMeasurement of forward-backward asymmetry JINR in muon pair productionMeasurement of triple boson couplings MinskBose-Einstein correlations of gauge bosons (WW, ZZ) JINR


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RDMS CMS Selected Physics Tasks

Top physics•Observing the t-channel single top production IHEP, SINP

SUSY•Search for sleptons and lepton flavor number violation INR

Exotics •Search for heavy neutrino and WR INR•Search for new resonances (extra dimensions and Z’) in DY JINR•Search for non-resonant di-muon signals from ADD JINR

and compositeness Heavy Ion

•QGP hard probes (heavy quarkonia and jets) SINP MSU and soft probes (eliptic flow)

Top physics•Observing the t-channel single top production IHEP, SINP

SUSY•Search for sleptons and lepton flavor number violation INR

Exotics •Search for heavy neutrino and WR INR•Search for new resonances (extra dimensions and Z’) in DY JINR•Search for non-resonant di-muon signals from ADD JINR

and compositeness Heavy Ion

•QGP hard probes (heavy quarkonia and jets) SINP MSU and soft probes (eliptic flow)


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Example: JINR Remote Operation Centre

Monitoring of detector systemsData Monitoring / Express AnalysisShift Operations (except for run control)Communications of JINR shifter with personal at CMS Control Room (SX5) and CMS Meyrin centreCommunications between JINR experts and CMS shifters Coordination of data processing and data management Training and Information

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ALICEALICE

LHCin

RUSSIAThe 31st Meeting of the CERN-Russia Committee


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Photon spectrometer (PHOS)KI, Sarov, IHEP, JINR, Bergen, Oslo, Hiroshima, Wuhan, Warsaw, Prague

• February – July, 2009 3 new air – tight casings produced and tested (design and production started in 2008)

• March – August, 2009 3 PHOS modules assembled in the new casings and tested in the lab

• July 2, 2009 one PHOS module installed• August 13 – 14, 2009 two more PHOS modules

installed Current PHOS status Commissioning of the PHOS is ongoing Slow cooldown started in end September currently at about 0oC ( final operation temperature 25oC) humidity is stable and far below dew point


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Photon Spectrometer (PHOS)

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PHOS installation (August, 14)


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The first heavy ion beam going through ALICE was registered by PHOS on 23 October

17 events have been registered:5-6 particles (muons) go through PHOS in the beam direction, i.e. transversely to crystals, synchronizing with the ion beam in ALICE and releasing the energy of 20-50 MeV per crystal.

One of the events

Some samples of events in the PHOS detector channels


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PHOS in cosmic run

HLT event display shows a large shower with some its fraction in PHOS. Analysis is in progress.

Examples of cosmic events in PHOS:

Spectrum of cell energies in cosmic run


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Trigger detector T0MEPhI, INR, KI, Jyvaskyla

July, 2009 T0&TRD test. Verification of proper operation of the interface between the

T0 detector and the pre-trigger system for TRD The new type of the amplifier approved and installed

July 11 – 12, 2009 Participation in the injection test

Sensitivity of the T0 detector to the injection particles was demonstrated

The T0 detector operated as a trigger The calibration with the laser was confirmed to be correct,

though, as expected, the amplitude resolution with the injection particles was slightly worse as compared to that with the laser.


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Dimuon spectrometerPNPI

• Commissioning of the muon tracking chambers Many sources of electronics noise identified and fixed Fixing of poor connections and gas leak is underway • Cosmic run Stable and efficient data taking More than 400000 events are

recorded in various configurations of the magnetic fields

Commissioning of the muon tracking chambers An example of event triggered with MTR


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Detector TOFITEP

• Cosmic run TOF – one of the main trigger detectors for cosmic run. Very stable trigger rate (back-to-back quasi vertical tracks) Preliminary time resolution 200 ps for “self-triggering” mode

21 November 2009, Geneva Victor Savrin21 November 2009, Geneva Victor Savrin

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Physics

Physics of direct photons, neutral mesons, and jets with the PHOS spectrometer.

RRC “Kurchatov Institute”, IHEP, JINR, Sarov Feasibility of measurement of short-lived resonances. PNPI , ITEP, JINR Study of long range correlations for pp and AA collisions in the

framework of String Fusion Model. St.PSU Multiplicity measurement with T0INR Femtoscopy (HBT correlations)RRC “Kurchatov Institute”, IHEP, JINR

RRC “KI”, JINR, IHEP, ITEP, INR, StPGU, PNPI, MEPhI, Sarov

Development of soft-ware for data analysis, MC study of feasibility of measurements of various signals with the ALICE detector.


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LHCbLHCb


LHCin

RUSSIA


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Calorimeters:

ECAL development, installation, commissioning

HCAL development, installation, commissioning IHEP / ITEP / INR / BINP

PS/SPD development, installation, commissioning

Muon installation, commissioning: chambers + PNPI/MSU VELO HV system commissioning MSU

Common efforts of the groups from various Russian institutions

Currently, all groups are deeply involved in the preparation for the data taking and physics analysis


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CALO System

• ECAL channels are aligned in time within 3 ns

• The intermodule calibration of the ECAL PMTs better than 10% at the start-up• final calibration to be done with RD

• HCAL – time aligned to 3 nsThe HCAL calibration system with 137Cs source is used regularly to monitor gain calibration

• PRS/SPD – time aligned to 3-4 ns

• General status – READY for data taking

PMTs are performing very well show the expected stability


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MUON system

MWPCs

• M1 station installation has been completed by June 7th and closing procedure has been successfully tested

• M1 has been included in the global LHCb DAQ system

• M2-M5 completely debugged. As of mid June no missing readout channels were observed

• M2-M5 are now closed and aligned

M1 station


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HV systemAll chambers have been set to 2.65 kV (working point)

The HV control system has been upgraded and reviewed

Ready to be configured for data taking

A software package for recalibration of voltage sensors of PNPI HV-system has been implemented

Replacing of 1 G resistorsin voltage sensors


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Upgrade activities (CALO)• Modification for the Calorimeter Electronics: fast electronics (40 MHz)

• Modification for the Inner part of the ECAL: Inner region replaced by a more radiation tolerant medium

PWO crystals?


“Shashlyk” technology

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Upgrade activities (VELO)?

Upgrading the VELO to 40 MHz implies complete replacement of all modules and FE electronics

Two major challenges

• data rate of 1300 Gbit/s• radiation levels and hence thermal management of modules

Important to maintain current performanceby keeping material low


pixelstrip

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Physics analysis

• ITEP, MSU – radiative penguin decays B → K* γ , γ

• BINP – determination of the CKM angle γ using Dalitz plot analysis of B → D K decays

• IHEP - determination of the CKM angle using B → , B →

• ITEP, MSU – electroweak penguin decays B →

ITEP – search for FCNC decay D →

• PNPI, IHEP – search for rare decay →


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LHCb detector READY for Physics

•The installation of LHCb is fully completed, including M1 station• All detector elements are commissioned and ready for data taking•Strategy for trigger and physics analysis of 2010 Run is prepared• LHCb is fully operational for Physics Run in 2010


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Summary of Main Activities in 2009 Commissioning, testing and calibration with

cosmic rays and radioactive sources

Analysis of events from the first beam splashes in

various subsystems

Preparation to the first LHC beam collisions

Furbishing and upgrade of the detector

subsystems

Development of the computing tools for data

taking and analysis

Event simulation and reconstruction for principal

processes to be observed at LHC collisions

including new physics21 November 2009, Geneva Victor Savrin

Documents

The 31 st Meeting of the CERN-Russia Committee Participation of Russian Institutions in the LHC Experiments 21 November 2009, Geneva Victor Savrin LHC