SPANISH CONTRIBUTIONS TO LHC EXPERIMENTS

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SPANISH CONTRIBUTIONS TO LHC EXPERIMENTS

• 1. ATLAS
• IFAE - Barcelona
• IFIC Valencia (with CNM Barcelona)
• U. Autónoma Madrid
• 2. CMS
• CIEMAT Madrid
• IFCA Santander and U. Oviedo
• U. Autónoma Madrid
• 3. Spanish computing for LHC
• Tier 1
• Tier 2
• LHCb U. Barcelona, U. Santiago (see P. Perrets
  talk)
• Will not review physics preparation work

IN2P3 FPA meeting, Madrid 12 Jan. 2009

M. Cavalli-Sforza
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1. ATLAS

• IFIC-Valencia (with CNM Barcelona)
• SemiConductor Tracker Microstrip modules for
  Endcaps
• U.A. Madrid
• One Liquid Argon Calorimeter EM Endcap
• IFIC Valencia
• Tile Calorimeter mechanics, PMTs ReadOut
  Drivers
• IFAE Barcelona
• Tile Calorimeter mechanics, optical assy,
  calibration systems
• TDAQ Evt Filter software , Tau trigger
• Collaboration with LPC-Clermont on Tile
  Calorimeter (both IFAE and IFIC groups) and with
  CPPM-Marseille of UAM group on Endcaps

IN2P3 FPA meeting, Madrid 12 Jan. 2009

M. Cavalli-Sforza
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SCT detector construction at IFIC

• Main contributions to SCT construction
• QA of 900 silicon wafers
• Assembly and full QA of 282 modules (14 of
  end-cap modules)
• Yield 93 (85 expected)

SCT assembly procedure
Silicon wafer QA test
Construction on the IFIC workshop of the two SCT
end-caps outer thermal enclosures
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Inner detector alignment

• ID Mixture of 3 technologies pixels, microstrips
  and transition radiation. (5832 silicon modules)
• High accuracy tracks are required for mass
  measurements (e.g. A W-mass measurement accuracy
  of 15-20 MeV/c2 requires 1?m alignment precision)
  
• Track base alignment necessary to reach required
  precision
• Global Chi2 method (IFIC-Oxford collaboration)
  global fit of alignment parameters using
  Chi2-minimization, all correction and constrains
  (multiple scattering, common vertex..) contained
  in a huge matrix (36K x 36K). Matrix inversion
  concerns speed, precision, memory size
• Weak modes are corrected by alignment of
  macro-structures (barresl, edn-caps, cylinders,
  wheel) and combining cosmic muons and
  interaction events data.

After alignment
Monitor to detect distortions (weak modes)
Before alignment
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U.A. Madrid FABRICATION OF LIQ. ARGON EM
ENDCAPS (WITH CPPM MARSEILLE)
Formation of accordeons
Baking at high T and p of formed accordeon sheets
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One Endcap octant
ONE FULL ENDCAP, CABLED, BEFORE INSERTION INTO
CRYOSTAT
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TileCal Mechanics in Valencia

• Construction of 32 TileCal Extended Barrel
  modules. (50 Tilecal EB). (1999-2001) (TOOLING
  FROM IFAE)
• Submodule weighs approximately 900 kg, and has
  dimensions of approximately 1.6 m by .4 m by .25
  m.
• Construction quality checks at IFIC (Valencia).
• Thickness measurements
• Gluing, inspection and cleanout
• Surface protection

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Photomultiplier tests at IFIC

• Test of 1500 PMs for TileCal.
• Study of TileCal requirements vs manufacturers
  specifications.
• Software development for PMs test machine.
• Ageing effect simulation
• Destructive test
• Linearity zone deviation
• Gain stability
• Drift effect studies for different manufacturers
• EMI
• PHILIPS
• HAMAMATSU
• CLOSE COLLABORATION WITH LPC - CLERMONT

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IFAE BARCELONA MECH. OPTICAL ASSY, TESTS
OF ONE FULL TILECAL EXT. BARREL (64 MODS)
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SURFACE ASSEMBLY OF 64 TILECAL EXT. BARREL
MODULES AT CERN
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(No Transcript)
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Event Filter Core Software Design and development
of Processing Task running in each core of
1800 Event Filter nodes Series of tests in Large
Scale Farms Commissioning of HLT/EF farm at
ATLAS P1 Hardware installation software
deployment Software now routinely used for
cosmics run, detector comissioning monitoring,
single beam

• High Level Trigger
• Trigger chains event selection algorithms
• Tau trigger
• Level 2 Tau calorimeter selection
• Tau trigger group convenership 2005/07
• Jet trigger
• HLT algorithm integration (co-convenership)
• Prepare, test validate online trigger menu
• HLT Online operation (coordination)

IFAE BARCELONATDAQ WORK EVT FILTER, HLT
Data Quality Monitoring Flagging data-quality run
by run Co-convenership
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2. CMS

• CIEMAT (Madrid)
• Barrel muon drift tube chambers
• Muon chamber readout electronics
• Muon chamber/Inner tracker alignment (with IFCA)
• IFCA (Cantabria) with U. Oviedo
• Muon chamber/Inner tracker alignment (with
  CIEMAT)
• Monitoring system for detector tolerances
• U.A. Madrid
• L1 Muon trigger

IN2P3 FPA meeting, Madrid 12 Jan. 2009

M. Cavalli-Sforza
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CIEMAT contribution to CMS detector
construction
Design and production of 70 chambers ( 25
of the total , 700 readout channels /chamber
) Aim to identify, trigger, and measure the
position (to 100 mm) and angle (to 1mrad) of
muon tracks with efficiencies better than 99

• Barrel Muon Drift Tube Chambers

Chamber Assembly Hall at CIEMAT
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CIEMAT Muon Chamber Readout Electronics
Design and fabrication of the muon chamber
readout system

• ROB (Readout Boards) located in the
  minicrates, to process the signals from the
  Front End contain TDCs (128 channels each board)
• ROS (Readout Server Board) to collect signals
  from Minicrates and to transmit them to DDU and
  DAQ system.

MINICRATE
ROB
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Installation at of muon chambers into CMS Barrel
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IFCA at CMS (Detector Instrumentation)
Optical alignment system Laser network acting as
internal reference of tracking detector.
Development of precise sensor devices, custom
made electronics and calibration procedures
At IFCA
Metrology lab for assembly sensor
characterization
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In CMS cavern
Carbon Fibre structures housing laser sources.
Photogram from the most internal part of CMS
Optical alignment Safety monitoring system for
critical detector tolerances Instrumentation of
detectors and structures, gt 200 distance
measurements (several technologies), for safe
opening / closing of CMS
Example of tight clearance between detectors
parts and beam-pipe when closing/opening the
detector
Illustration of the permanent and quasi elastic
motion of the CMS structures during powering
cycles of the 4T solenoid.
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UAM Responsibilities in CMS 2002-08

• Development of L1 Drift Tube Regional Muon
  Trigger Drift Tube Track Finder (DTTF).
• Infrastructure, Hardware, Online Software,
  Offline Software
• DTTF Performance Commissioning, operation and
  data analysis (2004-2008). In 2008,triggered 700M
  CMS cosmic events.

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3. SPAIN IN LHC GRID (WLCG)

• Tier 1 center
• PIC (Puerto de Información Científica)
• 50/50 consortium of CIEMAT and DIUE(Catalan
  Research Min.)
• Located at U. Autónoma Barcelona.
• 3 distributed Tier 2 centers
• ATLAS, CMS, LHCb
• Each composed of 2 or 3 grid-ified subcenters, at
  participating institutes.
• GENERAL REMARKS
• T1, T2s generously funded by National Particle
  Physics plan
• With proper timing
• Spanish LHC grid operational since Sept. 2007

IN2P3 FPA meeting, Madrid 12 Jan. 2009

M. Cavalli-Sforza
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TIER 1 CAPACITY
CPU

• The Tier-1 graduallly grew, in agreement with
  WLCG MoU. At end 2008, it reached about 1500
  ksi2k de CPU, 1 PB of disk capacity and 7TB of
  tape capacity (1 PB installed).

Disco
Cinta
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TIER 1 USE OF RESOURCES

• In February to May 2008 the CCRC08 exercise took
  place. All experiments simultaneously exercised
  their computing models, aiming for a realistic
  load on the computing infrastructure.
• Typical PIC mode for all three experiments
  nominal simulated data rate transfer with T0, and
  with other 9 T1s and more than 30 T2s.
• Goals fully reached for all experiments.
  Efficiencies of data transfer better than specs,
  and among best T1s.

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THE ATLAS TIER 2 (AN EXAMPLE)
TIER-2 Distribution of Computing Storage
Resources (as of January 2009)
Reliability of the Spanish ATLAS Tier-2
High redundancy among the 3 sites This allows to
provide robust service
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SUMMARY OF LHC SPAIN 1991 - PRESENT

• Human resources
• 160 physicists /computer scientists
• 60 (ATLAS) 60 (CMS) 20 (LHCb) 20 T1/T2
• About 1/3 are students
• Substantial growth since the 90s
• Of Spanish HEP community involved (was 100 in
  2000)
• of funding level

IN2P3 FPA meeting, Madrid 12 Jan. 2009

M. Cavalli-Sforza