LHC Peter Jacobs 06/08/20091 LHC What is ALICE? Status of LHC ALICE readiness for beam ALICE EMCal project

2The QGP comes of age Large Hadron Collider at CERN ALICE ATLAS CMS

Size: 16 x 26 meters Weight: 10,000 tons Technologies:18 Tracking:7 PID:6 Calo.:5 Trigger, N ch :11 3P. Kuijer ALICE is the marriage of STAR and PHENIX → the comprehensive heavy ion experiment at the LHC

ALICE Collaboration ~ 1000 Members (63% from CERN MS) ~30 Countries ~100 Institutes ~ 150 MCHF capital cost (+ ‘free’ magnet) A brief history of ALICE : Design : R&D : Construction : Installation > : Commissioning 4P. Kuijer US: 13 institutions, ~35 physicists LBNL ORNL LLNL Yale University Wayne State University ….

ALICE vs ATLAS/CMS LHC5 Requirements for heavy ion physics: goal is to measure large-scale collective phenomena: reconstruct complex hadronic events precise measurements of heavy flavor, photons, leptons energy scale 100 MeV – 100 GeV → robust tracking → low material budget → multiple detector technologies for particle ID Requirements for Higgs/SUSY searches: missing energy signatures: hermetic coverage energy scale 10 GeV – 1 TeV tiny cross sections: high rate and rejection capabilities ALICE favors robust tracking, precision, and low mass over large acceptance, high rate, and huge dynamic range

LHC Status LHC6 Slides from talk by J. Mans, University of Minnesota CIPANP San Diego May ‘09

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LHC10 The Incident of September 19, 2008

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LHC Status CERN Director-General, February LHC13 The CERN Management today confirmed the restart schedule for the Large Hadron Collider resulting from the recommendations from the Chamonix workshop. The new schedule foresees first beams in the LHC at the end of September this year, with collisions following in late October. A short technical stop has also been foreseen over the Christmas period. The LHC will then run through to autumn next year, ensuring that the experiments have adequate data to carry out their first new physics analyses and have results to announce in The new schedule also permits the possible collisions of lead ions in 2010.

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Expected running conditions at ALICE LHC GeV collisions First high E collisions Pilot run Expected duration~ shifts~ weeks~ months N P211 (  2)24 (100 ns spacing) bunch P **m10 3 transverse bunch sizeµm luminositycm -2 s MB rates interaction rate per bc pile-up rate TeV p+p

ALICE Commissioning Status LHC16

TRD SDD + SPD TOF ACO and TPC Cosmics in various subsystems Muon spectrometer TPC and TRD triggered by TRD L1 17P. Kuijer

First interactions 11 th September Circulating beam 2: stray particle causing an interaction in the ITS ITS tracks on reconstructed tracks, common vertex 18P. Kuijer

transverse momentum resolution, B=0.5 T resolution at 10 GeV First round alignment: measured 6.0% (design 4.5%) particle identification via dE/dx Resolution first round cal.: measured 5.7% (design 5.5%) TPC running continuously May- October M events (Cosmic, krypton, laser) recorded. Initial calibration, ExB and alignment performance approaching design values 19 P. Kuijer Alice preliminary TPC Calibration

ALICE EMCal LHC20

The ALICE EMCal LHC21 Lead-Scintillator sampling calorimeter |  |<0.7,  ~110 o Shashlik geometry, APD photo-sensor ~13k towers (  x  ~0.014x0.014) Very late start relative to LHC schedule Full DOE funding (CD2/3) Feb ’08; TPC $13.5M International project: US, France, Italy TDR approved by LHCC Feb ‘09

US EMCal Project Management LHC22 Office of Nuclear Physics J. Simon-Gillo, (Acquisition Executive) H. Marsiske (ALICE-EMCal program Manager) Berkeley Site Office A. Richards (Manager) B. Savnik (Project Director) ALICE-EMCal Project Management T.M. Cormier, LBNL/WSU (Contractor Project Manager) J. Rasson, LBNL (Deputy, Contractor Project Manager) P.Jacobs, LBNL (Deputy, Contractor Project Manager) ALICE Management Board J. Schukraft, CERN EMCal Quality Assurance Q. Li WSU Project Controls D. Peterson, LBNL EH&S L. Wahl (LBNL) ALICE-USA Collaboration Coordinator John Harris, Yale Integrated Project Team Mechanical Integration and Design M. Dialinas, Nantes Production V. Petrov, WSU Electronics T. Awes, ORNL Trigger Jacobs, LBNL ALICE Installation L. Leistam, CERN Host Laboratory T.J. Symons, LBNL (Director Nuclear Science Division) DOE Contracting Officer M. Robles LBNL is Host Laboratory

Support frame insertion: Nov ‘07 LHC23

Energy resolution from electron test beam LHC24 Utilized the final module design and electronics readout chain → design resolution achieved Similar performance achieved for production SuperModule (tested with cosmics) design is sound mass production procedures have been verified

EMCal Supermodule LHC25 Jan ‘09: US-SM1 cosmic ray calibration at Wayne State University Mar ‘09: US-SM1 final checkout at CERN prior to installation

US SM1: Installation in ALICE LHC26 J. Rasson LBNL Engineering T. Cormier WSU/LBNL

EMCal Project Status May ‘09 LHC27 US SM1 installed in ALICE March EU SM1 installed in ALICE March checkout, integration into DAQ and trigger in progress US SM2 at CERN and ready for installation late June ‘09 EU SM2 at CERN and ready for installation early-July ’09 (with US help) ALICE installation window closes late July (moving target) → 4 EMCal SMs will see first LHC collisions Project completion: CD4 during FY11 Q1 (2 nd LHC shutdown) → EMCal complete for first high luminosity heavy ion run (…?)

LBNL Group LHC28 NSD: Jacobs Odyniec Ploskon Porter Selur Symons New hire New hire: Career-track Staff Scientist in residence at CERN currently interviewing candidates Engineering: Rasson Peterson LBNL responsibilities: Project management Mechanical engineering oversight Trigger Software and computing (PDSF) Physics leadership