21 Mar 2007ALICE - Paul Dauncey1 ALICE CR07: Installation and Commissioning Paul Dauncey Material from: L. Leistam: “ALICE Status” W. Riegler: “Commissioning and Installation” K. Safarik: “Strategy for Data-Taking, Alignment and Calibration”

21 Mar 2007ALICE - Paul Dauncey2 Installation: Recent Progress Major milestones recently achieved SSD and SDD mounted on ITS frame ITS frame lowered into pit and inserted into TPC Be beam pipe passed through and connected to absorber Current status Beampipe now in bake-out Bake-out period shortened From 26 to 17 days Assumes no leaks will be found

21 Mar 2007ALICE - Paul Dauncey3 Integration: Constraints W. Riegler NOW

21 Mar 2007ALICE - Paul Dauncey4 Installation in series means every detector is on the critical path Every delay counts against the overall ready date Delays have built up over the last year TPC was taken into pit in Mar 2006 Ready for ITS on 1 Feb; at CR06 this was 1 Oct ITS was actually installed on 15 Mar ITS delay due to SDD tests; cannot be fixed once installed Roughly 5 months delay since CR06, 1 month since Jan LHCC “Luckily”, LHC schedule delayed by 4 months since CR06 Rest of delay compensated by breaking strict ordering for A-side forward detectors Very little contingency left for planned detector Would need to move to nights and/or weekends Or not install some components Installation: Comments

21 Mar 2007ALICE - Paul Dauncey5 V0, T0: Apr FMD3: Apr Installation: C-side Forward Detectors All thee detectors are ready for installation Procedure tested in full in 2005; confident of this step

21 Mar 2007ALICE - Paul Dauncey6 SPD: 27 Apr – 2 May Connections: 3-9 May Installation: SPD, connection to ITS Most difficult part; pixel detector needs to be on time

21 Mar 2007ALICE - Paul Dauncey7 FMD2: 8-11 May Services: 14 May – 7 Jun TPC movement: 8-13 Jun Beampipe: Jun Installation: Services, FMD, beampipe

21 Mar 2007ALICE - Paul Dauncey8 PHOS, one module: Jun EMCAL support: 26 Jun – 2 Jul Installation: PHOS, EMCAL

21 Mar 2007ALICE - Paul Dauncey9 TOF, TRD modules 3-30 Jul Installation: TOF, TRD Adds extra modules to existing installation Realistically is contingency End date won’t change even if start date is later

21 Mar 2007ALICE - Paul Dauncey10 Miniframe: 31 Jul - 5 Sep Installation: Miniframe Schedule Review in Sep recommended bringing this forward At the expense of installation of other detectors This recommendation was not taken up Critical milestone: carries services for almost all A-sides No installed detectors can read out on A-side until miniframe is in place LHC vacuum closes after installation; no time to fix anything

21 Mar 2007ALICE - Paul Dauncey11 V0, T0, FMD, PMD: 6-25 Sep Shielding: 26 Sep – 9 Oct Installation: A-side Forward Det, Shielding A-side forward detectors pushed after beampipe closure to make schedule; no apparent downside

21 Mar 2007ALICE - Paul Dauncey12 Critical: A-sides won’t connect until Sep Not all services in place yet… …although scheduled to be by the time the relevant detectors arrive

21 Mar 2007ALICE - Paul Dauncey13 L. Leistam

21 Mar 2007ALICE - Paul Dauncey14 L. Leistam

21 Mar 2007ALICE - Paul Dauncey15 Services and power supplies Services are not complete CAEN power supplies are a “real concern”; still no real progress Space in the pit Space is extremely tight for people working on the installation of detectors and services Miniframe Effectively a huge patch panel Planned by subdetectors semi-independently; no overall plan shown Commissioning: Issues

21 Mar 2007ALICE - Paul Dauncey16 K. Safarik Estimates 20k events for this

21 Mar 2007ALICE - Paul Dauncey17 Cosmics is an essential step before beam data Only way to be sure all timing, event building, etc, is right Otherwise, Nov beam will be used for commissioning, not calibration and alignment Current plan is mainly parasitic running until Oct 10 Installation continuing Installed detectors run as-and-when ready After this, full detector cosmics running can occur 4 weeks scheduled, roughly half without magnet on, half with magnet on Alignment requires ~20k cosmic events in SPD Rate is ~ 1/min; requires ~14 days Completely fills allotted time No spare time for actual commissioning of whole detector readout Commissioning: Cosmics

21 Mar 2007ALICE - Paul Dauncey18 Installation: Very significant progress Whole schedule at risk from delays from all remaining detectors Accurate up-to-date knowledge of the LHC schedule is essential Coordination across subdetectors is good and well managed Commissioning Individual subdetectors have done many tests in the lab Need to increase as centralised activity in the pit Lack of services, particularly on A-side will be a drawback Cosmics are a valuable tool but are at risk of being lost as a contingency buffer for any further schedule delays Recommend appointing a “Cosmics Manager” To plan the cosmics running in detail (like the CMS MTCC) To make sure it happens and the data are analysed Conclusions