Stato e Commissioning di CMS Nicola Amapane V Workshop Italiano sulla Fisica p-p ad LHC Perugia, 31 Gennaio 2008

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 2 CMS: Costruzione ed ingegneria civile 2003: stato di SX5 …e di UXC55! Per procedere in parallelo con i lavori di ingegneria civile, CMS assemblato superficie

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 3 Implicazioni: 1. Disegno modulare Dal LoI (’92): “The modular CMS detector allows an easy transfer to and installation in the underground cavern…” –3+5+3 slices “indipendenti” –15 pezzi da calare: “heavy lowering” Nov 2006  Gen 2008  Pixels  Tracker  ECAL  HCAL  Muon Detectors  Yoke  Coil YE-1, -2, -3 HF- YB-1, -2 YB0 YB+2,+1 YE+3, +2, +1 Minus side  0  Plus side HB+,- HF+

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 4 Implicazioni 2: Commissioning Costruzione in superficie, per quanto possibile Rivelatori pre-commissionati/calibrati indipendentemente in lab dedicati/su TB/con cosmici, es.: –Tracker assemblato e testato in superficie (Tracker Integration Facility), calato una volta completata l’installazione dei servizi in YB0 (e ECAL Barrel) –Camere a mu installate e testate in parte in superficie ed in parte in caverna –ECAL barrel assemblato in 36 supermoduli, calibrato su fascio e con cosmici, SM installati in caverna uno alla volta Test del magnete (2006)  Smontaggio, lowering e rimontaggio in caverna –Logistica non banale. In parallelo: Heavy Lowering, installazione e commissioning detector, trasferimento/installazione dei servizi (per detectors e magnete). Dipendenze… Test di integrazione –primo test di integrazione globale: Cosmic Challenge in parallelo al Magnet Test (MTCC) –Test di integrazione in caverna: Global Runs

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 5 DT: Commissioning camere in superficie (YB-1) Notare la pulizia delle camere!

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 6 …e nel pozzo (YB0) Distribuzione angolare cosmici nei 12 settori

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 7 Tracker alla TIF Asseblato alla Tracker Integration Facility – terminato Marzo 07 15% dei canali connesso ed acquisito, da 20 a -15 ºC 5 M di trigger acquisiti e ricostruiti in 5 mesi di presa dati –Enorme esperienza accumulata; Studi di performance –Validazione della procedure di computing di CMS Registrazione dati in DBS e shipment a CERN, Bari, Pisa e FNAL –Sistema di alignment laser commissionato Inner (TIB) e Outer (TOB) Barrel nel Tracker Support Tube Si  strips: 223 m2 of silicon sensors, 10 M strips, 10 pts, r = 20 – 120 cm

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 8 TIBTOB Preliminary TK: Studi di performance alla TIF Scint. Conf. B, Room Temp Scints Conf. C, Room Temp 10°0°-10°-15° A cosmic at -15°C Validated clusters shown Qualità del tracker eccellente: Dead or Noisy Strips < 0.5%, Stabile Signal: Noise > 25:1 TIB → StoN ~ 27; TOB → StoN ~ 31; TEC → StoN ~ 31

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 9 ECAL barrel Super Module (1700 crystals) endcapsupercystals (5x5 crystals) Pb/Si preshower barrel cystals EndCap “Dee” 3662 crystals Barrel: |  | < Super Modules crystals ( 2x2x23cm 3 ) EndCaps: 1.48 < |  | < Dees crystals (3x3x22cm 3 ) PWO: PbWO 4 about 10 m 3, 90 t

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 10 ECAL Performance su TB Risposta a e di alta energia Risoluzione eccellente Dead/noisy channels < % per SM Temperature Stability: ≤ 0.1 °C Light response stability: ≤ 0.1% 0.5%

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 11 EB intercalibrazione Tutti I SM calibrati con cosmici, cross-check con cristalli su fascio di e. Intercalibrazione iniziale al 1.5%  = 1.5% Confronto calibrazione da e beam - cosmici

Lowering ed installazione in caverna ovvero: 2007: Un anno “in calando”…

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 13 Novembre 2006 HF- HF+

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 14 Gennaio YE+3 (30 Nov 06) YE+1 con HE+ (300 ton!) (9 Gen 07) YE+2 YB+2 (19/1/07) DT+RPC YE+: RPC+CSC+HE (2)

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 15 Febbraio Live coverage sulla BBC. Stimati 200M spettatori worldwide. YB0 e magnete (2000 tons) Feb. 28, 2007

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 16 Aprile Insertion of HCAL Barrel Apr 07 HB+ Lowering (Feb)

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 17 Completeta Installazione ECAL Barrel - (22/5/07) Maggio

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS SMs installati e testati in 12 giorni lavorativi canali morti: 19/60200 Barrel ECAL Installato (27 Luglio) Luglio

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 19 Ottobre Lowering di YB-1 e YB-2

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 20 Ottobre (2) Installazione ultime camere DT/RPC (in caverna) 26/10/2007

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 21 Novembre Servizi YB0 completati Ad Aprile

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 22 Rotation of Disks YE-3 6/1 Dicembre

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 23 Dicembre (2) Tracker lowering

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 24 Dicembre (3) Tracker Insertion - Dic. ‘07

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 25 Gennaio 2008 YE-1 with HE- 22/1/08 HALL VUOTA!

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 26 ECAL Endcaps: status Dee1 completato. SCs on Dee2 by Jan 2008 Goal: EE+ pronto per installazione a fine Mar 08 –Cristalli, SM: OK –Critical path: Super Cooling Blocks EE- successivamente SuperCooling Block

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 27 Status of Pixels Barrel - Layer 1: +x-side The Complete FPix Detector is at CERN. System Tests of the first 3/4 of the Detector are making good progress. The BPix Commissioning System is complete and has been successfully tested at PSI. Goal: ready for Installation into CMS in March 2008 Forward

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 28 Primo test di integrazione MT/CC Agosto 2006 Magnete testato. Operazione a 4 T, stabile Mappa della regione interna a 2, 3, 3.5, 3.8 e 4 Tesla –Precisione di 5 x Dati ben capiti –Nuovo modelling (comprende yoke): accordo a + del 0.1% nella regione mappata Integrazione e operazone di ~ 1/20 di CMS –Rivelatore, trigger, DAQ, offline sw –Dati con tutti i rivelatori a 4 T –Trigger rate fino a 200 Hz –200M cosmici acquisiti; usati per molti studi dedicati –Molti problemi trovati… e risolti Integrazione della collaborazione! Run 2605 / Event 3981 / B=3.8 T / , 22h Muon traversing DT, RPC, HCAL, ECAL, Tracker B Mapper B vs z, 

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 29 ~1/12 of endcap muon system CSC+RPC (~60°) ~ 1/24 of endcap HCAL (~30°) ~ 2/9 of barrel HCAL (~2  80°) 2 Barrel ECAL modules (~40°) ~1/20 of barrel muon system DT+RPC (~60°) Tracker modules (~1%) parts of: inner barrel layer 2&3, outer barrel layer 1&5, endcap disk 9 Fase 1: partecipano tutti i sottorivelatori, B=0, 3.8T Fase 2: B field mapper al posto di tracker+ECAL, mapping da 2 a 4 T I rivelatori nel Cosmic Challenge

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 30 Global Runs Esercizi programmati di integrazione “verticale”di tutti gli aspetti della presa dati: sottorivelatori, trigger, DAQ, DQM, computing (incluso distribuzione dei dati ai Tier0, Tier1 and Tier2) Aumentando man mano: funzionalità inclusa - complessità First cosmic muon triggers Upgrade to final DAQ software architecture First coincidence of 2 subsystems Reached scale of MTCC’06 Final DAQ hw Final services

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 31 Global Run Agosto: ECAL+DT… ECAL & DT chambers synchronized with the CMS clock The DT trigger is synchronized with the DT ReadOut The DT trigger is integrated with the CMS Global Trigger The ECAL & DT r/o is integrated with the GLOBAL DAQ Shifters also at FNAL, read out FEDs from each sub-detector

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 32 HCAL and Drift Tube coincidence Global Run Settembre HCAL zero-suppression is off

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS Nov-Dec Global Run 100% of HB 50% of HF, HE 20% of DT (YB0), HO 10% of barrel RPC, EB (for a few days) 0.04% of strip tracker (6 module RIB) –Synchronized –10M events logged and available for analysis at all T1 centres and CAF Airshower triggered by RPC and with DT segments reconstructed at HLT R30333E863

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 34 Global Run Novembre alcuni dei risultati raggiunti… Transition to final DAQ hardware in the surface building New run control and release of XDAQ operational New GT firmware (and related control SW) successfully deployed All of HCAL partitions powered up and included in readout 4 ECAL Barrel Supermodules readout for a short time (the corresponding FEDs have been part of extensive tests with a simulated payload) 1 Tracker FED connected to a live front end (ROD In the Box, RIB) placed inside ECAL to test readout and possible coherent noise due to concurrent data taking Completely powered YBO wheel for DT, 50 chambers in readout DT top/bottom trigger, RPC trigger, to GMT/GT 6 sectors spread over two wheels for RPC enabled in trigger HCAL Mip trigger fed to the RCT/GCT electron channel Successful pattern tests for EB MIP trigger fed to the RCT/GCT electron channel (front-end data interrupted by the failure of the EB cooling pumps) High rate random trigger tests (up to 30 kHz for Tracker, Trigger and DT) HLT running unpacking, analysis and selection code (producing several streams of data) DQM in routine operation for all subsystems, and new DQM GUI successfully deployed Calibration workflow deployed during run with new HCAL and DT calibrations computed from data and inserted in database (in one case computed at Tier-2) Data dispatched to all Tier-1s Data promptly reconstructed at Tier-0 Data promptly analysed at ROC and CAF Luminosity server configured at run start by the Trigger Supervisor, Lumi-HF DQM, and injection of lumi data into lumi segments during the T0 repacking step

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 35 Primo candidato HLT! Fit (B=0…) di traccia in 4-stazioni DT+RPC, on-line nella filter farm Il primo vero candiato di High Level Trigger!

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 36 Commissioning del Computing, Software e Analisi (CSA07) Mimic in detail what is needed in 2008 (at a scale of 50%) 200 Mevt mis-calibrated/mis-aligned (for pb-1) Making (at the T0) and distributing (to all T1 centers) the AOD data. Running of skims at Tier-1 centers Re-reconstruction at the T1 centers Re-making of the full AOD samples after a re-reconstruction step. Copying of the skimmed datasets to Tier-2 centers and execution of analysis exercises at these centers. Parallel Monte Carlo production of signal events at the Tier-2 centers CAF (CERN Analysis Facility): first test of “Express Line” for fast turnaround of a few analyses. “Metrics almost all met but separately and intermittently. Need work towards attaining stable, sustained and simultaneous operation.”

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 37 Preparazione alla fisica Prior to beam: early detector commissioning –Readout & trigger tests, runs with all detectors (cosmics, test beams) –Test of reconstruction wherever possible Early beam, up to 10 pb -1 : –Detector synchronization, alignment with beam-halo events, minimum-bias events. Earliest in-situ alignment and calibration –Commission trigger, start “physics commissioning”: Commissioning of physics objects; measure jet and lepton rates; observe W, Z, top And, of course, first look at possible extraordinary signatures… Physics collisions, 100 pb -1 : measure Standard Model, start search –10 6 W  l (l = e,  ); 2x10 5 Z  ll (l =e,  ); 10 4 ttbar  +X –Improved understanding of physics objects; jet energy scale from W  j j’; extensive use (and understanding) of b-tagging –Measure/understand backgrounds to SUSY and Higgs searches –Initial MSSM (and some SM) Higgs sensitivity –Early look for excesses from SUSY& Z/jj resonances. SUSY hints (?) Physics collisions, 1000 pb -1 : entering Higgs discovery era –Also: explore large part of SUSY and resonances at ~ few TeV

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 38 T&P Z  ee Efficiency from T&P: 94.36±0.24 Efficiency from MC truth: 94.63±0.24 } (for 10 pb -1 ) Tag and Probe (T&P): identify a physics object in an unbiased way in order to study efficiencies. One object (tag) has strict ID criteria imposed on it. Second object (probe) has looser ID criteria. Additional property that links it to the Tag object to ensure a pure sample. Z  ee events: one tight electron (tag); the other can be a probe, provided the invariant mass of the pair is ≈M Z Commissioning of phyiscs objects: data Driven Methods

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 39 Ci stiamo avvicinando!!!! Febbraio –Test magnete a bassa corrente (yoke aperto) –Weekly “private runs” (1 / 2 subdet + Trigger+cDAQ) –DAQ/Trigger consolidation Fine Marzo –End of tracker cabling –Cosmic run a 0T : TK, DT 3 wheel, ECAL, HCAL, CSC+, RPC (parte) Fine Aprile –Beam pipe closed and baked-out –Installazione pixel Maggio –Combined Computing Readiness Challenge –Target: Cosmic Run a 4 T. CMS ready for beam, taking cosmics CMS chiuso, 1 EE, pixel.

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 40 Conclusioni Enormi progressi nel 2007 –Grazie allo sforzo di molti dei presenti!! Costruzione e installazione in stato avanzato. La funzionalità (a livello a volte base a volte finale) di tutti i componenti è stata commissionata –Test “orizzontali”, con scala crescente –Test di integrazione end-to-end con complessità e scala crescente Il lavoro di commissioning svolto conferma le performance attese dei rivelatori Computing, Software & Analysis: 24/7 50% of 2008 Preparazione alle analisi di fisica in corso A Maggio: CMS completo, chiuso, B on, in presa cosmici –Pronto per i fasci

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 41 -BACKUP-

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 42 Off-Detector Electronics Generally HV supplies are either installed or not on critical path. Availability of front ends for installed detectors depends on availability of Low Voltage supplies and/or service infrastructure availability (cables, Safety system, cooling) More than 90% installed and tested (installation started January 07!)

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 43 Calorimeter Triggers ECAL TCC GCT Source Cards RCT GCT Central Rack STATUS:  Fully Installed: ECAL Barrel, HCAL & RCT Trigger, GCT electron trigger  Pattern tests of electron trigger up to GT run successfully  ECAL and HCAL mip triggers (using electron trigger path) tested successfully PLANS : GCT jet trigger available in February CONCERNS: Production of ECAL Endcap TCC boards starting in December HCAL HTR

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 44 CSCTF Rack Sorter Crate (full) Trigger Crate (full) DAQ & Control Crate RPC Trigger Crates DTTF Crates STATUS:  Operational: 3 out of 6 DT Track Finder Crates, CSC TF Crate, RPC Trigger central crates and 2/12 PAC Crates are operational  GMT is operational  DT, RPC and CSC Cosmic triggers are being used in GRs PLANS: Final cabling of DTTF crates in January CONCERNS: Production of RPC trigger boards start to arrive to CERN in January Muons Triggers

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 45 TTC Racks STATUS:  TTC system is operational  GT system is operational (including new TCS board)  New release of Trigger Supervisor software is available  Many software improvements (integration with RCMS, expert monitoring and control panels, etc.)  Routinely in operation in GRs PLANS:  Further software developments, emulators config from DB  Installation of final RF2TTC board after GREN GT/GMT Crate Main Concern Commissioning time is short Global Trigger & Software

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 46 Detector readout. 650 Slink/FMM cables100% 650 FRL/FMM modules 100% 60 FRL/FMM crates100% 200 DAQ/DCS PCs 100% IT infrastructuresin Operation FED builders. Myrinet switches100% Myrinet Fibers (1024) 100% D2S optical cables100% SCX installation 110 water cooled racks100% 800 PC PE % EVB GBE switches 100% GBE infrastructures100% DB and Mass storageInstalled DAQ commissioning USC MiniDAQ (256x8x8)in Operation Monthly Global Run in Operation D2S 2 x Tb/s Link 100% tested Software releasesOngoing SCX central DAQ (64x200)Ongoing 2007: DAQ installation & commissioning

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 47 Goals for cosmic runs: general Synchronization between subdetectors Validate OMDS, Orcon (& Orcoff) DB dataflows, tools etc. Validate HLT & DQM reco and monitoring Validate CAF workflow for reconstruction, calibration, alignment Validate Tiers workflow: transfer, reconstruction, (possibly calibration and alignment) Trigger validation studies with emulators Global reconstruction: verify mappings, efficiency ….

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 48 Goals for cosmic run DT: –Synchronization and storing of synch constants (both coarse (at the BX) and fine (a few ns) –Alignment (track extrapolation) –T0 –Map of noisy and dead channels and stability –Eta trigger –With field on: Track reconstruction Pt assignment CSC: mainly local runs collecting ‘local’ cosmics –typical cosmic rate ~0.3Hz/CSC (can use local DAQ to do local reco) –10% overlap between chambers –take data for 4-5hrs week in order to get stat.err. down to ~5% (read: 500 tracks) ECAL –Comparison of response between P5 at 0T and P5 at 3.8T, and between P5 and cosmic ray exposure in H4, a sample of a few tracks per crystal (for the SMs at 6 and 12 o’clock) should suffice –Verification of timing among different (halves of) SMs, order of ten tracks per crystal, aligned with crystal axis, should suffice. (Timing among crystals in the same SM half is done through laser events.) –Continue TPG studies with MIPs, efficiency, geometrical correlation … ( working on estimating stats needed) HCAL –System checkout and calibration of HO (working on estimating stats needed) Tracker –Cross-Check detector status obtained without particles –Extract first calibration and alignment constants at upper structures level

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 49 Goals for ‘global’ technical runs Prove High rate capability of CMS Random triggers used to study DAQ correlated noise and pedestals (esp. for calorimeters) Check VME (spy mode) concurrent readout Check influence of FE readout of non-event data (for token ring architectures) during data taking. Check calibration triggers workflow (e.g. ECAL laser) Study self-trigger noise for calorimeters

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 50 CSA07 Metrics

Nicola AmapanePerugia, 31/1/2008 Stato e commissioning di CMS 51 CSA07: Some Performance Plots Challenge Day Expected Rate for 100Hz 24x7 Approx. CSA07 metric in terms of expected data rates. Red – data rate into CASTOR Green – data rate out of CASTOR CSA07 metric