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Detector Description status and plans

Detector Description status and plans. Laurent Chevalier Dapnia – Saclay Stefania Spagnolo Univ. del Salento and INFN Lecce. Outline. General issues and plans: layouts M4 setup toward a revised layout R in detector description validation dead matter MuonGeoModel RTT jobs

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Detector Description status and plans

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  1. Detector Descriptionstatus and plans Laurent Chevalier Dapnia – Saclay Stefania Spagnolo Univ. del Salento and INFN Lecce CERN - Muon Week

  2. Outline • General issues and plans: • layouts • M4 setup • toward a revised layout R in detector description • validation • dead matter • MuonGeoModel RTT jobs • MuonGeoModel • MDT deformations • Volume clashes • Optimizations CERN - Muon Week

  3. +2.000m w.r.t nominal position +1.711m w.r.t.nominal position only EIL4 unchanged Layouts – M4 setup • Primary numbers available in a new Oracle tag in Sept. • MuonSpectrometer-R.01.01.Initial.Light-M4-EIL4only in ATLAS-CommNF-03-00-00 • TGC (T1,T2,T3) move by 2.000 m • MDT(EMS/EML) move by 2.000 m • End-Cap Toroid moved by 1.711 m • (Tile extended move by 1.227 m) • Used for M4 data reconstruction • Simulation not started yet: • a configuration problem (?) preventing correct simulation identifiers to be produced for TGC - under investigation • Adjustments will be needed for the M5 layout • end-cap chambers moved in the beam direction - in progress CERN - Muon Week

  4. Layouts – new version of amdb for layout R Describe more realistically layout R in the software • AmdbSimrec-R-02-01 is under development • first release of ascii format expected by end of November • then will propagate to Oracle  GeoModel  Simulation  full validation • based on AmdbSimrec-R-01-01 with updates of active components only (dead matter as in R-01-01) • Main changes: • corrected position of BIS, BIR and BIM (up to 7.5 cm in the radial direction) • new BIR subtype with correct RO/HV side • BOG, BOF, BOL will move by ~10 mm (to be worked out) • fix long beam type/size in BMF and EML1,6 to fix clashes (now avoided by hard-coding in MuonGeoModel) • RPC 17(in some BOG), 8(some special chambers in BMS across toroid ribs) correct eta strip number and pitch (to be worked out) impact on cabling • BML – change assignment of station eta  impact on Identifier dictionary CERN - Muon Week

  5. Validation – dead matter Materials in MuonGeoModel vs Amdc Amdc G4 via GeoModel Layout R – integrated X0 via Amdc Dead Matter service (reading Amdb) by shooting geantinos in the G4 simulation of the MS and integrating X0 along the track path many thanks to A. Di Simone CERN - Muon Week

  6. Validation – dead matter • Identified some inconsistency between GeoModel and primary numbers for dead-matter • all details in L. Chevalier talk @ Muon Reconstruction Session • Alignement bars through EC toroids not at the correct phi • phi position hard coded in MuonGeoModel • support between ECT coils too short • size hard coded in MuonGeoModel • clearance between connection box and voussoirs to be removed CERN - Muon Week

  7. Hole connection between coil and support

  8. R Aligment tube and ECT coil support hard coded in GeoModel since...1.5 years tube lenght in eta 1.66->2.10

  9. Validation - MuonGeoModel RTT 3 jobs running in the RTT tests - MuonGeomRTT • code + python in MuonGeoModelTest have been re-adapted in order to configure 3 RTT jobs (many thanks to Stephane W.) now running in the dev nightly builds • for each tube/strip/wire-gang dump global position + compare with a reference (for most relevant layouts); Check consistency of diff. versions of MuonGeoModel • hit-relocation: simulate geantino hits + run hit relocation; output: ntuple; root macro to generate standard plots (by Stephane). Check coherence of raw geometry (simulation) w.r.t. readout geometry (reconstruction) • AmdcMGM (by J.F. Laporte): build Amdc transient model + MuonGeoModel; compare global positions of each tube/strip/wire; Check coherence of two models (help enforcing coherence with primary number conventions) CERN - Muon Week

  10. Validation - MuonGeoModel RTT a selection of plots from this week rel_1 nightly RTT - hit relocation relocated MDT hits distance from the geantino track z direction MDT hits R-Z view relocated MDT hits distance from the geantino track RPC hits X-Y view CERN - Muon Week

  11. MuonGeoModel - MDT deformations • New agreed convention on MDT deformation parameters (C. Amelung and F. Bauer, Sept 3, Muon Alignment Meeting ) • new format of B-lines • Ivan Logashecho modified the kernel methods in MuonGeoModel to deal with deformation parameters (fully compliant with new conventions) • handle only parameters describing rigid tube displacements in the multilayer • integrated in tag MuonGeoModel-00-05-07 (to go in 13.x.0) • ok for B-lines 0 • no sensible overhead for extra transforms due to deformation parameters – from tests in 13.0.30 on MC samples with pile-up and cavern background (Niels Van Eldik) • tests of digitization with deformations to be resumed (D. Rebuzzi, R. Harrington) • access to B-lines from COOL to be enabled and tested; access methods to B-lines container to be provided • TO DO: comparison of B-lines implementation in Amdc-MuonGeoModel CERN - Muon Week

  12. MuonGeoModel - Volume clashes • GEANT4 recursive test (depth: 7 levels from Muon System tree top) very successful on latest tags • Needs tests of simulation with new version of GEANT4 (with improved multiple scattering) • Still to fix (in the active geometry sector) • feet region • chambers with cutouts CERN - Muon Week

  13. MuonGeoModel - Optimizations memory vs cpu time • MuonGeoModel (via the new tracking methods) allocates memory incrementally by building a cache with transforms for each MDT tube and RPC/TGC/CSC gas gap ! memory allocated by HLT tasks grows slowly during the run notnice in the online with 1GByte Ram available per task • implemented a switch enabling/disabling the caching mechanism to check the benefit of caching, memory vs cpu time; • Performance test will be done by running TrigMoore (started by F. Winklmeier) • option to fill the cache at start of run under study • will impact on initialization time – also critical for HLT • more caching + access via hash id was proposed by the reconstruction community • wait for the outcome of HLT performance tests CERN - Muon Week

  14. MuonGeoModel - Optimizations MuonGeoModel vs muon EDM • Id hashes for XxxReadoutElements (provided by new versions of MuonIdHelpers in dev branch – Ketevi) • detector manager can give access to XxxReadoutElements via detector element hash • XxxReadoutElements vs Data Collections • Mdt multilayer DD // Mdt chamber (2 multilayers) Data Collection • Rpc module DD // Rpc set (typically 2 Rpc modules) Data Collection • Tgc chamber DD // Tgc chamber Data Collection • Csc chamber layer DD // Csc chamber (2 layers) Data Collection • in a loop over a Collection, this implies using hit identifiers to retrieve the relevant XxxReadoutElement NOT OPTIMAL • better design under study • disc surfaces for TGC – on hold – optimize ~pointing phi strip description • a bug report concerning a single RPC surface for gas gap with two different strip panels … not suitable for new tracking ! to be fixed • generic (but important) optimizations under way: use of MessageStream / internal use of cached quantities / etc … CERN - Muon Week

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