14/11/2007 CERN - Muon Week 1
Detector DescriptionDetector Descriptionstatus and plansstatus and plans
Laurent ChevalierDapnia – Saclay
Stefania SpagnoloUniv. del Salento and INFN Lecce
14/11/2007 CERN - Muon Week 2
OutlineOutline General issues and plans:
layoutsM4 setuptoward a revised layout R in detector description
validationdead matterMuonGeoModel RTT jobs
MuonGeoModel MDT deformations Volume clashes Optimizations
14/11/2007 CERN - Muon Week 3
+2.000m w.r.t nominal position
+1.711m w.r.t.nominal
position
only EIL4 unchange
d
Layouts – Layouts – M4 setupM4 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
14/11/2007 CERN - Muon Week 4
Layouts – Layouts – new version of amdb for new version of amdb for
layout Rlayout R 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
Describe more realistically layout R in the software
14/11/2007 CERN - Muon Week 5
Validation – Validation – dead matterdead matter
Materials in MuonGeoModel vs AmdcMaterials in MuonGeoModel vs Amdc
G4 via GeoModelAmdc
Layout R – integrated X0via Amdc Dead Matter service
(reading Amdb)by shooting geantinos in the G4
simulation of the MS and integrating X0 along the track
pathmany thanks to A. Di Simone
14/11/2007 CERN - Muon Week 6
Validation – Validation – dead matterdead matter
Identified some inconsistency between GeoModel and primary numbers for dead-matterall 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
14/11/2007 CERN - Muon Week
Hole
connectionbetween coiland support
14/11/2007 CERN - Muon Week
R
tube lenght in eta 1.66->2.10
Aligment tube and ECT coil supporthard coded in GeoModel since...1.5 years
14/11/2007 CERN - Muon Week 9
Validation - Validation - MuonGeoModel RTTMuonGeoModel RTT
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)
3 jobs running in the RTT tests - MuonGeomRTT3 jobs running in the RTT tests - MuonGeomRTT
14/11/2007 CERN - Muon Week 10
Validation - Validation - MuonGeoModel RTTMuonGeoModel RTT
RPC hits X-Y view
MDT hits R-Z view
relocated MDT hits
distance from the geantino track
relocated MDT hits
distance from the geantino track
z direction
a selection of plots from this week rel_1 nightly RTT - hit a selection of plots from this week rel_1 nightly RTT - hit relocationrelocation
14/11/2007 CERN - Muon Week 11
MuonGeoModel - MuonGeoModel - MDT deformationsMDT 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
14/11/2007 CERN - Muon Week 12
MuonGeoModel - MuonGeoModel - Volume clashesVolume 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
14/11/2007 CERN - Muon Week 13
MuonGeoModel - MuonGeoModel - OptimizationsOptimizations
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
not nice 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 communitywait for the outcome of HLT performance tests
memory vs cpu time
14/11/2007 CERN - Muon Week 14
MuonGeoModel - MuonGeoModel - OptimizationsOptimizations
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 …
MuonGeoModel vs muon EDM