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Detailed updates on the installation and commissioning of various detector components from June 2000 to March 2001, including truss movements and system integrations during the D0 commissioning. Follow the progress through precise dates and steps achieved in positioning and configuring the particle detector.
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Current Detector ConfigurationJune 6, 2000 • Solenoid, Central Preshower installed in central bore • A-layer MDTs installed on inner faces of end irons • Central muon system installed, being commissioned • South end calorimeter, end irons on sidewalk • North and south trusses in Hi Bay, being prepped for move to sidewalk • Central iron, north calorimeter in open positions to allow access • Shield wall up
Current Detector ConfigurationJune 6, 2000 • South end calorimeter, end irons on sidewalk • A-layer MDTs installed on faces of end irons • Commissioning Level 1 trigger, muon system, online, silicon front-end, solenoid
Install Fiber Tracker in SolenoidJune 16-29, 2000 • Fiber Tracker being installed in central bore • North A-layer pixel sheet mounted on shield wall • Commissioning of DAQ, online, central muon system, etc. continues
Move Platform West, Pick Up End IronsJuly 11-28, 2000 • Fiber Tracker installed, south end calorimeter back in place on platform • Platform moves west to pick up two end irons • Detector buttoned up for move • Commissioning interrupted until platform returns east (services disconnected)
Move Platform West, Pick Up End IronsJuly 11-28, 2000 • Platform moves west to pick up two end irons • Movable Counting House moves with detector during pick up • Assembled north A-layer pixel plane remains on shield wall
North & South Trusses Move to SidewalkJuly 31 – August 25, 2000 • Platform returns to east position with end irons installed • North & south trusses, shielding brought down to sidewalks from Hi Bay, assembled • Detector remains buttoned up until trusses are down • Cabling of Fiber Tracker begins after south truss is in place • Platform services reconnected, commissioning resumes
North & South Trusses Move to SidewalkJuly 31 – August 25, 2000 • Platform returns to east position with end irons installed • North & south trusses brought down to sidewalks • South calorimeter, end iron opens to allow cabling of Fiber Tracker • A-layer north pixel sheet mounted on shield wall, awaits installation
A- & C-layer Pixels & MDTs InstalledNovember 10, 2000 • A- and C-layer detectors mounted • SMT-S installed, hooked up – SMT-N being installed • Trusses ready to install in Collision Hall • South calorimeter, end irons open to allow access to inter-cryostat region • Commissioning of CFT, SMT, Forward and Central Muon, attendant readout
Trusses Installed in Collision HallNov 20 – Dec 11, 2000 • North & south ends of shield wall removed, blocks stacked in Hi Bay • Loaded trusses rolled into Collision Hall, surveyed • Platform remains in Assembly Hall, rolled in after trusses in place • Commissioning of detectors on platform continues
Trusses Installed in Collision HallNov 20 – Dec 11, 2000 • Mounting of B-layer MDTs on outer faces of end irons near completion • North B-layer pixel plane assembled on shield wall • End cryostats/irons open as logistics allow • Cosmic ray commissioning & triggering using SMT, CFT, and muon
Detector Rolled in and Hooked UpFebruary 16, 2001 • Platform rolled in to meet trusses • Full detector in final closed position: hooked up, ready for beam • Shield wall back up • Movable Counting House travels with detector, cable bridge down • Commissioning with cosmic rays continues until beam is delivered (March 1, 2001)
Access to Detector in Collision Hall Closed Position - Data-Taking Open Position - Detector Access North B-layer pixels open North end iron closed South calorimeter open South end iron open Shielding retracted
Forward Muon B-Layer InstallationMay, 2000 • End irons moved toward center of Assembly Pit to allow access for B-layer installation/surveying • Commissioning continues
No LHe LAr #9 #4 #5 #1 #2 #6 #7 #3 #8 #10 #11 D0 Commissioning Timeline Commissioning/Integration Goals 2000 2001 J F M A M J J A S O N D J F M D Forward muon C-layer MDTs/pixels installed/commissioned Half of CFT, CPS hooked up, checked out Silicon front-end installed/commissioned Roll in Beam-ready Forward muon A&B layer MDTs/pixels installed/commissioned DAQ/online system running in user mode Run II begins: Mar 1, 2001 SMT, CAL fully added to commissioning chain, exercise full triggering with all major systems Integration Goal #1: dual muon crates, initial muon triggering/filtering, ship data to farm, run reconstruction, online event display Integration Goal #2: Initial triggering on L1 CFT/CPS, begin linking tracks in CFT/CPS/CMuon, begin Level 2 trigger integration Integration Goal #4: Full detector in steady-state Cosmic Ray Commissioning Integration Goal #3: Add Central Calorimeter to commissioning stream, most major systems being commissioned Begin full central muon system, integrate Level 2 muon trigger at DAB test stand
Trusses Assembled on North & South SidewalksJuly 21 – August 25, 2000 • Detector returns to east position with end irons installed • Trusses brought down from Hi Bay to sidewalks • Central irons, calorimeters remain closed for movement of trusses • Hookup of Fiber Tracker begins after south truss is in position • Commissioning resumes, begin integration of CFT
Current Detector ConfigurationPhase I • A-layer MDTs, Pixels being mounted, surveyed onto faces of end irons • C-layer truss and shielding has arrived in Hi-Bay, being dressed • Remainder of detector remains open for access
Current Detector Configuration • Commissioning continues, using Central Muon as prototype system: • Multi-crate readout of full central muon system • Event monitoring, crate control, steady DAQ running, filtering • Exercise reconstruction, online event display (on cosmic ray muons)
Forward Muon B-Layer InstallationMay-June, 2000 • A-layer planes installed • B-layer MDTs, Pixels being mounted, surveyed onto faces of end irons • C-layer trusses and shielding continue to be dressed in Hi-Bay
Install Fiber Tracker in SolenoidMay, 2000 • Fiber Tracker + Cart/I-Beam system lowered into gap between South End Calorimeter and Central Calorimeter • Rolled into solenoid bore along I-Beam Cart System Fiber Tracker
EMCs Installed in Collision HallDecember 11, 2000 - January 11, 2001 • Shield wall is broken down, moved to now free space in Hi-Bay • North and South C-layer trusses/shields, having been assembled on sidewalk, rolled into Collision Hall - surveyed into place • Detector will be rolled into place to meet trusses
EMCs Installed in Collision Hall • Full Cosmic Ray Commissioning of all systems continues during most of this period • End irons, calorimeters can be opened for access
Detector Rolled In, Hooked UpPhase III • Detector installed in compact space • Access to internal tracking detectors, end muon detector planes must be carefully coordinated
South EMC Truss Moves to South SidewalkNovember 29- December 5, 1999 • South C-layer truss moves to south sidewalk • EMCs, shielding re-assembled on sidewalk to prepare for rolling in
South EMC Truss Moves to South SidewalkNovember 29- December 5, 1999 • South C-layer truss moves to south sidewalk in two pieces, reassembled • Preparing to take down shield wall for roll in
The DØ Upgrade Tracking System Charged Particle Momentum Resolution pT/pT ~ 5% @ pT = 10 GeV/c