Installation and Commissioning of the

1

• Installation and Commissioning
  of the
• D0 Detector
• Overview since last review
• Organization
• Current status
• Installation sequence, logistics
• Schedule, timelines
• Commissioning status, plans
• Conclusions
• Jon Kotcher
• Brookhaven National Laboratory
• D0 Collaboration
• DoE Review
• Fermilab
• June 6-7, 2000

2
Overview of Last Six Months

• Directors Review of Installation
  Commissioning, December 7-8, 1999
• Extensive review
• Detectors, electronics, infrastructure, DAQ,
  trigger, online,
• Much learned, useful exercise
• Detailed reconsideration(s) of installation
  sequence in recent months
• Split silicon allows installation with end
  calorimeters end irons on platform
• Removes constraint of remaining in open
  configuration for its installation
• Large pieces can be put in final position earlier
  
• Can be installed, serviced, removed (upgrades) in
  Assembly or Collision Hall
• Same 39 gap between calorimeters exists in both
  locations, access not an issue
• Uninterrupted hookup commissioning time where
  it matters most
• Full six months prior to roll in
• Chosen sequence relieves pressure on end game
• Resources, manpower needs distributed more evenly
  in time
• Early confrontation of potential difficulties,
  recovery
• Cognizance of fixed end date an important
  ingredient in our deliberations
• March 1, 2001 taken quite seriously
• Carefully optimize remaining time in order to
  roll in complete, physics-ready detector for Run 2

3
Organization

• Installation Core Group
• J. Kotcher (APM - Installation Commissioning)
• R. Hance (Project Engineer Electrical)
• K. Krempetz (Project Engineer Mechanical)
• D. Miller (Technical Supervisor)
• Weekly Monday Installation Meeting
• Attended by all primary players, including
  detector representatives, Commissioning
  Coordinator (J. Yu)
• Schedule all jobs
• Monitor progress
• Track potential interferences (space allocation)
• Allocation of manpower, other resources
• Surveyors, welders, crane, engineering,
• Safety considerations, requirements,
  documentation
• All work of significance requires presentation to
  this group 1 month in advance before it can be
  scheduled
• Any work in Assembly or Collision Hall requires
  our approval
• Core group collaborates closely on all issues
• Priorities set by Kotcher, with extensive input
  from many others
• Ensure appropriate allocation of limited
  resources, space, etc.
• Timely decision-making

4
Approach to Schedule

• Durations/logistics discussed in detail with
  principals, including
• Detector installation, cabling, checkout
• Logistics/interleaving of electronics
  installation
• Conservative assumptions in many durations,
  intended to compensate for
• Ramp-up of tasks
• Possible delays in engineering/design completion,
  fabrication, etc.
• Unforeseen difficulties
• Reconsideration of durations associated with
  movement of large pieces
• Put large pieces in place as soon as possible
• Platform, trusses, Forward Muon octant
  installation, roll-in hookup in Collision Hall,
  
• Competing needs for space taken into account
  wherever possible
• Most remaining installation of Forward Muon
  octants assumed to be done serially
• Crane availability
• Unique needs, availability of specialized
  personnel
• Double shifts assumed, will begin June 19
• Hand-picked four-man team dedicated primarily to
  Forward Muon installation
• Limit scope of work safety, etc.
• Needed for timely completion of octant
  installation before roll-in
• Durations of associated tasks reduced by 30 -
  quite conservative

5
Installation Status

• Solenoid
• Installed, tested, mapped
• Hall probes calibrated in situ
• Central Preshower
• Installed with solenoid
• Central Muon
• Inner A-? counters, cosmic cap scintillation
  counters, refurbished PDTs
• Installed, being commissioned
• Level 1 2 Trigger Framework
• Installed, being exercised, commissioned
• Forward Preshower, Inter-cryostat Detector,
  Luminosity Monitor
• Mounted on faces of end calorimeters end April,
  2000
• Forward Muon
• All (16) A-layer MDT octants installed on end
  irons
• EMC trusses in Hi Bay, being prepped for move to
  sidewalk

These are final Run 2 systems, in place, varying
stages of hookup/commissioning
6
Muon Detector Upgrade
Central Trigger Scint (A-f )
PDTs
Forward Trigger Scint (Pixels)
Shielding
Forward Tracker (MDTs)
Bottom B/C Scint
7
Partial Installation Task List

• Below represents 10 of full Installation Task
  List
• Each task discussed in detail in weekly meeting,
  status updated
• List is priority ordered, maintained by Core
  Group

 
8
Representative Completed Tasks
9
C-layer MDT Being Assembled in Lab F

• Size, weight, number of Forward Muon octants
  places significant demands on resources/labor
• Critical sub-system during coming months

10
Commissioning Status

• Commissioning Coordinator appointed (J. Yu)
• Weekly Commissioning Meeting attended by all
  principals
• Progress reports, priorities set, monitoring of
  long- and short-term milestones, daily run plans
• (3) mini-workshops in DAB
• focus work toward achieving milestones
• Commissioning considerations being integrated
  into installation priorities
• Proper application of resources to ensure timely
  availability of crucial items
• infrastructure, cabling, electronics
  installation, etc.
• Installation commissioning intimately linked
• Recent accomplishments associated with March 15
  and May 19 milestones
• Established multi-detector, multi-crate readout
• Central Muon scintillation detectors, PDTs
• Calorimeter (instrumented with Run 1 electronics)
• Prototype Level 1 muon trigger exercised in situ
• Silicon front-end read out through VRBs
• Implemented cosmic ray triggers
• Two data paths exercised
• Primary data path, through Trigger Framework and
  Level 3
• Secondary path using crate control computers

11
Commissioning Status (contd)

• Established data transfer to DAB from SiDet
• Additional Run 2 functionality being developed
• Trigger Framework exercised
• Centralized run and communication control
• Online data shipped to Feynman Center, logged
• Online event monitoring and displays
• Development of SMT calibration system and
  databases
• Training of DAQ experts
• Documentation in place, maintained
• Extensive system tests/commissioning at remote
  laboratories
• SiDet (10 test)
• Cosmic test (CFT, Preshowers) at Lab 3
• Critical training bed
• Hardware, expertise, software applied directly to
  commissioning of experiment
• Integral part of D0 commissioning effort

12
Future Global Commissioning Milestones

• Jun 15 Begin SiDet full readout test
• Aug 01 Prepare front-ends for checkout during
  CFT waveguide installation
• Implement multi-run DAQ
• Complete necessary infrastructure (cabling, rack
  preparation, etc.)
• Prepare necessary safety documentation (ORCs) for
  unattended running
• Sep 15 Complete cabling and checkout of
  CFT-South
• Begin DAQ long-term stability test
• Commission Level 3 hardware, filters
• Commission FAMUS-North A-layer MDTs
• Dec 15 Begin cosmic ray commissioning of inner
  trackers (SMT-S, CFT), central muon
• Track reconstruction
• CFT muon triggers
• Commission quadrant of central calorimeter
  electronics

13
Conclusions

• Installation sequence well understood, many steps
  performed before by same people
• Work carefully organized and monitored, excellent
  support staff
• Schedule contains many conservative assumptions,
  still requires tightly choreographed series of
  steps
• Commissioning aggressively being pursued,
  plans/needs taken into account in installation
  scheduling
• Have not deviated from original plan to have
  complete detector hooked up in February, 2001

14
Installation Fallback Options

• CFT is done
• Only detector that, delayed, would have prevented
  movement of large pieces into final configuration
• Not an issue
• Fully expect both halves of silicon to arrive as
  scheduled
• Far prefer to install in Assembly Hall
• Ease of access, more forgiving time constraints,
  etc.
• Installation in Collision Hall would have to be
  scheduled
• But dont have to
• Infinite schedule contingency in this system
• Full Forward Muon system should make it
• Production lines set long ago to respect A, C, B
  installation sequence will not be altered
• Schedule is conservative, durations generous
• If portion of B-layer cant be mounted in time,
  roll-in without it
• We believe this layer can be installed in
  Collision Hall, if necessary
• Electronics can be installed after roll in, if
  needed
• Short accesses required, accelerator ramp up
• Have appropriate complement for detector hookup
• Commissioning time prior to roll-in will be
  optimized as fully as possible
• Will continue during initial exposure to beam

15
Installation Approach

• Installation is integrated part of each
  sub-project
• sub-detector design takes into account
  installation constraints, interferences, end game
  scenario
• designs developed from extensive discussions
  between groups
• A-? counter design based on detailed survey
  measurements
• design of forward pixels/MDTs in part driven by
  proximity to end iron
• FPS modular design motivated by
  installation/repair/access concerns
• CFT connector design developed within very tight
  spatial constraints
• Evolution of installation plan, activities in
  Assembly Hall, discussed in weekly meeting
  amongst principals
• More specific, detailed issues discussed in
  sub-project or other integration meetings
• Silicon, Fiber Tracker, Tracker Integration and
  Installation, Muon Commissioning, ...

16
Installation Approach (contd)

• Installation of detector is spatially very
  tightly constrained
• DØ is highly hermetic, sub-detectors very closely
  nested
• Ways in which it can be assembled very limited
• Choreography very well understood
• done before by many of the same people (Level 2
  sub-project managers and other physicists,
  technical staff)
• collaboration has experience bringing complex
  detector system online quickly, efficiently
• immediately started taking physics data upon
  roll-in for Run I with no engineering run
• Appreciate complexity of Run 2 system,
  concomitant demands on planning and execution

17
Organizational Overview

• Developing integrated approach to installation
  and commissioning
• intimately linked, natural way to approach it
• facilitates establishing priorities, decision
  making, related to
• spatial considerations, interferences
• availability of detectors, components, resources
• order in which things are done
• One person overseeing both operations at
  managerial level
• physicists, project engineers responsible for
  individual inst/comm sub-tasks (commissioning,
  tracker installation, mechanical/electrical
  infrastructure)
• sub-projects remain primary players in
  installation/commissioning of their individual
  sub-systems
• detailed plan for their sub-detectors developed
  by them

18
Tracking System Overview
0.5 m
1.3 m
All detectors in this volume use SVX II readout