Scheduling risks and critical paths

1
Scheduling risks and critical paths

• Services
• Major structures
• Detectors
• Installation

Installation Review C.W.Fabjan 12.04.2005
2
Services

• Status
• Cooling, gas, electricity, defined at 100
• Installation period in UX25 01/05 to 03/06
• Detector cables defined at 80
• Installation period in UX25 08/05 to 04/06
• However
• preparation of integration drawings and
  information for contractors (e.g. cable database)
  exceedingly time-consuming need to find
  assistance now to avoid services becoming a
  critical-path item

3
Services Issues needing attention

• Transfer of responsibilities for Ch. Gregory
  (retiring 08/05) to several colleagues
  (identified) in PH and in TS in close
  collaboration with LEA/TS
• Availability of designer was below needs we have
  implemented improvement plan
• Cost of installation, using CERN/TS contracts
  excellent quality, but unit costs above ALICE
  budget use of other contractors under evaluation
• Conclusion due to special efforts by many
  colleagues however, attention services should
  not become a critical-path item

4
Major Structures

• Muon Magnet
• Technical issues under control
• Pre-assembly was found to be essential
• Issues needing attention
• WP Supervisors changing (retirement)
• Mechanics support communication (Chinese,
  Russia)
• Need to work overtime/two shifts to meet schedule
• Critical path
• Magnet must be fully operational by July 15th/05,
  to meet B-field mapping schedule (B-field mapping
  apparatus to be handed to LHCb on Sept 15)
• Have at most 2 weeks contingency

5
Major Structures

• Absorbers
• All constructed
• Need to design certain installation tools
• Critical path vacuum chamber needs to be
  installed on surface (space constraints in UX
  25) only 6 weeks contingency to meet absorber in
  installation Nov. 05
• Manufacture, Cu- coating of large, conical vacuum
  chamber considerably more difficult than
  anticipated

6
Detectors ITS

• Recognized to be on critical path for
  installation starting 10/06
• Steps identified to create a modest level of
  contingency to increase probability of meeting
  installation dates
• SPD
• Study increase of production rate of half
  staves
• Plausible needs extra tooling work in industry
  ordered
• Need to evaluate component availability capacity
  in collaborating institutes
• Study increased assembly rate of sectors
• Shift integration/test activity to CERN two
  project associates will be hired (funds
  identified)

7
Detectors ITS

• SDD
• Evaluate possibility to increase sensor
  production rate at CANBERRA
• Monitor chip cable production in Karkhov
  (followed by ITS PL).
• Evaluate priorities to advance production of one
  critical R0-board (Carlos)

8
Detector ITS

• SSD
• Module production rate needs to be increased by
  50, necessary steps under evaluation (personnel
  issues)
• Ladder production not yet started need 1
  ladder/week, site Cables need continuous
  monitoring
• ITS conclusion
• Collaboration highly motivated to have ITS on
  time for installation phase 3 (start 09/06)
• No-return 12/05 for 09/06 installation date
• Existing ITS test support would have to be
  adapted for installation

9
Detectors TPC

• Installation of Readout chambers (ROCs) on end
  plates of Field cage
• Installation tooling improved after initial tests
• Access and handling
• - Large platform (full width) adjustable over
  full height
• - Small crane for chamber handling
• Further practicing/training during 05/05 at CERN
• Start installation 06/05
• - Have foreseen to work in two shifts ? install 2
  ROCs ( sector)/day
• Obviously, a very delicate operation working
  with highly experienced personnel
• Installation of electronics
• Installation procedure, on-line testing well
  understood
• TPC ready for testing in SLX2 by 02/06

10
Detector TRD, TOF

• TRD
• Complex, ambitious detector
• Schedule risk due to highly advanced readout
  electronics and integration
• First supermodule ready for installation by
  03/06, in time for phase II installation
• TOF
• Several super modules will be available for phase
  II
• Conclusion TRD,TOF
• On track for initial phase installation during
  phase II

11
V0, T0

• Absolutely essential
• Detector construction started
• Electronics
• T0 First FE working at prototype stage
• Readout/DAQ essential units taken from TOF
• V0 close involvement of electronics
  coordinator
• HV, LV power supplies in common
• Conclusions
• Given the central role of the T0, V0-
• program is closely followed by TC
• Schedule has considerable margin, but electronics
  only partially tested
• The two systems (V0, T0) provide redundancy,
  alleviating risk

12
Muons

• Tracking and Trigger chamber construction
  scheduled to be terminated 12/05
• Tracking electronics
• Manas 50,000 chips produced, but not yet tested
  (80,000 needed) initial tests of 200 chips meet
  specs, including improved gain uniformity tests
  and packaging in Singapore not trivial
• R/O cards (MANU) production critical industry
  being presently selected
• DAQ interface (CROCUS) still needs
  functionality and radiation tests needs one
  additional person
• Trigger electronics
• On chamber electronics produced under test
• Trigger processor (DARC) critical, but not
  needed for installation
• Summary
• Tracking, Trigger Chambers with associated
  electronics will be installed during 2006
• Personally concerned about high complexity of
  readout electronics (certain units only partially
  developed)
• Complex infrastructures optical alignment
  concept validated, but effort understaffed air
  cooling

13
HMPID, FMD, PMD, ZDC, PHOS

• HMPID Has always been on schedule
• installation early 2006
• FMD Sensors, FE electronics on schedule
• R0-DAQ TPC adaptation
• systems test however only 01/06
• PMD Technology successfully tested in STAR
• R/0 electronics is essentially identical to
  muon tracking electronics 20 000 Manas needed
• ZDC On schedule
• LHC-machine integration being finalized
• PHOS First module scheduled to be finished
  around end 2005

14
Trigger, HLT, DAQ, ECS

• Trigger
• All local Trigger Units (LTUs) fabricated and
  tested
• Central Trigger Processor (CTP) Under
  construction to be installed Q1/2006
• HLT
• Concept tested in testbeam
• Reduced version available Q4/06
• DAQ
• Recent Data Challenge has reached ALICE
  specification
• Fiber Network (DDL) defined being installed
• ECS
• Concept validated in beam test with three
  detectors
• Conclusion
• These systems are on schedule for early (from
  Q1/06 onwards) deployment in ALICE

15
Installation

• ALICE Schedule experiment closed 30/4/07
• Phase 1 Infrastructure, magnets
• On schedule to be finished 21/12/05
• Phase 2 HMPID, TRD, TOF, PHOS 01/01/06-31/08/06
• HMPID on schedule installation tooling exists
• TRD, TOF one/few modules on schedule
• installation, tooling exists, used in
  (essential) pre-installation
• PHOS module on schedule
• Muons tracking, trigger chambers
• Phase 3 01/09/06-28/02/07
• TPC, ITS, Forward Detectors, vacuum chamber
• Most complex and delicate phase
• Presently under test with real or mock-up
  detectors
• These tests have led to improved/modified
  procedures monitoring of space frame, TPC, beam
  pipe, etc exists or being constructed
• In addition Muon chambers

16
Installation/Commissioning

• Phase 4 01/03/07-30/04/07
• Install TRD, TOF modules
• Shielding close experiment
• Phase 5 01/05/07-30/06/07
• Provides additional contingency
• Commissioning of full experiment
• Summary
• Actual status indicates that
• Detectors available for installation sequence
• ITS
• - Steps in preparation to increase probability of
  timely completion
• - ITS collaboration and Funding Agencies working
  towards success