1. Pre-installation and Functional Tests
Start Finish
Certification of field cage…………………
(Survey central electrode and end plates in horizontal)
Close field cage (dummy chambers)
Final leak test
HV test in air or CO2
Installation of readout chambers …..……
Place service support wheels on DELPHI frame
Place scaffolding on both sides
Mount insertion tool
Installation of readout chambers (72)
Tests for shorts on each chamber (20% HV, 100% Gate-V)
Thomas C. Meyer/EP-AIT

2. Service Support Wheel & ROC Mounting Tool
End Plate
ROC
Thomas C. Meyer/EP-AIT

3. Pre-installation and Functional Tests
Start Finish
Survey of readout chambers……………… 06/04 06/04
Load TPC with dummy ITS
Combine with ITS rail deflection test
Incline TPC to beam angle
1-2 mbar pressure in TPC
Mount “I-bar” on shaft side
Survey of chambers on both TPC sides (photogrammetry)
Record individual positions of chamber mounting points 3 for IROCs and 4 for OROCs (serve as reference)
Thomas C. Meyer/EP-AIT

4. Pre-installation and Functional Tests
Start Finish
Trial assembly of TPC in space frame…… 07/04 07/04
Survey and adjustment of TPC-Space Frame rail system
Move TPC into space frame and record insertion procedure
Check for stability of reference positions
Move TPC back into DELPHI frame
Space Frame
TPC in DELPHI Frame
Thomas C. Meyer/EP-AIT

5. Pre-installation and Functional Tests
Start Finish
Alignment of readout chambers…………… 08/04 08/04
TPC inclined and compensation (I-) bar mounted
New survey of TPC end plates
Individual machining (shimming) of mounting points
Placement of shims and final survey
Fill TPC with drift gas (Ar-CO2)
Requires that TPC gas system is temporarily installed in SXL2
Installation of laser calibration system……. 09/04 09/04
Mount beam telescopes and splitters on end plates
Geometrical adjustments
Tests with He-Ne-lasers
Thomas C. Meyer/EP-AIT

6. Pre-installation and Functional Tests
Start Finish
Installation of electronics……………………10/04 01/05
Install service support wheel and scaffolding
Mount front end- and readout electronics
Mount DCS, LV, cooling and services
Apply LV power (one 20° sector only); monitor temperature
Pulser, grounding and crosstalk tests
Check entire readout chain
HV tests with cosmics and laser (266 nm)
Pre-commissioning of TPC………………… 02/05 02/06
Sector-wise tests with cosmics and laser
Full functionality of readout system
Full functionality of DCS and support systems
Thomas C. Meyer/EP-AIT

7. Pre-installation Schedule
Delays prior to or during pre-installation shall be absorbed by the pre-commissioning period
Thomas C. Meyer/EP-AIT

8. Installation Procedure
Start Finish
Transfer of TPC from SXL2 to SX2………………
Lift DELPHI frame with TPC out of clean room
Load both on a low-bed truck
Move to SX2 by truck
Unload truck in SX2
Transfer from SX2 to UX25…………………………
Crane in SX2 lowers TPC to underground
Crane transfer from SX2 to UX25
Connect DELPHI frame to space frame
TPC insertion….……………………………………
Survey of TPC-Space Frame rail system (theodolites!)
Slide TPC into space frame
General survey & alignment (theodolites)
TPC in place and aligned………………………….. June 2006
TPC in DELPHI Frame
Magnet
Space Frame
Thomas C. Meyer/EP-AIT

9. Transport To SX2
TPC in DELPHI Frame
Thomas C. Meyer/EP-AIT

10. Lowering Of TPC Through Shaft
Thomas C. Meyer/EP-AIT

11. Insertion In Space Frame
Magnet
Space Frame
Thomas C. Meyer/EP-AIT

12. Installation Procedure
Start Finish
Preparation for ITS installation……………………
Installation of extension rails
Removal of TPC from interaction point (IP)
TPC on stand-by during ITS installation…………
Gas circulation active
Install Lasers and beam guides in UX25…………
TPC reinsertion………………………………………
Move TPC back into IP position
Survey (theodolites) and inspection for damage
Connection of power and services
Connection of readout/DCS cables
Removal of extension rails
TPC installation complete…………………………. Nov/Dec 2006
Thomas C. Meyer/EP-AIT

13. Installation Schedule
Thomas C. Meyer/EP-AIT

14. The DELPHI Barrel RICH Frame
Installation Tools
Only one (major) tool used:
Serves as handling, transport and installation tool. This frame is also used for the assembly of the TPC.
The DELPHI Barrel RICH Frame
Thomas C. Meyer/EP-AIT

15. Survey and Alignment
TPC and service support wheels sit on sliding (friction) pads
Need CERN survey team in all phases:
Photogrammetry on surface
Traditional methods such as theodolites in cavern
Need fiducial marks (“Taylor balls”) on end plates (6 + 6)
Need identifiers (etiquettes) on service support wheel
Requires perhaps special supports on service support wheel to make identifiers visible through cabling layers.
Should be considered in view of frequent TPC movements
Need lines of sight to Taylor balls
Space frame and rail sag
Space frame sags each time another detector is mounted!
--> do initial TPC survey and then a…
…final survey when space frame is full.
Thomas C. Meyer/EP-AIT

16. CERN Infrastructure Use
Service & Support groups:
EP-TA1 Gas working group
EP-TA2 Construction & assembly, installation assistance, emergency interventions
EP-ED Front end electronics
EST-LEA Installation & integration Cabling from service support wheels to racks
EST-SU/EXP Survey and alignment (Task Leader: C. Lasseur)
ST-CV Cooling and ventilation systems
TIS Authorization for use of equipment (lasers, field cage HV)
Cranes and special vehicles
Standard hall cranes
One movable crane (35 t) plus driver for one day
Low-bed truck (35 t) for one day and one transport
Distance is only ~100 m from SXL2 to SX2!
Thomas C. Meyer/EP-AIT

17. Commissioning DCS fully functional to take control of operation
Imperative for all subsequent tasks and functions
Gas mixture and quality
Detector was already filled with drift gas prior to ITS installation
Gas quality (O2 and H2O) checked
If not okay, check for leaks.
Full test of gas system and safety features
Startup of all cooling systems
Electronics, resistor rods, thermal screens
Low voltage
Monitor temperature
Check for shorts
Inspection of grounding and shielding
HV (all systems)
Relies on gas quality
Gradual ramp-up of all supplies and current monitoring
Thomas C. Meyer/EP-AIT

18. Commissioning (cont’d)
Readout system
Check for correct cabling
Check for oscillations, high pedestals, noise sources
Pulse readout electronics
Look for cosmic signals (if HV is operational)
Laser calibration system
Power lasers
Send beams to TPC
Requires special safety precautions!
Beam alignment and correlation
Read out tracks with DAQ
Do first calibration series with B = 0
Thomas C. Meyer/EP-AIT

19. Personnel and Resources
Field cage & CERN’s host responsibilities
2004
2005
2006
2007
EP-AIT
EP-TA1
EP-TA2
EP-ED
EST-LEA
EST-SU/EXP
ST-CV
TIS 3
0.25
0.5
0.6
0.1 18 4
Gas-WG
Front End Electr.
Install. & Integr.
Survey
Cooling
Safety
FC, DCS, Installation
Field Cage Constr.
General continuous support
0.01
3.5 1
0.2
Thomas C. Meyer/EP-AIT

20. Personnel and Resources
Readout chambers, cooling and services
Electronics
Laser calibration system
2004
2005
2006
2007
Bratislava
Frankfurt
GSI
Heidelberg x
1.5
Electr., LV, Services, Calibr. Gating, SSW
SSW, Constr.
Construction
Constr. & Cool.
Bergen
Heidelberg x
ALTRO
PASA
Copenhagen
0.1
All systems
Thomas C. Meyer/EP-AIT

21. Risks and Concerns Technical Personnel Scheduling
Commissioning period is short (but we have extensive pre-commissioning!)
Stability of readout chamber position in view of frequent TPC movements
Regular (yearly) TPC roll-outs for ITS maintenance and repair
Personnel
Possible shortage of manpower
Forecasting of resources difficult
Scheduling
Slippage due to shortage of manpower
Unknown delays from ITS maintenance scenario
Re-commissioning of TPC
Thomas C. Meyer/EP-AIT

22. Maintenance and Access In the Future
Field Cage (low risk item):
The most critical components are the resistor rods
They are exchangeable but require, scaffolding, special handling tools and partial dismounting of electronics.
If failure is on absorber side, TPC must be moved out of IP position, necessitating complete uncabling of the service support wheels.
Un- and recabling of TPC: max. 20 work days (8 h) Repair work and debugging: 10 d
ROCs (low risk item):
The most sensitive components are the wires (breakage and aging)
Same arguments as for the resistor rods
Electronics and DCS:
Standard maintenance at the level of the service support wheels
Requires scaffolding for access
Laser Calibration System:
Standard maintenance at the level of the end plates
Thomas C. Meyer/EP-AIT

23. ITS Trial Assembly
TPC ICV
Rails
Thomas C. Meyer/EP-AIT