Installation Review March ‘03 TPC Thomas C. Meyer/EP-AIT 1 Pre-installation and Functional Tests...

Thomas C. Meyer/EP-AIT 1

Installation Review

March ‘03

TPCPre-installation and Functional Tests

Start Finish Certification of field cage………………….. 01-04 03-04

(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 …..……. 04-04 05-04 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)


Installation Review

March ‘03

TPCService Support Wheel & ROC Mounting Tool


Installation Review

March ‘03


StartFinish

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)


Installation Review

March ‘03


StartFinish

Trial assembly of TPC in space frame…… 07/0407/04

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

vertical deflection of TPC supports

-14

-12

-10

-8

-6

-4

-2

0

-9 -8 -7 -6 -5 -4 -3 -2 -1 0

position of TPC

V [mm]

back supportleading support


Installation Review

March ‘03

TPC

StartFinish

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

Pre-installation and Functional Tests


Installation Review

March ‘03

TPC

StartFinish

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

Pre-installation and Functional Tests


Installation Review

March ‘03

TPCPre-installation Schedule

Delays prior to or during pre-installation shall be absorbed by the pre-commissioning period


Installation Review

March ‘03

TPCInstallation Procedure Start

Finish Transfer of TPC from SXL2 to SX2………………...05-06 05-06

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………………………… 05-06 05-06 Crane in SX2 lowers TPC to underground Crane transfer from SX2 to UX25 Connect DELPHI frame to space frame

TPC insertion….…………………………………….. 05-06 06-06 Survey of TPC-Space Frame rail system (theodolites!) Slide TPC into space frame General survey & alignment (theodolites)

TPC in place and aligned………………………….. June 2006


Installation Review

March ‘03

TPCTransport To SX2


Installation Review

March ‘03

TPCLowering Of TPC Through Shaft


Installation Review

March ‘03

TPCInsertion In Space Frame


Installation Review

March ‘03

TPCInstallation Procedure Start Finish Preparation for ITS installation…………………….. 06-06 06-06

Installation of extension rails Removal of TPC from interaction point (IP)

TPC on stand-by during ITS installation………….. 06-06 10-06 Gas circulation active

Install Lasers and beam guides in UX25…………. 06-06 08-06 TPC reinsertion……………………………………… 10-06 11-06

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


Installation Review

March ‘03

TPCInstallation Schedule


Installation Review

March ‘03

TPCInstallation 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


Installation Review

March ‘03

TPCSurvey 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.


Installation Review

March ‘03

TPCCERN 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!


Installation Review

March ‘03

TPCCommissioning 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


Installation Review

March ‘03

TPCCommissioning (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


Installation Review

March ‘03

TPCPersonnel 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 3 3 0.25

0.5 0 0 0

0.6 0.1 0.5 0

18 0 4 0

Gas-WG

Front End Electr.

Install. & Integr.

Survey

Cooling

Safety

FC, DCS, Installation

Field Cage Constr.

General continuous support

0.01 0.010 0

3.5 1 0.2 0.1


Installation Review

March ‘03

TPCPersonnel and Resources

2004 2005 2006 2007

Bratislava

Frankfurt

GSI

Heidelberg

x x x x

1.5 1.5 1.5 0

x x x 0

Electr., LV, Services,Calibr. Gating, SSW

SSW, Constr.

Construction

Constr. & Cool.

Bergen

Heidelberg

x x x x

x x x x ALTRO

PASA

Copenhagen 0.1 0.1 0.1 0 All systems

Readout chambers, cooling and services

Electronics

Laser calibration system


Installation Review

March ‘03

TPCRisks and Concerns

Technical 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


Installation Review

March ‘03

TPCMaintenance 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


Installation Review

March ‘03

TPCITS Trial Assembly

Installation Review March ‘03 TPC Thomas C. Meyer/EP-AIT 1 Pre-installation and Functional Tests...

Documents

Transcript of Installation Review March ‘03 TPC Thomas C. Meyer/EP-AIT 1 Pre-installation and Functional Tests...