Download ppt - 1 st Installation and Commissioning Workshop

6 October 2006 Borge S. Nielsen, Niels Bohr Institute

1st Installation and Commissioning Workshop

Forward Multiplicity Detector(FMD)


Forward Multiplicity Detector (FMD)

FMD 1 FMD 3FMD 2

Outer ring

Inner ring

ITS


Detector elements

Final FMD3 cone withbeam pipe support

Complete module(“outer” type)

Final “Inner” Digitizer

Cone assembly test

Muon absorber cabling


System tests already doneMechanical assemblywith models at CERN

Full read-out tests with Digitizer+RCU+DATE

Beam tests with >5000 active channelsand 2 digitizer cards +1 RCU+DATE


Pre-commissioning• Pre-commissioning plans prior to installation

@NBI: - assemble complete detectors (FMD3 + FMD2, then FMD1)

- complete test with RCU, DDL, DATE, TTC/LTU, cooling

(but not final CAEN LV and HV)

- basic DCS panels, tested on simulated CAEN and real RCU/DCS card

@CERN (Jan-Feb 2007):

- retest as above, but with ‘final’ CAEN power supplies

• Status of pre-commissioning (@NBI)- FMD3 mechanics ~ready, FMD2 starting production

- all detector modules in house

- TTC/LTU being set up

- cooling plates in production

- DCS work starting

- complete read-out working


Electronics & Racks• Locations of racks in the cavern + drawings of rack content including rack

patch-panels and possible communication lines between racks and entry point of cables (top, bottom ?)

- Rack O13 contains one EASY 3000 crate with 48 V power supply etc

one patch panel to distribute the LV cables from 10 digitizers and 3 RCUs to 4 low voltage modules

- Rack X06 contains one SY1527 crate

one patch panel to distribute the HV cables from 70 modules

and 6 high voltage modules

• Schedule for arrival of electronics and individual rack components at CERN.- Power supply crates hopefully early 2007

- Power supply modules before August 2007 – delivery schedule unknown

- Patch panels to be mounted together with cable connectors

• Electronics commissioning

- Power supplies to be installed and commissioned together with FMD3


Detector Arrival @ CERN

Installation dates: FMD3 16-20 February 2007FMD2 07 March 2007FMD1 03-05 July 2007

• When will the detector arrive at CERN ?- before mid January 2007 (FMD3 and FMD2, FMD1 later)

• What are the dimensions of the ‘transport cradle’ that must be brought to the place of installation ? How will it be brought there?- 2 times 1x1x1 m3 by car

• How many people will participate in the installation ? - 6-8 people (physicists and technicians)

• How many days before installation will the team arrive ?- early-mid January for lab. test: 3-4 people- for installation: above + 3-4 people


Cables & Patch panels• Status of cable, fibre and connector ordering.

- C side cables on absorber done, remaining defined but cables not pulled. Fibres not pulled.

- A side ~defined, but missing final cable lengths and final patch panel designs.

• Plans for cabling, connector and cable testing activity by subgroup.- NBI: - cables on absorber and service chariot - all cable connectors

- full cable testing- CERN: - pull long cables and all fibres

• Needed patch panels and status of patch panels.- Still to be done: panels on A side (PP2, PP1, PP0)

panels in racks (LV and HV distributions)


Installation (1)• Minimum status of services at start of installation.

- all cables and fibres ready and tested- LTU/TTC running- DAQ running- CAEN HV and EASY LV crates and ‘some’ modules delivered- preferably cooling water from TPC heat screen system

• Installation tooling provided by the subdetector group.- support for cones during assembly

• Other Infrastructure needed.- full ITS installation infrastructure

• Installation scenario – day by day.- Before installation date: install and cable RCU modules - FMD3: 3 days mechanical installation, then complete test- FMD2: 1 day mechanical installation

1 day (12/03/2007) set aside for complete test after the cable hook-up


Installation (2)• Tests and verifications during installation for cables, fibers

and cooling lines.

- cables etc should be tested before installation

- FMD3 should be verified through to the racks and counting rooms (with DCS and DAQ)

- FMD2 cannot be cabled until TPC is in place

– ideally detector should be tested with the commissioning electronics;

Not clear what is possible with temporary cabling, power etc.

• Alignment requirements- assured at required precision by ITS installation scenario


Commissioning – summary (1)

• Test all detector modules at NBI. – Results stored in systematic fashion. Make list of repairs, send modules to CERN.

• Pre-assembly at NBI– Cables– Shielding (HF and light)– Cooling– Mechanical fit. Detectors, Honeycomb, Digitizer, beam tube support.– Noise tests– RO system w. 2 branches– Calibration pulse test– DCS control software– Monitor software, test and calibration scripts.– Check safety procedures (leakage current, auto shut off at beam injections, etc…)

• Final e-beam test at Aarhus – data taken 4-5 November– Test inner and outer digitizers with. inner and outer detectors.– S/N systematics– Rate dependence– System stability

• Limitations at NBI– Real LV and HV not available

• Final assembly at NBI - December

At NBI:


Commissioning – summary (2)• Detector operation at CERN in Lab. – conditions similar to NBI lab.

– (Re-) Assemble detector system after transport– Connect detectors to LV, HV, and self-generated trigger– Run with stand-alone DAQ – Operate system in lab. Measure noise, stability and rate

• Detector operation at CERN in Lab. – conditions similar to ALICE.– Connect detectors to ‘real’ LV, HV, and trigger – Establish DCS control of hardware– Run with ‘real’ external trigger (LTU/TTC) and real ALICE DAQ– Operate system in lab. Measure noise, stability and rate

• Calibration and Control procedures – Exercise scripts to calibrate (pedestals, gain) and operate detector (start/stop/reset/load) – Exercise first monitor programs– Check stability and rate performance– Check safety procedures (leakage current, auto shut off at beam injections, etc…)

• Preparation in ALICE (in pit) prior to installation– Verify all cables/connectors (long cables and local (PP-to detector) cables)– Availability of trigger signal – Availability of real HV, LV - LV situation problematic due to CAEN delivery schedule– Availability of DCS control – Availability of DAQ

• Installation (3 days for FMD3, 1 day for FMD 2, 3 Days for FMD 1)- Run all scripts repeatedly and measure noise performance for entire system in situ

(Requires HV,LV, Trigger and DAQ, partly DCS)

At CERN:


Commissioning – summary (3)

• Detector operation in ALICE.– Connect detectors to ‘real’ LV, HV, and trigger – Establish DCS control of final hardware– Run with real external trigger (TTC) and real ALICE DAQ– Operate system in ALICE. Measure noise and stability.

• Calibration and Control procedures – Exercise scripts to calibrate (pedestals, gain) and operate detector (start/stop/reset/load) – Exercise first monitor programs– Check stability and rate performance

At CERN post installation: