# Presentation: 359833

## LHC Hardware Commissioning

- Status and Outlook for the LARP Participation

## LHC Hardware Commissioning

- Preparation & Studies

- After the **qualification for operation of the individual systems** of a sector (vacuum, cryogenics, quench protection, interlocks, powering, etc.),

**each sector will be commissioned as a whole** up to the _powering to nominal current of all the circuits_.

**Validation and specific studies** will be carried-out on the first commissioned sector.

- focus
- availability of components
- description of **individual system tests**
- procedures,
- sequence,
- conditions required,
- schedule
- definition of **hardware commissioning** between all system responsibles concerned
- procedures,
- sequence,
- conditions required,
- schedule
- investigation of **failure scenarios** (AC distribution, cooling and ventilation, vacuum, cryogenic system, cold electrical circuits, interlocks)
- documentation
- minutes of meetings
- description of
- individual system tests
- hardware commissioning procedures
- procedures to be applied in case of failures

## LHC Hardware Commissioning

- The programme

- Basic Assumptions
- 5 day weeks
- two shifts (15 hour days)
- two adjacent sectors
- two fronts at any time in each sector
- generalist operator in the field control room

## LHC Hardware Commissioning

- The headcount

- inventory

- constraints from the installation and machine start-up schedules

- 140 of which ~40 missing

## LHC Hardware Commissioning

- the superconducting electrical circuits

- accent is put on the superconducting circuits but we also have to commission the RF system, the warm magnets, the injection system, the collimator system, the dump system, etc.

**Notes:**
As an example of the “added value” please consider the procedure for the commissioning of the electrical system. Its design has involved the 
PC, 
QPS, 
MPS, 
Energy Extraction, 
Electrical Quality Assurance, 
Cryogenics experts
... and the Commissioning Cordination

## LHC Hardware Commissioning

- Power Converters
- connected to Magnets

- Power Converters
- not connected to Magnets

- connexion of power cables to the current leads

- the electrical systems

**Notes:**
As an example of the “added value” please consider the procedure for the commissioning of the electrical system. Its design has involved the 
PC, 
QPS, 
MPS, 
Energy Extraction, 
Electrical Quality Assurance, 
Cryogenics experts
... and the Commissioning Cordination

## LHC Hardware Commissioning

- The inner triplet assemblies

- RQX.R8
- RD1.R8
- RCBXV1.R8
- RCBXV2.R8
- RCBXV3.R8
- RCBXH1.R8
- RCBXH2.R8
- RCBXH3.R8
- RCSX3.R8
- RCTX3.R8
- RCOSX3.R8
- RCOX3.R8
- RCSSX3.R8
- RQSX3.R8

- ITHL

- ITLL

## LHC Hardware Commissioning

- The field

- ITHL

- ITHL

- ITLL

- ITLL

- ITLL

- ITLL

- ITHL

- ITHL

- LBR

- LBR

## LHC Hardware Commissioning

- The field control rooms

- ITHL

- ITHL

- ITLL

- ITLL

- ITLL

- ITLL

- ITHL

- ITHL

- LBR

- LBR

## LHC Hardware Commissioning

- LARP Participation

- powering tests

## LHC Hardware Commissioning

- Participate in any surface fit up of magnets and dfbx.
- Take the responsibility (design, modifications, manufacturing, follow-up) for the changes to the interconnect kit if needed.
- Help training the contractor in charge of the interconnects and participate to the first interconnects. Follow-up the others.
- Participate in the review of the handling procedures for the final positioning of the USLHC deliverables.
- Participate in the review of the interconnect procedures.
- Advise the survey team in the alignment procedures.

- Mechanical Engineer

## LHC Hardware Commissioning

- Review with CERN engineers the procedures for the cool down of the inner triplet subsector
- Participate in cryogenic connections in the tunnel
- During the cool down of the inner triplet subsector, take part in the operation, monitor the cryo instrumentation, participate to the tuning of the control loops.
- Perform specific tests such as "beam load compensating" cryo heaters, the beam screens, the quench pressure profiles and the heat loads
- Participate in the cryogenic commissioning of the DFBX with HTS power leads (tuning of the lead flows, study of the stability during current transients as well as in steady state conditions)
- Participate in the definition of operation procedures and maintenance plans as well as the management of technical documentation
- During operation with beam, study the effects of beam load on cryogenic performance

- Cryogenics Expert

## LHC Hardware Commissioning

- Participate to the review of the interconnect procedures, with emphasis on electrical aspects
- Participate to the review of the cool down procedure
- Collaborate with technicians involved in electrical quality assurance during assembly and cool down to validate instrumentation and insulation integrities.
- Organize with CERN staff, the connections of the cables to the power leads
- Participate to the review of the procedures for commissioning the electrical circuits
- Participate to the powering tests
- Interpret magnet performance and protection data during quench, ramps, etc
- Act as a conduit for relaying data between US and CERN including quench and magnetic measurements (should largely occur prior to acceptance)

- Magnet Scientist

## LHC Hardware Commissioning

**Installation & Assembly**
- The procedures for the interconnection of IT magnets are expected to be defined by US-LHC and will be applied to the warm fit-up in Q1’05 on the surface.
- Warm electrical quality assurance will be applied to the individual components (HV tests) and to the string which will be electrically connected with temporary means (the busbars will not be soldered).
- Alignment procedures & equipment specific to the IT assembly will also be tested on the warm fit-up.
- The installation of the IT magnets in sector 81 is expected to start in Q4’05.
- The TASs have been delivered and accepted: they are now owned by CMS and ATLAS awaiting installation. The TAN is being looked at by TS-IC and its installation is being studied.

- near future ... 1

## LHC Hardware Commissioning

**Hardware Commissioning**
- The first draft for the procedures for the hardware commissioning of an inner triplet subsector with or without D1 is almost ready for Engineering Check by the authors. It is based on the commissioning of an arc and was refined during several ad hoc and general meetings which took place in the course of the year.
- The task descriptions for US-LARP participation have been prepared; might need refining.
**Head hunting**
- our needs are for
- electrical engineers
- quench protection specialist
- power converter specialist
- 	are ** ***“**probably more than what could be detached from the US labs or that you would be eager to fund in the US-LARP”*

- near future ... 2

## LHC Hardware Commissioning

- getting ready for the commissioning in general and the IT region in particular
- we need experts who will be active in the field
- with experience
- people in the tunnel *getting their hands dirty*
- to be deployed on hardware commissioning
- most critical need in electrical engineering, quench protection, machine interlocks
- we don’t encourage short term (<6 months)
- integrated in the equipment groups commissioning the hardware
- discussions are needed to finalize
- procedures,
- mission at CERN,
- roadmap in general, ...

- ... in summary