# Presentation: 000289

## The Commissioning of the Technical Systems of LHC

- The final validation that all the collider components/systems perform as specified.
- All the tests are performed without beam.
- The sectors under test are fully installed but installation is going on in other sectors.
- Also, tests are going on in other sectors.

- Félix Rodríguez-Mateos, CERN-TS

## the mandate

- commissioning
- coordination

- equipment
- groups

- infrastructure
- groups

- operation
- & controls
- groups

- cryogenics

- electricity

- magnet

- collimators

- rf

- beam
- transfer

- instrumentation

- quench
- protection

- cooling &
- ventilation

- access
- control
- & safety

- interlocks

## the logic

- all systems ready for
- machine check out

- Hardware Commissioning Coordination with System Owners define and carry-out

- Sytem owners
- define and carry-out

## preparation

- the scope
- all the accelerator systems in the LHC tunnel with particular emphasis to superconducting circuits

## preparation : software

- requirements

- prototypes

- x 15

- sacec : software applications for the commissioning of the electrical circuits

- QPS
- Power Converters
- Powering Interlock

- Documents on PMA tools
- requirements being prepared
- at present

## the number of simultaneous work fronts

- FCR1		FCR2		UJ or RR	CCC

- 1 SCT

- 				1 SCT

- 						1 SCT

- 2 PT		2 PT				1 SCT

- 2 PT		1 SCT

- 2 PT				1 SCT

- 2 PT						1 SCT

- 2 PT					       2 PT + 1 SCT

- 					 2 PT + 2 PT + 1 SCT

- August 2006

- February 2007

- 2 PT = powering tests in two adjacent sectors

- 1 SCT = short circuit tests of one powering area

- 9 fronts

- 5 fronts

- 1 front

- front = instance of the sequencer running

## the as designed documentation

- the *as designed* documentation

- all systems ready for
- machine check out

- EDMS

## HCP in circulation for engineering check

|  |  |
| --- | --- |
|  |  |

| LHC-D-HCP-0004

 | The Commissioning of the Inner Triplet Region  |
| --- | --- |
| Esther Barbero Soto
Davide Bozzini
Paul Cruikshank
Reiner Denz
Bruno Puccio
Félix Rodríguez Mateos
Rüdiger Schmidt
Luigi Serio
Hugues Thiesen
Markus Zerlauth | This document describes the sequence of the steps which lead to the commissioning of the complete inner triplet. It gives the backbone of the general procedures and refers to more detailed documents associated to the different systems, which in turn describe the individual system tests and the hardware commissioning procedures.  |

## the as tested documentation

- the *as tested* documentation

- all systems ready for
- machine check out

- MTF

##  the sequence

- 1

- 2

- 3

- 4

## personnel underground 

_**in the field **__**	**__**on call**__**	**__**	**_
- 	cryogenics operation
- 	cryogenics instrumentation
- 	quench protection
- 	machine interlocks
- 	power converters
- 	coordination
- 	controls
- 	operation

*o*	operator
*x*	expert
*e*	engineer
*t*	technician

**22 present in the field**

- Front 1 	arc and the matching section on the even side
- Front 2 	arc, the matching section on the odd side and the inner triplets on both sides

**two shifts = 15 hour days**

- resources deployed for the powering tests

## the sequence of tests around an even point

- Powering Tests

## the field

- 	~210	cold circuits
-  	190 	orbit corrector circuits
- 	~10 	warm circuits

## the field control room

- DFBs

- Field control room

- UA 83 – Left of Point 8

- Power
- Converters

- Energy
- Extraction
- Systems

- + wi-fi coverage of the UA
- + printer

- + social corner
- + water fountain

- + desks
- + meeting table
- + lockable closets

## the first commissioning

## the phases

## superconducting magnet circuits

- Power Converters
- connected to Magnets

- Power Converters
- not connected to Magnets

*connexion of power cables*
*to the current leads*

## powering of the superconducting magnet circuits

| HCA:PIC2 | Stand-by current | to commission the protection functionalities of the powering interlock controllers and all its connected systems with current through the circuits 
to verify the compatibility of the switch-on and switch-off processes of the converters with the sensitivity of the protection systems (namely QPS)  |
| --- | --- | --- |
| HCA:PLI1
HCA:PLI2
HCA:PLI3
HCA:PLI4
 | Injection level
20% of Inom
50% of Inom
80% of Inom | to set up the power converter current loops
to verify the cooling control of the current leads
to validate the protection mechanisms under real powering conditions and with limited amount of energy in the circuits
to validate quench-related procedures, e.g. cryogenic recovery procedures
to validate the sensitivity and compatibility during ramps of the systems susceptible to noise pick-up, couplings, etc
to perform a last check on the polarities of the circuits by verifying voltages across current leads (at low current using QPS signals)  |

- 1/2

- 

- 

- 

- 

## powering of the superconducting magnet circuits

| HCA:PNO | Nominal current | to verify that the power converters work correctly during the ramp of the current
to verify the cooling control of the current leads
to calibrate the DCCTs for the main power converters and the Inner Triplet power converters and to verify that the calibration systems work correctly
to validate the protection mechanisms under real powering conditions and with nominal energy in the circuits
to verify the quench current level of each circuit
to validate quench-related procedures, e.g. cryogenic recovery procedures  |
| --- | --- | --- |
| HCA:PAC
 | Nominal current
(all circuits of a sector) | to verify the tracking of the current
to verify thermal performance of the ventilation and water cooling systems in underground areas
to have a 24-h reliability run in order to detect premature failures due to wrong settings or possible assembly errors  |

- 2/2

- 

## HCP in circulation for approval

|  |  |
| --- | --- |
|  |  |

| LHC-D-HCP-0003

 | Powering of the Superconducting Circuits of a Sector up to Nominal Current
 |
| --- | --- |
| Amalia Ballarino, Davide Bozzini
Knud Dahlerup-Petersen
Reiner Denz, Robin Lauckner
Bruno Puccio, Félix Rodríguez-Mateos 
Roberto Saban, Rüdiger Schmidt
Luigi Serio, Hugues Thiesen
Antonio Vergara, Markus Zerlauth  | This document describes the sequence of the steps which lead to the powering of the superconducting circuits of a powering sub-sector to nominal current. It covers the phases after the connection of the power cables to the current leads up to the powering in unison of all the circuits of a sector to nominal current.  |

## failure scenarios

- failure scenarios during the commissioning were studied
- the objective** **was to** **define strategies for at least a few case studies per major system in order to gain in reactivity at the time of failures
- evaluate the impact on the program and
- define alternatives to carry-on
- six sessions of the HCWG were devoted to this study:
- Superconducting Electrical Circuits
- Cooling and Ventilation System
- Cryogenic System
- Vacuum System & Leak Tests
- Electrical Power Distribution
- Power Interlock Controllers

## HCP in circulation for engineering check

|  |  |
| --- | --- |
|  |  |

| LHC-D-HCP-0006

 | Failure Scenarios for the Electrical Circuits  |
| --- | --- |
| Davide Bozzini
Reiner Denz
Knud Dahlerup-Petersen
Hugues Thiesen
Antonio Vergara
Markus Zerlauth | This document describes the failure scenarios for the Electrical Circuits which are relevant during the Hardware Commissioning. The objective is to identify show stoppers and define the strategies to repair, recover or do with them.  |

## Thanks for your attention...