mats wilhelmsson cern april 2004 - desy water cooling concept.pdf · mats wilhelmsson cern ......

Desy workshop Desy workshop 20.04.2004 20.04.2004

April 2004

Mats Wilhelmsson CERN

Water Cooling for the LHCWater Cooling for the LHC


Content :

CERN- The Large Hadron Collider

THE Recovery/transformation of LEP

LHC-Users for water cooling

Water cooling systems for the LHC-Raw- and primary water systems-Demineralised water systems-Chilled- and mixed water systems

Reject water

Controls


1 8

23

4

5

67

LHC

Meyrin

From LEP to LHC


The LEP TunnelThe LEP Tunnel


RecoveryRecoveryofofLEP LEP MagnetsMagnets


The LHC TunnelThe LHC Tunnel


The LEP tunnelThe LEP tunnel

P1

SPS

P2

P3

P4 P5

P6

P7

P8


The LHC tunnelThe LHC tunnel

P3

SPS

CMS

LHC-B

ATLAS

ALICE

P4P5

P6

P7

P8P1

P2


The LHC tunnelThe LHC tunnel


LHC Experimental site (point 8) LHC Experimental site (point 8)


Consumers of water coolingConsumers of water cooling


Cooling the LHCCooling the LHCMain consumersMain consumers

Cryogenic installationsCryogenic installations


Cooling the LHC:Cooling the LHC: Cryogenic installationsCryogenic installations


Electric power supplies (power converters)Electric power supplies (power converters)

Cooling at LHCCooling at LHCMain consumersMain consumers


Warm magnetsWarm magnets


Cooling at LHC Cooling at LHC consumersconsumers

Air treatmentAir treatment


Cooling at LHCCooling at LHCMain consumersMain consumers

The LHCThe LHCDetectorsDetectors


Heat recovery

Cooling towers

Water chillers

SurfaceUnderground

Raw waterRaw water

LHC Raw water cycleLHC Raw water cycle Rejects


Raw water Raw water pumps point 4pumps point 4


Heat recovery

Cooling towers

Water chillers

SurfaceUnderground

The LHC cooling chainThe LHC cooling chain

Compressed air


The LHC Cooling systemThe LHC Cooling system


Primary water circuit

MAIN CHARACTERISTICS

Temperature at the cooling towerOutlet

24°CInlet

34°CSet point 23°CTolerance ± 1°C

Available pressure difference for each user 3 bar


Primary Circuit Point 1


LHC Cooling towersLHC Cooling towers

CaracteristicsWater T 24/34°C

Wet bulb T 20°C

DESSIN


Cooling tower at LHC point 4Cooling tower at LHC point 4


Heat Heat exchangerexchanger

primary primary system system point 4point 4


Demineralised water circuits


Demineralised waterDemineralised water

LHC CoolingLHC Cooling

Water resistivity

1) Production resisitivity = 10-20 MΩ*cm (Corresponding to conductivity 0.1 -0.05 µS/cm)2) Operational resistivity = between 3 and 1 MΩ*cm3) Alarm resistivity lower than 0.8 MΩ*cm


Heat exchanger/primary& Heat exchanger/primary& demineralised circuitdemineralised circuit


Point 32

Point 2

Point 1

Point 4 Point 5

Point 6

Point 7

Point 8

SECTOR 3-4

SECTOR 2-3

SECTOR 1-2 SECTOR 8-1

SECTOR 6-7

SECTOR 5-6

SECTOR 4-5

Point 33

SPS

RE28

RE32

RE38

RE42

RE48 RE52

RE58

RE62

RE68

RE72

RE78

RE82

RE88

RE12

RE18

RE22

STCV- 2001/ 01 1_vue_gen.dsf FOLIO xx

SECTOR 7-8

Machine circuit – demineralised water


Tunnel Tunnel pipespipes


Chilled and Mixed waterPoint 5


Chilled / Mixed waterChilled / Mixed water

Temperatures:

Chilled water: 5/11 °CMixed water : 13/18 °C


Clean and waste water


Clear water reject


Cooling equipmentCooling equipment

Cooling towers 25 50Chilled water plants 9 12Pumping stations 12 42Pipes length (km) 520 1200Pumps 120 540Air compressors 22 50

LHC CERNLHC CERN


ControlControl architecturearchitectureMONITORING - SUPERVISION

CM:/180898/SPVSARCH001.dsf

automate programmableprogrammable controller

PC - superviseurPC - supervisor

PC - portablePC - labtop

onduleursafe current

carte TCP/IPTCP/IP card

prise bus terrainFieldbus socket

connexion bus terrainfieldbus connexion

NiveauLevel

3Meyrin

Ethernet Services

TCP/IP

Eth

erne

t S

ervi

ces

TC

P/IP

SALLE DE CONTROLETECHNICAL CONTROL ROOM

CERN MEYRIN

ARCHIVAGESTORAGE

CERN MEYRIN SUPERVISION CENTRALECERN MEYRIN

NiveauLevel

2SU buildings

NiveauLevel

1LHC buildings

Bus de terrain Soft 1+2

BD

Soft 1+3

soft 3Soft 3+5

BD Soft1+3+4

SUPERVISIONPoint 5

SUPERVISIONPoint 8

SUPERVISIONPoint 1

WebWEB +

TDS

X te

rmin

al BDTDS

BD

armoire électriqueelectrical cubicle

Modbus

7 SUPERVISEURS LOCAUX

Ethernet Bureautique- NOVELL

Ethernet Services

TCP/IP

E therne t S ervices

T C P /IP

Soft1+3+4 Soft

1+3+4

Ethernet Services TCP/IP

téléphoneportable téléphone

portabletéléphoneportable

soft 6

UIAC




Level 3Level 3CENTRALCENTRAL

SUPERVISIONSUPERVISION

Level 2Level 2LOCALLOCAL

SUPERVISIONSUPERVISION

Level 1Level 1PLC/PLC/

instrumentationinstrumentation


Layer 3: TCR remote monitoring

CER

N Ethernet TC

P/IP Technical Netw

ork

Layer 2: Inter-point communication and local process supervision

I/O rack #1 I/O rack #i I/O rack #n

Master (S7 PLC)

Layer 1: Process control

Wizcon local supervision

IM IM IM

PLC #1 PLC #i PLC #n

Profibus

Layer 3: TCR remote monitoring

CER

N Ethernet TC

P/IP Technical Netw

ork

Layer 2: Inter-point communication and local process supervision

I/O rack #1 I/O rack #i I/O rack #n

Master (S7 PLC)

Layer 1: Process control

Wizcon local supervision

IMIM IMIM IMIM

PLC #1 PLC #i PLC #n

Profibus


Local supervision Local supervision


Level 3Level 3Central supervision Central supervision -- TCR (TCR (MeyrinMeyrin))

24/24h - 365 days per year2 teams, 14 operators30 000 alarms100 000 variables


LHC recovery & environmentLHC recovery & environment

mats wilhelmsson cern april 2004 - desy water cooling concept.pdf · mats wilhelmsson cern ......

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