totem gas systems ( t1 , t2 )
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Totem Gas SystemsTotem Gas Systems( T1 , T2 )( T1 , T2 )
F. Hahn and F. Hahn and
S. Haider S. Haider PH / DT1PH / DT1
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S.Haider, F.Hahn PH/DT1S.Haider, F.Hahn PH/DT1 22
OutlineOutlineWork packageWork package
General layout and functionality General layout and functionality – Mixer unitMixer unit– Gas Distribution unitGas Distribution unit
Schedule Schedule
Cost estimateCost estimate
ConclusionsConclusions
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Gas system work packageGas system work package
2 gas systems: 2 gas systems: CSCCSC (T1) and (T1) and GEMGEM (T2) (T2)– 2 mixer units 2 mixer units (not for 07 startup)(not for 07 startup)
– 4 UX distribution units4 UX distribution unitsEach endcap 1 rack with 2 distribution units for T1 and T2Each endcap 1 rack with 2 distribution units for T1 and T2
– Pipe work done by TOTEM and/or CriotecPipe work done by TOTEM and/or Criotec
2 control racks: 2 control racks: – 1 in SG and 1 in US for T1 and T21 in SG and 1 in US for T1 and T2– In SG, each system will have it’s own PLC controlIn SG, each system will have it’s own PLC control
User interface in PVSSUser interface in PVSS
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GEM’s (T2) CSC (T1)
Gas:Ar/CO2
70/30
Ar/CO2 (CF4 optional)
50/50 (40/50/10)
Total volume: ~40 litres 400 litres
Total flow: 50-100 l/h 70-200 l/h
Chamber pressure 1 mbar 1 to 3 mbar
Max. overpressure < 10 mbar < 20 mbar
No. of Channels 10 channels/endcap 10 channels per endcap
No. of Chambers 20 per endcap 30 per endcap
No. of Distribution Racks 1 per endcap
General parametersCan we runfrom the CMS CSC mixer?
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MixerModules
Pre- Distribution
PrimarySupplies
Gas Building
USC55 UX Cavern
Detector
SG to UXCpipe length
283 m
UXC-55 to UXpipe length
~ 100 m
03-03-2006 / FH
Gem’s: 2 supply pipesCSC: 2 supply pipesand Purge gas
Exhaust
Exhaust
T1
T2
Schematic overview of the gas systems
Gas Rack situated on HF platform
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PI PT
Exhaust
HV 1201 PICV 1202
1202 1203
YV 1205 XMFC 1206 YV 1207 NV 1211Sampling
PI PT
Exhaust
HV 1101 PICV 1102
1102 1103
YV 1105 XMFC 1106 YV 1107 NV 1111Sampling
PI PT
Exhaust
HV 1301 PICV 1302
1302 1303
YV 1305 XMFC 1306 YV 1307 NV 1311Sampling
PI
HV 1011
YV 1006
YV 1008
FIV 1005
PICV 1007
1007
Sampling
PT1009
Exhaust
Exhaust
PSV 1104
PSV 1204
PSV 1304
Gas 1
Mix
er
PSV 1010
YV 1004
Gas 2
Gas 3
Gas mixing unit(not for ‘07 startup)
T1T1 T2T2Gas 1Gas 1 Ar 50 (40)Ar 50 (40) Ar 70Ar 70
Gas 2Gas 2 COCO22 50 50 COCO22 30 30
Gas 3Gas 3 CFCF4 4 - (10)- (10) --
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Comments Mixer ModuleComments Mixer Module
Both Mixer staged until second year of Both Mixer staged until second year of LHC running.LHC running.
In the first year:In the first year:– T1: Gas could be taken from CMS mixer Gas could be taken from CMS mixer ?
(I have contacted OleG P. no reaction for the moment…)
– Otherwise one could use pre-mixed bottles like for T2.
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HV 6141 PCV 6121YV 6123
CoBack-up
gas
2
YV 6171 FIV 6173PCV 6176HV 6178
6175
PI
Processgas
xBUB 6174
1234PT
6124PI
6124To USC55
CSC (10 Channels)
UX Cavern
HV 6141 PCV 6121YV 6123
CoBack-up
gas
2
YV 6171 FIV 6173PCV 6176HV 6178
6175
PI
PurgeGas
Processgas
HV 6153 PCV 6151
xBUB 6174
1234PT
6124PI
6124To USC55
GEM (10 Channels)
FIV
6154/1F
IV 6154/2
UX distribution unit for T1 and T2
Altogether there will be two racks of this type, one for each endcap.
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~3 m
T2 telescope 5 planes with 2 x 3 chambers
Gas System: 3 chambers (on the same plane) are connected to one common gas supply
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Pipe connections for T1 and T2UX distribution rack (one endcap):
T1
T2
US UX
US-UX supply / returnNote:Return lines 4x Ø =12 mmAnd Analysis lines 4xØ = 6mmAre unused for the moment.Gas exhaust into the cavern!
To / from T2
To / from T1
CO2 line for backup
Analysis lines
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CMSInteractionPoint
T2
T2
T1
T1
UX distributionRack for T1 and T2
Supply lines from USC: through central cable chain underneath CMS
Top view:
flexibles
Gas pipes from Racks to Chambers:T1 : supply 10 * Ø = 4/6 mm Return 10 * Ø =10/12 mmT2 : supply 10 * Ø = 4/6 mm Return 10 * Ø =10/12 mm
Note: Due to infrastructure all pipe runs have flexible parts requiring cable chains, etc.
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ScheduleSchedule
Production:Production:– All material for 2 distribution racks are at CERNAll material for 2 distribution racks are at CERN– Assembly will start beginning of February,- finish Assembly will start beginning of February,- finish
probably March, delivery > April possibleprobably March, delivery > April possible
InstallationInstallation– Cables are procured now Cables are procured now (by CMS / Totem)(by CMS / Totem) and installed and installed
for +Side from May onwardfor +Side from May onward– Gas rack installation will start around June Gas rack installation will start around June – In July, Criotec will install the gas pipes to the UX In July, Criotec will install the gas pipes to the UX
racksracks
CommissioningCommissioning– Probably toward the end of 06 (t.b.c.)Probably toward the end of 06 (t.b.c.)
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Preliminary cost estimatePreliminary cost estimate GEM (T2) CSC (T1)
Gas Supply (special items only) - -
Mixer 17’000 19’000
Pump, purifier, analysis - -
Distribution 22’000 22’000
Aux. Purge included in UX-Distribution
included in UX-Distribution
Piping SG-USA not costed not costed
Piping USA-UXA not costed not costed
Detector Piping not costed not costed
Electrical Control 40,000 40,000
Total material SFr. 79’000 SFr. 81’000
Manpower (racks) 24,000 24,000
Total SFr. 103’000 SFr. 105’000
Mixer willincrease by ~2’000 SFr
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ConclusionsConclusions
The Totem UX distribution racks are well The Totem UX distribution racks are well established in our production line. Mixers established in our production line. Mixers will come later. will come later.
Construction of UX racks has started, Construction of UX racks has started, they will be ready in two months.they will be ready in two months.
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