Totem Gas Systems ( T1 , T2 )

Totem Gas SystemsTotem Gas Systems( T1 , T2 )( T1 , T2 )

F. Hahn and F. Hahn and

S. Haider S. Haider PH / DT1PH / DT1

07/03/2006 TOTEM Engeneering De07/03/2006 TOTEM Engeneering Design Reviewsign Review

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



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



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?



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



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


PI PT

Exhaust

HV 1301 PICV 1302

1302 1303


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) --



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.



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.



~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



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



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.



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.)



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



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.

Totem Gas Systems ( T1 , T2 )

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