Ernesto, Roberto PH-DT-DI gas service 1
GIF++ gas systems
11/07/2014
Ernesto, Roberto PH-DT-DI gas service 2
neutral gases: tot 9 lines ▫ Ar, CO2, N2, He, SF6, CF4 and 3 spare pipes▫ Distribution panels: 4 gas service area + 1 preparation zone
flammable gases or gases with very low vapour pressure: tot 6 lines▫ iC4H10, CH4, Ar/H2(optional), C2H2F4 and 2 spares. Lines and room heated.▫ Distribution panels: 1 gas service area (flammable gases)
1 normal exhaust 1 exhaust for potentially flammable mixtures
11/07/2014
Gas supply
Ernesto, Roberto PH-DT-DI gas service 3
At full capacity the gas mixing zone will contain ▫ 6 mixing racks▫ 3 closed loop gas systems ▫ 2 analysis racks ▫ 1 control rack▫ 5 spare racks
Gas analysis: ▫ 1 O2 and H2O analysis rack (LHC design: automatic
scan between all gas streams selected. ▫ Gas chromatograph will be integrated in the O2-H2O
analysis rack. ▫ 1 Infrared analysis rack for monitoring iC4H10
concentration in cosmic trigger. ▫ Hardwired interlock signal to stop the system will be
send in case problem (DSS)
11/07/2014
Gas service area
Ernesto, Roberto PH-DT-DI gas service 4
Start-up version:▫ 2 mixing racks (cosmic and beam trigger)▫ 1 closed loop gas systems (cosmic trigger ?) ▫ 2 analysis racks ▫ 1 control rack
11/07/2014
Gas service area
Construction procedure/design as for LHC gas systems
Ernesto, Roberto PH-DT-DI gas service 5
• Gas mixture distribution: Each distribution panel: 6 supply (outer diameter 8 mm) and 6 return (outer diameter 10 mm).
The gas distribution is divided in:▫ panels for neutral mixtures (type A) ▫ panels for mixtures that might contain flammable gases (type B).
Gas service area ▫ 6 panels type A ▫ 2 panels type B
Irradiation bunker ▫ 6 panels type A ▫ 2 panels type B
Preparation area▫ 3 panels type A ▫ 1 panels type B
11/07/2014
Gas mix distribution
Construction on-going
Ernesto, Roberto PH-DT-DI gas service 611/07/2014
Gas mixers Remote control and monitoring. All info available on DIP through GCS and GppCS
Ernesto, Roberto PH-DT-DI gas service 711/07/2014
Gas distribution panels
Ernesto, Roberto PH-DT-DI gas service 8
Gas supply panel neutral gases 80 cm x 40 cm x 35 cmIR CL
2
CL1
CL3
Spar
esup
sup Gas supply panel flammable gases 80 cm x 40 cm x 35 cm
sup sup
11/07/2014
mixsup
Mix
1
Mix
2An
al
Ctrl
Mix
3
Spar
e
sup
Spar
e
Spar
e
mix mix mix mix
RPC1
RPC2
TGC1
Spar
e
supmix mix mix
mix mix Mixture distribution panels 60 cm x 30 cm x 35 cm
Gas service zone – final layout
iC4H10, R134a, SF6
nC5H12, CH4, CO2
Detection nC5H12Detection CH4
Detection iC4H10
Ernesto, Roberto PH-DT-DI gas service 1011/07/2014
mix mix mixmix sup
Preparation zone– final layout
iC4H10, nC5H12
Detection nC5H12Detection CH4
Detection iC4H10
Mobile head Mobile head
Ernesto, Roberto PH-DT-DI gas service 1211/07/2014
Irradiation bunker– final layout
TGC – nC5H12TGC – nC5H12
iC4H10, nC5H12, CH4, R134a, SF6
iC4H10, nC5H12, CH4, R134a, SF6
Detection nC5H12Detection CH4
Detection iC4H10
Mobile headMobile head
Ernesto, Roberto PH-DT-DI gas service 1311/07/2014
Irradiation bunker
TGC – nC5H12TGC – nC5H12
iC4H10, nC5H12, CH4, R134a, SF6
iC4H10, nC5H12, CH4, R134a, SF6
Detection nC5H12Detection CH4
Detection iC4H10
Mobile head
Ernesto, Roberto PH-DT-DI gas service 1411/07/2014
Conclusions – start-up version
First version to start-up the facility:
1. 20 distribution panels2. Simplified version of control rack (basic functionality like connection to remote pvss
interface for recording flows, gas systems status, …)3. 2 gas mixing racks for the fixed installations (beam and cosmic trigger setups). Any
additional mixer for users will cost about 15 kCHF (not included in the present list).4. 1 IR analysis rack (needed to operate cosmic trigger gas system). 5. 1 analysis rack (O2+H2O+ gas chromatograph). 6. 1 closed loop gas system.
R. Guida CERN/PH-DT-DI 15
Small recirculation systemsTwo small systems developed: Prototype used at GIF (2003)
New simplified version for lab R&D (2012-2014)
26/6/2014
Ernesto, Roberto PH-DT-DI gas service 1611/07/2014
Gas systems – future upgrades
Many possibilities for future upgrades to be discussed with users for resources:1. Upgrade control rack for more units (mixers, analysis, re-circulation systems, … )2. Additional IR analysis rack for second mixer using flammable gas3. 3 mixers for users (15 kCHF each)4. 3 new gas recirculation systems for users5. Install more distribution panels (?)