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2. Road to the EDR 2 Requirements Safety system Transfer line concept Plant concept design Requirements Evaporator concept and performance Transfer line concept Redundancy concept P&ID FA Engineering Design Review Velo UT Evaporator concept and performance Towards the cooling plant EDR

3. Redundancy approach How to make the system fully redundant? – Taking into account: Simplicity (both use and production) Rely on past experiences Cost Minimal interference between UT and Velo operation. – Basic idea: 2 identical plants with over capacity Use 1 plant for Velo and UT together in case 1 system is out of order (in case of maintenance or problems) – First a basic concept must be worked out How to use the chiller? – Dedicated or shared ?  We will share the chillers between the two plants – Air-cooled / water cooled  We will have a water-cooled chiller with air-cooled as back-up How to interlink the CO2 units – Mixing up content of 2 systems, influencing filling content – How to separate?  interconnect close to the detector when in back-up mode 3 Redundancy approach

4. Preferred Option: 1 chiller for both plants (+spare), inter connection near detector 4 B B Shielding wall Velo UT

5. Redundancy approach How to make the system fully redundant? – Taking into account: Simplicity (both use and production) Rely on past experiences Cost Minimal interference between UT and Velo operation. – Basic idea: 2 identical plants with over capacity Use 1 plant for Velo and UT together in case 1 system is out of order (in case of maintenance or problems) – First a basic concept must be worked out How to use the chiller? – Dedicated or shared – Air-cooled / water cooled How to interlink the CO2 units – Mixing up content of 2 systems, influencing filling content – How to separate? 5

6. 2014 – Q34: Requirement document by VELO and UT 2015 – Q12: Development and definition of evaporator systems – Q23: Concept P&ID Preliminary sizing Control philosophy Redundancy approach – Q3: P&ID document & functional analyses – Oct-Nov 2015: Cooling EDR – Q4 start of design 2016 – Q123 Detailed 3D design of hardware Evaporator, junction box, transfer line, cooling plants – May 2016: Cooling PRR junction box, transfer line – Oct 2016: Cooling PRR cooling plant. – Q4 Production of transfer line and junction box 2017 – Q1 Transfer line and junction box installation (EYETS, 19 weeks) – Q1234 Production of the cooling hardware 2018 – Q12 cooling system installation in UXA (preferred place: A-side alcove) – Q234 Cooling system over junction box commissioning – Q3 start of LS2 – Q4 Removal of current VELO and TT 2019 – Q2 Upgrade VELO and UT installation – Q34 Detector commissioning with cooling – Q4 end of LS2 Updated cooling plant schedule Comments:  The schedule is driven by – the LHC schedule, – the LHCb upgrade plan and – the availability of resources in PH-DT: Design effort in 2015/2016 Construction 2017 Installation and start of commissioning in 2018 6

7. Performance parameters for a C0 2 plant on the surface for assembling and commissioning ParametersunitCMSLHCb Cooling loop max flowg/s1410 Total plant flowg/sMax 2020 Min evaporating T oCoC-25 Max evaporating T oCoC+15 Number of cooling loops#22 Max DP across cooling loopbar<20 Cooling loop max powerW810800 Plant max powerW1500 Transfer line lengthm1815 7 Joint development with CMS To be started in autumn this year Cost between 50-60 kCHF plus manpower (3D design + FSU for controls)

8. 8 New Building Projects at Point 8 A B C D A B C New LHCb Control Room ( ~ 220 m 2 ) + Meeting Room (~ 140 m 2 ) + Offices (~ 80 m 2 ) + new LHC Cryogenic Control Room (~ 55 m 2 ) + Technical rooms (~ 120 m 2 ) - 3 floors (lift 5-6 people) New LHCb Storage Hall – 112 m 2 – crane 7.5 t (for replacing 156 building at Meyrin) New LHCb Assembly Hall & Storage - roughly 485 m 2 – crane 30 t (for replacing hall 156) D Location of the future LHCb servers in containers. E.PEREZ-DUENAS & D.LACARRERE 6 June 2013

9. Status and Plans Cooling specifications: Still waiting for update of VELO and UT specs. (the latter are more advanced)  Let us try to get this out of way asap. Development and definition of evaporator systems: Work in progress.  Check today where we stand with respect to the work plan P&ID document & functional analyses: Work will start when basic issues related to the evaporators are clarified, hopefully by June.  The aim is still to have the cooling EDR in October/November 2015 9

10. Cooling plant location Prefered Location: Alcove PZ85 (VELO side) – About 25-30m 2 are available and easy to access. – Area needs to be equipped with power (EXD, EBD, ESD), network, primary cooling – poor ventilation  Despite some drawbacks, this seems to be the best option. – Additional advantage: The transfer line towards the detector would be straight. Passing the shielding wall looks not too complicated. 10

11. Backup 11

12. Development and definition of evaporator systems II.Design and test of a micro-channel substrate based evaporator for the LHCb VELO 1.address the issues in relation to interconnection and distribution: The design of the evaporator needs to be done from and to the manifold. Arc-welding of pipes between the manifold and the detector modules is not possible ones the electronics are mounted on the module 2.Proper dimensioning of the in- and outlets connecting the detector to the manifold 3.critical safety aspects (the VELO is operated in the secondary LHC vacuum) Safety issues in case of micro-leaks need to be addressed in a coherent way, taking into account that the advantages and disadvantages of safety valves, and the maximum vacuum pressure tolerable for the thinner RF-foil.  Hopefully more input today … 12