LHCb CO 2 cooling meeting VELO detector requirements
LHCb CO 2 cooling meeting VELO detector requirements Burkhard Schmidt January 14, 2015 1
Where do we stand ? • The coordination effort for the C 02 cooling needs of the LHCb upgrade started in May 2014, having as goal the: “Development and construction of a CO 2 plant for the VELO and UT detectors for the LHCb upgrade, in collaboration between PH-DT and the LHCb detector groups. ” • From the beginning we underlined the strong interplay between – – the detector design, the requirements for thermal management the detector control and safety systems and the design of the cooling plant and hence the need for close collaboration between cooling experts and detector development groups is mandatory. • The goal for 2014 has been the documentation of the cooling specifications of the VELO and UT sub-detectors. Ø The UT specification are close to be ready (discussed in Dec 2014) Ø VELO specification discussed today 2
Where do we stand ? • We agreed also to address in parallel the organizational issues in relation to development and construction of the cooling plant. • Behind the scenes much effort went into this. – Unfortunately a solid solution is not in hand yet. – The part PH-DT is ready to take up will be outlined by Paolo later. • Reminder: the design of a cooling system starts with the evaporator system – We are facing special challenges for the VELO detector (micro-channel cooling) see Bart’s presentation for details – The situation for UT is simpler (and the people in charge have been identified). Ø We have to agree urgently who is addressing the challenges on the VELO side and make a clear work plan. • Only when this is sorted out PH-DT can commit to its part in the project. • A work-package will be prepared as soon as the above points have been clarified. 3
Schedule • • 2014 – Q 34: Requirement document by VELO and UT 2015 – Q 12: Development and definition of evaporator systems – Q 23: Concept P&ID • Preliminary sizing • Control philosophy • Redundancy approach – Q 3: P&ID document & functional analyses – – Oct 2015: Cooling EDR – – Q 4 start of design 2016 – – Q 123 Detailed 3 D design of hardware • Evaporator, junction box, transfer line, cooling plants – Oct 2016: Cooling PRR – Q 4 Production of transfer line and junction box 2017 – Q 1 Transfer line and junction box installation (EYETS, 19 weeks) – Q 1234 Production of the cooling hardware 2018 – Q 12 cooling system installation in UXA (preferred place: A-side alcove) – Q 234 Cooling system over junction box commissioning – Q 3 start of LS 2 – Q 4 Removal of current VELO and TT 2019 – Q 2 Upgrade VELO and UT installation – Q 34 Detector commissioning with cooling – Q 4 end of LS 2 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 4
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