Cooling LHCb installation workshop, 16 May 2018 Thanks to O. Crespo-Lopez, J. Daguin, M. Doubek, P. Tropea for providing material/slides. 1 / 22
Cooling-related projects and tasks during LS2 Evaporative CO 2 cooling for VELO and UT sensors and front-ends. Novec cooling for SciFi SiPMs. Shared primary chiller for VELO/UT CO 2 cooling and SciFi SiPMs. Demineralised water cooling for SciFi and UT electronics (upgrade of the OT plant). Upgrade of the RICH cooling plant. Dismantle existing IT/TT and VELO cooling plants. T [ ◦ C] (detector) System Coolant Power [kW] VELO Modules CO 2 2 − 30 Electronics mixed water/air 1 . 8 14 UT Staves CO 2 5 − 30 PEPI electronics dem. water 4 . 6 16 Service bay mixed water 12 14 RICH Photon detectors Novec 11 12 SciFi SiPMs Novec 10 − 50 Electronics dem. water 35 16 Detector cooling requirements for the upgraded LHCb experiment. https://twiki.cern.ch/twiki/bin/view/LHCb/LHCbUpgradeCooling 2 / 22
SciFi SiPM cooling system EN-CV Requirements EDMS 1726874 Work Package EDMS 1806622 Reviews 11 May 2017 8 December 2017 CO 2 cooling plants EP-DT Requirements EDMS 1487284 (UT) EDMS 1556963 (VELO) Work Package EDMS 1575817 Reviews 3 December 2015 1 November 2017 CO 2 transfer lines EN-CV Work Package EDMS 1609585 Shared primary chiller EN-CV Requirements EDMS 1726874 (SciFi) EDMS 1851634 (VELO/UT) Work Package EDMS 1870688 Reviews 11 October 2017 RICH cooling system EN-CV Requirements EDMS 1627009 Work Package EDMS 1747707 Reviews 24 May 2017 Demineralised water cooling system EN-CV Requirements EDMS 1845196 (UT) EDMS 1887449 (SciFi) Work package EDMS 1909489 Reviews 3 / 22
Concept of the common chiller for the SciFi Novec and the VELO/UT CO 2 cooling systems (M. Doubek). Transfer line(s) Specifications Integration Procurement Installation Tests CO 2 long-distance EP-DT LHCb TC EN-CV EN-CV EN-CV CO 2 junction box – local box EP-DT LHCb TC LHCb TC LHCb TC LHCb TC + EP-DT SciFi (Novec) EN-CV LHCb TC EN-CV EN-CV EN-CV RICH EN-CV LHCb TC EN-CV EN-CV EN-CV Transfer lines: who does what? 4 / 22
MAUVE (Multiple cooling Apparatus for UT and VELO Experiment) 90% of the components received. Frames and insulation boxes. Couple of fittings from ROTAREX. 85% of the tubing welded. Assembly on the frames will start beginning of June. First pump running on baby-demo set-up for two weeks without problems. Second pump will be installed on the set-up mid May. Trainee hired for three months (summer) to complete the alcove integration 3D model. Junction box connected to the TIF plant in building 186 for cold tests. MAUVE plant commissioning will start in building 153 in summer. Logic for back-up functioning: study ongoing. Missing items: ∆ p of detectors → design of local boxes. Integration of transfer lines from junction box to detectors. J. Daguin 5 / 22
SciFi Novec plant Main ball valves have been ordered after price enquiry. Procurement of the other components will start in the coming weeks. Including the fluid (1100 + 300 l Novec 649). The plant will be built at CERN in the EN-CV workshop, starting in September. Power [kW] 9.7 Pressure drop [bar] 4 Coolant temperature range [ ◦ C] [-50, +60] Temperature stability [K] ± 0 . 5 Parameters of the SciFi Novec cooling system. Shared primary chiller Price enquiry will be sent out in May 2018. Delivery is planned for February 2019. 6 / 22
RICH cooling plant Main components to be upgraded: pumps, heat exchanger, electrical cabinet, controls. Fluid: Novec 649 (instead of C 6 F 14 ). Half of the total cost. Parameter RICH1 RICH2 Flow rate [m 3 / h] 1.45 0.85 Power [kW] 2 × 3 . 5 2 × 2 . 1 Temperature [ ◦ C] 11 Inlet pressure [bar] at detector 3 Demineralised water cooling plant Main components to be upgraded: pumps, heat exchanger, electrical cabinet, controls. Primary cooling: chilled water (instead of mixed water). Parameter Existing (OT + PS) Upgrade (SciFi + UT) Temperature [ ◦ C] 19 16 Power [kW] 23 (OT) + 7 (PS) 35 (SciFi) + 4.6 (UT) M. Doubek 7 / 22
UXA-C3 UXA-C2 UXA-E4 8 / 22
Preparatory works in UX85 before LS2 Installation of long-distance CO 2 transfer lines and cables. � Modified platform for access to UXA-E4. � Ventilation in UXA-E4. � CO 2 detection in UXA-E4. Refrigerant and compressed air lines between UXA-C3 and UXA-E3/E4. Installation schedule during LS2 This presentation covers the installation/dismantling of the cooling plants and transfer lines (up to the near-detector manifolds). Additional installation activities (under subdetector responsibility) include vacuum lines and pumps for SciFi Novec cooling, VELO and UT local boxes, on-detector parts of the cooling systems. Schedule for cooling plants on UXA-C2/C3 should follow the sequence dismantling → RICH/OT plant upgrades → SciFi plant → common chiller. 9 / 22
Activity Where Move VELO racks UXA-C3 Prepare dismantling of VELO plant and IT+TT plants. UXA-C2/C3 In parallel: open shielding wall December 2018 10 / 22
Activity Where Who Remove existing VELO plant and IT+TT plants UXA-C2/C3 Nikhef, EN-CV, EN-HE Install power distribution for MAUVE CO 2 plants UXA-E3 EN-EL Remove VELO lines in VELO alcove and on balcony UXB LHCb TC Remove VELO lines and install SciFi Novec lines in TX84 UXB EN-CV In parallel: remove beam pipe January 2019 11 / 22
Dismantling of VELO and IT+TT plants A detailed work package procedure has been prepared by M. Hatch (EDMS 1968334). The work will be done by NIKHEF, EN-CV, transport team and LHCb TC team. A dedicated “canne ` a pˆ eche” is being designed and constructed by EN-HE. The same tool will be used for the installation of primary chiller and SciFi plant. 12 / 22
Transfer lines along the TX84 vault. The work will be done by a contractor, supervised by EN-CV, supported by LHCb TC. Access using scissor lifts. Detailed work package procedure to be prepared. 13 / 22
Activity Where Who Modify mixed/chilled water pipes and transfer lines UXA-C2/C3 EN-CV Modify power distribution UXA-C2/C3 EN-EL Install MAUVE CO 2 plants UXA-E3/E4 EP-DT, EN-HE, LHCb TC Install MAUVE junction box UXB EP-DT, EN-HE, LHCb TC Remove VELO lines and install SciFi Novec lines in TX84 UXB EN-CV In parallel: Remove IT and VELO February 2019 14 / 22
Installation of MAUVE plants A detailed installation procedure has been prepared by J. Daguin and O. Jamet. The work will be done by EP-DT, transport team, LHCb TC team. 15 / 22
Activity Where Who Upgrade RICH plant and OT (demineralised water) plant UXA-C2 EN-CV Remove VELO lines and install SciFi Novec lines shielding wall, UXA EN-CV In parallel: remove OT, M1, RICH1 March 2019 16 / 22
Activity Where Who Install SciFi plant UXA-C2 EN-CV, EN-HE Remove IT (and TT) lines. Remove IT manifolds UXB EN-CV Remove existing and install new RICH2 lines UXB EN-CV In parallel: remove RICH1, PS/SPD April 2019 17 / 22
Activity Where Who Install shared primary chiller UXA-C3 EN-CV, EN-HE Install SciFi Novec manifolds UXB EN-CV Install SciFi Novec lines under the magnet and below the balcony UXB EN-CV In parallel: remove PS/SPD, TT May 2019 18 / 22
Activity Where Who Remove existing and install new RICH1 lines UXB EN-CV In parallel: remove PS/SPD, RICH2 June 2019 19 / 22
Activity Where Who Install CO 2 lines between MAUVE junction box and VELO/UT UXB LHCb TC Install demineralised water lines between manifold boxes and UT UXB EN-CV In parallel: remove RICH2 July 2019 20 / 22
2019 2020 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 MAUVE TLs JB – VELO/UT Local boxes Common chiller SciFi Novec RICH Demin. water Installation and connection to local services Standalone commissioning Commissioning with primary chiller/other plants Commissioning with detector P. Tropea 21 / 22
Dry gas needs Dry air Flushing of UT PEPI enclosures. “Very dry air” Dew point − 70 ◦ C. CO 2 and SciFi cooling systems (flushing, valves). Flushing of SciFi cold boxes. Plan A: global upgrade of Point 8 production. Plan B: dedicated driers to be installed in UX85A. Decision to be taken in October 2019. N 2 RICH, UT (detector box), and VELO (safety system). One more thing: primary cooling maintenance during LS2 Cooling tower and SU/UW maintenance in 2020 (week 7 – 24). 400 kW backup chiller will be installed. 22 / 22
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