LHCb CO 2 cooling meeting Updates from VELO
LHCb CO 2 cooling meeting Updates from VELO Wiktor Byczynski on behalf of VELO team
Outline § Detector Flow and ΔP § ΔT(CO 2 - silicon) § Temperature sensors § Installation and commissioning schedule 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 2
Detector Flow and ΔP Slide: 04 Slide: 05 UT purity status LHCb VELO Detector Cooling Requirements 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 3
![Module Power Edgar Lemos Cid Normal Operation Module Power (calculated) : 22. 51 [W]](http://slidetodoc.com/presentation_image/23f80efc2dd2b5d53ecb651440f96114/image-4.jpg "Module Power Edgar Lemos Cid Normal Operation Module Power (calculated) : 22. 51 [W]")
Module Power Edgar Lemos Cid Normal Operation Module Power (calculated) : 22. 51 [W] Expected power on sensors due to radiation damage 1[W] per each Expected Module Power: ~ 27 [W] MOD_75 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 4
![Detector Flow and ΔP Nominal flow: 0. 4 [g/s] • Measurements (CERN 2018) •](http://slidetodoc.com/presentation_image/23f80efc2dd2b5d53ecb651440f96114/image-5.jpg "Detector Flow and ΔP Nominal flow: 0. 4 [g/s] • Measurements (CERN 2018) •")
Detector Flow and ΔP Nominal flow: 0. 4 [g/s] • Measurements (CERN 2018) • Realistic Mock-up (Details slide 06) 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 5
Detector Flow and ΔP ΔP 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 6
Detector Flow and ΔP – open questions Operating 2 cooling substrates in parallel measured at CERN in 2018 Operation of 26 cooling substrates in parallel in final system not measured. Size of the orifice has to be checked and if necessary optimize. In case of smaller orifice size expected extra DP 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 7
Detector Flow and ΔP – open questions Differences in cappilaries lenght betwen A & C side A side input length = C side output length A side output length = C side input length ΔP 1 = ΔP 2 ? 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 8
Detector Flow and ΔP – open questions ΔP 1 Local Box ΔP 2 Junction Box https: //edms. cern. ch/document/2210852/1 Input line ID 6[mm] Return line ID 8[mm] 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 9
Detector Flow and ΔP – open questions 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 10
Detector Flow and ΔP – open questions 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 11
Outline § Detector Flow and ΔP § ΔT(CO 2 - silicon) § Temperature sensors § Installation and commissioning schedule 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 12
![ΔT(CO 2 - silicon) – CERN 2018 Temperature [°C] Sensor Tip Inlet Heater Outlet](http://slidetodoc.com/presentation_image/23f80efc2dd2b5d53ecb651440f96114/image-13.jpg "ΔT(CO 2 - silicon) – CERN 2018 Temperature [°C] Sensor Tip Inlet Heater Outlet")
ΔT(CO 2 - silicon) – CERN 2018 Temperature [°C] Sensor Tip Inlet Heater Outlet Inlet ΔT =~8 [°C] Nominal flow: 0. 4 [g/s], Power 30 [W] 07/10/2019 Flow [g/s] LHCb CO 2 cooling meeting - Wiktor Byczyński ASIC Tip Outlet Heater 13
ΔT(CO 2 - silicon) – 2019 MRD 07 at CERN MRD 05 at Manchester CLI Tip – PT 100 -32 deg: reference temp NTC on hybrid: -24. 2 [°C] +15 deg: reference temp NTC on hybrid: 17. 7 [°C] 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 14
ΔT(CO 2 - silicon) – Band gap 2019 ASICs temp CERN, MRD 07, Flow = 0. 2 [g/s], Tacc -32 [°C] -26. 5 [°C] NTCs -24 [°C] -25. 5 [°C] • Use absolute temperature registered per each Asic and NTC for the power scenarios • Made a linear fit of the temperature versus module power • Normalise the point to the fit result • Extrapolate to (0, 0) • Register temperature values for at least 1 min and take the mean and std value over 1 min Claudia Bertella 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 15
ΔT(CO 2 - silicon) – Band gap 2019 ASICs temp Nikhef, MRD 07, Flow = 0. 4 [g/s], Tacc -35 [°C] -28 [°C] X[°C] NTCs -26 [°C] -27 [°C] • Use absolute temperature registered per each Asic and NTC for the power scenarios • Made a linear fit of the temperature versus module power • Normalise the point to the fit result • Extrapolate to (0, 0) • Register temperature values for at least 1 min and take the mean and std value over 1 min Krista De Roo 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 16
Outline § Detector Flow and ΔP § ΔT(CO 2 - silicon) § Temperature sensors § Installation and commissioning schedule 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 17
Temperature sensors NTCs (independent) PT 100 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 18
![Temperature sensors Detector output temperature Always below -30 [°C] SCADA, Arkadiusz Homa 07/10/2019 LHCb](http://slidetodoc.com/presentation_image/23f80efc2dd2b5d53ecb651440f96114/image-19.jpg "Temperature sensors Detector output temperature Always below -30 [°C] SCADA, Arkadiusz Homa 07/10/2019 LHCb")
Temperature sensors Detector output temperature Always below -30 [°C] SCADA, Arkadiusz Homa 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 19
Outline § Detector Flow and ΔP § ΔT(CO 2 - silicon) § Temperature sensors § Installation and commissioning schedule - Liverpool status 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 20
Backup 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 21
![MC 2 + Return Line ID 1. 2 [mm] ASIC Tip – MC Outlet](http://slidetodoc.com/presentation_image/23f80efc2dd2b5d53ecb651440f96114/image-22.jpg "MC 2 + Return Line ID 1. 2 [mm] ASIC Tip – MC Outlet")
MC 2 + Return Line ID 1. 2 [mm] ASIC Tip – MC Outlet (Flow) ASIC Tip – Detector Output (Flow) ΔT [°C] Flow[g/s] ΔT = ~7. 8[°C] Flow[g/s] ΔT = ~9. 5[°C] Capillary return line lost (for 0. 4 [g/s]): 1. 7 [°C] 07/10/2019 LHCb CO 2 cooling meeting - Wiktor Byczyński 22
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