VELO Thermal Control System (VTCS) Tertiary System Layout at VELO VTCS Left Local Control Box Test-Connection Tertiary vacuum Secondary vacuum TL-VL06 TL-VL03 Vapor mixture return Insulated concentric tube TL-BD01 TL-PT01 TL-PT02 TL-FL2 Liquid in (45) (47) Left TL-VL01 TL-BD02 (46) TL-FL1 TL-VL02 TL-VL04 TL-HX28 (48) TL-PT03 TL-PT08 TL-VL07 TL-VL05 TL-VL09 TL-PT04 TL-HX1 (01) = Tx-TT01 (02) = Tx-TT02 …… (48) = Tx-TT48 Temperature sensor labeling: Primary vacuum Shielding wall Secondary Vacuum TL-BD03 TRL-VL01 Left Tertiary vacuum control TL-HX27 TRL-VL02 Right Tertiary vacuum control TR-HX1 TR-HX27 TR-PT04 50 meter TR-VL09 Secondary Vacuum TR-BD03 TR-BD02 TR-PT03 TR-VL05 TR-VL07 Vapor mixture return (48) TR-HX28 TR-VL08 TR-BD01 TR-PT01 TR-PT02 TR-VL04 Right Liquid in (45) (47) TR-VL01 TR-FL1 (46) Insulated concentric tube TR-VL02 TR-FL2 VTCS Right Local Control Box TR-VL06 TR-VL03 VELO Detector Test-Connection bverlaat@nikhef.nl

Tertiary Vacuum Control 8 x 50 pins Electrical Vacuum feed through connectors VTCS sensor and actuator overview per VELO half Tx-FL01 (47) Tertiary vacuum (36) (48) Tx-BD03 4x Mounting Board (Capacity = 20x PT100 & 2x Heater (2A) per board (34) Tx-PT02 (33) Tx-PT04 Tertiary Vacuum Control (35) Local Control Box Tx-PT03 Heater group Tx-HT01 (6x Watlow K010030c500000) Heater group Tx-HT03 (6x Watlow K010030c500000) Tx-VL02 Tx-VL09 (91) (93) (37,87) (39,89) (46) Tx-PT01 (41) CO2 in and outlet Tertiary vacuum connection to secondary vacuum (42) (45) (38,88) (40,90) Electrical Connector Type: 6 pin LEMO (FGG.OB.306.CLAD52) (92) Heater group Tx-HT02 (6x Watlow K010030c500000) Heater group Tx-HT04 (6x Watlow K010030c500000) (94) (04) (01) (18) (15) (32) (29) Electrical Bulkhead Connector Type: 6 pin LEMO (EEG.OB.306.CLL) (02) (16) (30) (07) (08) (09) (10) (11) (12) (13) (14) (17) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) (31) (01) = Tx-TT01 (02) = Tx-TT02 …… (48) = Tx-TT48 Temperature sensor labeling: (03) (05) (06) TL-HX1 TL-HX2 TL-HX3 TL-HX4 TL-HX5 TL-HX6 TL-HX7 TL-HX8 TL-HX9 TL-HX10 TL-HX11 TL-HX12 TL-HX13 TL-HX14 TL-HX15 TL-HX16 TL-HX17 TL-HX18 TL-HX19 TL-HX20 TL-HX21 TL-HX22 TL-HX23 TL-HX24 TL-HX25 TL-HX26 TL-HX27 (43) (44) bverlaat@nikhef.nl Tx = TL for left detector half and TR for right detector half

Acronyms bverlaat@nikhef.nl Px- = Primary Cooling System (6-12°C Water) Sx- = Secondary Cooling system (R404a chiller) SA = Secondairy A SB = Secondairy B Tx- = Tertiary Cooling System (CO2 system) TL = Tertiary Left TR = Tertiary Right AC = Accumulator PT = Pressure Transmitter BD = Burst Disc HX = Heat Exchanger HT = Heater FT = Flow Transmitter LT = Liquid Level Transmitter TT = Temperature Transmitter FL = Filter PM = Pump VL = Valve HPL = High Pressure Liquid LPG = Low Pressure Gas SLV = Saturated Liquid Vapor Mixture bverlaat@nikhef.nl

VTCS control integration for 1 VELO half Cooling connector Connector onto Evaporator Evaporator Outdoor T-sensors to dummy rep. board Heater repeater board 2 Cooling repeater board 1 VTCS local control box Tertiary vacuum control 2x3 P-sensors 2x12 T-sensors Evaporator into Module base Evaporator sensors to connector board 2x4 Heaters 2x36 T-sensors Heaters and T-sensors to connector board Module base Cooling plant and control on RB-84 platform T-sensor signal wires P-sensor signal wires Heater power wires Installation direction Connection to bake-out control bverlaat@nikhef.nl RF-Box

VTCS Schematic at VELO VELO Cave (View from tunnel) bverlaat@nikhef.nl Concentric Transfer tube VTCS Local control boxes VTCS Sensor boards (Dummy repeater) Removable tubing Left Evaporator Connection Right Evaporator Connection Left Detector Right Detector Tertiary Vacuum Control bverlaat@nikhef.nl

VTCS Cabling logic at VELO 4x P-sensors TxPT01-TxPT04 4x Shielded cables 6 wire SCEM 04.21.48.050.6 Direct on P-sensor (Rigth half shown seen from LHCb into tunnel) VTCS Local Control Box Heater Repeater Board 4x Heater TxHT01-TxHT04 4x Shielded cables 4 wire SCEM 04.21.52.180.6 4x 2 pin (2A) connector on R-Bd 4x T-Sensor TxTT45-TxTT48 1x shielded cable 16 wire SCEM?????????? 1x 16 pin connector on R-Board 12x T-sensors TxTT37-TxTT48 1x Shielded cables 50 wire SCEM 04.21.51.350.0 1x 50 pin connector on R-Board 4x HeaterTxHT01-TxHT04 Via kapton cable 8x T-Sensor TxTT37-TxTT44 Via kapton cable 36x T-Sensor TxTT01-TxTT36 Via kapton cable Cooling repeater Board VTCS Cabling logic at VELO 36x T-sensors TxTT01-TxTT36 3x Shielded cables 50 wire SCEM 04.21.51.350.0 3x 50 pin connector on R-board Quantities for 1 detector half T-sensor signal wires P-sensor signal wires Heater power wires bverlaat@nikhef.nl

INTERFACE BOARD LAYOUT bverlaat@nikhef.nl

Right Detector half bverlaat@nikhef.nl Cooling Repeater Heater Repeater bverlaat@nikhef.nl

Temperature sensors on evaporator bverlaat@nikhef.nl

Finished evaporator with cabling bverlaat@nikhef.nl

Evaporator Cabling details bverlaat@nikhef.nl

Evaporator Sensor Locations bverlaat@nikhef.nl

Evaporator Slow Control Evaporator Temperature sensor cabling situation in side the secondary vacuum bverlaat@nikhef.nl Evaporator Slow Control

bverlaat@nikhef.nl Cooling connectors Flexible in and outlet lines Capillary and T-Sensor channel PT100 cables PT100 Interface board Vapor outlet Cooling vacuum feed trough Liquid inlet bverlaat@nikhef.nl Evaporator Slow Control

bverlaat@nikhef.nl Details behind kapton flat cables Cooling repeater Evaporator Slow Control

Specific Sensor Functions Sensor TT36 Dew-point monitoring Sensor TT33/34 2-phase return monitoring Specific Sensor Functions Sensor TT(3,5-14,17,19-28,31) Dry-out control bverlaat@nikhef.nl Evaporator Slow Control

Evaporator Slow Control Interface Board Layout Cable 4 longest Cable 3 Cable 2 Cable 1 Shortest TT30 TT25 Free TT35 TT10 TT05 TT20 TT15 TT29 TT24 Free TT34 TT09 TT04 TT19 TT14 TT28 TT23 Free TT33 TT08 TT03 TT18 TT13 TT27 TT22 Free TT32 TT07 TT02 TT17 TT12 TT26 TT21 TT36 TT31 TT06 TT01 TT16 TT11 Free Free Free Free bverlaat@nikhef.nl Evaporator Slow Control

Evaporator Slow Control PT100 Cable lengths Cable lengths are from TT sensor to soldering patch on interface board. Over length is included All shown lengths are similar for the left and right detector. Shown are the sensors of 1 detector half. Every sensor need to be fabricated 2 times. Sensor ID TT37 – TT48, will be cut to length when assembled. Pre made length for all will be 1500 mm bverlaat@nikhef.nl Evaporator Slow Control

bverlaat@nikhef.nl Code Part number Functionality Temperature range (°C) Function TR-TT01 PT100 TL-HX01 Liquid inlet -50 / 40 Educational TR-TT02 block 1 TR-TT03 Dry-out monitoring Monitoring TR-TT04 Vapor outlet TR-TT05 TL-HX02 TR-TT06 TL-HX03 TR-TT07 TL-HX04 TR-TT08 TL-HX05 TR-TT09 TL-HX06 TR-TT10 TL-HX07 TR-TT11 TL-HX08 TR-TT12 TL-HX09 TR-TT13 TL-HX10 TR-TT14 TL-HX11 TR-TT15 TL-HX12 TR-TT16 TR-TT17 TR-TT18 TR-TT19 TL-HX13 TR-TT20 TL-HX14 TR-TT21 TL-HX15 TR-TT22 TL-HX16 TR-TT23 TL-HX17 TR-TT24 TL-HX18 bverlaat@nikhef.nl

bverlaat@nikhef.nl Code Part number Functionality Temperature range (°C) Function TR-TT25 PT100 TR-HX21 Dry-out monitoring -50 / 40 Monitoring TR-TT26 TR-HX24 TR-TT27 TR-HX25 TR-TT28 TR-HX26 TR-TT29 TR-HX27 Liquid inlet Educational TR-TT30 block 1 TR-TT31 TR-TT32 Vapor outlet TR-TT33 Vapor return TR-TT34 TR-TT35 Manifold TR-TT36 Bellow flange TR-TT37 TR-HT01 Control Control loop TR-TT38 TR-HT02 TR-TT39 TR-HT03 TR-TT40 TR-HT04 TR-TT41 Module base TR-TT42 TR-TT43 RF-Foil TR-TT44 TR-TT45 Transfer tube liquid outlet TR-TT46 Local control box liquid inlet TR-TT47 Capillaries inlet TR-TT48 Local control box vapor outlet bverlaat@nikhef.nl

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Temperature sensors and heaters on the module base bverlaat@nikhef.nl

Module base thermostatic heating schematics 30 Volt DC Watlow K010030c500000 52.3Ω, 15 Watt max Watlow K010030c500000 52.3Ω, 15 Watt max Watlow K010030c500000 52.3Ω, 15 Watt max Per heater assembly: Vmax=30 Volt R=8.7 Ω Qmax=34.8 Watt Imax=2 A Earth 30 Volt DC Watlow K010030c500000 52.3Ω, 15 Watt max Watlow K010030c500000 52.3Ω, 15 Watt max Watlow K010030c500000 52.3Ω, 15 Watt max Earth Heater Assembly # Controlled by T-Sensor #: Tx-HT01 Tx-TT37 Tx-HT02 Tx-TT38 Tx-HT03 Tx-TT39 Tx-HT04 Tx-TT40 bverlaat@nikhef.nl Module Base Slow Control

Heater locations on Module Base 39 92 89 42 91 87 37 40 90 94 41 88 Right side in figure 93 38 Middle in figure Left side in figure Heater locations on Module Base bverlaat@nikhef.nl Module Base Slow Control

Module Base Slow Control Access holes Interface Board bverlaat@nikhef.nl Module Base Slow Control

Module Base Slow Control Interface Board Layout Not read out by repeater Cable 4 longest Cable 3 Cable 2 Cable 1 Shortest Read out by repeater Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free Free TT93 TT41 TT94 TT42 TT91 TT43 TT92 TT44 TT89 TT37 TT90 TT38 TT87 TT39 TT88 TT40 HT01 HT02 HT03 HT04 bverlaat@nikhef.nl Module Base Slow Control

Thermal model includes: No heaters (T~-13°C ) Homogeneous heating (Q=25W) Thermal model includes: Invisible nodes of the module thermal model (from EN-05-01) & Evaporator connection Radiation to environment HT03=5W 4 Group heating HT01=3W Thermal model of a nominal case Qdetector= 552 W Tcooling=-30°C Tenvironement= 30°C HT04=8W HT02=8W bverlaat@nikhef.nl

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