MVD Mechanics update EXTERNAL FRAME: NEW DESIGN

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Presentation transcript:

MVD Mechanics update EXTERNAL FRAME: NEW DESIGN CENTRAL DETECTORS INTEGRATION COOLING OF THE SERVICES (GBT & DC-DC CONV.) G. Giraudo FRASCATI 9 SEPTEMBER 2014

EXTERNAL FRAME: NEW DESIGN New disks configuration Frame longer Windowing optimization G. Giraudo FRASCATI 9 SEPTEMBER 2014

EXTERNAL FRAME: NEW DESIGN Disks connection to the frame  screws Disks position  internal bosses (machined) G. Giraudo FRASCATI 9 SEPTEMBER 2014

EXTERNAL FRAME: NEW DESIGN G. Giraudo FRASCATI 9 SEPTEMBER 2014

CENTRAL DETECTORS INTEGRATION COOLING MANIFOLDS DC-DC CONVERTERS 162 PRESSURE SENSORS GBTs ROUTING OF THE SERVICES: STILL OPEN ISSUE G. Giraudo FRASCATI 9 SEPTEMBER 2014

CENTRAL DETECTORS INTEGRATION MVD’s SERVICES NEEDS WELDED BOSSES LENGTH +200 mm G. Giraudo FRASCATI 9 SEPTEMBER 2014

COOLING OF THE SERVICES (GBT & DC-DC CONV.) 88 DCDC boards/twin bar 24 twin bars  2112 DCDC boards Aluminium alloy  bar Stainless steel (AISI 316)  tube 16 GBT boards/bar 12 (6+6) bars  192 GBT boards Aluminium alloy  bar Stainless steel (AISI 316)  tube G. Giraudo FRASCATI 9 SEPTEMBER 2014

DC-DC Converter Boards COOLING OF THE SERVICES (GBT & DC-DC CONV.) Ideal contact between tube and bar glue layers ignored DC-DC Converter Boards Bars Al-alloy 175 W/m∙K Tube SS (AISI 316) 6x5 (mm) Thermal contact area 1 cm2 Power flow 3 W/cm2 Tot. power 132 W Water temp. 18 oC Water flow rate 0.9 l/min G. Giraudo FRASCATI 9 SEPTEMBER 2014

COOLING OF THE SERVICES (GBT & DC-DC CONV.) Ideal contact between tube and bar glue layers ignored GBT Boards Bars Al-alloy 175 W/m∙K Tube SS (AISI 316) 6x5 (mm) Thermal contact area 2 cm2 Power flow 1 W/cm2 Tot. power 64 W Water temp. 18 oC Water flow rate 0.9 l/min G. Giraudo FRASCATI 9 SEPTEMBER 2014

What’s next? Services routing optimization Beam & Cross Pipe modification Construction of one DCDC converter bar (Thermal study) Detailed study of carbon paper thermal properties Tests of thermal film glue Results of the last two point will be reported at the next C.M. G. Giraudo FRASCATI 9 SEPTEMBER 2014