STRIP BARREL PP 1 SM Jason Tarrant 181018

STRIP BARREL – PP 1 & SM Jason Tarrant 18/10/18 1

Patch Panel 1 (PP 1) & Barrel Service Module (SM) LOCATION SERVICES / SERVICES TYPES SERVICE MODULE POSITIONS & SEGMENTATION CONSTRAINTS REQUIREMENTS • ENVELOPES • INTERFACES • G&S & SEALING • THERMAL • OTHER • DESIGN • GENERAL • ENVELOPES • INTERFACES • G&S & SEALING • THERMAL • OTHER • CONCLUSION & FUTURE WORK • • 2

Location Barrel Staves Services Gap PP 1 Region Bulkhead Service Module Tray Region 3

Location Staves on Barrels Patch Pipes & Routed Services in Services Gap Service Modules PP 1 4

Services Types ELECTRICAL - POWER ALL AT PP 1 OPTICAL FIBRE ELECTRICAL – DETECTOR CONTROL SYSTEM (DCS) 5

Services Types ELECTRICAL - POWER ALL AT PP 1 Type II cable Shield termination & hermetic seal (to cable tray) Type II Cable side Glenair Connector Filter PP 1 Type I Cable side Shielded cables Individual wires (respecting minimum bend radii) OPTICAL FIBRE Array of single connector mounts Sheathed ribbons ELECTRICAL – DETECTOR CONTROL SYSTEM (DCS) Shielded cable (? ) Twisted pairs Ribbons split to 3 s, 2 s or single fibres within SM - TBD Connector (MTP) Filtered D-type connector (Glenair) Crimp contact Hooded D-type connector 6

Services Types FLUID SERVICES – CO 2 INLET Pipes to capillaries or just capillaries TBD To Stave FLUID SERVICES – CO 2 EXHAUST 3. 175 mm (1/8”) OD pipes Welded joints with fittings Brazed in manifold From Stave Vacuum insulation 9. 525 mm (3/8”) OD pipe Electrical break (added after pit install for safe connection & ease of replacement) 7

SM Positions & Segmentation Layout of SM positions and particular Staves serviced + quadrant rotational symmetry as shown below aims to minimise the number of different types of Services, e. g. cable harness types C Side – Looking towards Z = 0 Common positions SM to Stave also minimise routing and different services types A Side – Looking towards Z = 0 8

SM Positions & Segmentation Most SMs service 8 x Staves, The orange highlighted SM services = 9 x Staves (best way to manage 49 staves in a quadrant, was 48 previously) C Side – Looking towards Z = 0 Inner 2 Layers = Short Strip (SS) Staves Outer 2 Layers = Long Strip (LS) Staves A Side – Looking towards Z = 0 SMs can service more than 1 layer BUT no mixing of SS & LS services in SMs 9

SM Positions & Segmentation Most SMs service 8 x Staves, The orange highlighted SM services = 9 x Staves (best way to manage 49 staves in a quadrant, was 48 previously) 8 way SM = 4 electrical connectors with 4 x Type II cable to 8 x Type I cable to 8 x Staves C Side – Looking towards Z = 0 A Side – Looking towards Z = 0 9 way SM = 5 electrical connectors with 5 x Type II cable to 9 x Type I cable to 9 x Staves In 9 way SM ½ of a Type II cable not used = only an extra 2 cables per end. Saves awkward routing, increases common routing & avoids 10 way cooling in a SM (9 way cooling max on higher power SS staves) 10

SM Positions & Segmentation C Side – Looking towards Z = 0 A Side – Looking towards Z = 0 SM positions should not change re. 9/8 way … but specific Staves serviced by particular SMs may change when final service optimisation takes place 11

Services Module Constraints / Requirements - Envelope • Envelope ITk_Envelope_1. x (2 D) • Fit with neighbour’s services & bulkhead (3 D) 9 Way SM Envelope Strip Endcap Services (below and around Barrel SMs) 8 Way SM Envelope Bulkhead Mid-section of ITk Cylinder (end section missing to see SM envelopes) PP 1 region requires 3 D space considerations 12

Services Module Constraints / Requirements - Interfaces • Structural Interfaces • At low Z fit to ITk cylinder flange • PP 1 end fixed (& sealed) to in-fill section of Bulkhead plate • PP 1 Services Interfaces • Electrical via Glenair filtered connector • Optical fibre via 4 or 5 single MTP connectors in a block • DCS via D-type (filtered Glenair & hooded pair) • CO 2 cooling via flex line (1/4” HVCR 3/8” equivalent + vacuum DN 25 KF) • Stave Interfaces • Electrical via Glenair or Axon connector • Optical fibre via MTP • DCS individual sensors • CO 2 cooling via patch pipes (pre-bent but fine tuned for point-point connection) and weld fittings As per Slide 5/6 13

Services Module Constraints / Requirements – Sealing & G&S • Structure • Seal = SM into In-Fill Plate then In-Fill Plate sealed to Bulkhead plate / Strip Endcap services • G&S = Ground connections as necessary • PP 1 Services Interfaces • Glenair connector • Sealed box on entry to ITk around Bulkhead • G&S via filter, grounding of cable shield & Faraday cage effect of enclosed box • Optical fibre • Sealed box on entry to ITk around Bulkhead • G&S N/A • D-type • Sealed box on entry to ITk around Bulkhead • G&S via filter, grounding of cable shield & Faraday cage effect of enclosed box • Cooling • Sealed box on entry to ITk around Bulkhead • G&S via grounding + electrical break at PP 1 on both CO 2 line and Vacuum Jacket 14

Services Module Constraints / Requirements – Thermal • Isolate significant heat transfer from cables & connectors to inlet cooling • Possibly connect cables to exhaust cooling • Perforations to allow dry gas purge of region Services Module Constraints / Requirements – Other • • • Easy connection of services (access) Modular construction preferable (testing, maintenance & spares) Services management (e. g. loss of excess) Services support (secure but safe clips & fixings) Bend radii of services (25 mm bare electrical cable under Glenair connector, 50 mm shielded cable, 15 mm min Optical fibres) Ease of installation (simple, secure, safe) Low mass material Simple design / minimal parts / common items (economies of scale) / good value Etc… 15

Pins for fixing to ITk cylinder flange go this end Design – General Cable tray and main SM support Shielded cables stripped Back, grounded & sealed here inside box Inside ITk cylinder Enclosed box Bulkhead in-line with this region Angled sides to save space Box depth allows wires to comply with bend radii requirements Outside Bulkhead Glenair connectors with filter and top connector removed (rear mounted) 16

Design – General Glenair connectors with filter and top connector Enclosed box Angled sides to save space Box depth allows wires to comply with bend radii requirements 17

Design – General Underside of previous assembly Optical fibres in enclosed box / tray DCS in enclosed box / tray 18

Design – General Back to top of assembly Inlet pipe assembly Exhaust pipe assembly Pipe supports fixed to support frame (see next slide) 19

Design – General Sealing takes place here (this is inside bulkhead in-fill) Bulkhead support interface frame Smooth closure in-line with Bulkhead (all services sealed inside) 20

Design – Envelope Fits the envelope Insertion envelope line (Glenair connector & filter removed) This nut drops down With Type II services Power cable Glenair filter & top connector Space required here for seal to bulkhead 21

Design – Envelopes are cylindrical the SM is relatively straight… Various cross sections through the PP 1 & SM, some close but within the envelope 22

Design – Envelope Fit with the Bulkhead Plate These are actually all 9 -way PP 1/SMs copied round 23

Design – Interfaces (Structural) 24

Design – Sealing & G&S • Structural Seal • Seal = SM into Bulkhead In-Fill Plate • G&S = Ground connections as necessary • PP 1 Services Interfaces • Glenair connector • Sealed box on entry to ITk around Bulkhead • G&S via filter, grounding of cable shield & Faraday cage effect of enclosed box • Optical fibre • Sealed box on entry to ITk around Bulkhead • G&S N/A • D-type • Sealed box on entry to ITk around Bulkhead • G&S via filter, grounding of cable shield & Faraday cage effect of enclosed box • Cooling • Sealed box on entry to ITk around Bulkhead • G&S via grounding + electrical break at PP 1 on both CO 2 line and Vacuum Jacket ✔ ✔ 25

Services Module Constraints / Requirements – Thermal As cables already shielded perforate trays for purge gas flow • Isolate significant heat transfer from cables & connectors to inlet cooling • Possibly connect cables to exhaust cooling • Perforations to allow dry gas purge of region Possibility of GFRP (insulating) tray Distance cables in tray from inlets & insulate to create ‘cold side’ Connect exhaust return thermally to ‘hot side’ of tray 26

Services Module Constraints / Requirements – Other • Easy connection of services (access) • All services at top / back of PP 1 = free access even when neighbouring structures added • Modular construction preferable (testing, maintenance & spares) • Separate electrical, optical fibre & DCS units + 2 x individual cooling • Services management (e. g. loss of excess) • Space to lose service length in SM for optical fibre & DCS, electrical will be lost in services gap as will capillary, other pipes pre-bent and tweaked to fit • Services support (secure but safe clips & fixings) • Mostly in trays, simple clips to be designed for cooling • Bend radii of services • Guides to restrict min bends and/or space in structure for loose bends in services • Ease of installation (simple, secure, safe) • Prongs, clips & simple fastenings to secure into ITk Cylinder / Bulkhead In-Fill • Low mass material • Aluminium, GFRP, Ti • Simple design / minimal parts / common items (economies of scale) / good value • 9 way metalwork differs from 8 way but possibility of using ‘blanked’ 9 way structure for all 8 way PP 1/SMs). Overall design relatively simple with minimum number of parts for function 27

Conclusion & Future Work • Conclusion: • Known requirements met • Further Design work • Thermal modelling to check for any unwanted heat load on inlets pipes • Design needs detail adding • Sealing PP 1 frame to In-Fill • Minor fastening detail for services • Tray closure fastening (probably PEM inserts & screws with keyhole slots & locks) • G&S connection review / OK (advice to be sought from G&S expert) • Probably capillary from manifold to Stave on inlet side • Bulkhead seal to be designed (Marco Oriunno overseeing this) • Future work • Prototype to fit on RAL mock-up • Services routing checks • Services support design • Welding in-situ • Maintenance / rework trials • Etc… • QA/QC & Reception Testing • Installation Instruction • Production & Transport Planning First prototype SM in ITk cylinder mock-up 28