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RPC cabling

HV & LV cables Signal cables Position and composition of racks in UXC and USC. RPC cabling. HV cable layout (from UXC55 vs USC55). Required characteristic CERN safety instruction IS23: Flame retardant (IEC 60332-3 Cat. C) Zero halogene (IEC 60754-1) Smoke density (IEC 61034)

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RPC cabling

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  1. HV & LV cables Signal cables Position and composition of racks in UXC and USC RPC cabling

  2. HV cable layout (from UXC55 vs USC55) • Required characteristic • CERN safety instruction IS23: • Flame retardant (IEC 60332-3 Cat. C) • Zero halogene (IEC 60754-1) • Smoke density (IEC 61034) • Corrosiveness of combustion gases (IEC 60754-1) • Maximum current per conductor: 500 uA • Maximum voltage per conductor: 15 KV-DC Signal return Conductor @ 15 KV(DC) with individual insulating sheath Braided shield External sheath Internal sheath

  3. HV cables characteristics • Multiconductor cable 8 x (3x0.22) H2M1 Halogene Free 15 kV cc (from patch panels towards tower to patch panel on USC) • External diameter 26.2 mm (nominal) • Weight (indicative) 826 g/m • Cable 1 x (3x0.22) H2M1 Halogene Free 15 kV cc (from detector towards patch panels on towers) • External diameter 7.7 mm (nominal) • Weight (indicative) 82 g/m • Manufacturer: NOVACAVI

  4. Cable 12 x 0.75 (RB2/3 case): Braided shield: copper External diameter (nominal): 10.1 mm Weight (indicative): 175 g/m Cable 8 x 0.75 (RB2/2 case): Braided shield: copper External diameter (nominal): 9.0 mm Weight (indicative): 156 g/m Manufacturer: NOVACAVI LV cable characteristics

  5. 20 twisted pairs cable Very low skew cable (1-2 ns between pairs for 25 m max length) Conductor cross section: 28 AWG Insulator: PE Global shield: tinned copper braid External shield: PE Total external diameter: 12-13 mm Rated voltage: 10 V (used for LVDS signal transmission) Operating temperature: 0°/+60°C Characteristic impedance: 110  (10%) CERN safety instruction IS23 compliant: Flame retardant (IEC 60332-3 Cat. C) Zero halogene (IEC 60754-1) Smoke density (IEC 61034) Corrosiveness of combustion gases (IEC 60754-1) Competitor manufacturers: Kabelwerk EUPEN - NOVACAVI Signal cable characteristics

  6. Possible cabling layout Drawn by L. Roscilli

  7. Possible cabling layout Drawn by L. Roscilli

  8. Barrel RPC: sector cables (except sectors 4-9-10-11) To balconies Wheel 0, ±1 (Wheel ±2 ) To LBBOX 6 LV 8 HV 78 SGN 6 DCS 17p 12 18w RB4 RB4 17p 12 18w RB3 RB3 17p (110p) 12 (18) 18w (112w) RB2_OUT 110p (17p) 18 (12) 112w (18w) RB2_IN 17p 18w 12 RB1_OUT 17p 12 18w RB1_IN

  9. Barrel RPC: sector cables (sector 4) To balconies Wheel 0, ±1 (Wheel ±2 ) To LBBOX 7 LV 10 HV 90 SGN 7 DCS 12 17p 17p 12 18w RB4 RB4 RB4 RB4 17p 18w 12 RB3 RB3 18w 17p (110p) 18w (112w) 12(18) RB2_OUT 110p (17p) 112w (18w) 18(12) RB2_IN 17p 18w 12 RB1_OUT 17p 12 18w RB1_IN

  10. Barrel RPC: sector cables (sector 10) To balconies Wheel 0, ±1 (Wheel ±2 ) To LBBOX 7 LV 8 HV 86 SGN 7 DCS 10 17p 17p 10 18w RB4 RB4 18w 17p 12 RB3 RB3 18w 17p (110p) 18w (112w) 12(18) RB2_OUT 110p (17p) 112w (18w) 18(12) RB2_IN 17p 18w 12 RB1_OUT 17p 12 18w RB1_IN

  11. Barrel RPC: sector cables (sectors 9-11) To balconies Wheel 0, ±1 (Wheel ±2 ) To LBBOX 6 LV 7 HV 72 SGN 6 DCS 17p 6 18w RB4 17p 12 18w RB3 RB3 17p (110p) 18w (112w) 12(18) RB2_OUT 110p (17p) 112w (18w) 18(12) RB2_IN 17p 18w 12 RB1_OUT 17p 12 18w RB1_IN

  12. Numbers and lengths Updated by F. Montecassiano

  13. Numbers and lengths Updated by F. Montecassiano

  14. Cables length specification (Wheel 0/ Z-) updated by L. Roscilli

  15. Cables length specification (Wheel 0/ Z+) updated by L. Roscilli

  16. + HV Patch Panel Rack composition in USC • SY1527: • 9 or 11 A1676 Branch Controllers • EASY crates • HV modules (A3512): • 7 modules/crate

  17. Rack position in USC

  18. Calculation per quadrant (Barrel) 3 LV modules (A3003)/quadrant (6 EASY crate slots) Current absorption calculations: 2 Lbboxes x 13 LBs = 26 LBs 1 Lbbox x 15 LBs = 15 LBs 41 LBs/quadrant Current absorption: 14A/LB (estimation) 14A x 41 LBs = 574 A/quadrant We need 6 A3100 CAEN LV module (4 slots width each) We need a total of 24 slots  1 + 1/5 EASY crates per tower This fit with the 2 x 6U crates foreseen for RPC. Rack composition in UXC

  19. Rack composition in UXC towers

  20. We are ready for asking a cable PRR we are just collecting all necessary documentations Before the end of this year we start tenders this implies to know exactly total lengths Open issues: Cable path (to be approved very soon) Conclusions

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