1. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling HV & LV cables Signal cables Position and composition of racks in UXC and USC

2. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling HV cable layout (from UXC55 vs USC55) Conductor @ 15 KV(DC) with individual insulating sheath Braided shield Signal return 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 External sheath Internal sheath

3. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling 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. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling LV cable characteristics 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

5. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Signal cable characteristics 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

6. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Possible cabling layout Drawn by L. Roscilli

7. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Possible cabling layout Drawn by L. Roscilli

8. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Barrel RPC: sector cables (except sectors 4-9-10-11) RB2_OUT RB2_IN RB1_OUT RB1_IN RB3 RB4 6 LV 8 HV To balconies 12 78 SGN 6 DCS To LBBOX 12 18 (12) 12 (18) 12 1 7p 1 10p (1 7p ) 1 7p Wheel 0, ±1 (Wheel ±2 ) 1 8w 1 12w (1 8w ) 1 8w 1 8w (1 12w ) 1 7p (1 10p )

9. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Barrel RPC: sector cables (sector 4) RB2_OUT RB2_IN RB1_OUT RB1_IN RB3 RB4 7 LV 10 HV To balconies 12 90 SGN 7 DCS To LBBOX 12 18(12) 12(18) 12 RB4 Wheel 0, ±1 (Wheel ±2 ) 1 7p 1 10p (1 7p ) 1 7p 1 7p (1 10p ) 1 7p 1 8w 1 12w (1 8w ) 1 8w 1 8w (1 12w ) 1 8w 12

10. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Barrel RPC: sector cables (sector 10) RB2_OUT RB2_IN RB1_OUT RB1_IN RB3 RB4 7 LV 8 HV To balconies 12 86 SGN 7 DCS To LBBOX 12 10 Wheel 0, ±1 (Wheel ±2 ) 1 8w 1 12w (1 8w ) 1 8w 1 8w (1 12w ) 1 8w 18(12) 12(18) 1 7p 1 10p (1 7p ) 1 7p 1 7p (1 10p ) 1 7p 10

11. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Barrel RPC: sector cables (sectors 9-11) RB2_OUT RB2_IN RB1_OUT RB1_IN RB3 RB4 6 LV 7 HV To balconies 12 72 SGN 6 DCS To LBBOX 12 6 Wheel 0, ±1 (Wheel ±2 ) 1 8w 1 12w (1 8w ) 1 8w 1 8w (1 12w ) 18(12) 12(18) 1 7p 1 10p (1 7p ) 1 7p 1 7p (1 10p )

12. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Numbers and lengths Updated by F. Montecassiano

13. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Numbers and lengths Updated by F. Montecassiano

14. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Cables length specification (Wheel 0/ Z-) updated by L. Roscilli

15. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Cables length specification (Wheel 0/ Z+) updated by L. Roscilli

16. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Rack composition in USC HV Patch Panel 1.SY1527: 9 or 11 A1676 Branch Controllers 1.EASY crates 2.HV modules (A3512): 7 modules/crate Full Option: 1020 HV channels Chamber Option: 480 HV channels Station Option: 360 HV channels 170 HV modules 25 EASY crates + 1 SY1527 + 20 HV patch panel 80 HV modules 12 EASY crates + 1 SY1527 + 20 HV patch panel 60 HV modules 9 EASY crates + 1 SY1527 + 20 HV patch panel +

17. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Rack position in USC

18. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Rack composition in UXC 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.

19. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Rack composition in UXC towers

20. Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Conclusions 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)