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

Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling HV cable layout (from UXC55 vs USC55) 15 KV(DC) with individual insulating sheath Braided shield Signal return Required characteristic CERN safety instruction IS23: Flame retardant (IEC Cat. C) Zero halogene (IEC ) Smoke density (IEC 61034) Corrosiveness of combustion gases (IEC ) Maximum current per conductor: 500 uA Maximum voltage per conductor: 15 KV-DC External sheath Internal sheath

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

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

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: 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 Cat. C) –Zero halogene (IEC ) –Smoke density (IEC 61034) –Corrosiveness of combustion gases (IEC ) Competitor manufacturers: Kabelwerk EUPEN - NOVACAVI

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

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

Paolucci INFN-Napoli Muon Annul Review Cern 15 September 2003 RPC cabling Barrel RPC: sector cables (except sectors ) RB2_OUT RB2_IN RB1_OUT RB1_IN RB3 RB4 6 LV 8 HV To balconies SGN 6 DCS To LBBOX (12) 12 (18) p 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 )

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 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

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 SGN 7 DCS To LBBOX 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

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 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 )

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

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

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

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

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 SY HV patch panel 80 HV modules 12 EASY crates + 1 SY HV patch panel 60 HV modules 9 EASY crates + 1 SY HV patch panel +

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

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.

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

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)