RPC cabling HV LV cables Signal cables Position
RPC cabling • HV & LV cables • Signal cables • Position and composition of racks in UXC and USC Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
HV cable layout (from UXC 55 vs USC 55) Required characteristic CERN safety instruction IS 23: • 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 u. A • Maximum voltage per conductor: 15 KV-DC Signal return Conductor @ 15 KV(DC) with individual insulating sheath Braided shield Muon Annul Review Cern 15 September 2003 Internal sheath RPC cabling External sheath Paolucci INFN-Napoli
HV cables characteristics • Multiconductor cable 8 x (3 x 0. 22) H 2 M 1 Halogene Free 15 k. V 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 (3 x 0. 22) H 2 M 1 Halogene Free 15 k. V cc (from detector towards patch panels on towers) – External diameter 7. 7 mm (nominal) – Weight (indicative) 82 g/m • Manufacturer: NOVACAVI Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
LV cable characteristics • Cable 12 x 0. 75 (RB 2/3 case): – Braided shield: copper – External diameter (nominal): 10. 1 mm – Weight (indicative): 175 g/m • Cable 8 x 0. 75 (RB 2/2 case): – Braided shield: copper – External diameter (nominal): 9. 0 mm – Weight (indicative): 156 g/m • Manufacturer: NOVACAVI Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
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 IS 23 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 Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Possible cabling layout Drawn by L. Roscilli Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Possible cabling layout Drawn by L. Roscilli Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Barrel RPC: sector cables (except sectors 4 -9 -10 -11) To balconies 6 LV Wheel 0, ± 1 (Wheel ± 2 ) To LBBOX 8 HV 6 DCS 17 p 18 w 18 w (112 w) 112 w (18 w) 18 w Muon Annul Review Cern 15 September 2003 RB 4 RB 3 RB 2_OUT RB 2_IN RB 1_OUT RB 1_IN RPC cabling 17 p 78 SGN 12 12 17 p (110 p) 12 (18) 110 p (17 p) 18 (12) 17 p 12 12 Paolucci INFN-Napoli
Barrel RPC: sector cables (sector 4) To balconies 7 LV Wheel 0, ± 1 (Wheel ± 2 ) To LBBOX 10 HV 7 DCS 90 SGN 12 17 p 18 w 18 w (112 w) 112 w (18 w) 18 w Muon Annul Review Cern 15 September 2003 RB 4 RB 3 RB 2_OUT RB 2_IN RB 1_OUT RB 1_IN RPC cabling 17 p 17 p (110 p) 110 p (17 p) 17 p 12 12 12(18) 18(12) 12 12 Paolucci INFN-Napoli
Barrel RPC: sector cables (sector 10) To balconies 7 LV Wheel 0, ± 1 (Wheel ± 2 ) To LBBOX 8 HV 7 DCS 86 SGN 10 17 p 18 w 18 w (112 w) 112 w (18 w) 18 w Muon Annul Review Cern 15 September 2003 RB 4 17 p RB 4 RB 3 RB 2_OUT RB 2_IN RB 1_OUT RB 1_IN RPC cabling 17 p (110 p) 110 p (17 p) 17 p 10 12 12(18) 18(12) 12 12 Paolucci INFN-Napoli
Barrel RPC: sector cables (sectors 9 -11) To balconies 6 LV Wheel 0, ± 1 (Wheel ± 2 ) 7 HV 18 w (112 w) 112 w (18 w) 18 w Muon Annul Review Cern 15 September 2003 72 SGN 6 DCS 18 w To LBBOX 17 p RB 4 RB 3 RB 2_OUT RB 2_IN RB 1_OUT RB 1_IN RPC cabling 17 p (110 p) 110 p (17 p) 17 p 6 12 12(18) 18(12) 12 12 Paolucci INFN-Napoli
Numbers and lengths Muon Annul Review Cern 15 September 2003 RPC cabling Updated by F. Montecassiano Paolucci INFN-Napoli
Numbers and lengths Updated by F. Montecassiano Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Cables length specification (Wheel 0/ Z-) updated by L. Roscilli Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Cables length specification (Wheel 0/ Z+) updated by L. Roscilli Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Rack composition in USC 1. SY 1527: 9 or 11 A 1676 Branch Controllers 1. 2. EASY crates HV modules (A 3512): + 7 modules/crate HV Patch Panel Full Option: Chamber Option: Station Option: 1020 HV channels 480 HV channels 360 HV channels 170 HV modules 25 EASY crates + 1 SY 1527 + 20 HV patch panel 80 HV modules 12 EASY crates + 1 SY 1527 + 20 HV patch panel 60 HV modules 9 EASY crates + 1 SY 1527 + 20 HV patch panel Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Rack position in USC Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Rack composition in UXC Calculation per quadrant (Barrel) • 3 LV modules (A 3003)/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: 14 A/LB (estimation) 14 A x 41 LBs = 574 A/quadrant We need 6 A 3100 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 6 U crates foreseen for RPC. Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
Rack composition in UXC towers Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
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) Muon Annul Review Cern 15 September 2003 RPC cabling Paolucci INFN-Napoli
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