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Optical link in Calorimeter

This document outlines the optical link configurations for the Calorimeter Data Acquisition (DAQ) system used in the LHCb experiment. Key connections involve the Link Front End Electronics (FEE) through various optical ribbons, including 24 long optical links (approximately 100m), 20 medium links (80m), and 16 small links (10m). Detailed configurations for ECAL, HCAL, and PreShower/PS are provided, along with validation card connections and specifics for each hermetic area. The design leverages advanced optical transmission technologies to ensure data integrity over substantial distances.

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Optical link in Calorimeter

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  1. Optical link in Calorimeter DAQ: Link FEE(CROC) to Common L1 board 24 long optic rubbon(12 fibers) links: ~100m 20 long optic rubbon(12 fibers) links: ~ 80m 16 small optic rubbon(12 fibers) links: ~10m 4 optic patch-panel. TRIGGER: Link FEE(Validation) to Selection Crate 208 long optic single links: ~ 80m

  2. Calorimeters: Optical link FEE crate <> common L1 FEE Calorimeter Crate CROC card output Common L1 board (TLK2501 receiver) (GOL transmitter: Bologna design) Config A,B,C (14) 24 long optic rubbon link (~100m)  HCAL, SPD/PS , ECAL 16 small optic rubbon link (~10m) Config D,E (4) ECAL 20 long optic rubbon link (~80m) 4 Optic patch-panel Each optic rubbon link have 12 fibers Zurich LHCb week

  3. Calorimeters: Optical link FEE crate<> selection crate FEE (ECAL) Calorimeter Crate Validation card output FEE (PS/ SPD) Calorimeter Crate Validation card output (GOL transmitter: Bologna design) (GOL transmitter: Bologna design) 14 x 8 x 208 long optic single link (~80m) 5 to 8 1 5 to 8 1 Selection crate Lvds link L0 decision Unit Zurich LHCb week

  4. annex Zurich LHCb week

  5. Calorimeters: 4 detectors, 16 areas • We don’t mix electronic between 2 differents areas Hcal right: 2 granularity (possible mix) Hcal left: 2 granularity (possible mix) Ecal right: 3 granularity Ecal left: 3 granularity SPD/PS right: 3 granularity SPD/PS left: 3 granularity Total = 16 areas Zurich LHCb week

  6. 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 Common L1 board ECAL: fiber between CROC and common L1 board 1 Duplication of FE8 output in the CROC 7 2 NC 5 2 Crates 1 2 3 4 5 6 7 8 9 10 11 12 13 14 6 2 1 Duplication of FE8 output in the CROC Config D Crates 2 2 3 4 5 6 7 8 9 10 11 12 13 14 5 1 5 1 2 NC 1 Crate 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 4 1 2 14 14 12 16 13 13 11 15 3 12 12 10 14 Patch-panel: 44 fibers 1 Duplication of FE8 output in the CROC 11 11 9 13 12 12 14 16 10 10 11 11 13 15 5 14 11 14 10 10 9 9 13 10 13 9 9 12 9 12 7 10 NC 11 8 8 8 4 7 7 8 8 10 7 1 2 7 7 9 6 Crates 4 3 4 5 6 7 8 9 10 11 12 13 14 15 16 8 5 5 2 6 6 6 7 7 7 4 4 6 5 5 6 3 3 4 5 4 14 16 4 5 6 6 3 3 13 15 2 1 5 5 4 8 Crates 5 3 4 5 6 7 8 9 10 11 12 13 14 15 16 4 4 3 7 3 1 Duplication of FE8 output in the CROC Numerotations obsoletes (janv2005) 1 8 NC Config E 3 3 2 6 2 2 1 5 Patch-panel: 30 fibers ECAL Left 12 Crate 6 3 4 5 6 7 8 9 10 11 12 13 14 12 Config C Crate 7 3 4 5 6 7 8 9 10 11 12 13 14 Zurich LHCb week

  7. 12 12 HCAL: fiber between CROC and common L1 board Config B 9 13 12 12 12 8 Crate 1 3 4 5 6 7 8 9 10 11 12 13 15 8 7 14 7 6 13 1 2 5 12 6 4 11 12 3 10 5 2 Crate 2 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 9 12 10 NC 4 11 Config A 3 10 Numerotations obsoletes (janv2005) HCAL Left Zurich LHCb week

  8. 12 12 12 12 12 12 12 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2 2 2 12 Crates 3 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PreShower+SPD: fiber between CROC and common L1 board Config A Crates 1 10 NC 12 12 Crates 2 5 6 7 8 9 10 11 12 15 10 12 8 2 Config B 7 14 9 11 14 15 6 13 6 13 13 8 15 1 5 12 12 14 12 7 3 4 11 11 6 5 12 4 10 5 3 3 10 4 9 2 11 4 8 12 7 2 9 10 NC Config A 6 8 10 3 Numerotations obsoletes (janv2005) 2 9 2 5 7 12 PreShower + SPD Left Crates 4 2 3 4 5 6 7 8 9 10 11 12 13 14 15 12 10 NC Config A Zurich LHCb week

  9. CROC fiber output (ECAL, HCAL, PreShower+SPD) • the CROC board output is with 2 rubbons. • Each rubbon has 12 optic fibers. • Each fiber is for one fix FEE board. 12 :FE3,FE4,FE5,FE6,FE7,FE8,FE9,FE10,FE11,FE12,FE13,FE14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Crate FEE :FE1,FE2,FE15,FE16,duplicationFE8,nc,nc,nc,nc,nc,nc,nc 12 7 fibers N.C. FE16 FE1 CROC Zurich LHCb week

  10. Calorimeters: Validation card link max, 6 inputs min max 1 input min 1 output min max Zurich LHCb week

  11. Calorimeters: FEE area to validation card Half ECAL detector: left side Half HCAL detector: left side Validation card number Validation card number • One validation card • receive 6 to 8 ECAL inputs • Example: • Validation card Number 1 • 8 ECAL inputs • Validation card Number 11 • 6 ECAL inputs • One validation card • receive 1 to 4 HCAL inputs • Example: • Validation card Number 1 • 4 HCAL inputs • Validation card Number 11 • 1 HCAL input Numerotations obsoletes (janv2005) HCAL FEE card number ECAL FEE card number 14 half-backplane links FEE<> Validation card For half ECAL detector 40 cable links (RJ45) FEE<> Validation card For half HCAL detector Zurich LHCb week

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