Control for CTP and LTU boards in Run

Content  New VME processors  Control via GBT  Control via IP bus  Summary 2

New VME processors  5 for P2 + 3 for lab = 8  The newest VME processor from CCT is VP717 -> 2.0 GHz Corei7 processor, 4GB DRAM, 5 row, no P0 -> 3650 CHF  Gigabit Ethernet PMC module for VP717 -> 570 CHF  (8 x 3650) + (8x 570) = = CHF 3

Control via GBT at P2 - Bidir. communication always active - CTP readout and control via the same GBT channel DAQ PC in UX25-CR4 (PCI40 board) control and monitor Busy/Throttling GBT/TTC optical links Low Latency Interface Fan-out board ( 6U VME format ) LTU + TTCex boards (TTC drivers) TTC L0 trigger over copper cable LTU boards (GBT/PON drivers) ………………… Metallic connection Anywhere USB - 14 Ethernet GBT USB DCS PC Program FPGA and monitor T,V,I 4

Control via GBT in detector labs  One GBT link (from 48 GBT links) for LTU control  Bidir communication always active (???)  VIVADO Lab edition installed on Linux => direct programming from DAQ PC over USB LTU DAQ PC in UX25-CR4 (PCI40 board) control and monitor Detector USB- JTAG FPGA USB SFP+ GBT 47 x GBT TTC 10G-PON 5

Control via GBT - timescale  CTP/LTU control for development for CTP team in lab VME in 2016 GBT when CRU hw + CRU sw (driver) available (2017 ???)  CTP/LTU control in P2 only GBT  LTU control for users in lab detectors with CRU will use one GBT channel to control LTU old detectors will use some “light” version of CRU 6

Control via IP bus at P2 - CTP readout via special DAQ LTU board (details on slide 10) Trigger PC in UX25-CR4 control and monitor Busy/Throttling GBT/TTC optical links Low Latency Interface Fan-out board ( 6U VME format ) LTU + TTCex boards (TTC drivers) TTC L0 trigger over copper cable LTU boards (GBT/PON drivers) ………………… Metallic connection Anywhere USB - 14 Ethernet (optical cable) USB DCS PC Program FPGA and monitor T,V,I DAQ PC in UX25-CR4 (only CTP readout) GBT 7  Can we merge DAQ PC and Trigger PC ? Can we send also CTP readout via IP bus ?

Control via IP bus (1G Ethernet) in detector labs  IP bus (1G Ethernet) for LTU control  VIVADO Lab edition installed on Linux => direct programming from DAQ PC over USB LTU Trigger + DAQ PC control and monitor Detector USB- JTAG FPGA USB SFP+ Ethernet (copper cable) 48 x GBT TTC 10G-PON 8

Ethernet SFP for lab  Compatible with IEEE 802.3:2005  Industrial temperature range 40-85°C  Custom RJ-45 connector with integrated magnetic (EMI filter)  Low power, high performance 1.25Gbd SerDes integrated in module  Single +3.3V power supply operation  Auto-negotiation per IEEE 802.3:2005 Clause 28 (twisted pair) and Clause 37 (1000BASE-X)  Compatible to both shielded and unshielded twisted pair CAT-5 cable  RX_LOS disabled (RX_LOS means Ethernet link up/down, but for optical SPF means RX_LOS peak (AC) or voltage (DC), so it is better to have it disabled) AVAGO ABCU-5740ARZ RS -> 38 EUR/pc 9

“CTP readout” via DAQ LTU board  DAQ LTU board with IP bus (1 x SFP) and GBT or TTC 10G-PON (9 x SPF)  DAQ LTU board configured to receive all triggers => GBT link used to transmit “CTP readout”  Independent monitoring of all triggers using DAQ LTU  Reliability of Low Latency Interface (LLI) DAQ PC in UX25-CR4 (PCI40 board) DAQLTUDAQLTU FOFO LLI GBT 10

Advantages of GBT vs “IPbus” control  stable standard (all experiments use the same GBT)  higher bandwidth (4.8 Gbps)  Only one link for control and readout  SW support from Alice DAQ framework (???)  so far nobody in ALICE used IP bus Re-design of LM0 board for GBT control is not necessary (just replacement of 2 components, 125 MHz -> 120 MHz) 11

Summary  If we stay with VME control, we need to buy new VME processors -> ~30 kCHF  If we go with GBT control We need to change oscillator on LMO board, 125 MHz -> 120 MHz We need to wait until driver for CRU is ready (2017 ???) We need to buy one CRU for lab -> 5 kEUR We need to have GBT bidir communication also during data taking  If we go with IP bus We can start development immediately (LM0 board has 125 MHz oscillator) We can arrange “CTP readout” via DAQ LTU board, so we will be as other detectors We need one extra PC - TRIGGER PC at Point2 Which branch of IP bus to choose ? 12