The Scalable Readout System (SRS) integration into the TOTEM - PowerPoint PPT Presentation

SRS Firmware development Software development The Scalable Readout System (SRS) integration into the TOTEM experiment Adrian Fiergolski (Warsaw University of Technology, Poland) on behalf of the TOTEM DAQ group October 14, 2013 Adrian Fiergolski The SRS in the TOTEM experiment 1

SRS Firmware development Software development Current DAQ scheme In the TOTEM standalone configuration, the VME bus bandwidth limits the trigger rate to 1kHz. Adrian Fiergolski The SRS in the TOTEM experiment 2

SRS Firmware development Software development Scalable Readout System Adrian Fiergolski The SRS in the TOTEM experiment 3

SRS Firmware development Software development Scalable Readout System Advantages Cost effective replacement for the currently used VME-based solution offering higher bandwidth TOTEM’s implementation will be compatible with the CMS DAQ Allow standalone runs of the TOTEM Enable hardware data filtration Adrian Fiergolski The SRS in the TOTEM experiment 4

SRS Firmware development Software development FEC Firmware development Hardware description and verification in the System Verilog language compactness, syntax structures → more re-usable, less error prone code the language consequently gains attention of industry → increasing maturity of the EDA tools possibility to use legacy VHDL, VERILOG modules (eg. SRS specific, open cores) The communication between entities via standard interfaces → AMBA AXI4-Stream, AHB Automatic register generation from register map specification → IDesignSpec Adoption of the current FEC design to the above guidelines Adrian Fiergolski The SRS in the TOTEM experiment 5

SRS Firmware development Software development Firmware verification The firmware is simulated using System Verilog combined with the Universal Verification Methodology (UVM) high level of abstraction (reusable) random test vector generation (guided by constraints) coverage indicating verification progress EDA tools provide UVM libraries to test popular interfaces (eg.Ethernet, I2C) The verification of the FEC defines two kind of simulations: partial simulation → to achieve faster simulation coverage of complex modules full design Adrian Fiergolski The SRS in the TOTEM experiment 6

SRS Firmware development Software development Firmware verification Adrian Fiergolski The SRS in the TOTEM experiment 7

SRS Firmware development Software development SRS Readout In order to allow efficient system testing and software migration to other platforms and frameworks, the SRS readout application has been deployed. stand-alone, multi-thread application based on Boost C++ libraries fully portable SRS readout Adrian Fiergolski The SRS in the TOTEM experiment 8

SRS Firmware development Software development Future work Finalization of the back-pressure implementation assuring UDP packet lossless readout Full support of the DTC link as soon as a mature release will be available → in contact with maintainer A.T.Martinez Implementation of the full TTC signal distribution SRU → FECs → OptoRXs Firmware support for online data validation Adrian Fiergolski The SRS in the TOTEM experiment 9

SRS Firmware development Software development Thank you for your attention. Adrian Fiergolski The SRS in the TOTEM experiment 10