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HK: Fachverband Physik der Hadronen und Kerne

HK 6: Instrumentation I

HK 6.9: Vortrag

Montag, 27. März 2017, 18:45–19:00, F 072

Read-Out Resilience in Radiation Environments — •Andrei-Dumitru Oancea and Udo Kebschull for the CBM collaboration — IRI , Geothe-Universität Frankfurt, Germany

In a radiation environment it is only a question of time until single-event effects cause an alteration in the firmware of Read-Out Board FPGAs, which ultimately leads to data loss due to the malfunction of the affected boards. To combat this, we are developing an autonomous concept that ensures that all boards are continuously monitored, quickly repairs errors in the firmware, and re-integrates boards that needed a reset into the read-out chain to minimize the downtime caused by radiation effects. The approach is furthermore free of flash technology, since flash memories will limit the longevity of the involved electronics due to low Total Ionizing Dose.

The developed approach works for Xilinx 7-Series FPGAs and is based on the GBTX chain (CERN), which was designed for radiation-hard data and slow control links in high-energy physics experiments. It utilizes the GBT-SCA, which is a slow control adapter ASIC for programming FPGAs and repair erroneous FPGA configuration frames via selective frame scrubbing on-demand, but only in case the errors cannot be fixed via the internal autonomous SECDED mechanism, which is the advantageous feature of 7-Series FPGAs. The developed concept is scalable for multiple firmwares running on multiple FPGAs.