From: Jan Michel Date: Mon, 29 Apr 2013 10:58:20 +0000 (+0200) Subject: small addition X-Git-Url: https://jspc29.x-matter.uni-frankfurt.de/git/?a=commitdiff_plain;h=3fdabce3eec4eeaaeea9844dc8aa4d6204c00730;p=conferences.git small addition --- diff --git a/2013-twepp-michel-network/abstract.txt b/2013-twepp-michel-network/abstract.txt index 96f5ff4..4cec3fe 100644 --- a/2013-twepp-michel-network/abstract.txt +++ b/2013-twepp-michel-network/abstract.txt @@ -1,7 +1,9 @@ -The design concepts of modern data acquisition systems share many similar features. Among them are -high bandwidth data transport, synchronization of front-ends and slow-control. This talk focuses -on the achieved synergy in data acquisition networks between several experiments of the FAIR project -and beyond. The TrbNet protocol developed for the upgrade of the HADES DAQ system is now also -employed in various prototype set-ups for detectors of the CBM and PANDA experiments. Additionally, -a modified implementation of the network is foreseen to be used for time synchronization and fast -control system for the full PANDA detector setup. +The design concepts of modern data acquisition systems share many +similar features. Among them are high bandwidth data transport, +synchronization of front-ends and slow-control. This talk focuses on the +achieved synergy in data acquisition networks between several experiments of +the FAIR project and beyond. The TrbNet protocol developed for the upgrade of +the HADES DAQ system is now also employed in various prototype set-ups for +detectors of the CBM and PANDA experiments. Additionally, a modified +implementation of the network is foreseen to be used for time synchronization +and as fast control system for the full PANDA detector setup. diff --git a/2013-twepp-michel-network/summary.txt b/2013-twepp-michel-network/summary.txt index cef650f..847b560 100644 --- a/2013-twepp-michel-network/summary.txt +++ b/2013-twepp-michel-network/summary.txt @@ -1,24 +1,32 @@ -During the upgrade of the HADES experiment at GSI (Darmstadt, Germany) in the past years several new -read-out electronics and data transportation developments were made. One part is the TrbNet data acquisition network protocol -that allows for individual slow-control access to each front-end module and provides a convenient interface -for trigger distribution and data read-out. A whole set of software for monitoring, control and -data acquisition was designed on top and successfully used during an experimental run in 2012. -The electronics developed for this upgrade are now in widespread use among several detector prototypes -and experimental set-ups, e.g. for the CBM and PANDA experiments at FAIR. Here, the TrbNet protocol -also serves as the read-out system. - -In this context it was a logical decision to also adapt the network protocol to the specific needs of these -experiments. One important difference is the time distribution concept that foresees to remove the need for a -dedicated timing signal and thereby reduce the amount of interconnection inside the system. The -optical data transmission system can support the synchronization of all sub-systems of a detector -on the order of nanoseconds. This can be achieved by implementing message with precisely -defined propagation latency. In particular, it is vital to fix all delays -introduced in the data transmission blocks on the transmitter and receiver sides. The length of the -optical cable between two nodes can be evaluated by measuring the round-trip time of a datagram. -The measuring precision of few nanoseconds with synchronous counters can be increased to below 100~ps -using the well-established FPGA-based TDC technology. - -All features have been implemented in the universal TRB3 FPGA platform. We are going to present the -implemented features with a focus on the synergy between experiments and show first measurements with synchronous networks. +During the upgrade of the HADES experiment at GSI (Darmstadt, Germany) in the +past years several new read-out electronics and data transportation +developments were made. One part is the TrbNet data acquisition network +protocol that allows for individual slow-control access to each front-end +module and provides a convenient interface for trigger distribution and +data read-out. A whole set of software for monitoring, control and data +acquisition was designed on top and successfully used during an experimental +run in 2012. The electronics developed for this upgrade are now in widespread +use among several detector prototypes and experimental set-ups, e.g. for the CBM +and PANDA experiments at FAIR. Here, the TrbNet protocol also serves as the +read-out system. +In this context it was a logical decision to also adapt the network protocol to +the specific requirements of these experiments. One important difference is +the time distribution concept that foresees to remove the need for a dedicated +timing signal and thereby reduce the amount of interconnection inside the +system. The optical data transmission system can support the synchronization +of all sub-systems of a detector on the order of nanoseconds. This can be +achieved by implementing message with precisely defined propagation latency. In +particular, it is vital to fix all delays introduced in the data transmission +blocks on the transmitter and receiver sides. The length of the optical cable +between two nodes can be evaluated by measuring the round-trip time of a +datagram. The measuring precision of few nanoseconds with synchronous counters +can be increased to below 100~ps using the well-established FPGA-based TDC +technology. Another difference of new DAQ systems is the free-running data +read-out without central arbitration. Here, no changes to the TrbNet protocol +are necessary since this mode is supported with few modifications of +the configuration of the system. +All features have been implemented in the universal TRB3 FPGA platform. We +are going to present the implemented features with a focus on the synergy +between experiments and show first measurements with synchronous networks. diff --git a/2013-twepp-michel-network/title.txt b/2013-twepp-michel-network/title.txt new file mode 100644 index 0000000..7e971d5 --- /dev/null +++ b/2013-twepp-michel-network/title.txt @@ -0,0 +1 @@ +DAQ Networks for FAIR based on TrbNet \ No newline at end of file