From: Jan Michel Date: Mon, 29 Apr 2013 11:30:35 +0000 (+0200) Subject: few additions X-Git-Url: https://jspc29.x-matter.uni-frankfurt.de/git/?a=commitdiff_plain;h=67ac8fa798b65e3c1a117db668040b92b24d1179;p=conferences.git few additions --- 67ac8fa798b65e3c1a117db668040b92b24d1179 diff --cc 2013-twepp-michel-network/abstract.txt index 4cec3fe,3248bdc..f2944db --- a/2013-twepp-michel-network/abstract.txt +++ b/2013-twepp-michel-network/abstract.txt @@@ -1,9 -1,9 +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 (<100ps RMS) 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. ++(<100ps RMS) and as fast control system for the full PANDA detector setup. diff --cc 2013-twepp-michel-network/summary.txt index 847b560,58f2dea..1c645d8 --- a/2013-twepp-michel-network/summary.txt +++ b/2013-twepp-michel-network/summary.txt @@@ -1,32 -1,29 +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 + past years several new read-out electronics systems and data transportation -schemes have been developed. One part is the TrbNet data acquisition network ++schemes were developed. 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 physics 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 +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 ++acquisition was designed on top and successfully used during a physics +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 +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 -achieved by implementing messages with a 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. ++achieved by implementing messages with a 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 -All features have been implemented in the multipurpose TRB3 FPGA platform. We ++All features have been implemented in the multi-purpose 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.