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SUMMARY:Data Aquisition System for the PENeLOPE Experiment using the Unifi
 ed Communication Framework
DTSTART;VALUE=DATE-TIME:20170303T051000Z
DTEND;VALUE=DATE-TIME:20170303T053000Z
DTSTAMP;VALUE=DATE-TIME:20260313T112812Z
UID:indico-contribution-1592@indico.inp.nsk.su
DESCRIPTION:Speakers: Dominic Gaisbauer (Institute for Hadronic Structure 
 and Fundamental Symmetries\, TU Munich)\nPENeLOPE is a neutron-lifetime ex
 periment aiming for high precision by counting neutrons and decay protons.
  The proton detector consists of about 1250 Avalanche Photodiodes (APDs) w
 ith a total active area of 1225$~$cm$^2$. The detector and electronics wil
 l be operated on a high electrostatic potential of -30$~$kV\, in a magneti
 c field of 0.6$~$T and at a temperature of 77$~$K. The electronics include
  low-noise preamplifiers\, CR-RC shapers\, ADCs and FPGAs. Each FPGA reads
  out 96 12-bit SAR-ADCs with 1$~$MSps in parallel. We developed a firmware
  for the FPGAs including a self-triggering readout with continuous pedesta
 l calculation and configurable trigger threshold.\nThe data transmission a
 nd configuration is done via the Unified Communication Framework (UCF) we 
 developed at the Technical University of Munich. UCF is a unified network 
 protocol developed for FPGAs with built-in high-speed serial interfaces. I
 t provides up to 64 different communication channels via a single serial l
 ink. One channel is reserved for timing and trigger information\, the othe
 r channels can be used for slow-control interfaces and data transmission. 
 All channels are bidirectional and share network bandwidth according to as
 signed priority. The timing channel distributes messages with fixed latenc
 y and low jitter (about 20$~$ps) in one direction. From this point of view
  the protocol implementation is asymmetrical. The framework supports point
 -to-point connections and star-like 1:n topologies. The star-like topology
  can be used for front-ends with low data rates and time-distribution syst
 ems. In this topology\, the master broadcasts information according to ass
 igned priorities\, the slaves communicate in a time-sharing manner to the 
 master. \n\nThe project is supported by the Maier-Leibnitz-Laboratorium (G
 arching)\, the Deutsche Forschungsgemeinschaft and the Excellence Cluster 
 "Origin and structure of the Universe".\n\nhttps://indico.inp.nsk.su/event
 /8/contributions/1592/
LOCATION:
URL:https://indico.inp.nsk.su/event/8/contributions/1592/
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