1 ns time to digital converters for the KM3NeT data readout system
- IFIC, Instituto de Física Corpuscular, CSIC- Universidad de Valencia, C/Catedrático José Beltrán, 2, 46980 Paterna (Spain)
The KM3NeT collaboration aims at the construction of a multi-km3 high-energy neutrino telescope in the Mediterranean Sea consisting of thousands of glass spheres (nodes), each of them containing 31 photomultiplier (PMT) of small photocathode area. The readout and data acquisition system of KM3NeT has to collect, treat and send to shore, in an economic way, the enormous amount of data produced by the photomultipliers. For this purpose, 31 high-resolution time-interval measuring channels are implemented on the Field-Programmable Gate Arrays (FPGA) based on Time to Digital Converter (TDC). TDC are very common devices in particles physics experiments. Architectures with low resources occupancy are desirable allowing the implementation of other instrumentation, communication and synchronization systems on the same device. The required resolution to measure both, time of flight and timestamp must be 1 ns. A 4-Oversampling technique with two high frequency clocks is used to achieve this resolution. The proposed TDC firmware is developed using very few resources in Xilinx Kintex-7.
- OSTI ID:
- 22390648
- Journal Information:
- AIP Conference Proceedings, Vol. 1630, Issue 1; Conference: VLVvT 13: 6. International Workshop on Very Large Volumte Neutrino Telescopes, Stockholm (Sweden), 5-7 Aug 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHERENKOV COUNTERS
DATA ACQUISITION SYSTEMS
IMPLEMENTATION
MEDITERRANEAN SEA
MULTIPARTICLE SPECTROMETERS
NEUTRINO DETECTION
PARTICLE IDENTIFICATION
PHOTOCATHODES
PHOTOMULTIPLIERS
READOUT SYSTEMS
RESOLUTION
SCINTILLATION COUNTERS
SPHERES
SYNCHRONIZATION
TELESCOPE COUNTERS
TIME-OF-FLIGHT METHOD