9-15 June 2018
Woodlands Conference Center
America/New_York timezone
**** See you at Real Time 2020 ****

A Zynq – based flexible ADC architecture combining real-time data streaming and transient recording

14 Jun 2018, 14:35
1h 30m
Woodlands Conference Center

Woodlands Conference Center

159 Visitor Center Dr, Williamsburg, VA 23185
Poster presentation Data Acquisition Poster 2

Speakers

Dr Gabriele Manduchi (Consorzio RFX, Corso Stati Uniti, 4 35127, Padova, Italy) Andrea Rigoni (Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA))

Description

The RFX-mod2 Nuclear Fusion experiment is an upgrade of RFX-mod. Among the other improvements in machine structure and diagnostics, a larger number of electromagnetic probes (EMs) is foreseen to provide more information about plasma instabilities and to allow an improved real-time plasma control. An Analog to Digital Converter (ADC) architecture able to provide both transient recording and real-time streaming is foreseen in RFX_mod2. Transient recording provides full speed data acquisition (up to 1 MSample/s) by recording data in local memory and reading memory content after the plasma discharge. Real-time streaming of subsampled data is required for active control. The chosen technology is based on the XILINX Zynq architecture that provides in the same chip a multicore ARM processor tightly couple to a FPGA. Time critical functions carried out by the FPGA in this context are:
1) The management of a circular data buffer and the DMA transfer in RAM of pre and post trigger samples after the trigger has been received;
2) Antialiasing filtering and subsampling of the samples to be streamed. The resulting samples are enqueued in a FIFO accessed by the processor.
The functions carried out by the processor are:
1) The management of the configuration setting, received via TCP/IP or HTTP. The processor validates the configuration and write the appreciate registers in the FPGA;
2) Offline data readout of acquired samples in transient recording;
3) Network data streaming of subsampled data read from the FIFO and sent in UDP packets to the active plasma control system.

Description Zynq DAQ
Speaker Gabriele Manduchi
Country Italy
Institute Consorzio RFX
Minioral Yes

Primary authors

Dr Gabriele Manduchi (Consorzio RFX, Corso Stati Uniti, 4 35127, Padova, Italy) Andrea Rigoni (Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA)) Mr Cesare Taliercio (Consorzio RFX) Adriano Francesco Luchetta (Consorzio RFX) roberto cavazzana (Consorzio RFX) Dr Marco Gottardo (Consorzio RFX)

Presentation Materials