Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 40: Instrumentation IX

HK 40.6: Talk

Wednesday, April 1, 2020, 18:15–18:30, J-HS K

A Controller for the Crystal Barrel Sampling ADCs — •Knaust Jens and Müllers Johannes for the CBELSA/TAPS collaboration — Helmholtz-Institut für Strahlen- und Kernphysik, Bonn, Germany

The CBELSA/TAPS experiment at the accelerator ELSA (Bonn) performs photo-induced baryon spectroscopy. For the readout of the Crystal Barrel calorimeter, a new generation of data acquisition modules (Sampling ADCs) has been developed. Whilst these send the acquired event data directly via an Ethernet link, they rely on further interfaces for operation.

The controller designed and presented in this talk integrates the SADCs into the setup of the CBELSA/TAPS experiment. It supplies the experiment’s trigger and synchronization logic, and access for a monitoring and control interface. For debugging and programming purposes, it is also possible to remotely access the JTAG interface of the modules.

The design’s central control element is a Xilinx Zynq, which fuses a processor with an FPGA. This combines the advantages of both systems and is used to implement the remote JTAG interface as well as a convenient control interface. This browser based interface allows monitoring of all modules as well as more advanced tasks like reprogramming of their firmware.

The talk will present aspects of the hardware design such as the implementation of the remote JTAG implementation (Xilinx Virtual Cable) in the Linux subsystem.