47 Niedermayer, Philipp Geißler, René Singh, Rahul HES BEA 12th International Beam Instrumentation Conference JACoW Publishing, Geneva, Switzerland Saskatoon, Canada 10.18429/JACOW-IBIC2023-WE2C02 English 2 pages Controlling stored beams in particle accelerators requires specially designed RF signals, such as needed for spill control via transverse excitation. The software-defined radio (SDR) technology is adopted as a low cost, yet highly flexible setup to generate such signals in the kHz to MHz regime. A feedback system is build using a combination of digital signal processing with GNU Radio and RF Network-on-Chip (RFNoC) on a Universal Software Radio Peripheral (USRP). The system enables digitization of signals from particle detectors and direct tuning of the produced RF waveforms via a feedback controller – implemented on a single device. To allow for triggered operation and to reduce the loop delay to a few ms, custom OOT and RFNoC blocks have been implemented. This contribution reports on the implementation and first test results with beam of the developed spill control system. Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. ; 33, ; PUB:(DE-HGF)8, ; Accelerator Physics 09 Data Acquisition and Processing Platforms Contribution to a conference proceedings 2023 2023-09-10 - 2023-09-14 GSI-2024-00343 2023-09-10 - 2023-09-14 2023 https://repository.gsi.de/record/348519 https://doi.org/10.18429/JACOW-IBIC2023-WE2C02