Improvements to the Cavity Simulator for European Spallation Source | Zendy

Maciej Grzegrzolka | Zendy; Krzysztof Czuba | Zendy

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Improvements to the Cavity Simulator for European Spallation Source

Author(s) -

Maciej Grzegrzolka,

Krzysztof Czuba

Publication year - 2025

Publication title -

ieee access

Language(s) - English

Resource type - Magazines

SCImago Journal Rank - 0.587

H-Index - 127

eISSN - 2169-3536

DOI - 10.1109/access.2025.3590288

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

The Cavity Simulator for the European Spallation Source (ESS) is a specialized device created to evaluate the Low-Level Radio Frequency control systems utilized in the medium- and high-beta sections of the ESS’ linear accelerator (linac). This equipment replicates the behavior of a single RF station, including a high-power RF amplifier and a superconducting cavity with piezo tuners. This is the world’s first device capable of providing such complex functionalities and simulation scope. The device was used to install LLRF control systems in dedicated sections of the ESS’ linac. The Cavity Simulator is continuously being developed to extend its scope and functionality. This paper presents some recent improvements implemented in this device. These include slow resonance frequency drift simulation, beam current, amplifier nonlinearity, data acquisition system, and synchronization. In addition, the device hardware and operating principles are discussed, along with the measurement results that demonstrate the proper operation of the designed system.

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