Simulation of microphonic effects in high $Q_L$ TESLA cavities during CW operations

TL;DR

This paper introduces a high-performance simulation package for superconducting cavities to analyze microphonic effects during CW operations, aiding LLRF controller design by capturing effects across multiple timescales.

Contribution

A dedicated C++/Python simulation tool that models microphonics and other effects in superconducting cavities during CW operation, improving the speed and accuracy of LLRF system design.

Findings

Simulation captures microphonic effects at relevant timescales

Enables faster LLRF controller development

Provides detailed insights into cavity behavior during CW operation

Abstract

This document describes a new package to compute high performance simulations of a module of superconducting accelerating cavities from the LLRF controller perspective. The reason to make a dedicated C++/Python package is to simulate all the effects that arise during Continuous Wave (CW) operations at different timescales to speed-up the LLRF controller design. In particular the speed of the sampling rate of the ADCs used in a LLRF control system (some MHz) are $10^4$ - $10^5$ times faster than typical mechanical resonances and microphonics frequencies.