Ring Oscillator Measurements for Continuous Monitoring of Propagation Delay

This dataset contains measurements performed with ring oscillator sensors on FPGA-based electronic devices that operate as part of the low-level RF system in the European XFEL particle accelerator. The studied devices are Xilinx Virtex-6 XC6VLX130T FPGAs with speed grade -2. Measurements were performed between January and October of 2024, while the machine was in operation.FormatFiles are in parquet format. The columns are:<code>_time</code>: date and time of the measurement<code>host</code>: MicroTCA crate that contains the device<code>device</code>: Device within the MicroTCA crate (<code>host</code>)<code>id_number</code>: ID of the ring oscillator within the <code>device</code><code>counts</code>: Amount of oscillations of the ring oscillator measured in 500 milliseconds.

本数据集收录了基于现场可编程门阵列（FPGA，Field-Programmable Gate Array）的电子设备的环形振荡器传感器测量数据，此类设备作为欧洲X射线自由电子激光装置（European XFEL）粒子加速器低电平射频系统的组成部分运行。本次研究涉及的设备为赛灵思（Xilinx）Virtex-6 XC6VLX130T型现场可编程门阵列，速度等级为-2。所有测量工作于2024年1月至10月期间开展，彼时加速器整机处于运行状态。数据集文件采用帕奎特（Parquet）格式存储。各数据列字段说明如下：<code>_time</code>：测量的日期与时间；<code>host</code>：承载该设备的MicroTCA机箱；<code>device</code>：对应MicroTCA机箱（<code>host</code>）内的设备；<code>id_number</code>：该设备内部环形振荡器的编号；<code>counts</code>：500毫秒时长内测得的环形振荡器振荡总次数。