The ATLAS Liquid Argon Calorimeter group has been working on an upgrade of its trigger readout electronics. As part of this upgrade, new trigger "Super Cells" will be introduced, increasing the granularity of the trigger readout by a factor of ten with respect to Run 2. While the production and installation of the new electronics is underway, a calibration framework for the energy and timing measurement of the Super Cell readout is also being developed. The framework is created by using data taken in calibration runs with a pulsing system to establish the Super Cell pulse shape and other parameters, i.e. pedestal level, equivalent transverse energy for one ADC bit, and coefficients of an optimal filtering algorithm for energy calculation. The new hardware has been verified to meet the design specifications using the framework. A new simulation of the calorimeter, using the calibrated parameters obtained during the commissioning of the new trigger readout system, is also being developed. The simulation takes into consideration the long bipolar pulse shape for any number of interaction per bunch crossing. This accounts for highly realistic out-of-time pileup effect.

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LHC-ATLAS 第一阶段升级：液氩量热仪新触发读出系统的校准和模拟

ATLAS 液氩量热仪小组一直致力于升级其触发读出电子设备。作为此次升级的一部分，将引入新的触发器“超级电池”，相对于运行 2，将触发器读数的粒度增加 10 倍。在生产和安装新电子设备的同时，校准框架用于超级电池读数的能量和时间测量也正在开发中。该框架是通过使用脉冲系统校准运行中获取的数据来创建的，以建立 Super Cell 脉冲形状和其他参数，即基座电平、一个 ADC 位的等效横向能量以及用于能量计算的最佳滤波算法的系数。新硬件已经过验证，符合使用该框架的设计规范。使用在新触发读出系统调试期间获得的校准参数的热量计的新模拟也正在开发中。模拟考虑了每束交叉的任意数量的相互作用的长双极脉冲形状。这说明了高度逼真的超时堆积效应。