直线对撞机相互作用区地面运动研究与模拟

SLAC场地的地震动模型

Ground Motion Model of the SLAC Site

我们提出了一个地面运动模型的SLAC网站。该模型是基于最近在SLAC进行的地面运动研究以及历史数据。该模型包括波动，扩散和系统的运动类型。尝试与可测量的二次属性的地面运动与更基本的特点，如分层的地质结构周围的地球，隧道的深度等，这个模型是一个重要的步骤，在未来的直线对撞机的网站进行评估。

Luminosity Performance of the Compact Linear Collider at 380 GeV with Static and Dynamic Imperfections

The Compact Linear Collider is one of the two main European options for a collider in a post Large Hadron Collider era. This is a linear $e^+e^-$ collider with three centre-of-mass energy stages: 380 GeV, 1.5 TeV and 3 TeV. The luminosity performance of the first stage at 380 GeV is presented including the impact of static and dynamic imperfections. These calculations are performed with fully realistic tracking simulations from the exit of the damping rings to the interaction point and including beam-beam effects in the collisions. A luminosity of $4.3\times10^{34}\,\text{cm}^{-2}\text{s}^{-1}…

正电子源建模：基于实验的基准测试

Modeling of the positron sources: an experiment-based benchmarking

本文开发了一种正电子源端到端仿真工具，并在SuperKEKB上通过实验验证，系统扫描关键运行参数后，仿真结果与实验数据及其他工具高度一致，为未来正电子源研究提供了可靠框架。

国际直线对撞机正电子阻尼环中电子云效应的研究

Investigation into electron cloud effects in the International Linear Collider positron damping ring

我们报告的电子云建设和不稳定性的国际直线对撞机正电子阻尼环的建模结果。更新的光学，摇摆磁铁，真空室的设计最近已开发的5 GeV，3.2公里的赛道布局。分析了环周围的同步辐射分布，包括漫射和镜面光子散射对真空室内表面的影响。这些结果为环的各个磁场区域的云堆积模拟提供了输入。由此获得的模拟云密度用于不稳定阈值计算。我们的结论是，在这个模型中采用的缓解技术将足以允许在设计操作规范的阻尼环的操作。

用于未来对撞机束流-束流模拟的现代粒子-in-单元代码

A modern particle-in-cell code for beam-beam simulations of future colliders

本文介绍开源粒子-in-单元代码 WarpX，通过与 GUINEA-PIG、CAIN 基准测试，证明其可复现束流-束流可观测量，是未来对撞机高保真束流-束流建模的可扩展平台。

新颖的超高亮度参数体系中的束-束相互作用

Beam-Beam Interaction in Novel, Very High Luminosity Parameter Regimes

为了实现亮度显着高于现有的机器，未来的存储环对撞机将需要在新的参数制度结合超低发射度，大Piwinski角和高束流电荷;实施技术，如“蟹腰”将增加进一步的挑战。了解在这些情况下的束-束相互作用，将是未来非常高的亮度对撞机的设计是必不可少的。最近的事态发展建模工具，用于研究束-束效应，能够调查相关制度，将进行讨论，并举例说明，包括测试与蟹腰碰撞DAFNE，将提交。

Data-driven modeling of beam loss in the LHC

In the Large Hadron Collider, the beam losses are continuously measured for machine protection. By design, most of the particle losses occur in the collimation system, where the particles with high oscillation amplitudes or large momentum error are scraped from the beams. The level of particle losses typically is optimized manually by changing multiple control parameters, among which are, for example, currents in the focusing and defocusing magnets along the collider. It is generally challenging to model and predict losses based on the control parameters due to various (non-linear) effects in …