Several studies are on-going at CERN in the framework of the Physics Beyond Collider study group, with main aim of broadening the physics research spectrum using the available accelerator complex and infrastructure. The possibility to design a layout that allows fixed-target experiments in the primary vacuum of the CERN Large Hadron Collider (LHC), without the need of a dedicated extraction line, is part of these studies. The principle of the layouts presented in this paper is to deflect beam halo protons on a fixed-target placed in the LHC primary vacuum, by means of the channeling process in bent crystals. Moreover, the presence of a second bent crystal adjacent to the target opens a unique opportunity for the first direct measurement of electric and magnetic dipole moments of short-lived baryons. Two possible layouts are reported, together with a thorough evaluation on their expected performance and impact on LHC operations.

欧洲核子研究中心正在“超越对撞机”研究小组的框架内进行一些研究，其主要目的是利用现有的加速器装置和基础设施来拓宽物理学研究范围。这些设计的一部分是设计一种布局，允许在CERN大型强子对撞机（LHC）的主真空中进行固定目标实验，而无需专用提取线。本文提出的布局原理是，通过弯曲晶体中的沟道过程，将束晕质子偏转到放置在LHC初级真空中的固定目标上。此外，与靶标相邻的第二弯曲晶体的存在为短寿命重子的电和磁偶极矩的首次直接测量提供了独特的机会。报告了两种可能的布局，