论文标题
高光度LHC的倾斜孔孔 - 透明轨道校正器的设计
Design of a Canted-cosine-theta orbit corrector for the High Luminosity LHC
论文作者
论文摘要
高光度LHC需要将偶极轨道校正器分组为双光孔磁铁组件。它们以70毫米的孔径为100 a提供3.1 t的场。当前的标准设计是用色带电缆制成的古典余弦布局。但是,色带电缆的电绝缘材料不足以承受未来LHC操作的几年中预期的辐射负荷。基于使用聚酰亚胺绝缘子的耐辐射电缆的新设计,可以在其末期终止替代现有的轨道校正器。面临的挑战是设计一种直接适合现有位置的磁铁,并且可以使用与现有磁铁相同的母线,被动淬火保护和电源。我们提出了一个自我保护的cosine-theta(CCT)设计。我们借此机会探索CCT设计的新概念,以更具可持续的资源利用来生产具有成本效益和高质量的设计。新的轨道校正器设计满足了现场质量的高要求,同时保持在相同的机械量和最大激发电流之内。 瑞典大学和瑞典产业的合作是为了减少产生功能性CCT磁铁所需的时间的同时工程(CE)方法的开发和生产原型磁铁的开发和生产。磁铁的长CCT偶极子布局由两个线圈组成。超导体是一种在6个环1电缆的市售的0.33毫米电线。确定CCT布局的线圈组中的通道允许2 x 5电缆层。总共70个绕组使线圈电流可以保持在100以下A。我们将介绍详细的设计和初步淬火模拟。
The High Luminosity LHC requires dipole orbit correctors grouped in double aperture magnet assemblies. They provide a field of 3.1 T at 100 A in an aperture of 70 mm. The current standard design is a classical cosine-theta layout made with ribbon cable. However, the electric insulation of the ribbon cable is not radiation-resistant enough to withstand the radiation load expected in the coming years of LHC operation. A new design, based on a radiation-resistant cable with polyimide insulator, that can replace the existing orbit correctors at their end-of-life, is needed. The challenge is to design a magnet that fits directly into the existing positions and that can operate with the same busbars, passive quench protection, and power supplies as existing magnets. We propose a self-protected canted-cosine-theta (CCT) design. We take the opportunity to explore new concepts for the CCT design to produce a cost-effective and high-quality design with a more sustainable use of resources. The new orbit corrector design meets high requirements on the field quality while keeping within the same mechanical volume and maximum excitation current. A collaboration of Swedish universities and Swedish industry has been formed for the development and production of a prototype magnet following a concurrent engineering (CE) methodology to reduce the time needed to produce a functional CCT magnet. The magnet has a 1 m long CCT dipole layout consisting of two coils. The superconductor is a commercially available 0.33 mm wire with polyimide insulation in a 6-around-1 cable. The channels in the coil formers, that determine the CCT layout, allow for 2 x 5 cable layers. A total of 70 windings makes that the coil current can be kept below 100 A. We will present the detailed design and preliminary quench simulations.