论文标题
质子改善计划II低温分配系统热力学设计
Proton Improvement Plan II Cryogenic Distribution System thermodynamic design
论文作者
论文摘要
质子改进计划II（PIPII）是在Fermilab建造的超导线性加速器，它将提供800 MEV质子束以用于中微子的生产。 Linac需要在80 K，5 K和2 K的温度下冷却，这将由氦冷冻液生产并由低温分布系统（CDS）分布而提供。主要基于每种温度下的Linac热负荷需求和允许的压降，我们对CD进行了初步的热力学设计。该设计还包含特殊要求，例如超导RF腔的受控和 /或快速冷却及其双重最大允许工作压力。本文介绍了PIPII CD的总体特征，氦气工艺电路的大小，不同的操作模式以及计算出符合这些操作模式的质量流量。
The Proton Improvement Plan II (PIPII) is a superconducting linear accelerator being built at Fermilab that will provide 800 MeV proton beams for neutrino production. The Linac requires cooling at 80 K, 5 K, and 2 K temperatures, which will be provided by cryogenic helium produced by a Helium Cryoplant and distributed by a Cryogenic Distribution System (CDS). Based primarily on the Linac heat load requirements at each temperature and the allowable pressure drop, we have made a preliminary thermodynamic design of the CDS. The design also incorporates special requirements such as controlled and or fast cooldown of the superconducting RF cavities and their dual maximum allowable working pressure. This paper presents the overall features of the PIPII CDS, sizing of helium process circuits, different operating modes, and calculated mass flow capacities that cater to these operating modes.
