Fermilab SRF cryomodule operational experience

TL;DR

This paper reports on the initial cooldown and operational experience of a 1.3 GHz cryomodule at Fermilab's New Muon Lab, highlighting design constraints and system performance in a novel cryogenic setup.

Contribution

It presents the first operational experience of a 1.3 GHz cryomodule with specific cooling constraints at Fermilab's New Muon Lab.

Findings

Successful cooldown and operation of the cryomodule

Validation of design constraints and cooling procedures

Insights into cryogenic system performance

Abstract

Fermi National Accelerator Laboratory is constructing an Advanced Accelerator Research and Development facility at New Muon Lab. The cryogenic infrastructure in support of the initial phase of the facility consists of two Tevatron style standalone refrigerators, cryogenic distribution system as well as an ambient temperature pumping system to achieve 2 K operations with supporting purification systems. During this phase of the project a single Type III plus 1.3 GHz cryomodule was installed, cooled and tested. Design constraints of the cryomodule required that the cryomodule individual circuits be cooled at predetermined rates. These constraints required special design solutions to achieve. This paper describes the initial cooldown and operational experience of a 1.3 GHz cryomodule using the New Muon Lab cryogenic system.