A Wire Position Monitor System for the 1.3 GHZ Tesla-Style Cryomodule at the Fermilab New-Muon-Lab Accelerator

TL;DR

This paper presents a wire position monitoring system for a 1.3 GHz cryomodule at Fermilab, demonstrating high-resolution measurements of pipe position and potential vibration detection during RF commissioning.

Contribution

It introduces a novel wire position monitor system tailored for cryomodule diagnostics, with preliminary results and potential vibration monitoring capabilities.

Findings

High-resolution position measurements achieved

System successfully used during initial cool down

Potential for vibration detection discussed

Abstract

The first cryomodule for the beam test facility at the Fermilab New-Muon-Lab building is currently under RF commissioning. Among other diagnostics systems, the transverse position of the helium gas return pipe with the connected 1.3 GHz SRF accelerating cavities is measured along the ~15 m long module using a stretched-wire position monitoring system. An overview of the wire position monitor system technology is given, along with preliminary results taken at the initial module cool down, and during further testing. As the measurement system offers a high resolution, we also discuss options for use as a vibration detector.