Time-resolved thermometry for superconducting deflecting cavity development

A time-resolved thermometry system has been developed for the superconducting deflecting cavity development at Argonne National Lab. The time resolution of the thermometry can be as fast as 50μs. The spatial distribution as well as the temporal evolution of the temperature rises can be recorded. Usi...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2014-06, Vol.748, p.7-11
Main Authors: Yang, Yawei, Wu, Genfa, Nassiri, Alireza
Format: Article
Language:English
Subjects:
Accelerators
Argon
Cryogenic thermometry
Deflection
Evolution
Holes
Multipacting
Q-slope
Spatial distribution
Superconducting deflecting cavity
Superconductivity
Temporal logic
Thermal breakdown
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A time-resolved thermometry system has been developed for the superconducting deflecting cavity development at Argonne National Lab. The time resolution of the thermometry can be as fast as 50μs. The spatial distribution as well as the temporal evolution of the temperature rises can be recorded. Using this system, we demonstrate that the common loss mechanisms in a superconducting rf cavity have different temporal evolution characteristics. Thus we can make use of these characteristics to locate and identify different losses with better accuracy. Two of the four fabricated deflecting cavities have been investigated, and the thermometry system has successfully located and identified the cavity limitations. Based on the thermometry findings, proper treatments have successfully improved the cavity performance.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2014.01.016