Speaker: Algirdas Baskys
Abstract:
Conductor residual resistance ratio (RRR), a measure of conductivity of copper within the wire, is an important parameter for superconducting magnet electrical stability. Quality of wire, cabling deformation, heat-treatment parameters can all affect the RRR of a conductor, therefore RRR measurement forms an important part of electrical QC of Nb3Sn Rutherford cables used in AUP project.
This talk details the ongoing upgrades to the RRR measurement system in B58 that features a cryocooler and a sample mounting PCB that accommodates for the irregular shape of extracted strands from a Rutherford cable without deformation. The aim of the update is to allow for higher measurement throughput (doubling sample count), better system reliability and improved measurement accuracy.
Ian Pong