TRANSIENT HEAT-TRANSFER CHARACTERISTICS OF SUPERCRITICAL HELIUM AND STABILITY ANALYSIS OF CCICS

It is likely that a quench in the cable-in-conduit internally cooled s uperconductor (CCICS) is started by a quench of a single strand of the cable caused by strand motion. The disturbance due to strand motion i s highly localized and of short duration. Therefore, to determine the stability of CCICS, we need to analyze the stability of the strand sub ject to the localized and short duration disturbance. For this stabili ty analysis, we investigated the transient heat transfer from a single strand to supercritical helium (SHE) based on measured data. The pape r presents a model to determine the transient heat transfer and also t he results of stability analysis oi CCICS.