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Description
This paper presents a method to mitigate screening current by manipulating temperature in a high temperature superconductor (HTS) pancake coil. Named as “Thermal Eraser”, it utilizes an electric heater that is optimally designed to “create” a target temperature profile in the HTS pancake coil. The key idea is to control field and temperature dependent critical current Ic (B,T) of “individual” turns in the HTS coil by an optimal operation of the heater, i.e., Thermal Eraser. Here we report: (1) principle of operation; (2) design of an electric heater that is dedicated to an REBCO test pancake coil; (3) construction and operation of the heater to demonstrate the feasibility of Thermal Eraser experimentally.
Acknowledgement
This work was supported by Samsung Research Funding & Incubation Center of Samsung Electronics under Project Number SRFC-IT1801-09.
