Optimization of the Intercept Temperature for High Temperature Superconducting Current Lead

Yang, Suntao; Pfotenhauer, John M.

doi:10.1007/978-1-4613-0373-2_73

Cited by 12 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat leakage through current leads is a significant factor in cryogenic load for many high field superconducting magnet devices. Thus, over the years a number of lead designs to minimize cryogenic load have been proposed and even greater variety of techniques has been used for their fabrication [1]- [5].…”

Section: Introductionmentioning

confidence: 99%

Electrical Contact Resistance of Multi-Contact Connector in Semi-Retractable Current Lead

Choi

Kim

2011

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

Heat leakage through current leads is the dominant contributor to cryogenic heat load for various high field magnets. The semi-retractable current lead is a good option because the conductive heat leak can be eliminated after the magnet is charged. It is composed of a normal metal element and an HTS element. The normal metal element is disengaged from the HTS element through the multi-contact connector without disturbance to the insulating vacuum space and without requiring complete removal of the normal metal element. In this paper, the electrical contact resistance of multi-contact connector is measured to confirm the feasibility of our application. The effects of current level, operating temperature and size on the electrical contact resistance in a lockable set are also discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrical Contact Resistance of Multi-Contact Connector in Semi-Retractable Current Lead

Choi

Kim

2011

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

show abstract

“…Since the heat leakage through the leads is a major factor in heat budget Manuscript for many high-field magnets, a number of lead designs to minimize the cryogenic load have been proposed and developed [3]- [7]. We have proposed the concept of the semi-retractable HTS current lead that will be applied to a 21 T FT-ICR magnet system [8].…”

Section: Introductionmentioning

confidence: 99%

Semi-Retractable Current Leads for a 21 T FT-ICR Magnet System

Choi¹,

Painter

Kim

et al. 2008

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

The development of the semi-retractable current leads for a 21 T Fourier Transform Ion Cyclotron Resonance (FT-ICR) superconducting magnet system is presented. The semi-retractable current leads are composed of a normal metal element, conducting the current from room temperature to intermediate temperature, and an HTS element, conducting the current down to liquid helium temperature. An HTS element is partly immersed in liquid helium and the joint between the normal metal and HTS element is continuously refrigerated by a cryocooler. After magnet energization the metal element is disengaged from the HTS element without breaking vacuum to the insulating vacuum space. In the paper, the optimized dimensions of the leads are presented in order to minimize the thermal heat load when carrying operational current with some margin. The intermediate block with a lockable set point and the insulating vacuum system are fabricated and the adaptability and reliability are tested during engage and disengage performance. The effects of vacuum level and performance cycle on the electrical contact resistance in a lockable set are also investigated.

show abstract

Optimal Integration of Binary Current Lead and Cryocooler

Chang

Sciver

2002

Cryocoolers 10

View full text Add to dashboard Cite

Optimization of the Intercept Temperature for High Temperature Superconducting Current Lead

Cited by 12 publications

References 6 publications

Electrical Contact Resistance of Multi-Contact Connector in Semi-Retractable Current Lead

Electrical Contact Resistance of Multi-Contact Connector in Semi-Retractable Current Lead

Semi-Retractable Current Leads for a 21 T FT-ICR Magnet System

Optimal Integration of Binary Current Lead and Cryocooler

Contact Info

Product

Resources

About