Article

The Resistance and Strength of Soft Solder Splices Between Conductors in MICE Coils

Inst. of Cryogenics & Superconductive Technol., HIT, Harbin, China
IEEE Transactions on Appiled Superconductivity (impact factor: 1.04). 07/2011; DOI:10.1109/TASC.2010.2087371 pp.1738 - 1741
Source: IEEE Xplore

ABSTRACT Two of the three types of MICE magnets will have splices within their coils. The MICE coupling coils may have as many as fifteen one-meter long splices within them. Each of the MICE focusing coils may have a couple of 0.25-meter long conductor splices. Equations for the calculation of resistance of soldered lap splices of various types are presented. This paper presents resistance measurements of soldered lap splices of various lengths. Measured splice resistance is shown for one-meter long splices as a function of the fabrication method. Another important consideration is the strength of the splices. The measured breaking stress of splices of various lengths is presented in this paper. Tin-lead solders and tin-silver solders were used for the splices that were tested. From the data given in this report, the authors recommend that the use of lead free solders be avoided for low temperature coils.

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Keywords

fabrication method
 
fifteen one-meter
 
lead free solders
 
low temperature coils
 
MICE
 
MICE coupling coils
 
MICE magnets
 
one-meter
 
paper presents resistance measurements
 
soldered lap splices
 
splices
 
three types
 
Tin-lead solders
 
tin-silver solders
 
various lengths
 
various types