1

New experimental plans for

Jc and Magnetization measurementJohn Himbele, Arnaud Badel, Pascal Tixador

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Field available at LNCMI

M8 (future hybrid site) : 19 T in Ø 170 mm

M10 : 10 T in Ø 370 mm

Available for experiments in March-April

Available for experiments in May-June

3

Experimental setup in Ø 170 mm

Experimental setup properties

Max. Current 1.8 kA

Temperature 4.2 K – 77 K

Sample length 240 mm

Sample width 4-12 mm

Max. Field lg 19 T

Field orientation Up to 14 T under 8°

Ø115

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Expected measurement in Ø 170 mm

Experimental setup properties

Max. Current 1.8 kA

Temperature 4.2 K – 77 K

Sample length 240 mm

Sample width 4-12 mm

Max. Field lg 19 T

Field orientation Up to 14 T under 8°

Ø115

• Critical current over long length : problem of max. current ?

• Magnetization measurements under high field / small anglesUsing hall sensor and pick up coil

• Behavior of tapes under non-homogeneous field : effect of width ?

5

Experimental setup in Ø 370 mm : test of racetracks

Experimental setup properties

Max. Current 3 kA

Temperature 4.2 K

racetrack length < 240 mm

Max. Field 10 T

Field orientation Up to 10°

Expected measurement

• Test of cable configurations : twisted stack – face-to-face ?

• Current distribution

• Field drift due to magnetization

• Effect of angle on magnetization