SQXF Coil 2 Impregnation Status & Plan

Fred Nobrega

09/09/2014

SQXF Coil 2 Status 9/9/2014 2

SQXF Coil 2 Status Outline

• Splice block removal, bolts seized– Next coil use boron nitride

• Power lead splice complete– SnPb solder & activated flux used– Very difficult using silver solder and low chloride flux (Nokorode)

• Heater/VT trace hi-pot test passed, 1kV• Straight section (poles) preparation complete• 2 voltage taps out of place requiring jumpers, DR written.

(photos)• Quench heater over saddle/splice blocks procedure. (photos)• Applied mold release to impregnation tooling• Plan

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 3

SQXF Coil 2

• Seized bolts – At coil winding use boron nitride

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 4

SQXF Coil 2

• Power lead splice complete– SnPb solder & activated flux used– Very difficult using silver solder and low chloride flux

(Nokorode)

Pre-tinning of reacted cable

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 5

SQXF Coil 2

• Heater/VT trace hi-pot test passed, 1kV

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 6

SQXF Coil 2

• Straight section (poles) preparation complete

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 7

SQXF Coil 2

• 2 voltage taps out of place requiring jumpers, DR written

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 8

SQXF Coil 2

• 2 voltage taps out of place requiring jumpers, DR written.

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 9

SQXF Coil 2

• Heater/VT trace over saddle/splice blocks procedure?

Fred Nobrega

SQXF Coil 2 Status 9/9/2014 10

SQXF Coil 2 Near Term Plan

• Install shell and form blocks• Roll assembly • Prepare inner surface of coil• Install base plate, stiffener plate, end plates• Epoxy impregnate (pump down) ~ 9/22

Fred Nobrega