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MQXF length
P. Ferracin
Video-meeting Structure WGSeptember 18th, 2014
Coil CAD model
18/09/2014Paolo Ferracin 2
MQXF magnet design
• Coil• Pole alignment key (G11)• Bolted collar (Al)• Bolted pads (iron)• Masters (iron)– For bladders
• Yoke (iron)• Aluminum shell– For pre-load
• Stainless steel shell– LHe containment
18/09/2014Paolo Ferracin 3
MQXF magnet design
• Coil• Pole alignment key (G11)• Bolted collar (Al)• Bolted pads (iron)• Masters (iron)– For bladders
• Yoke (iron)• Aluminum shell– For pre-load
• Stainless steel shell– LHe containment
18/09/2014Paolo Ferracin 4
MQXF magnet design
18/09/2014Paolo Ferracin 5
Axial loading and connection box update
• RE: threaded end plate (50 mm thick)– Axial pre-loading on LE
18/09/2014Paolo Ferracin 6
Axial loading and connection box update
• Piston support with grooves to provide space for Nb-Ti leads– Cable needs to be bent outwards
• Thread for rod extensions where second nut will be placed• ~70 t provided at room temperature
18/09/2014Paolo Ferracin 7
Axial loading and connection box update
• Removal of the axial pre-loading system– Still only 1 nut used
18/09/2014Paolo Ferracin 8
Axial loading and connection box update
• Status before connection box– 2 nut but no rod extension– Connection box will go on top (see later)
18/09/2014Paolo Ferracin 9
Axial loading and connection box update
• Hard (impossible?) to stay within bushing or nuts or rods
18/09/2014Paolo Ferracin 10
Axial loading and connection box update
• Support plate
18/09/2014Paolo Ferracin 11
Axial loading and connection box update
• Instrumentation plate– Wires coming out parallel to the leads
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Axial loading and connection box update
• 2 connections
18/09/2014Paolo Ferracin 13
Axial loading and connection box update
• Third connection
18/09/2014Paolo Ferracin 14
Axial loading and connection box update
• Top plate
18/09/2014Paolo Ferracin 15
MQXF magnet design
18/09/2014Paolo Ferracin 16
MQXF magnet design
18/09/2014Paolo Ferracin 17
Magnetic length of short model
MQXF magnet design
18/09/2014Paolo Ferracin 18
• From magnetic length to end of magnet (end-plate + connection box)– Connection side: 510 mm– Non-connection side: 214 mm
Q1• Connection side: from magnetic length to end of end-cover
– 301.5+238.5=540 mm (510 mm magnetic to end of magnet in MQXF)• Non-connection side: from magnetic length to Q1a-Q1b “middle point”
– 186.5+63.5=250 mm (214 mm magnetic to end of magnet in MQXF)
18/09/2014Paolo Ferracin 19
Q2• Connection side: from magnetic length to end of end-cover
– 325+234=559 mm (510 mm magnetic to end of magnet in MQXF)• Non-connection side: from magnetic length to Q1a-Q1b “middle point”
– 172+78=250 mm (214 mm magnetic to end of magnet in MQXF)
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Minimum distance between Q1a and Q1b magnetic lengths
18/09/2014Paolo Ferracin 21
• From magnetic length to end of magnet (end-plate + connection box)– Non-connection side: 214 mm– Minimum distance: 214+214+22 (?) = ~ 450 mm
Axial loading and connection box update
• Still to be added– Lyra
• between yoke and connection box or pig-tail
• If bus-bar outside cold mass, no issue
– End cover
18/09/2014Paolo Ferracin 22
Axial loading and connection box update
• Still to be added– Lyra
• between yoke and connection box or pig-tail
• If bus-bar outside cold mass, no issue
– End cover
18/09/2014Paolo Ferracin 23
