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RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26, 2013 Steve Virostek - Engineering Division Lawrence Berkeley National Laboratory
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Topics RF sensing loops Adjustable bead pull tuners Tunable end blocks Support/assembly stand
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 RF Sensing Loops Detailed design completed by LBNL Uses an off-the-shelf Type N connector assembly Quote obtained from Ceramtec for full assemblies (~$400 each) 48 each required for full RFQ
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 RF Sensing Loop Design Sensing loop Type N connector O-ring seal
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Installed RF Sensing Loop RFQ wall No RF seal needed
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 RF Sensing Loop Drawing X
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Adjustable Bead Pull Tuners Used for single module and full RFQ bead pulls 80 each required for the 4-module RFQ Adjustment with external bolt Position determined by external scale and/or depth gauge RF seal only – no vacuum Drawings complete – prototype soon
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Adjustable Bead Pull Tuners Installed tuners
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Adjustable Bead Pull Tuners Tuner slugs protrude Into RFQ cavity
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Adjustable Bead Pull Tuners Section view of installed tuners
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Adjustable Bead Pull Tuners Moving slug Fixed body Captured bolt Scale
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Adjustable Tuner Assembly Dwg X
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Tunable End Plates Allows for end frequency adjustment during single/full module bead pulls Used with cutback blocks for inner modules Adjustment with four external bolts linked by sprockets/chain RF seal only – no vacuum Drawings still to be done
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Tunable End Plates X Tunable end plate Dummy cutback block
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Tunable End Plates X Tunable end plate Dummy cutback block
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Tunable End Plates X End tuner slug Bead/string holes Drive bolts Sprockets/chain
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Tunable End Blocks RF canted springs Snap ring
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 6-Strut Support Structure Similar idea used on SNS RFQ Connected RFQ modules behave as a single rigid body Easy alignment and positioning Non-redundant support – no thermal or mechanical loads imparted (kinematic) Inexpensive – welded tubular steel Scheme being developed to allow assembly of modules in place on support
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 SNS RFQ Support w/Strut Bosses
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 SNS RFQ Support Drawing
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Two SNS Modules in Place Vertical Lateral Vertical Lateral Axial
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Full SNS RFQ on Six Struts
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Support Scheme For heavy hardware w/orthogonal struts, use 3 vertical, 2 lateral and 1 axial strut 3 vertical struts not coplanar and are spread along length to minimize bending Sets of lower load struts can be used for each module during assembly on stand Redundant struts can be added for extra support during shipping of assembled RFQ
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 6-Strut Support Scheme V V VL L L L A A VV L V L V VV A A V TOP VIEW SIDE VIEW : Vertical strut : Lateral strut : Axial strut L A
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Steve Virostek: RFQ Subcomponents PXIE RFQ Fabrication Readiness Review LBNL – June 26-27, 2013 Individual 6-Strut Assembly Scheme VL L TOP VIEW SIDE VIEW V VV L L L L A AA V V L L VL L V VV L L L L A AA V V L L VV V L V V V A V L L AA L A A L L A VV V L V V V A V L L L A A L L A
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