“Option B” Spreader/Recombiner Design Review Beam Transport S/R Layouts
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Transcript of “Option B” Spreader/Recombiner Design Review Beam Transport S/R Layouts
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June 1, 2009
12GeV Upgrade - Beam Transport
“Option B”Spreader/Recombiner Design Review
Beam Transport S/R Layouts
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Outline
• Introduction• Beam Transport S/R Layouts• Status/Summary
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Introduction• The 12GeV upgrade requires
extensive modifications to the spreader and recombiner regions of the machine
• These are the most congested regions in the beam transport system
• Goal to reuse as much of the existing hardware as possible– Complicated by incomplete
documentation of girders/bracketry
• The 12GeV 2008 layouts never progressed beyond the rough 2D songsheet level
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Introduction – cont’d
Option B Layouts:– Established symmetry between spreader/recombiner
• Reduces layout design effort– Fewer unique dipole bracket designs– Step height ratios are consistent between S/R
» Allows consistent quad layout between S/R– Include new septa layout(Tief layout) in the east spreader– Rotates several existing girders to “fix” element sequence
(BPM-Quad-Correctors) – Ops request– Quads positioned based on step height ratios– Requires no change to matching section quad girder layouts– Significant effort has been made to gather and model as-built
S/R information
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Beam Transport S/R Layouts
• Two spreader regions– East and west spreaders
• Three recombiner regions– East, west and transport recombiners
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Beam Transport S/R Layouts – East Spreader
Current Configuration
June 2008 12GeV Configuration
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Beam Transport S/R Layouts – West Spreader
Current Configuration
June 2008 12GeV Configuration
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Beam Transport S/R Layouts – East Spreader
12GeV Option B Configuration
•Replaced 2m dipole in Hall D line with three 1m dipole magnets
•Rotated 3S03 girder to put BPM upbeam of quad
•Added BPM in 7 line, IPM7S03A per I&C’s CR 08-040
•Incorporated the Tiefenback septa layout
•Quadrupoles match requirements set by Alex
•Layout requires only three girders be rebuilt and minor mods to three others
Highlights…
June 2008 12GeV Configuration
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Beam Transport S/R Layouts – East Recombiner
•Rotated 1, 3, 5, & 7 line girders in the “step” to put BPM upbeam of the quad (exceptions: 3R08 & 7R08)
•Added BPM in line 7, IPM7R07A per I&C’s CR 08-040
•Quadrupoles match requirements set by Alex
•Layout requires only two girders to be rebuilt and minor mods to two others
Highlights…
12GeV Option B Configuration
June 2008 12GeV Configuration
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Beam Transport S/R Layouts – West Spreader
Highlights…
12GeV Option B Configuration
•Added BPMs in lines 6 &8, IPM6S03A & IPM8S03A per I&C’s CR 08-040
•Quadrupoles match requirements set by Alex
•Layout requires only one girder to be rebuilt and minor mods to five others
June 2008 12GeV Configuration
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Beam Transport S/R Layouts – West Recombiner
Highlights…12GeV Option B Configuration
•Added BPMs in lines 6 & 8, IPM6R07A & IPM8R07A per I&C’s CR 08-040
•Quadrupoles match requirements set by Alex
•Layout requires minor mods to five girders
June 2008 12GeV Configuration
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Beam Transport S/R Layouts – Transport Recombiner
Highlights… 12GeV Option B Configuration
•Added vertical correctors at 6T09, 8T07, & 8T09 to meet 12GeV BdL specs
•New correctors required small shifts in the 6 & 8 line quads relative to the data transmitted to Alex… preparing request to CASA to evaluate alternate AT quad layout for use in all west S/Rs
•Quadrupoles match requirements set by Alex
•Layout requires minor mods to eight girders in the “step”
June 2008 12GeV Configuration
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Status/Summary
• Still expect small changes to the S/R layouts• Design efforts are focused on items not likely to be impacted by layout
changes– Will hold-off on the design of the vertical support stands until layout
has “totally frozen after feedback from this review” • Dipole & girder support arm locations laid in to the 95% level… still
refining a few areas– Bracket designs ~80% complete
• We have nearly completed the new and modified quad girder designs and associated detail drawings
• New and modified dipole vacuum chambers designs are ~50% complete– Looks like ~50% of the total will be recycled from existing machine
• Will begin detailed septa vacuum chamber design this month
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Beam Transport Layouts – Selected Images