DR Layout Description ILC DR Technical Baseline Review Frascati, July 7, 2011 Mark Palmer Cornell University.

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Presentation transcript:

DR Layout Description ILC DR Technical Baseline Review Frascati, July 7, 2011 Mark Palmer Cornell University

Introduction Dave has provided an overview of the overall layout This talk will focus on key elements of the present layout and the modifications from the previous baseline –Principally: Straights and Alcove/Cavern Layout Beam Line Spacing/Tunnel Diameter Issues –CFS Discussions included: Rough Arc Estimate Preliminary discussion of utilities specifications July 7, 2011 ILC DR Technical Baseline Review - Frascati, July 7-8,

Straights Layout Layout Issues in Straights –Minimize length consistent with 3.2km design requirements –Maintain injection/extraction layout –Minimize phase adjustment trombone –Scale the circumference chicane with the size of the ring –Space in RF & wiggler sections for all design options (low & high power, 10Hz ops) –Added space in wiggler section for photon absorber July 7, 2011 ILC DR Technical Baseline Review - Frascati, July 7-8,

Interface with CFS June 2, 2011 Meeting –Review shorter straights RF-Wiggler Layout Cavern/Alcove Requirements –Beam Line Spacing Presently set to 1.3m –Set tunnel diameter –Rough estimate of arcs July 7, 2011 ILC DR Technical Baseline Review - Frascati, July 7-8,

RF Longitudinal Picture Date Event Global Design Effort 5 Positron Ring #1 Positron Ring #2 RF Cavity Placement

Wiggler Cell Date Event Global Design Effort 6

RF-Wiggler Straight July 7, 2011 ILC DR Technical Baseline Review - Frascati, July 7-8,

Tunnel Diameter Issues June 2, 2011 CFS Meeting Global Design Effort 8 42cm dia 5.5 m dia 1.42 m 2.6 m 6.0 m dia Assumptions: 1)Remove large foot floor supports 2)Assume waveguides are re- routed 3)Reduce scale to 90% (~half of potential reduction with 500MHz  650MHz cavities 4)1+2  0.85 × height, 3 gives another factor of 0.9 5)NOTE: No cryostats are located directly above each other when longitudinal positions are accounted for RF Alcove 2.09 m ~0.9 m Distributed PS Racks?

Injection-Extraction Straight July 7, 2011 ILC DR Technical Baseline Review - Frascati, July 7-8,

The Basic Racetrack July 7, 2011 ILC DR Technical Baseline Review - Frascati, July 7-8,