ILC Re-baseling

Joint CES & CLIC C&S WG

9 September 2009

J.Osborne / V.Kuchler / A.Enomoto

• SB2009 alternatives :– Single tunnel (Klystron Cluster or Distributed

RF (DRFS) configuration)– Central Region Integration– Positron Source – System moved to end of

main linac– Damping Ring – 3.2km long– Ring to Main Linac – Single stage compressor

Accelerator Design & Integration Meeting DESY 28-29th May 2009

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CFS Points-of-ContactCFS Points-of-ContactElectron SourceElectron Source

Axel Brachman & John Sheppard Axel Brachman & John Sheppard - - Tom Lackowski Tom Lackowski (supported by M+W Zander)(supported by M+W Zander)

Positron SourcePositron SourceJim Clarke Jim Clarke - - John OsborneJohn Osborne

Damping RingDamping RingSusanna Guiducci Susanna Guiducci - - Tom LackowskiTom Lackowski

Ring to Main LinacRing to Main LinacNikolay Solyak Nikolay Solyak - - Vic Kuchler (supported by M+W Zander)Vic Kuchler (supported by M+W Zander)

Main LinacMain LinacChris Adolphsen (Klystron Cluster) - Chris Adolphsen (Klystron Cluster) - Tom LackowskiTom LackowskiShigeki Fukuda (DRFS) Shigeki Fukuda (DRFS) - - Atsushi EnomotoAtsushi Enomoto

Beam Delivery SystemBeam Delivery SystemAndrei Seryi, Andrei Seryi, Deepa Angal-KalininDeepa Angal-Kalinin - - John OsborneJohn Osborne

CFS AD&I MEETING AGENDA Revised August, 31, 2009

Daresbury Laboratory, UKSeptember 3-4, 2009

Spetember 3, 2009 September 4, 2009

Regional Meeting Times Topic Area System Representatives Topic Area System Representatives

0100-0215 SLAC 0900-1015 DL, UK General Introduction In-House Participants Damping Ring S. Giuducci0300-0415 FNAL 1700-1815 KEK

0215-0230 SLAC 1015-1030 DL, UK Break Break0415-0430 FNAL 1815-1830 KEK

0230-0400 SLAC 1030-1200 DL, UK e+ Source J. Clarke Beam Delivery System D. Angal-Kalinin0430-0600 FNAL 1830-2000 KEK N.Collomb

0400-0500 SLAC 1200-1300 DL, UK Lunch Lunch0600-0700 FNAL 2000-2100 KEK

0500-0630 SLAC 1300-1430 DL, UK RTML N. Solyak General Review In-House Participants0700-0830 FNAL 2100-2230 KEK

0630-0700 SLAC 1430-1500 DL, UK Break Break0830-0900 FNAL 2230-2300 KEK

0700-0800 SLAC 1500-1600 DL, UK e- Source A. Brachman Main Linacs C. Adophsen0900-1000 FNAL 2300-2400 KEK J. Shepard

0800-0900 SLAC 1600-1700 DL, UK Overview with E. Paterson E. Paterson Overview with E. Paterson E. Paterson1000-1100 FNAL 0000-0100 KEK

Material will be posted on Indico :

http://ilcagenda.linearcollider.org/conferenceDisplay.py?confId=4146

3.2km long ‘racetrack’ damping ring

Beam dumps have been added (all cavern dimensions to be reviewed)

5.2m diameter Single tunnel beyond shafts 2 and 3

Tunnel enlargement (9.5m width) in Source areas

5.2m diameter service tunnel and machine tunnel leading up to experimental area

Interaction Region

Main Beam dumps need to moved to ‘south side’ ie opposite side of DR pointing downwards on this drawing.

This means, due to Muon radiation, level of service tunnel needs to be adjusted

Note : Some of these issues at refinments of the RDR rather than SB2009 !

Service tunnel revised layout

Service tunnel revised layout – Dump is below service tunnel

Service tunnel revised layout – Dump is below service tunnel

Tunnel enlargement (9.5m width) in Source areas

This size of this enlargement needs to be revised :

3d model from Daresbury due this week (AUTOcad already available)

Tunnel enlargement (9.5m width) in Source areas needs to be reviewed (transport corridor on one side is acceptable?)

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• Klystron Cluster power distribution systemKlystron Cluster power distribution system

A Klystron Cluster with 70 klystrons feeds 64 accelerator modules.

RDR X 70 RDR X 64

Long high-power waveguides

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• 5 Reference slides: RF Cluster Scheme,5 Reference slides: RF Cluster Scheme,

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Klystron Cluster AlternativeKlystron Cluster Alternative• This Was the Process Used to Evaluate the Klystron Cluster This Was the Process Used to Evaluate the Klystron Cluster

AlternativeAlternative

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Working Assumptions (WA) for SB2009 - 2aWorking Assumptions (WA) for SB2009 - 2a

““Single tunnel solution for the Main Linacs and Single tunnel solution for the Main Linacs and RTML, with two possible variants for the HLRFRTML, with two possible variants for the HLRF

(a. Klystron Cluster Scheme)(a. Klystron Cluster Scheme)• This Evaluation has been Completed for USThis Evaluation has been Completed for US• Civil Costs were reduced ~25% (~$300M)Civil Costs were reduced ~25% (~$300M)• 3 Shafts were Added3 Shafts were Added• 4 Surface Sites were Added4 Surface Sites were Added• 10 Buildings for Klystron Cluster Surface Equipment 10 Buildings for Klystron Cluster Surface Equipment

were Addedwere Added• 28 Refuge Areas were Added in Accelerator Tunnel28 Refuge Areas were Added in Accelerator Tunnel• Other Cavern Volume was Reduced 25%Other Cavern Volume was Reduced 25%• Air Treatment Increased 25%Air Treatment Increased 25%• Process Water Decreased by 54%Process Water Decreased by 54%• Electrical Decreased 25%Electrical Decreased 25%• Piped Utilities Increased by 370% for Sprinklers in TunnelPiped Utilities Increased by 370% for Sprinklers in Tunnel

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• (2) Distributed RF System (Tunnel view)(2) Distributed RF System (Tunnel view)

Area of Refuge

Nov. 17, 2008 ILC08 Global Design Effort 27

CLIC 4.5m tunnel : Transversal Ventilation

Main actions/conclusions from Daresbury

• 2d drawings to be updated and reviewed internally before release (FNAL)

• Updated machine 3d models by Daresbury for positron source area (including BDS etc) awaited to allow sizing of the tunnel/alcoves

• Drawings will be different for each region…….•  • Transport passage on one side of the machine ok

• DR relatively well understood remains on north side. Cavern sizes adjusted.•  • RTML : one of the beam dumps can be deleted (On next 2d layout the beam dumps should be labelled ‘main dump, 17KW dump etc to avoid confusion.)•  • BDS : position and size of beam dumps unclear : 3d model by Norbert required....•   • Main beam dumps need to be moved to other side of linac : may to put service tunnel at a higher level than beam tunnel due to muon beam radiation•  • 2nd tunnel for safety : Atsushi : Two possibilities:• 1. Fire shelters or compartments• 2. In Japan second tunnel option should not be excluded due to increase in safety requirements• this will be presented at Albuquerque?• do we need cryo vent pipe under pressure ?•  • Muon walls questions, getting equipment either side ?•  • Machine lines from main linac to DR transfer line is an issue•   • beam dumps cross transport lines, extra shafts ?•   • diameter of main linac 4.5 or 5.2m cost very similar = see cost curve from FNAL….•  • services required for ML klystron electronics, instrumentation, shielding etc. needs better definition to update cross section•  • heat loads mostly understood by CFS…Emil….(DRFS full power/ low power confirmed by KEK 9 Sept)•  • For Albuquerque :•  • 2d's updated• Norbert to do 3ds for machine• 3d civil updated

• Nick Walker asked for cost estimate for this new layout with respect to RDR……….. 

Upcoming CLIC Meetings

• CLIC two-beam module review :– 15-16 September

Talks on CE, CV and transport

• CLIC Workshop :– 12-16 October

• ….