January 31, 20071

J.C. Sheppard, SLAC

Americas Region

ILC Reference Design Report Status

2nd ILC Positron Source Collaboration Meeting IHEP, Beijing, China

J. C. Sheppard

SLAC

January 31, 2007

January 31, 20072

J.C. Sheppard, SLAC

Americas Region

October 2006: Submitted Cost Reduction Schemes for discussionSingle Positron Production Target½ Correctors and BPMs in Transport LinesReduced Underground Facilities(19km5 km Transport Line for Central Injector)Comparison of Undulator Source cost to Conventional Source [reject conventional source]Keep Alive Source Deletion

November, 2006 Valencia Meeting to discuss layout:Accepted Cost Reduction schemesRejected Conventional SourceRetain Keep Alive SourceAdd DR Injection Line Spin Rotators for 30% initial polarization

December, 2006 ILC GDE Cost Review Meeting, mainly Technical Systems reports with Global Systems Leaders observing

RDR Status

ILC GDE Activities Since RAL Meeting

January 31, 20073

J.C. Sheppard, SLAC

Americas Region

January 2007: Review cost and inventoryWrote RDR (mainly Vinod Bharadwaj for e+ with everyone’s participation)Machine Advisory Committee (MAC) review in Daresbury, JM Paterson presented e-,e+ designs

February 2007: Beijing ILC GDE Meeting to release RDR, description and cost

RDR Status

ILC GDE Activities Since RAL Meeting

January 31, 20074

J.C. Sheppard, SLAC

Americas Region

Draft RDR for Beijing

After much discussion, the board and the editors have agreed that it will not be possible to produce a satisfactory complete and finished draft by Beijing, given the amount of general editing that we feel still remains to be done. We therefore propose to produce an incomplete reduced scope document as follows:

1. We have concentrated the editing efforts over the last week on a core sub-set ofthe RDR (see below for details).

2. The current version of this core document has been frozen as of 6PM PST, 30thJanuary, and has been formally handed to the Executive Committee (EC) forreview; no further content edits to these draft sections will occur, notwithstandingcomments from the EC.

RDR Status

ILC RDR Status as of January 31, 2007

January 31, 20075

J.C. Sheppard, SLAC

Americas Region

Draft RDR for Beijing

3. At the end of the Beijing meeting, and after review and sign-off by the EC, a PDF version of the core draft will be made available for download to the public.

4. A final draft – including all sections, edited, reviewed and signed-off by the EC –will be made available by no later than April 1st, 2007.

5. The final document will be published in summer, 2007, after external review.

RDR Status

ILC RDR Status as of January 31, 2007

January 31, 20076

J.C. Sheppard, SLAC

Americas Region

Draft RDR for Beijing

As of 6PM CST 30th January, the core document is composed of the following sections:

I. RDR IntroductionII. Accelerator DesignII-1 ILC OverviewII-2 Electron SourceII-3 Positron SourceII-4 Damping RingsII-5 RTMLII-6 Main LinacsII-7 BDS

RDR Status

ILC RDR Status as of January 31, 2007

January 31, 20077

J.C. Sheppard, SLAC

Americas Region

Draft RDR for Beijing

As of 6PM CST 30th January, the core document is composed of the following sections:

III. Technical and Global SystemsIII-1 MagnetsIII-2 VacuumIII-3 ModulatorIII-4 KlystronIII-5 Power DistributionIII-6 CavitiesIII-7 CryomodulesIII-8 CryogenicsIV. CFSV. Sample SitesVI. Cost and Schedule

RDR Status

ILC RDR Status as of January 31, 2007

January 31, 20078

J.C. Sheppard, SLAC

Americas Region

Draft RDR for Beijing

The remaining sections:

II-8 Beam DynamicsII-9 Operations and AvailabilityIII-9 LLRFIII-10 InstrumentationIII-11 Dumps and CollimatorsIII-12 Controls and Timing Systems

will continue to be worked on by the editors and authors on a best-effort basis for the Beijing release. The last chapter on the EDR will be started after Beijing.

RDR Status

ILC RDR Status as of January 31, 2007

January 31, 20079

J.C. Sheppard, SLAC

Americas Region

Draft RDR for Beijing

Please also note that the RDR MB and the editors are aware of several technicalinconsistencies between the BCD and the current RDR, many of which will requireformal Change Control Requests and subsequent review by the CCB. A catalogue of these modifications is being made. Should you identify technical details that fall into this category, please send them to Nobu Toge (toge@lcdev.kek.jp). Plans for bringing the RDR and BCD inline with each other will be discussed at the Beijing meeting.

RDR Status

ILC RDR Status as of January 31, 2007

January 31, 200710

J.C. Sheppard, SLAC

Americas Region

Draft RDR for BeijingReferences and supporting documentationThe RDR is intended to be a ‘light’ readable document, which describes the machine design in enough detail to support feasibility and the cost estimate. It does not completely reflect the amount of detailed technical work that exists. It is important that this detailed technical work be documented to support the RDR content (references), and before moving on to the EDR phase. We would like to ask all the groups to produce detailed ILC Reports on their respective systems where appropriate. Several of the RDR chapters and sections have been shortened by the editors to maintain a consistent look-and-feel and level of detail to the document as a whole. It is important that the omitted information be captured in standalone ILC Reports, which can then be referenced by the RDR itself. In order to include the references in the RDR, you can request a report number from Max (maxine@fnal.gov); Max will maintain a list of titles, authors and report numbers.

The ILC Reports themselves should be completed before April 1st.

RDR Status

ILC RDR Status as of January 31, 2007

January 31, 200711

J.C. Sheppard, SLAC

Americas Region

Positron System Site Layout Discussions: 2007

Undulator Scheme

January 31, 200712

J.C. Sheppard, SLAC

Americas Region

Positron System Site Layout : 2007

Undulator Scheme

January 31, 200713

J.C. Sheppard, SLAC

Americas Region

Layout of ILC Positron Source: January 2007

Photon production at 150 GeV electron energyK=0.92, =1.15 cm, 147 m long helical undulator, UK designOne e+ production station (no backup-- fast target exchange) + KASPulsed OMD (shielded target)Reduced number of BPM electronics and correctors in transport linesKeep alive auxiliary source, 10% intensity(500 MeV, 2.05x1010 e-/bunch, 2625(?) bunches/pulse,5 pulses/s into ~4 r.l. W-Re spinning target, collection system same as for main positron production, 400 MeV e+ preBoost, inject into e+ 5 GeV Booster)

Undulator Scheme

January 31, 200714

J.C. Sheppard, SLAC

Americas Region

Positron System Remote Handling Concept: SLAC,LLNL, CCRLC (Daresbury and Rutherford)

Undulator Scheme

Target Assembly In Place

Target Assembly Lifting Out

1.25 m

January 31, 200715

J.C. Sheppard, SLAC

Americas Region

Positron System Remote Handling Concept: SLAC,LLNL, CCRLC (Daresbury and Rutherford)

Undulator Scheme

January 31, 200716

J.C. Sheppard, SLAC

Americas Region

Positron System Spinning Disk Exp & Simulations: ANL, LLNL, SLAC

Undulator Scheme

Cu Disk

NdFeB Magnet

Strain Gauges

January 31, 200717

J.C. Sheppard, SLAC

Americas Region

Positron System Spinning Disk Simulations, ANL (Antipov, Gai, Liu)

Undulator Scheme

January 31, 200718

J.C. Sheppard, SLAC

Americas Region

Positron System Spinning Disk Simulations, ANL (Antipov, Gai, Liu)

Undulator Scheme

Copper Disk: SLAC, LLNL exp

January 31, 200719

J.C. Sheppard, SLAC

Americas Region

February-April 2007: Complete RDR and supporting documentation Update BCD to reflect current design

February-June 2007: Develop Engineering Design Report Work PlanA Coordinated Global EffortNeeds Definition of DeliverablesMust include:

R&D goalsSystem EngineeringPhysical LayoutsCost /Schedule for Construction

June 2007: Hamburg GDE/LCWS Meeting to finalize global EDR plans

Lot’s of Work, Lots of Fun!

RDR Status

ILC Positron Effort beyond Beijing Meeting