RDR ParametersCentre of undulator to target: 500mActive (K=0.92, period=1.21mm) undulator: 147mPhoton beam power: 131kWBeam spot: >1.7 mm rms

Global Design Effort

Baseline Target Design Wheel rim speed (100m/s) fixed by thermal load (~8% of photon beam power)Rotation reduces pulse energy density from ~900J/g to ~24J/gCooled by internal water-cooling channelWheel diameter (~1m) fixed by radiation damage and capture opticsMaterials fixed by thermal and mechanical properties and pair-production cross-section (Ti6%Al4%V)Wheel geometry (~30mm radial width) constrained by eddy currents.20cm between target and rf cavity.T. Piggott, LLNLDrive motor and water union are mounted on opposite ends of through-shaft.

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Target Progress

Baseline target/capture

RAL, ANL and Cornell have done Eddy current simulation which produce consistent results with multiple codes. Estimates for power dissipation in the target are >100kW for a constant field and are considered excessive.Evaluation of ceramic target material is on-going. No conclusions.Radiation damage of the superconducting coil is still TBD but may not be worthwhile unless a solution can be found for the eddy currents.ANL simulation of beam heating in windows shows that an upstream window is feasible but a downstream window is not.

Alternative target/capture

Capture efficiency for the lithium lens focusing and wave solenoid is still TBDThermal heating and stress for the lithium lens is still on-going.Thermal stress calculation for the liquid metal target is still on-going

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Capture versus Optical Matching Device TypeFrom F. Zhou, W. LiuPositron Capture (arb. units)No OMD l xfrmPulsed FCImmersed00.10.20.30.4

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Optical Matching Device (OMD)Optical Matching Device factor of 2 in positron yield (3 if immersed target)DC solenoid before target or pulsed flux concentrator after targetPulsed device is the baseline design Target spins in the magnetic field of the OMDEddy currents in the target need to calculate powerMagnetic field is modified by the eddy currents effect on yield??Eddy current mitigationReduce amount of spinning metalDo experiment to validate eddy current calculationsLook for low electrical / high thermal conductivity Ti-alloysOther materials such as ceramicsNo OMDUse focusing solenoidal lens (1/4 wave) lower fieldsOMD is upgrade to polarization(??)

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Eddy Current ExperimentEddy current calculation mesh -S. Antipov, W. Liu, W. Gai - ANLProposed experimentLayout at CockcroftInstitute/Daresbury(this summer)

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Calculated Eddy Current PowerNominal RPMssTiAlV = 6e5

Global Design Effort

force_graph (2)

347.9307261.02652174.05399434.74487073.8125

605.8727454.82785303.417451092.08098514.09

862.4121648.03296432.6061733.26448827.572

1116.9512840.3953561.54152350.09848734.212

1369.00341031.6617690.15242936.1568499.797

1618.00051221.6008818.36413486.91168241.258

1863.48941410.0441946.10393999.72127989.7153

2105.00981596.69861073.29054474.1117768.9355

2342.24121781.39661199.86834910.2817581.9375

2574.79741963.94821325.80045310.1067430.3154

2802.29762144.20751451.00055675.25447308.007

3024.60522321.99851575.37236008.27737212.1035

3241.4062497.1751698.87396311.01567137.478

3452.61992669.60911821.48996586.39847082.016

3658.07672839.10331943.11336835.63537044.743

3857.61433005.67872063.7167061.1177021.8896

4051.313169.16462183.28697265.0087009.26

4239.3293329.54442301.72277449.5967003.814

4421.26953486.68292419.017616.027003.3496

4597.4343640.61722535.10137766.63047006.4136

4767.8653791.23342649.96567012.0786

4932.64063938.46262763.5027018.9062

5091.99464082.52222875.76597026.025

5245.90674223.3832986.71077033.571

5394.4024360.7883096.29377041.007

5537.6574494.8793204.47857048.264

5676.0794625.7833311.29447055.4175

5809.72364753.43163416.68077061.9795

5938.3834877.8483520.59997068.2617

6062.2944999.24763623.11557074.2466

6181.7545117.6053724.15777080.2646

6296.88135232.8793823.69687086.206

6407.685345.06933921.7317091.8457

6514.7215454.32474018.37137097.999

6617.795560.67774113.59037104.232

6716.73635664.35064207.3897110.5454

6811.8025765.384299.64847116.8413

6903.2975863.58354390.3747123.251

6991.33645959.00834479.6547129.274

7075.86436051.814567.51467134.997

Force, Newtons

RPMs

=2.5e6

=2.0e6

=1.5e6

=1.0e6

copper, sigma=60e6

power_graph

3.64351842.73346111.82268764.552633374.07673

11.0625168.3046175.54004328.89154155.45718

22.46209316.87844711.26750973.55805229.91997

37.78925728.43268218.998356137.29874295.5003

56.9770442.93709628.723698218.46786353.75607

79.9392660.35465640.43226315.18057407.16925

106.57863680.6447254.110565425.4629456.95618

136.78331103.753369.74231547.43726504.82462

170.43726129.6264387.31051679.2892551.7129

207.40916158.20308106.79798819.4753598.5386

247.5562189.42021128.182966.5369645.5925

290.7471223.20741151.436261119.2866693.2799

336.82788259.4918176.5371276.5563741.6848

385.661298.19797203.46221437.533791.0681

437.09564339.23828232.178381601.1885841.76105

490.97656382.54675262.658781766.8673893.7087

547.1761428.03217294.878051934.0062946.6813

605.58124475.62328.797332102.2161000.4834

665.99884525.2172364.38812270.91041054.951

728.335576.7541401.6162439.95681109.9705

792.4617630.1368440.44791165.47

858.25854685.27576480.83761221.2599

925.63605742.1315522.764161277.2091

994.4636800.6243566.18911333.3501

1064.6191860.62897611.073061389.587

1136.0125922.09357657.376831445.9031

1208.6075984.9679705.07391502.3099

1282.30381049.1625754.118961558.6978

1356.94231114.6063804.470031615.1239

1432.46261181.2749856.10791671.5775

1508.82621249.0916908.982671728.1324

1585.95921317.975963.052371784.7618

1663.7611387.8531018.28171841.4053

1742.28361458.69321074.66491898.274

1821.37961530.43621132.1621955.2606

1900.91431603.07691190.742012.367

1980.86151676.56351250.3312069.5664

2061.2231750.77981310.90112126.8982

2141.95071825.67421372.44122184.211

2222.94651901.23061434.92582241.5237

RPMs

Power, kWatts

=2.5e6

=2.0e6

=1.5e6

=1.0e6

coppersigma=60e6

Chart2

17.91844234.16533758.77814574.07673

52.70969493.25342137.92554155.45718

102.393875167.16621219.5084229.91997

163.43126247.57973296.44662295.5003

232.66753329.8297367.39557353.75607

307.58377411.33136432.54587407.16925

386.21976490.776492.7137456.95618

467.00104567.24817548.663504.82462

548.93634640.77057601.9193551.7129

631.2936711.2819652.375598.5386

713.49634778.5715701.2782645.5925

794.8631843.3275749.0801693.2799

875.3363905.5721796.08844741.6848

954.57465965.42706842.84045791.0681

1032.27551022.75964889.67487841.76105

1108.61491078.405936.7054893.7087

1183.2791132.88983.8209946.6813

1256.61791185.95321031.57641000.4834

1328.54581237.28161079.76651054.951

1398.78321287.59251128.50711109.9705

1467.27721337.06181177.91371165.47

1534.33971385.88351228.18441221.2599

1600.04941434.03061279.381277.2091

1664.62761481.76271331.38541333.3501

1728.0331529.00941384.1211389.587

1789.98771575.97841437.38771445.9031

1850.92221622.78471491.24371502.3099

1910.59521669.52971545.53021558.6978

1968.86881716.21421600.20041615.1239

2026.05441763.08561655.24931671.5775

2082.25541810.06321710.64921728.1324

2137.78121857.1211766.25221784.7618

2192.74561904.12661822.06271841.4053

2247.11041951.25021877.94171898.274

2300.8941998.6651934.00421955.2606

2353.85182046.49881990.13232012.367

2405.86962094.5162046.32032069.5664

2457.01782142.73972102.61132126.8982

2507.72142191.16462158.91432184.211

2557.9552239.95532215.29762241.5237

power

sigma=2.5e6sigma=2e6sigma=1.5e6sigma=1e6sigma=10sigma=20sigma=40e6sigma=60e6

1004.55263331003.64351841002.73346111001.822687610017.918442010034.165337010058.778145010074.07673

252.6315828.89154174.3589811.062516174.358988.304617174.358985.540043174.3589852.7096940174.3589893.253420174.35898137.925540174.35898155.45718

405.2631573.55805248.7179422.462093248.7179416.878447248.7179411.267509248.71794102.3938750248.71794167.166210248.71794219.50840248.71794229.91997

557.8947137.29874323.0769337.789257323.0769328.432682323.0769318.998356323.07693163.431260323.07693247.579730323.07693296.446620323.07693295.5003

710.5263218.46786397.4358856.97704397.4358842.937096397.4358828.723698397.43588232.667530397.43588329.82970397.43588367.395570397.43588353.75607

863.1579315.18057471.7948679.93926471.7948660.354656471.7948640.43226471.79486307.583770471.79486411.331360471.79486432.545870471.79486407.16925

1015.7895425.4629546.1539106.578636546.153980.64472546.153954.110565546.1539386.219760546.1539490.7760546.1539492.71370546.1539456.95618

1168.421547.43726620.5128136.78331620.5128103.7533620.512869.74231620.5128467.001040620.5128567.248170620.5128548.6630620.5128504.824621

1321.0526679.2892694.87177170.43726694.87177129.62643694.8717787.31051694.87177548.936340694.87177640.770570694.87177601.91930694.87177551.7129

1473.6842819.4753769.2308207.40916769.2308158.20308769.2308106.79798769.2308631.29360769.2308711.28190769.2308652.3750769.2308598.5386

1626.3158966.5369843.5897247.5562843.5897189.42021843.5897128.182843.5897713.496340843.5897778.57150843.5897701.27820843.5897645.5925

1778.94741119.2866917.9487290.7471917.9487223.20741917.9487151.43626917.9487794.86310917.9487843.32750917.9487749.08010917.9487693.2799

1931.5791276.5563992.3077336.82788992.3077259.4918992.3077176.537992.3077875.33630992.3077905.57210992.3077796.088440992.3077741.6848

2084.21041437.5331066.6666385.6611066.6666298.197971066.6666203.46221066.6666954.5746501066.6666965.4270601066.6666842.8404501066.6666791.0681

2236.8421601.18851141.0256437.095641141.0256339.238281141.0256232.178381141.02561032.275501141.02561022.7596401141.0256889.6748701141.0256841.76105

2389.47361766.86731215.3846490.976561215.3846382.546751215.3846262.658781215.38461108.614901215.38461078.40501215.3846936.705401215.3846893.7087

2542.10521934.00621289.7435547.17611289.7435428.032171289.7435294.878051289.74351183.27901289.74351132.8801289.7435983.820901289.7435946.6813

2694.73682102.2161364.1025605.581241364.1025475.621364.1025328.797331364.10251256.617901364.10251185.953201364.10251031.576401364.10251000.4834

2847.36842270.91041438.4615665.998841438.4615525.21721438.4615364.38811438.46151328.545801438.46151237.281601438.46151079.766501438.46151054.951

30002439.95681512.8206728.3351512.8206576.75411512.8206401.6161512.82061398.783201512.82061287.592501512.82061128.507101512.82061109.9705

1587.1794792.46171587.1794630.13681587.1794440.44791587.17941467.277201587.17941337.061801587.17941177.913701587.17941165.47

1661.5385858.258541661.5385685.275761661.5385480.83761661.53851534.339701661.53851385.883501661.53851228.184401661.53851221.2599

1735.8975925.636051735.8975742.13151735.8975522.764161735.89751600.049401735.89751434.030601735.89751279.3801735.89751277.2091

1810.2565994.46361810.2565800.62431810.2565566.18911810.25651664.627601810.25651481.762701810.25651331.385401810.25651333.3501

1884.61541064.61911884.6154860.628971884.6154611.073061884.61541728.03301884.61541529.009401884.61541384.12101884.61541389.587

1958.97441136.01251958.9744922.093571958.9744657.376831958.97441789.987701958.97441575.978401958.97441437.387701958.97441445.9031

2033.33341208.60752033.3334984.96792033.3334705.07392033.33341850.922202033.33341622.784702033.33341491.243702033.33341502.3099

2107.69241282.30382107.69241049.16252107.6924754.118962107.69241910.595202107.69241669.529702107.69241545.530202107.69241558.6978

2182.05131356.94232182.05131114.60632182.0513804.470032182.05131968.868802182.05131716.214202182.05131600.200402182.05131615.1239

2256.41021432.46262256.41021181.27492256.4102856.10792256.41022026.054402256.41021763.085602256.41021655.249302256.41021671.5775

2330.76931508.82622330.76931249.09162330.7693908.982672330.76932082.255402330.76931810.063202330.76931710.649202330.76931728.1324

2405.12821585.95922405.12821317.9752405.1282963.052372405.12822137.781202405.12821857.12102405.12821766.252202405.12821784.7618

2479.4871663.7612479.4871387.8532479.4871018.28172479.4872192.745602479.4871904.126602479.4871822.062702479.4871841.4053

2553.84621742.28362553.84621458.69322553.84621074.66492553.84622247.110402553.84621951.250202553.84621877.941702553.84621898.274

2628.2051821.37962628.2051530.43622628.2051132.1622628.2052300.89402628.2051998.66502628.2051934.004202628.2051955.2606

2702.56421900.91432702.56421603.07692702.56421190.742702.56422353.851802702.56422046.498802702.56421990.132302702.56422012.367

2776.9231980.86152776.9231676.56352776.9231250.3312776.9232405.869602776.9232094.51602776.9232046.320302776.9232069.5664

2851.2822061.2232851.2821750.77982851.2821310.90112851.2822457.017802851.2822142.739702851.2822102.611302851.2822126.8982

2925.6412141.95072925.6411825.67422925.6411372.44122925.6412507.721402925.6412191.164602925.6412158.914302925.6412184.211

30002222.946530001901.230630001434.925830002557.955030002239.9553030002215.2976030002241.5237

force_graph

347.9307261.02652174.05399434.7448

605.8727454.82785303.417451092.0809

862.4121648.03296432.6061733.2644

1116.9512840.3953561.54152350.0984

1369.00341031.6617690.15242936.156

1618.00051221.6008818.36413486.9116

1863.48941410.0441946.10393999.7212

2105.00981596.69861073.29054474.111

2342.24121781.39661199.86834910.281

2574.79741963.94821325.80045310.106

2802.29762144.20751451.00055675.2544

3024.60522321.99851575.37236008.2773

3241.4062497.1751698.87396311.0156

3452.61992669.60911821.48996586.3984

3658.07672839.10331943.11336835.6353

3857.61433005.67872063.7167061.117

4051.313169.16462183.28697265.008

4239.3293329.54442301.72277449.596

4421.26953486.68292419.017616.02

4597.4343640.61722535.10137766.6304

4767.8653791.23342649.9656

4932.64063938.46262763.502

5091.99464082.52222875.7659

5245.90674223.3832986.7107

5394.4024360.7883096.2937

5537.6574494.8793204.4785

5676.0794625.7833311.2944

5809.72364753.43163416.6807

5938.3834877.8483520.5999

6062.2944999.24763623.1155

6181.7545117.6053724.1577

6296.88135232.8793823.6968

6407.685345.06933921.731

6514.7215454.32474018.3713

6617.795560.67774113.5903

6716.73635664.35064207.389

6811.8025765.384299.6484

6903.2975863.58354390.374

6991.33645959.00834479.654

7075.86436051.814567.5146

Force, Newtons

RPMs

=2.5e6

=2.0e6

=1.5e6

=1.0e6

Chart3

1711.08673262.55225612.9047073.8125

2886.8085107.317553.91558514.09

3931.32186418.1988427.838827.572

4830.59867317.8068762.1838734.212

5590.36877924.9128827.5188499.797

6225.61048325.58754.8918241.258

6752.9148581.0438614.9237989.7153

7186.8548729.5958443.5817768.9355

7543.7818805.8168271.9017581.9375

7836.93958829.9228098.64557430.3154

8076.66758813.3087938.367308.007

8268.868773.0297792.58547212.1035

8423.658714.6197661.0227137.478

8545.8048642.967545.50637082.016

8639.178559.537445.73637044.743

8710.4128473.0537359.71537021.8896

8761.0378387.8827284.2437009.26

8796.8668302.1837221.47857003.814

8819.6238213.7617168.08847003.3496

8829.4728127.60847123.4217006.4136

8827.918044.46537086.9477012.0786

8818.267965.04257058.70367018.9062

8801.9957888.71247037.9687026.025

8781.0977816.4647023.2067033.571

8755.9047747.4577013.31057041.007

8725.5557682.33547006.7557048.264

8692.6337621.21247003.44637055.4175

8656.3187564.12457002.3217061.9795

8616.35457510.66367002.9527068.2617

8574.4217461.5167005.1447074.2466

8531.1287415.94047008.6357080.2646

8487.8327373.50057012.7167086.206

8444.977333.4067017.3517091.8457

8402.3627296.08647021.9727097.999

8360.0557261.93757026.9997104.232

8317.1567231.14757031.9817110.5454

8273.3237202.6387036.90237116.8413

8228.8647176.3077041.91167123.251

8185.21347151.977046.70567129.274

8142.2317130.00547051.5177134.997

Chart4

7073.8125

8514.09

8827.572

8734.212

8499.797

8241.258

7989.7153

7768.9355

7581.9375

7430.3154

7308.007

7212.1035

7137.478

7082.016

7044.743

7021.8896

7009.26

7003.814

7003.3496

7006.4136

7012.0786

7018.9062

7026.025

7033.571

7041.007

7048.264

7055.4175

7061.9795

7068.2617

7074.2466

7080.2646

7086.206

7091.8457

7097.999

7104.232

7110.5454

7116.8413

7123.251

7129.274

7134.997

force

sigma=2.5e6sigma=2e6sigma=1.5e6sigma=1e6sigma=10e6sigma=20e6sigma=40e6sigma=60e6

100434.7448100347.9307100261.02652100174.053991001711.086701003262.552201005612.90401007073.8125

252.631581092.0809174.35898605.8727174.35898454.82785174.35898303.41745174.358982886.8080174.358985107.310174.358987553.91550174.358988514.09

405.263151733.2644248.71794862.4121248.71794648.03296248.71794432.606248.717943931.32180248.717946418.1980248.717948427.830248.717948827.572

557.89472350.0984323.076931116.9512323.07693840.3953323.07693561.5415323.076934830.59860323.076937317.8060323.076938762.1830323.076938734.212

710.52632936.156397.435881369.0034397.435881031.6617397.43588690.1524397.435885590.36870397.435887924.9120397.435888827.5180397.435888499.797

863.15793486.9116471.794861618.0005471.794861221.6008471.79486818.3641471.794866225.61040471.794868325.50471.794868754.8910471.794868241.258

1015.78953999.7212546.15391863.4894546.15391410.0441546.1539946.1039546.15396752.9140546.15398581.0430546.15398614.9230546.15397989.71531

1168.4214474.111620.51282105.0098620.51281596.6986620.51281073.2905620.51287186.8540620.51288729.5950620.51288443.5810620.51287768.9355

1321.05264910.281694.871772342.2412694.871771781.3966694.871771199.8683694.871777543.7810694.871778805.8160694.871778271.9010694.871777581.9375

1473.68425310.106769.23082574.7974769.23081963.9482769.23081325.8004769.23087836.93950769.23088829.9220769.23088098.64550769.23087430.3154

1626.31585675.2544843.58972802.2976843.58972144.2075843.58971451.0005843.58978076.66750843.58978813.3080843.58977938.360843.58977308.007

1778.94746008.2773917.94873024.6052917.94872321.9985917.94871575.3723917.94878268.860917.94878773.0290917.94877792.58540917.94877212.1035

1931.5796311.0156992.30773241.406992.30772497.175992.30771698.8739992.30778423.650992.30778714.6190992.30777661.0220992.30777137.478

2084.21046586.39841066.66663452.61991066.66662669.60911066.66661821.48991066.66668545.80401066.66668642.9601066.66667545.506301066.66667082.016

2236.8426835.63531141.02563658.07671141.02562839.10331141.02561943.11331141.02568639.1701141.02568559.5301141.02567445.736301141.02567044.743

2389.47367061.1171215.38463857.61431215.38463005.67871215.38462063.7161215.38468710.41201215.38468473.05301215.38467359.715301215.38467021.8896

2542.10527265.0081289.74354051.311289.74353169.16461289.74352183.28691289.74358761.03701289.74358387.88201289.74357284.24301289.74357009.26

2694.73687449.5961364.10254239.3291364.10253329.54441364.10252301.72271364.10258796.86601364.10258302.18301364.10257221.478501364.10257003.814

2847.36847616.021438.46154421.26951438.46153486.68291438.46152419.011438.46158819.62301438.46158213.76101438.46157168.088401438.46157003.3496

30007766.63041512.82064597.4341512.82063640.61721512.82062535.10131512.82068829.47201512.82068127.608401512.82067123.42101512.82067006.4136

1587.17944767.8651587.17943791.23341587.17942649.96561587.17948827.9101587.17948044.465301587.17947086.94701587.17947012.0786

1661.53854932.64061661.53853938.46261661.53852763.5021661.53858818.2601661.53857965.042501661.53857058.703601661.53857018.9062

1735.89755091.99461735.89754082.52221735.89752875.76591735.89758801.99501735.89757888.712401735.89757037.96801735.89757026.025

1810.25655245.90671810.25654223.3831810.25652986.71071810.25658781.09701810.25657816.46401810.25657023.20601810.25657033.571

1884.61545394.4021884.61544360.7881884.61543096.29371884.61548755.90401884.61547747.45701884.61547013.310501884.61547041.007

1958.97445537.6571958.97444494.8791958.97443204.47851958.97448725.55501958.97447682.335401958.97447006.75501958.97447048.264

2033.33345676.0792033.33344625.7832033.33343311.29442033.33348692.63302033.33347621.212402033.33347003.446302033.33347055.4175

2107.69245809.72362107.69244753.43162107.69243416.68072107.69248656.31802107.69247564.124502107.69247002.32102107.69247061.9795

2182.05135938.3832182.05134877.8482182.05133520.59992182.05138616.354502182.05137510.663602182.05137002.95202182.05137068.2617

2256.41026062.2942256.41024999.24762256.41023623.11552256.41028574.42102256.41027461.51602256.41027005.14402256.41027074.2466

2330.76936181.7542330.76935117.6052330.76933724.15772330.76938531.12802330.76937415.940402330.76937008.63502330.76937080.2646

2405.12826296.88132405.12825232.8792405.12823823.69682405.12828487.83202405.12827373.500502405.12827012.71602405.12827086.206

2479.4876407.682479.4875345.06932479.4873921.7312479.4878444.9702479.4877333.40602479.4877017.35102479.4877091.8457

2553.84626514.7212553.84625454.32472553.84624018.37132553.84628402.36202553.84627296.086402553.84627021.97202553.84627097.999

2628.2056617.792628.2055560.67772628.2054113.59032628.2058360.05502628.2057261.937502628.2057026.99902628.2057104.232

2702.56426716.73632702.56425664.35062702.56424207.3892702.56428317.15602702.56427231.147502702.56427031.98102702.56427110.5454

2776.9236811.8022776.9235765.382776.9234299.64842776.9238273.32302776.9237202.63802776.9237036.902302776.9237116.8413

2851.2826903.2972851.2825863.58352851.2824390.3742851.2828228.86402851.2827176.30702851.2827041.911602851.2827123.251

2925.6416991.33642925.6415959.00832925.6414479.6542925.6418185.213402925.6417151.9702925.6417046.705602925.6417129.274

30007075.864330006051.8130004567.514630008142.231030007130.0054030007051.517030007134.997

Sheet3

July 26, 2007

Toward the ILCAmericas

Pulsed Flux Concentrator: 7T, 1 ms, 5 HzPulsed Flux Concentrator, circa 1965: Brechna et al.

Global Design Effort

July 26, 2007

Toward the ILCAmericas

OMD ProgressPlans and Actions (baseline target/capture):ANL will simulate eddy currents in the pulsed magnet configuration.UK will evaluate suitability of non-conducting materials for the targetDaresbury/Cockroft/RAL will spin a one meter target wheel in a constant magnetic field and will measure the forces.Eddy simulations will be calculated and benchmarked against this configurationPlans and Actions (alternative targets/capture):ANL will determine the capture efficiency for wave focusing optics and lithium lens.LLNL will evaluate the survivability of lithium lens to beam stressCornell will specify an initial design of a liquid metal target. LLNL will calculate the Stress-strain behavior of the outgoing beam window.

Global Design Effort

July 26, 2007*Toward the ILC CCLRC

Undulator ChallengesHigh fieldsPushing the limits of technologyShort PeriodsShorter periods imply higher fieldsNarrow aperturesVery tight tolerances - Alignment criticalCold bore (4K surface)Cannot tolerate more than few W of heating per moduleMinimising impact on electron beamMust not degrade electron beam properties but have to remove energy from electronsCreating a vacuumImpossible to use conventional pumps, need other solutionMinimising costMinimise total length, value engineering

Global Design Effort

July 26, 2007*Toward the ILC CCLRC

UK Undulator Recent HighlightsTwo 12mm period SC undulator prototypes built and testedPeriod reduced to 12mm from 14mmBetter, more reproducible, fabrication techniqueFull inclusion of iron for the first timeOne 11.5mm period SC undulator built and testedPeriod further reduced to RDR value of 11.5mmNew SC wire used (more SC and less Cu)Field strength measured greater than expected, possibly due to increase in SC content of wireBest ever field quality results (well within spec)Full length prototype will use these parametersFull length prototype construction started4m prototype design completeFabrication has commencedUndulator impact studies ongoingEmittance growth due to misalignments & wakefields shown to be

Remote-Handling Module and PlugM. Woodward, RALCryocooler (if required) + vacuum pump + water pump Details of vertical drive for target wheel not yet considered.Module contains target, capture optics and first accelerating cavity.

Global Design Effort

July 26, 2007

Toward the ILCAmericas

TRIUMF ISAC FACILITY

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Visit to ORNL

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Visit to ORNL

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Visit to ORNL

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Visit to ORNLThe remote handling systems for the SNS target is estimated to have cost about $100M

Off the cuff estimate to work up ILC e+ Remote Handling Systems for the EDR would be about 4-5 FTE spread out over 3 years

Global Design Effort

AmericasJuly 26, 2007*Toward the ILC

ILC StatusReference Design Report (RDR) completedDesign feasibility Alternative technologies (cost saving, risk reduction ..)R&D priorities4-volume report, Executive Summary, Physics Case, Accelerator, Detectors ~ 700 pages producedPrinted version in AugustNow setting up Engineering Design Phase (EDR)Define EDR, (nn% design complete?)Choose final design technologiesSetup structure to get it done (regional balance to optimize use of resources)Three year timescale

Global Design Effort

July 26, 2007

Toward the ILCAmericas

What do we wantRDR to EDR phaseILC management is trying to match ILC tasks to world wide ILC resourcesILC positron source EDR leadership may well migrate to EuropeStrong US input is still needed to finish EDR Design of all aspects of the ILC e+ Sub-systems needs helpNeed people to consult with Need collaborators to help with designNeed collaborators to take the lead in the designNeed collaborators to do the design

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Polarized Electron Source

(A. Brachmann, SLAC)

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Select Positron References, 1ILC RDR Positron Chapter: http://media.linearcollider.org/report-apr03-part1.pdf sec. 2.3, pg. 45 ffILC Positron Source Collaboration Meetings1st meeting at RAL September, 2006: http://www.te.rl.ac.uk/ILC_Positron_Source_Meeting/ILCMeeting.html

2nd meeting at IHEP, Beijing January, 2007 : http://hirune.kek.jp/mk/ilc/positron/IHEP/ILC Notes1. ILC Target Prototype Simulation by Means of FEM Antipov, S; Liu, W; Gai, W [ILC-NOTE-2007-011] http://ilcdoc.linearcollider.org/record/6949

2. On the Effect of Eddy Current Induced Field , Liu, W ; Antipov, S; Gai, W [ILC-NOTE-2007-010] http://ilcdoc.linearcollider.org/record/6948

3. The Undulator Based ILC Positron Source: Production and Capturing Simulation Study Update, Liu, W ; Gai, W [ILC-NOTE-2007-009] http://ilcdoc.linearcollider.org/record/6947Other Notes1. F.Zhou,Y.Batygin,Y.Nosochkov,J.C.Sheppard,and M.D.Woodley,"Start-to-end beam optics development and multi-particle tracking for the ILC undulator-based positron source", slac-pub-12239, Jan 2007. http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-pub-12239.pdf

2. F.Zhou,Y.Batygin,A.Brachmann,J.Clendenin,R.H.Miller,J.C.Sheppard,and M.D.Woodley,"Start-to-end transport design and multi-particle tracking for the ILC electron source", slac-pub-12240, Jan 2007. http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-pub-12240.pdf

3. A.Mikhailichenko, " Liquid metal target for ILC*."*. Jun 2006. 3pp.Prepared for European Particle Accelerator Conference (EPAC 06), Edinburgh, Scotland, 26-30 Jun 2006.Published in *Edinburgh 2006, EPAC* 816-818

Global Design Effort

July 26, 2007

Toward the ILCAmericas

Select Positron References, 2Other Notes, contd4. A.A. Mikhailichenko , "Test of SC undulator for ILC.",Jun 2006. 3pp. Prepared for European Particle Accelerator Conference (EPAC 06), Edinburgh, Scotland, 26-30 Jun 2006.Published in *Edinburgh 2006, EPAC* 813-815.5. A.Mikhailichenko, "Issues for the rotating target", CBN-07-02, 2007, http://www.lns.cornell.edu/public/CBN/2007/CBN07-2/CBN07-2.pdf6. A.Mikhailichenko, "Positron Source for ILC:A perspective", CBN-06-06, 2006, http://www.lns.cornell.edu/public/CBN/2006/CBN06-1/CBN06-1.pdf7. Preliminary Investigations of Eddy Current Effects on a Spinning Disk, W.T. Piggott, S. Walston, and D. Mayhall. UCRL-TR-224467, Sep. 8, 20068. Positron Source Target Update, W.T. Piggott, UCRL-PRES-227298, Jan. 16, 2007.9. Computer Calculations of Eddy-Current Power Loss in Rotating Titanium Wheels and Rims in Localized Axial Magnetic Fields. D.J. Mayhall, W. Stein, and J. Gronberg, UCRL-TR-221440, May 17, 200610. A Preliminary Low-Frequency Electromagnetic Analysis of a Flux Concentrator, D.J. Mayhall, UCRL-TR-221994, June 13, 2006

Also see Posipol 2007 and Posipol 2006:

http://events.lal.in2p3.fr/conferences/Posipol07/

http://posipol2006.web.cern.ch/Posipol2006/

Global Design Effort