tcdim françois-xavier nuiry september 16 th 2015
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TCDIMFrançois-Xavier NuirySeptember 16th 2015
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Outlines
• TCDIM Existing design
• TCDIM locations
• TCDIM New simulations
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TCDIM Existing design
TCDIM MSI300+290+300mm long or 500mm longOD Ø100mmID Ø20mmInconel600
TCDIM MQI500mm longOD Ø150mmID losange304L
TCDIM MBIA500mm longOD Ø150mmID Ø46mm304L
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TCDIM LocationsTI2
CollimatorNew proposed location (ease integration) (m)
Mask Mask Design Location Distance collimator-Mask [m] Fluka simulation
TCDIM.20634 ? 416.56 ? TCDIV.29011 2953.25 TCDIH.29049 2972.25 TCDIM.29059 MQI (losange) 2975.733 3.483 availableTCDIH.29206 3016.5 TCDIV.29233 3028.17 TCDIM.29241 MQI (losange) 3032.171 4.001 availableTCDIH.29464 3099.17 TCDIM.29472 MQI (losange) 3101.81 2.64 availableTCDIV.29508 3108.25 TCDIM.29527 MSI 500mm long 3116.402 8.152
TI8
CollimatorLocation in Concept Design Report (m)
Mask Location Distance collimator-Mask [m]
TCDIM 81759 ? 668.97 ? TCDIH.87441 2387.665 TCDIM.87459 MQI (losange) 2396.08 Collimator and Mask to be removed during LS2
TCDIH.87606 2432.032 TCDIV.87644 2450.745 TCDIM.87658 MQI (losange) 2456.232 5.487 TCDIV.87804 2501.125 TCDIH.87822 2510.43 TCDIM.87831 MBIA 2512.73 2.3 availableTCDIH.87939 2566.345 TCDIM.87966 MQI (losange) 2576.219 9.874 TCDIV.88121 2620.897 TCDIM.88132 MSI 3*500mm 2625.125 4.228
Shall we keep masks associated to momentum collimators?
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TCDIM New simulations Beam Parameters:We only consider one bunch train 288 batchesPulse period between 2 trains 3.6s (only one impact considered)Bunch train time 7.2µs Beam Energy 450GeVParticles per train 288*2.32*1011=6.68*1013
Energy deposition layout Given by Fluka files
Considered MASKS:TCDIM.29472. Closest to collimator in TI2.
MQI Mask. Losange inner shape. 304L.TCDIM.87831. Closest to collimator in TI8.
MBIA Mask. Circular inner shape. 304L.TCDIM.29059 and 29241
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TCDIM New simulations with TA6V grade 5.
TA6V [Stress in Mpa]Linear elastic study
Titanium TA6V water quenched and tempered*, 1/s strain rate Annealed
Max Equivalent stress (VM) 400 Tensile yield strength @ 200C 860 724 @ 150C
Max Principal stress 21.5 Tensile strength @ 200C 960 845 @ 150C
Min Principal stress -468 Compressive yield strength @ 200C (static test) 539
Even if the stress level is not negligible, TA6V shall be a good candidate for this mask
TCDIM.29472 2.64m distance to the collimator 5 sigma impact on the collimator jawMax ΔT in the mask: 149ºC
Properties @ RTDensity ~ 4.42g/ccCTE ~ 8.78.10-6 /KE ~ 110.3 GPa
*trempe a l’eau puis revenu
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TCDIM New simulations with TA6V grade 5.
TA6V [Stress in Mpa]Linear elastic study
Titanium TA6V water quenched and tempered, 1/s strain rate Annealed
Max Equivalent stress (VM) 406 Tensile yield strength @ 200C 860 724 @ 150C
Max Principal stress 29.5 Tensile strength @ 200C 960 845 @ 150C
Min Principal stress -471 Compressive yield strength @ 200C (static test) 539
There are 46 degrees deference between 5 sigma and 20 sigma impact parameter
TCDIM.29472 2.64m distance to the collimator 20 sigma impact on the collimator jawMax ΔT in the mask: 195ºC
Properties @ RTDensity ~ 4.42g/ccCTE ~ 8.78.10-6 /KE ~ 110.3 GPa
Even if the stress level is not negligible, TA6V shall be a good candidate for this maskA study with the real mask geometry shall be done to check the geometry influence on the generated stress.
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TCDIM New simulations with TA6V grade 5.
TA6V [Stress in Mpa]Linear elastic study
Titanium TA6V water quenched and tempered, 1/s strain rate Annealed
Max Equivalent stress (VM) 341 Tensile yield strength @ 200C 860 724 @ 150C
Max Principal stress 19 Tensile strength @ 200C 960 845 @ 150C
Min Principal stress -396 Compressive yield strength @ 200C (static test) 539
TCDIM.29059 3.483m distance to the collimator 5 sigma impact on the collimator jawMax ΔT in the mask: 129ºC
Properties @ RTDensity ~ 4.42g/ccCTE ~ 8.78.10-6 /KE ~ 110.3 GPa
TA6V shall be a good candidate for this mask
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TCDIM Preliminary Conclusions (simplified model)Titanium TA6V is a good candidate for TCDIM 29472, TCDIM 29059.
MASK Material
TA6V 304L INVAR INCONEL Energy dep. in the downstream magnet coil
TCDIM.294725 σ impact parameter
OK Should be OK with the
EN1.3912 cold worked grade(old location)
High stress, need non linear
study(old location)
With TA6V mask: 35 J/cm3, ΔT~10.1CWith 304L mask: 33 J/cm3, ΔT~9.5C
With INVAR: 34 J/cm3, ΔT~10C (old location)With INCONEL: 34 J/cm3, ΔT~10C (old location)
TCDIM.2947220 σ impact parameter
OK x x With TA6V mask: 25.5J/cm3, ΔT~7.3 C
TCDIM.29059 OK x x With TA6V mask: 29 J/cm3, ΔT~8.3CWith 304L mask: 27 J/cm3, ΔT~7.7C
TCDIM.29241 Problem with Fluka
file/energy deposition?
x x With TA6V mask: 18 J/cm3, ΔT~5.2CWith 304L mask: 17 J/cm3, ΔT~4.7C
TCDIM.87831 OngoingProblem with
Energy deposition?
x x With TA6V mask: 10 J/cm3, ΔT~3CWith 304L mask: 9 J/cm3, ΔT~2.6C
Is the losange shape really needed for mask in front of MQI magnets?
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TCDIM New simulations with INCONEL
Inconel 718 wrought, solution treated and aged [stress in Mpa]Linear elastic study
Max Equivalent stress (VM) 1258 Yield strength @ 280C 1121
Max Principal stress 122 Tensile strength @ 280C 1376
Min Principal stress -1472 Compressive strength @ 900C -730
Stronger than Stainless Steel 304L.Non-linear study with bi-linear material property could give more precise results (as done for SS).Stress remains too high.Excluded candidate.
TCDIM.29472
Ni (~50%) Cr (~18%) Fe (balance)Properties @ RTDensity ~ 8.23g/ccCTE ~ 12.3.10-6 /KE ~ 198 GPa
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TCDIM New simulations with TITANIUM
Titanium Ti 13V 11Cr 3Al solution treated and aged bar [Stress in Mpa]Linear elastic study
Max Equivalent stress (VM) 333 Tensile yield strength at 200C 929
Max Principal stress 23 Tensile strength at 200C 1087
Min Principal stress -390 Compressive yield strength at 200C -946
TCDIM.29472
Acceptable stress level.Deposited energy on the downstream magnet is acceptable (thanks to G. Steele).Best candidate.
Properties @ RTDensity ~ 4.8g/ccCTE ~ 8.75.10-6 /KE ~ 106 GPa
Peak energy deposition in the downstream magnet coils, depending on the mask material
SS 304L mask Invar mask Inconel mask Titanium mask
Peak Energ. Dep on coil 35 J/cm^3 34 J/cm^3 34 J/cm^3 37 J/cm^3
Temp increase in coil 10° 10° 10° 11°
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TCDIM New simulations (EN-STI)ANSYS Model and Mesh
ANSYS MQI Simplified model (no losange shape)212784 elementsElement midside nodes droppedSOLID185 element used (8 nodes hexagonal element)26 elements radially95 elements longitudinally88 elements in PHI
Cylindrical coordinate system ID: 12
FLUKA MQI Binning:24 elements radially40 elements longitudinally180 elements in PHI
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