Wrapup of Electrostatic and Magnetostatic Analysis of Target

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Wrapup of Electrostatic and Magnetostatic Analysis of Target Region ANSYS model results and conclusions

Wrapup of Electrostatic and Magnetostatic Analysis of Target Region ANSYS model results and conclusions R. E. Mischke 1 October 2001

E field (deep recess) S EFSUM 0. 0000 11. 759 3. 7500 11. 749

E field (deep recess) S EFSUM 0. 0000 11. 759 3. 7500 11. 749 7. 5000 11. 757 10. 600 11. 762 14. 350 11. 764 18. 100 11. 765 21. 200 11. 074 24. 950 12. 221 28. 700 11. 022

V (deep recess)

V (deep recess)

E field (default recess) S EFSUM 0. 0000 11. 807 3. 7000 11. 697

E field (default recess) S EFSUM 0. 0000 11. 807 3. 7000 11. 697 7. 4000 11. 799 10. 500 11. 883 14. 200 11. 627 17. 900 11. 892 21. 000 11. 651 24. 700 11. 543 28. 400 11. 756

V (default recess)

V (default recess)

E field (shallow recess) S EFSUM 0. 0000 11. 842 3. 7500 11. 666

E field (shallow recess) S EFSUM 0. 0000 11. 842 3. 7500 11. 666 7. 5000 11. 824 10. 600 11. 957 14. 350 11. 544 18. 100 11. 987 21. 200 12. 876 24. 950 11. 170 28. 700 12. 545

V (shallow recess)

V (shallow recess)

Rounded corners S EFSUM 0. 0000 11. 805 3. 7000 11. 700 7. 4000

Rounded corners S EFSUM 0. 0000 11. 805 3. 7000 11. 700 7. 4000 11. 797 10. 500 11. 873 14. 200 11. 637 17. 900 11. 882 20. 450 11. 438 23. 650 11. 554 26. 850 11. 422

No recess S EFSUM 0. 0000 11. 917 3. 7500 11. 603 7. 5000

No recess S EFSUM 0. 0000 11. 917 3. 7500 11. 603 7. 5000 11. 864 10. 600 12. 094 14. 350 11. 381 18. 100 12. 171 21. 200 14. 378 24. 950 10. 481 28. 700 13. 938

Shorten plates S EFSUM 0. 0000 11. 858 3. 7500 11. 601 7. 5000

Shorten plates S EFSUM 0. 0000 11. 858 3. 7500 11. 601 7. 5000 11. 926 10. 600 12. 183 14. 350 11. 376 18. 100 12. 091 21. 200 14. 207 24. 950 10. 452 28. 700 14. 184

Balance dielectric S EFSUM 0. 0000 11. 870 3. 7500 11. 651 7. 5000

Balance dielectric S EFSUM 0. 0000 11. 870 3. 7500 11. 651 7. 5000 11. 824 10. 600 11. 978 14. 350 11. 504 18. 100 12. 044 21. 200 13. 160 24. 950 10. 970 28. 700 12. 812

E field (smaller cell) 17. 5 cm S EFSUM 0. 0000 11. 871 3.

E field (smaller cell) 17. 5 cm S EFSUM 0. 0000 11. 871 3. 7500 11. 640 7. 5000 11. 858 9. 9000 11. 950 13. 650 11. 578 17. 400 11. 977 19. 900 11. 440 23. 650 11. 553 27. 400 11. 307

E field (small cell, shorten plates) 16. 33 cm S EFSUM 0. 0000 11.

E field (small cell, shorten plates) 16. 33 cm S EFSUM 0. 0000 11. 865 3. 6500 11. 641 7. 4000 11. 858 9. 8000 11. 951 13. 550 11. 578 17. 200 11. 956 19. 700 11. 802 23. 350 11. 550 27. 100 11. 980

E field (reduce plate size) 14. 96 cm S EFSUM 13. 69 cm S

E field (reduce plate size) 14. 96 cm S EFSUM 13. 69 cm S EFSUM 12. 42 cm S EFSUM 0. 0000 11. 870 0. 0000 11. 874 0. 0000 11. 882 3. 6500 11. 641 3. 6500 11. 640 7. 4000 11. 853 7. 4000 11. 849 7. 4000 11. 841 9. 8000 11. 945 9. 8000 11. 939 9. 8000 11. 931 13. 550 11. 578 13. 550 11. 577 17. 200 11. 962 17. 200 11. 968 17. 200 11. 978 19. 700 11. 840 19. 700 11. 713 19. 700 11. 791 23. 350 11. 549 23. 350 11. 548 23. 350 11. 547 27. 100 12. 031 27. 100 11. 866 27. 100 11. 816

E field (10 cm plate) 35 cm shell 9. 88 cm S EFSUM 0.

E field (10 cm plate) 35 cm shell 9. 88 cm S EFSUM 0. 0000 11. 916 3. 6500 11. 638 7. 4000 11. 813 9. 8000 11. 898 13. 550 11. 572 17. 200 12. 021 19. 700 11. 750 23. 350 11. 523 27. 100 11. 706

E field (10 cm plate) 25 cm shell S EFSUM 0. 0000 11. 975

E field (10 cm plate) 25 cm shell S EFSUM 0. 0000 11. 975 3. 6500 11. 639 7. 4000 11. 754 9. 8000 11. 825 13. 550 11. 573 17. 200 12. 093 19. 700 11. 998 23. 350 11. 526 27. 100 11. 635

E field (10 cm plate) 30 cm shell S EFSUM 0. 0000 11. 935

E field (10 cm plate) 30 cm shell S EFSUM 0. 0000 11. 935 3. 6500 11. 638 7. 4000 11. 794 9. 8000 11. 874 13. 550 11. 572 17. 200 12. 045 19. 700 11. 392 23. 350 11. 524 27. 100 11. 307

E field (conclusions) ü Uniformity in cell: 0. 1% without side walls 1% with

E field (conclusions) ü Uniformity in cell: 0. 1% without side walls 1% with recess ü Peak E field is ~1. 5 of value in cell ü Next step 3 D model

mbig Coil: 35 cm radius x 1393 mm half length Shield: 56. 0 cm

mbig Coil: 35 cm radius x 1393 mm half length Shield: 56. 0 cm radius x 1418 mm half length -. 2 -. 1 -. 2 0 (6 cm) y 0 z (25 cm) -. 1 0. 2 x (10 cm) 0. 1

B field conclusions üUniformity 0. 1% over target cells achieved Nonuniform coil spacing required

B field conclusions üUniformity 0. 1% over target cells achieved Nonuniform coil spacing required Position of superconducting shield tuned üNext step try to reduce dimensions of coil and shield

current dimensions that meet design criteria HV plate: 4 in thick × 30 cm

current dimensions that meet design criteria HV plate: 4 in thick × 30 cm wide × 80 cm long Ground plates: 2 in thick × 25 cm wide × 75 cm long Gap: 3 in Target cell: 3 in × 4 in × 50 cm, plus ½ in walls Coil radius (ground cylinder): 30 cm Coil length: 2. 4 m Superconducting shield: 48 cm radius × 2. 43 m long

HV test setup

HV test setup

Detail of HV test

Detail of HV test

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