1 / 22

Fixing an ECLOUD bug for tall beams

Fixing an ECLOUD bug for tall beams. G. Iadarola , C. Bhat , G. Rumolo , F. Zimmermann. e - cloud Simulation Meeting 27 June 2011. PS bending magnet simulations. y. b. σ y. a. σ x. x. a = 7.3 cm b = 3.5 cm. Filling pattern. 72. 16. 72. 16. 72. 16. 264 buckets.

brody
Download Presentation

Fixing an ECLOUD bug for tall beams

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Fixing an ECLOUD bug for tall beams G. Iadarola, C. Bhat, G. Rumolo, F. Zimmermann e- cloud Simulation Meeting 27 June 2011

  2. PS bending magnet simulations y b σy a σx x a = 7.3 cm b = 3.5 cm Filling pattern 72 16 72 16 72 16 264 buckets

  3. The problem is in the Beam Kick Computation y b E σy a σx x

  4. The problem is in the Beam Kick Computation y b E σy a σx x

  5. The problem is in the Beam Kick Computation y y b E E0 σy σy a σx σx x x Beam field calculated in free space

  6. The problem is in the Beam Kick Computation y y b E0 E σy σy a σx σx x x Beam field calculated in free space Image charge contributions (effect of the perfectly conducting chamber) y Eimag. ch. b a x

  7. Beam kick computation y E0 Beam field calculated in free space σy σx x Based on the Bassetti-Erskine formula: where: Valid in this form only for:

  8. Beam kick computation y E0 Beam field calculated in free space σy σx x Based on the Bassetti-Erskine formula: where: Valid in this form only for:

  9. Beam kick computation y E0 Beam field calculated in free space Image charge contributions (effect of the perfectly conducting chamber) σy σx x Based on the Bassetti-Erskine formula: Image contributions of a point charge: y Eimag. ch. b where: where: a x With: Valid in this form only for: No concern about

  10. Beam kick computation y E0 Beam field calculated in free space Image charge contributions (effect of the perfectly conducting chamber) σy σx x Based on the Bassetti-Erskine formula: Image contributions of a point charge: y Eimag. ch. b where: where: a x With: Valid in this form only for: No concern about

  11. Beam Kick Computation for a tall beam y b E σy a σx x

  12. Beam Kick Computation for a tall beam y y b E0 E σy σy a σx σx x x Beam field calculated in free space Image charge contributions (effect of the perfectly conducting chamber) y Eimag. ch. b a x

  13. Beam kick computation for a tall beam y E0 Beam field calculated in free space σy σx x Based on the Bassetti-Erskine formula: where: Valid in this form only for:

  14. Beam kick computation y E0 Beam field calculated in free space σy σx x x’ Based on the Bassetti-Erskine formula: where: y’ Valid in this form only for:

  15. Beam kick computation y E0 Beam field calculated in free space Image charge contributions (effect of the perfectly conducting chamber) σy σx x x’ Based on the Bassetti-Erskine formula: Image contributions of a point charge: y Eimag. ch. b where: where: a y’ x With: Valid in this form only for: No concern about

  16. PS bending magnet simulations – new version y b σy a σx x a = 7.3 cm b = 3.5 cm Filling pattern 72 16 72 16 72 16 264 buckets

  17. SPS bending magnet simulations y b σy a σx x a = 6.5 cm b = 2.8 cm σx = 1.8 mm σy = 2.7 mm σz = 20.0 cm B. spac. = 25 ns Filling pattern 72 8 72 18 170 buckets

  18. SPS bending magnet simulations y b σy a σx x a = 6.5 cm b = 2.8 cm σx = 1.8 mm σy = 2.7 mm σz = 20.0 cm B. spac. = 25 ns Filling pattern 72 8 72 18 170 buckets

  19. SPS bending magnet simulations y b σy a σx x a = 6.5 cm b = 2.8 cm σx = 1.8 mm σy = 2.7 mm σz = 20.0 cm B. spac. = 25 ns Filling pattern 72 8 72 18 170 buckets

  20. SPS bending magnet simulations y b σy a σx x a = 6.5 cm b = 2.8 cm σx = 1.8 mm σy = 2.7 mm σz = 20.0 cm B. spac. = 25 ns Filling pattern 72 8 72 18 170 buckets

  21. SPS bending magnet simulations y b σy a σx x a = 6.5 cm b = 2.8 cm σx = 1.8 mm σy = 2.7 mm σz = 20.0 cm B. spac. = 25 ns Filling pattern 72 8 72 18 170 buckets

  22. Thanks for your attention!

More Related