| 6 | | Simulations presented ([raw-attachment: 2 Quad Combinations.pdf BDSIM Visuals]) to show optimal quad positions of the quad combinations using the SCAPA divergence with a pencil beam. 4cm2cm, 6cm4cm and 6cm2cm quads gives best transmission as with previous beam, all above 10% with this beam but while 4cm2cm has lowest transmission of the 3, the position of the first quad is most appropriate and beam shape is more circular at the target- potentially the best option. Sensitivity simulations shifting the quads up to 1mm in the x and y directions show that the quads are very sensitive even at 0.01mm. Quad 1 was much more sensitive than quad 2, automated mounting system should be placed on quad 1. Next step to move the source in the y direction as SCAPA has been having issues with this, see what issues may arise. |
| | 6 | Simulations presented ([raw-attachment: 2 Quad Combinations.pdf]) to show optimal quad positions of the quad combinations using the SCAPA divergence with a pencil beam. 4cm2cm, 6cm4cm and 6cm2cm quads gives best transmission as with previous beam, all above 10% with this beam but while 4cm2cm has lowest transmission of the 3, the position of the first quad is most appropriate and beam shape is more circular at the target- potentially the best option. Sensitivity simulations shifting the quads up to 1mm in the x and y directions show that the quads are very sensitive even at 0.01mm. Quad 1 was much more sensitive than quad 2, automated mounting system should be placed on quad 1. Next step to move the source in the y direction as SCAPA has been having issues with this, see what issues may arise. |
