Set symplectic option on

This operation sets the symplectic option on. As soon as this operation is executed all the matrices are transformed to the six dimensional space defined by the canonical variables x,px,y,py,-tau=-t*c=-al,DE/E. Please note that,in the present implementation the approximation v/c=1 was made. All the movement analyses performed in the program relate to the matrix and so the values will change when this option is on. Please note that this operation changes the sign of the fifth parameter. This may need to be taken into account in the definition of the lag parameter of cavities!!!.

NOTE: In the present version of the program , this option cannot be followed by any fitting which changes matrices. Any fitting not changing matrices is allowed (eg: in alignment fitting when steering only is involved)

Input format 


SET Symplectic option on......(up to 80 characters) 


Option Energy

Parameter definitions

Option $\parbox{10cm}{Determines the mode of tracking. This affects only t... ... not those based on matrix analysis (MATRIX, BEAM MATRIX, MACHINE FUNCTIONS)}$

0 $\parbox{10cm}{ non symplectic ray trace is done using the canonical matrices.}$

1 $\parbox{10cm}{ Fast version of ray trace is done with the variables $x,x',y,y',l,\delta$\ and using the canonical matrices.}$

2 $\parbox{10cm}{ Fast version of ray trace is done with the variables $x,p_{x},y,p_{y},-\tau ,\Delta E/E$\ and using the canonical matrices.}$

3 $\parbox{10cm}{ Slow version of ray trace is done with the variables $x,x',y,y',l,\delta$\ and using the canonical matrices.}$

4 $\parbox{10cm}{ Slow version of ray trace is done with the variables $x,p_{x},y,p_{y},-\tau ,\Delta E/E$\ and using the canonical matrices.}$

Energy $\parbox{10cm}{ Energy of nominal particle (in GeV)}$

Note: Options 3 and 4 are not for the general user. They have been used and maintained for debugging purposes only.

Examples

The example comes from demo11. Other examples can be found in demos 2 and 9.

set symplectic option: lagrangian variables, fast ray trace
1 6.,