Elegant users forum

Hello,
Is there a way to pass the number of to a SCRIPT element can have this info (I have a SCRIPT element in a ring and wants it to be on only for certain pass). Likewise in a ring how could I turn off the SCRIPT command when the &closed_orbit is used.

Thank you, -- Philippe.

Philippe,

To pass the pass number to a SCRIPT, use the "%p" sequence in the COMMAND, e.g., In this case, the script will get the input filename, output filename, and pass number, in that order, in its arguments.

To turn off the script for closed orbits (and other operations involving the transport matrix), add the DRIFT_MATRIX=1 qualifier.

--Michael

All,
Is there a way to vary a parameter on a turn-by-turn basis in a ring? (e.g. changing the strength of a quadruple as a function of pass number). I thought vary_element could do that but it seems not to be the case. Thank you, -- Philippe.

Philippe,

You can do this with the ramp_elements or modulate_elements command. See the attached files for an example.

--Michael