Elegant users forum

Max, I still see that problem mentioned above. However, yours is different. It won't completely restore the orbit if you use two MALIGN element as described in your message. You would get a displacement at the end due to the misalignment angle. You will need to correct that as following: MA1: dxp=th...

Michael, I found BPMs (MONI elements) have misalignment errors (DX and DY) too. In this case, what would the beam be corrected to if I use the correct command? Suppose the magnets are centered on a girder and the girder has misalignment errors. One wants to correct the beam to the center of the magn...

Michael,

Could you add synchron radiation loss to ukickmap as what you did to Wiggler and Cwiggler? I guess you have similar subroutines.


Weiming

Michael, We know Elegant has a closed orbit correction function, but it cannot correct beta functions. For simulation the beta functions always have to be corrected in presence of errors, even just with misalignment error. Anothe example is when IDs are added. I wrote one using tcl and sdds, but the...

Hi Michael,

I use MALIGN element to search for the maximum stable offsets. However, no matter where I put it, it displaces the coordinates as if it is at the beginning of the beamline. In other words, I always get the same dynamic aperture even if I move that element along the beamline.

Weiming

The maximum allowed number of attachment is 3, so I attached them here.


Weiming

Radia kickmap is really simple in terms of scripting. I implemented the method into Elegant by using a SCRIPT element. In the lte file, the script element is defined as DWSCRIPT: SCRIPT,COMMAND="./DWkickmap -input %i -output %o -Bmax %np0 -kickmapFile %sp0",& verbosity=1,NP0=1.0, SP0="W90v5_pole80mm...

To run the script command, one has to set the concat_order to 0, the default value, in the run_setup command; otherwise Elegant would ignore the script element.

Weiming Guo

Michael, Thanks! That was quick. I found another way to do it: sddsprocess aps.twi -pipe=out -delete=col,* -retain=col,betax,betay \ | sddstranspose -pipe \ | sddsbreak -pipe -rowlimit=1 \ | sddstranspose -pipe \ | sddscombine -pipe -merge \ | sddsconvert -pipe=in oneColumn.twi -rename=col,betax=dbe...

Can one of the gurus tell me how to concatenate two columns in an sdds file into one column? I use list to do it but I think it is very awkward. The question comes from the attempt to make a response matrix. If a quadrupole strength changes, both betax and betay change and I had to connect two colum...