Elegant users forum

Hi, I was wondering if there was some way to toggle off the warning "ALLOW_LONG_BEAM" for the RFCW elements? I read in the manual that it seems like only the "WAKE" elements have this feature. I am running very large scans of parameters, and it much easier to allow the parameters to vary within thes...

Hi Michael, I just wanted to inquire a bit more about the "ILMATRIX" scan for NUX. I have tried doing it by adding a ILMATRIX element into the beamline I want to scan NUX as so: MATRIX : ILMATRIX,l=0,BETAX=3.964955e+01,ALPHAX=2.350896,BETAY=3.875236,ALPHAY=-2.690294e-01,NUX=6.283185307179586 But I g...

Thanks for the speedy help Michael (as always!). Quick question: I am trying to learn a bit more about this optimization routine (I am using simplex) that ELEGANT is implementing in order to get a better understanding (and confidence) of the solutions it spits out. The manual is a bit sparse on deta...

Hi, I am trying to optimize a 3 chicane linac system, but I am getting unexpected results from ELEGANT. While keeping the bunch length and beam energy constant at the exit of the 3rd chicane, I would like ELEGANT to optimize the emittance (enx). I am wondering if I have the correct format in my opti...

Hi, I am looking at various chicane configurations and their effects on CSR emittance growth, and I ran into a configuration that shows a decrease in x-plane emittance which I am having a hard time to explain physically. I have attached the chicane and input beam. I was wondering if you had any thou...

Hi Michael,

First thank for the reply; very helpful! Second, just to check my understanding:

The x,xp value of the *.out file are then measured with respect to the beam's centroid coordinates and not the on energy ideal particle?

Thanks

Hi All, Have a sort of odd problem I ran into yesterday with ELEGANT. I wrote a script manually calculating the x-plane emittance of a beam at some watch point at the exit of a bunch compressor (BX24DEND.out). The issue comes from a significant discrepancy from my calculated emittance and the emitta...

Awesome Michael! Thank you again for all your help and super speedy replies!

Hi Michael, I was curious: I wanted to scan through the bend angles of a 4 bend chicane and plot the {x,x'} phase space at the exit of bend3 (I have a "watch" file at the exit of bend3) for each configuration. I am using the "vary_element" option in the *.ele file to scan through the 4 bend's bendin...

Hi All, I have a curious issue for a very large (~2x) Ss increase after I track through the FIRST RFCA "L2CELL12" in my beamline located at "s=3.702961e+00" . I am trying to account for the Ss increase analytically but I am having trouble. What could be an explanation? Thank you in advance! I have a...