CEA Codes forum

Dear Didier: Edge element is treated as thin lens in TraceWin, and the transfer matrix is defined by 5 parameters: K1, K2, gap, curvature radius, edge angle. I tried to export the field map of a dipole with edge angles but the field map doesn't exit in hard edge model: EDGE 15 3500 120 0 0 70 1 BEND...

dear didier, I have a question about phase error simulation. Does the TraceWin consider the influence of the phase error of the previous cavity on the phase error of the later cavity at the error simulation mode? That is, the change of the phase of the second cavity is the influence of the phase err...

Seems it works. Thank you!

Hi Didier, My lattice file is written as below: Field_map_path Field_Maps/3D SUPERPOSE_MAP 0 0 0 0 0 0 FIELD_MAP 0070 1160 0 150 -1.08704 0 0 0 Q1 0 SUPERPOSE_MAP 0 0 0 0 0 0 FIELD_MAP 10000 1160 0 150 -1.08704 0 0 0 Q1_APTR 0 SUPERPOSE_MAP 1000 0 0 0 0 0 FIELD_MAP 0070 1000 0 250 1.01208 0 0 0 Q2 0...

I see. Thank you!

OK, I see. In that case, "Ka" should be set to 0 if my understanding is correct? And how to define the field_map file (I mean, it is still in .ouv file or just field map files)?

Hi Didier,

I don't quite get your point. "FIELD_MAP 1000 ..." also defines round apertures, right?

Hi Didier,

I noticed there's a way to define the aperture in field maps with .ouv file, but the aperture is round. I'm wondering if it's possible to define rectangular aperture? I was doing some work about dipole field maps, in which the aperture is a rectangle.

Kinds,
shliu

I got it. Thank you!

Hi Didier,

Attached the .ini file.

There's an error message when I tried to attach the .dat file, so I put the content here:

EDGE 0 800 110 0 0 50 0
BEND 45 800 0 50 0
EDGE 45 800 110 0 0 50 0
end