CEA Codes forum

Dear Didier, Thanks for the reply! It works well if there's only one field map in the lattice: DRIFT 0 250 0 0 0 FIELD_MAP 70 1600 0 250 325.509 0 0 0 Solb 0 or DRIFT 0 250 0 0 0 FIELD_MAP 70 2635 0 250 -0.255442 0 0 0 Dipb 0 In the superposed field maps, the second field begins from 450 mm, but it ...

Dear Didier,

Particle spin is an important parameter in nuclear physics. Is it possible to add the consideration of that in multi-particle simulation? Such that beam polarization could be recorded.

Kinds,
shliu

Dear Didier, TraceWin got stuck in superposed field maps. I have attached the project file. tst4field.rar I tried to run separate fields and it works, so I'm wondering if it's the problem of the input beam distribution. Could you please help me to check it? OS: Win11 Version: 2.33.4.2 Kinds, shliu

Dear Didier, There are some commands for beam size and divergence matching at different locations, including "DIAG_DSIZE2_FWHM", "DIAG_DSIZE2", "DIAG_DSIZE3", "DIAG_DPSIZE2". If there's a case that only X-plane matching is needed, then how to set the diag command? I suggest setting 2 matching accura...

Thank you!

I see. α=-<zz'>/ε.

Thank you!

Then how to get σ_dp/p, or σ_z', or σ_E?

I mean there's only e_z and σ_z in partran1.out, and beam twiss parameter γ could not be identified.

At the output, σ_z= 6.0138 mm, σ_dp/p=0.0542 %. Then <z.dp/p>(mm.%)=6.0138 * 0.0542=0.3259.

But it is 0.2582859 In column 41.

If my understanding is correct, they are different in .dst and partran1.out.

The same project file as that in the last post:

But σ_φ is different in my case:

σ_φ=7.0231 deg in .dst, while it is 7.022882 deg in partran1.out file.