CEA Codes forum

Dear Didier,
The emittance plot in TraceWin shows a plot with legend E_t, May you please briefly explain what exactly this parameter is?

Thank you

With Regards
Abhishek Pathak

Dear Abhishek,

Et corresponds to sqrt(Emit_4D). Emit_4D is the 4-dimensional transverse emittance or the determinant of the 4-dimensional transverse beam matrix. Exactly, this is (βγ)² x sqrt(4D_determinant beam matrix).

Regards,

Didier