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group_secar2.0 [2018/09/11 17:22]
wagner
group_secar2.0 [2018/09/11 17:23]
wagner [Emittance Measurement]
Line 75: Line 75:
 Emittance calculated from fit parameters ε= √(ac) / L<sup>2</sup> = 3.05E-7 π m rad = 0.305 π mm mrad.\\ Emittance calculated from fit parameters ε= √(ac) / L<sup>2</sup> = 3.05E-7 π m rad = 0.305 π mm mrad.\\
 Start beam emittance= XX * AX= 0.2 π mm mrad, so the emittance grows from the start to the focal point.\\ Start beam emittance= XX * AX= 0.2 π mm mrad, so the emittance grows from the start to the focal point.\\
-This emittance grow is possibly due to the optics aberrations. Input COSY file does a 4th-order-calculation. Also the measured points don't fit the parabola ideally, i.e. the optics is non-linear.]\\+This emittance grow is possibly due to the optics aberrations. That is because the input COSY file does a 4th-order-calculation. Also the measured points don't fit the parabola ideally, i.e. the optics is non-linear.\\
  
  
/srv/thewikis/JIOSS/data/pages/group_secar2.0.txt · Last modified: 2018/09/13 16:49 by plastun