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--- group_secar2.0 [2018/09/11 15:37]
wagner
+++ group_secar2.0 [2018/09/11 15:41]
plastun
@@ Line 1: / Line 1: @@
 Group SECAR2.0
+**DAY1
+**\\
 Reaction: <sup>45</sup>V(p,γ)<sup>46</sup>Cr\\
 Beam: <sup>45</sup>V<sup>13+</sup> of 135 MeV (1% enegry spread)\\
@@ Line 28: / Line 30: @@
 {{ :dipole46cr13.png?400 |}}
+**DAY2**\\
 **Emittance measurement**\\
 Distance between Q7 center and focal plane is 6.085 m.
@@ Line 51: / Line 53: @@
 b = 0.0834414129893 \\
 c = 3.506973286e-07\\
-double check for beam size calculation in Q7: X_calculated = X_cosy_read_out = 3.55
+double check for beam size calculation in Q7: X_calculated = X_cosy_read_out = 3.55\\
-Emittance = 3.045387898578198e-07  π m rad= 0.3 π mm mrad
+Emittance = 3.045387898578198e-07  π m rad= 0.3 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\\
+Emittance grows due to the optics aberrations. Input COSY file shows 4th-order-calculation. Also measured points don't fit the parabola ideally, i.e. optics is non-linear.\\

JINA-CEE ION OPTICS SUMMER SCHOOL: JIOSS 2018