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group_secar2.0 [2018/09/11 16:40] wagner |
group_secar2.0 [2018/09/11 16:52] wagner |
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====== Group SECAR2.0 ====== | ====== Group SECAR2.0 ====== | ||
- | -by Alex, Nadeesha and Louis- | + | -- by Alex, Nadeesha and Louis -- |
===== DAY1===== | ===== DAY1===== | ||
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{{ : | {{ : | ||
+ | |||
+ | Fit result for parabola X< | ||
a = 0.000362572706 \\ | a = 0.000362572706 \\ | ||
b = 0.0834414129893 \\ | b = 0.0834414129893 \\ | ||
c = 3.506973286e-07\\ | c = 3.506973286e-07\\ | ||
- | The consistency check for beam size calculation in Q7 shows: X_calculated = 3.13mm, X_cosy_read_out = 3.16mm at the Q7 exit.\\ | + | |
- | Emittance = 3.045387898578198e-07 | + | The consistency check for beam size calculation in Q7 shows:\\ |
+ | X_calculated = 3.13mm, X_cosy_read_out = 3.16mm at the Q7 exit.\\ | ||
+ | Emittance | ||
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 rmittance 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 rmittance 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.\\ | ||