JINA-CEE ION OPTICS SUMMER SCHOOL: JIOSS 2018

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group_secar2.0 [2018/09/11 16:47]
wagner 		group_secar2.0 [2018/09/11 17:23]
wagner [Emittance Measurement]
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 === Quadrupole strenght variations for emittance measurment === === Quadrupole strenght variations for emittance measurment ===
  
-|B<sub>Q7</sub> [T] |X<sub>max</sub>[m] |ap [m] |Bρ* [Tm] |L<sub>Q7</sub> [m] |K| +|B<sub>Q7</sub> [T] |X<sub>max</sub>[m] |ap [m] |Bρ* [Tm] |L [m] |K| 
-|0.02 |2.91E-03 |0.13 |0.8 |0.34 |0.065384615| +|0.02 |2.91E-03 |0.13 |0.8 |6.085 |0.065384615| 
-|0.01 |2.27E-03 |0.13 |0.8 |0.34 |0.032692308| +|0.01 |2.27E-03 |0.13 |0.8 |6.085 |0.032692308| 
-|0 |1.62E-03 |0.13 |0.8 |0.34 |0| +|0 |1.62E-03 |0.13 |0.8 |6.085 |0| 
-|-0.01 |1.20E-03 |0.13 |0.8 |0.34 |-0.032692308| +|-0.01 |1.20E-03 |0.13 |0.8 |6.085 |-0.032692308| 
-|-0.02 |9.08E-04 |0.13 |0.8 |0.34 |-0.065384615| +|-0.02 |9.08E-04 |0.13 |0.8 |6.085 |-0.065384615| 
-|-0.03 |6.23E-04 |0.13 |0.8 |0.34 |-0.098076923| +|-0.03 |6.23E-04 |0.13 |0.8 |6.085 |-0.098076923| 
-|-0.04 |9.54E-04 |0.13 |0.8 |0.34 |-0.130769231| +|-0.04 |9.54E-04 |0.13 |0.8 |6.085 |-0.130769231| 
-|-0.05 |1.60E-03 |0.13 |0.8 |0.34 |-0.163461538| +|-0.05 |1.60E-03 |0.13 |0.8 |6.085 |-0.163461538| 
-|-0.06 |2.26E-03 |0.13 |0.8 |0.34 |-0.196153846|\\+|-0.06 |2.26E-03 |0.13 |0.8 |6.085 |-0.196153846|\\
  
 *Bρ the magnetic rigidity was extracted from COSY by comand CONS(CHIM)\\ *Bρ the magnetic rigidity was extracted from COSY by comand CONS(CHIM)\\
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 {{ :plot.png?400 |}} {{ :plot.png?400 |}}
 +
 +Fit result for parabola X<sub>max</sub><sup>2</sup> = σ<sub>11</sub> = a·K<sup>2</sup> - 2ab·K + ab<sup>2</sup> + c is:\\
  
 a = 0.000362572706 \\ a = 0.000362572706 \\
 b = 0.0834414129893 \\ b = 0.0834414129893 \\
 c = 3.506973286e-07\\ c = 3.506973286e-07\\
-X<sub>max</sub><sup>2</sup> = σ<sub>11</sub> = aK<sup>2</sup> - 2abK + ab<sup>2</sup> + c + 
-The consistency check for beam size calculation in Q7 shows: X_calculated = 3.13mm, X_cosy_read_out = 3.16mm at the Q7 exit.\\ +The consistency check for beam size calculation in Q7 shows:\\ 
-Emittance = 3.045387898578198e-07  π m rad= 0.3 π mm mrad.\\ +X_calculated = 3.13mm, X_cosy_read_out = 3.16mm at the Q7 exit.\\ 
-Start beam emittance= XX * AX= 0.2 π mm mrad, so the emittance grows from the start to the focal point.\\ +Emittance calculated from fit parameters ε= √(ac) / L<sup>2</sup> = 3.05E-7 π m rad = **0.305 π mm mrad**.\\ 
-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.\\+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. 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

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