JINA-CEE ION OPTICS SUMMER SCHOOL: JIOSS 2018

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group_secar2.0 [2018/09/11 14:41]
plastun 		group_secar2.0 [2018/09/11 16:14]
wagner
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 Group SECAR2.0 Group SECAR2.0
  
-Reaction: <sup>45</sup>V(p,γ)<sup>46</sup>Cr\\+-by Alex, Nadeesha and Louis- 
 + 
 +====== DAY1======\\ 
 + 
 +===== Getting started =====\\ 
 +Choosen example reaction: <sup>45</sup>V(p,γ)<sup>46</sup>Cr\\ 
 +⇒important for <sup>44</sup>Ti production rate in core collapse Supernova ([[https://www.sciencedirect.com/science/article/pii/S0375947403008704|Horoi et al. Nucl.Phys.A 718, (2003)]])\\
 Beam: <sup>45</sup>V<sup>13+</sup> of 135 MeV (1% enegry spread)\\ Beam: <sup>45</sup>V<sup>13+</sup> of 135 MeV (1% enegry spread)\\
 {{ :dipole.png?300 |}}\\ {{ :dipole.png?300 |}}\\
-Matrix:\\+**Understanding COSY Matrix output:**\\
 |1.0|0.0|0.0|0.0|-0.41| |1.0|0.0|0.0|0.0|-0.41|
 |2.2|1.0|0.0|0.0|-0.35|\\ |2.2|1.0|0.0|0.0|-0.35|\\
Line 28: Line 34:
 {{ :dipole46cr13.png?400 |}} {{ :dipole46cr13.png?400 |}}
  
-Q7 strenght variation:\\ +**DAY2**\\
-|Q7 [T]|profile [mm]| +
-|0.3401|29.0|\\ +
-|-0.3401|5.6|\\ +
 **Emittance measurement**\\ **Emittance measurement**\\
 Distance between Q7 center and focal plane is 6.085 m. Distance between Q7 center and focal plane is 6.085 m.
 {{ :emittance.png?400 |}} {{ :emittance.png?400 |}}
  
-B Xmax ap Brho L K +**Q7 strenght variation:**\\ 
-0.02 2.91E-03 0.13 0.8 0.34 0.065384615 +|B [T] |Xmax[m] |ap [m] |Brho* [Tm] |L [m] |K| 
-0.01 2.27E-03 0.13 0.8 0.34 0.032692308 +|0.02 |2.91E-03 |0.13 |0.8 |0.34 |0.065384615| 
-0 1.62E-03 0.13 0.8 0.34 0 +|0.01 |2.27E-03 |0.13 |0.8 |0.34 |0.032692308| 
--0.01 1.20E-03 0.13 0.8 0.34 -0.032692308 +|0 |1.62E-03 |0.13 |0.8 |0.34 |0| 
--0.02 9.08E-04 0.13 0.8 0.34 -0.065384615 +|-0.01 |1.20E-03 |0.13 |0.8 |0.34 |-0.032692308| 
--0.03 6.23E-04 0.13 0.8 0.34 -0.098076923 +|-0.02 |9.08E-04 |0.13 |0.8 |0.34 |-0.065384615| 
--0.04 9.54E-04 0.13 0.8 0.34 -0.130769231 +|-0.03 |6.23E-04 |0.13 |0.8 |0.34 |-0.098076923| 
--0.05 1.60E-03 0.13 0.8 0.34 -0.163461538 +|-0.04 |9.54E-04 |0.13 |0.8 |0.34 |-0.130769231| 
--0.06 2.26E-03 0.13 0.8 0.34 -0.196153846+|-0.05 |1.60E-03 |0.13 |0.8 |0.34 |-0.163461538| 
 +|-0.06 |2.26E-03 |0.13 |0.8 |0.34 |-0.196153846|\\ 
 + 
 +*Brho the magnetic rigidity was extracted from COSY by comand CONS(CHIM)\\ 
 + 
 +**Fit of the data to parabola** 
 +{{ :plot.png?400 |}} 
 + 
 +a = 0.000362572706 \\ 
 +b = 0.0834414129893 \\ 
 +c = 3.506973286e-07\\ 
 +Double check for beam size calculation in Q7: X_calculated = 3.13mm, X_cosy_read_out = 3.16mm at the Q7 exit.\\ 
 +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.\\ 
 +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. 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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