JINA-CEE ION OPTICS SUMMER SCHOOL: JIOSS 2018

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group_secar2.0 [2018/09/13 16:12]
wagner [Optics misalignments] 		group_secar2.0 [2018/09/13 16:47]
wagner
Line 12: Line 12:
 {{ :dipole.png?300 |}}\\ {{ :dipole.png?300 |}}\\
 ====Understanding COSY Matrix output==== ====Understanding COSY Matrix output====
-Command: OV 1 1 0 ; {order 1, phase space dim 1 INCLUDING ENERGY, # of parameters 0}\\+Command:  
 +<code>OV 1 1 0 ; {order 1, phase space dim 1 INCLUDING ENERGY, # of parameters 0}</code>\\
 Output:\\ Output:\\
 |1.0|0.0|0.0|0.0|-0.41| |1.0|0.0|0.0|0.0|-0.41|
Line 114: Line 115:
 SRDE:= 0.0; SRDE:= 0.0;
 </code> </code>
 +The rays now look like this (not all the rays are displayed):
 +{{ :rays.png?400 |}}
  
 Created loop for target position. Observed piece-wise curve for resolution vs target offset (meters) (see figure below) in case of 4th order calculation. If order reduced to the 1st, than curve is smooth, but maximum resolution is shifted. Created loop for target position. Observed piece-wise curve for resolution vs target offset (meters) (see figure below) in case of 4th order calculation. If order reduced to the 1st, than curve is smooth, but maximum resolution is shifted.
Line 122: Line 125:
 {{ :transv.png?450 |}} {{ :transv.png?450 |}}
 The resolution drops by 5% at the beam offsets (-0.8 mm, +0.5 mm). The offset is of the beam half-size order. \\ The resolution drops by 5% at the beam offsets (-0.8 mm, +0.5 mm). The offset is of the beam half-size order. \\
 +
 +**Beam size.**\\
 +Change beam size with SCALING_FACTOR = (0.5..1.5):
 +<code>
 +SRXX:= XX*COS(PHI*3.14159/180)*SCALING_FACTOR
 +</code>
 +Resolution reasonably drops with larger beam size.
 +{{ :beam_size.png?400 |}}
  
 **Dipole 4 position. Transvers offset**\\ **Dipole 4 position. Transvers offset**\\
-{{:transvers_shift_b4.jpg?450|}}\\+{{ :transvers_shift_b4.jpg?450 |}}\\
  
 **Dipole 4 position. Longitudinal offset**\\ **Dipole 4 position. Longitudinal offset**\\
-{{:longitudinal_shift_b4.jpg?450|}}\\+{{ :longitudinal_shift_b4.jpg?450 |}}\\ 
 + 
 +**Dipole 4 position. Pitch**\\ 
 +{{ :pitch_b4.jpg?400 |}}
  
 |Element|Variable |Range of ±5%| |Element|Variable |Range of ±5%|
 |Beam|transverse|-5..+7 mm| |Beam|transverse|-5..+7 mm|
 |Beam|longitudinal|-0.8..+0.5 mm| |Beam|longitudinal|-0.8..+0.5 mm|
-|Beam|size|-x..+x|+|Beam|size|-6%..+6%|
 |B4|transverse|-4..+1 mm| |B4|transverse|-4..+1 mm|
-|B4|longitudinal-10..+55 mm|+|B4|longitudinal|-10..+55 mm| 
 +|B4|pitch|-0.11..0.024 rad|
  
 ==== Recoil tracking in SECAR ==== ==== Recoil tracking in SECAR ====
Line 173: Line 188:
 </code> </code>
 {{ :different_beams.png?400 |}} {{ :different_beams.png?400 |}}
 +One can see how Wien filter cleans the recoils from the projectile beam at FP2.
 ---- ----
 THANK YOU FOR VISITING OUR PAGE THANK YOU FOR VISITING OUR PAGE
  
/srv/thewikis/JIOSS/data/pages/group_secar2.0.txt · Last modified: 2018/09/13 16:49 by plastun

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