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group_secar2.0 [2018/09/13 16:25]
wagner [Optics misalignments]
group_secar2.0 [2018/09/13 16:49] (current)
plastun
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 36: Line 37:
 With the spot size on the target, designed to be ±0.5 mm (1σ), the anglular spread then is ±15 mrad.\\ With the spot size on the target, designed to be ±0.5 mm (1σ), the anglular spread then is ±15 mrad.\\
 Adding the calculated spread from the reaction with the target of 0.13 deg = ±2.26 mrad we get ±17.26 mrad of angular spread.\\ Adding the calculated spread from the reaction with the target of 0.13 deg = ±2.26 mrad we get ±17.26 mrad of angular spread.\\
-⇒COSY beam input: SB 0.0005 **0.01726** 0 0.0005 **0.01726** 0 0 0.0047 0 0 0 ;\\+⇒COSY beam input:  
 +<code>SB 0.0005 **0.01726** 0 0.0005 **0.01726** 0 0 0.0047 0 0 0 ;</code>\\
 Output for this beam passing the dipole: Output for this beam passing the dipole:
 {{ :dipole46cr13.png?400 |}} {{ :dipole46cr13.png?400 |}}
Line 114: Line 116:
 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 143: Line 147:
 |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|
Line 185: Line 189:
 </code> </code>
 {{ :different_beams.png?400 |}} {{ :different_beams.png?400 |}}
-One can see how Wien filter cleans the recoils from the projectile beam.+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/attic/group_secar2.0.1536870328.txt.gz · Last modified: 2018/09/13 16:25 by wagner