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group_secar2.0 [2018/09/13 15:14] plastun |
group_secar2.0 [2018/09/13 16:47] wagner |
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{{ : | {{ : | ||
====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: |
+ | < | ||
Output:\\ | Output:\\ | ||
|1.0|0.0|0.0|0.0|-0.41| | |1.0|0.0|0.0|0.0|-0.41| | ||
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SRDE:= 0.0; | SRDE:= 0.0; | ||
</ | </ | ||
+ | The rays now look like this (not all the rays are displayed): | ||
+ | {{ : | ||
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. | ||
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The resolution drops by 5% at the offsets (-5 mm, +7 mm).\\ | The resolution drops by 5% at the offsets (-5 mm, +7 mm).\\ | ||
- | **Beam position. Transverse offset.** | + | **Beam position. Transverse offset.**\\ |
{{ : | {{ : | ||
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): | ||
+ | < | ||
+ | SRXX:= XX*COS(PHI*3.14159/ | ||
+ | </ | ||
+ | Resolution reasonably drops with larger beam size. | ||
+ | {{ : | ||
+ | |||
+ | **Dipole 4 position. Transvers offset**\\ | ||
+ | {{ : | ||
+ | |||
+ | **Dipole 4 position. Longitudinal offset**\\ | ||
+ | {{ : | ||
+ | |||
+ | **Dipole 4 position. Pitch**\\ | ||
+ | {{ : | ||
+ | |||
+ | |Element|Variable |Range of ±5%| | ||
+ | |Beam|transverse|-5..+7 mm| | ||
+ | |Beam|longitudinal|-0.8..+0.5 mm| | ||
+ | |Beam|size|-6%..+6%| | ||
+ | |B4|transverse|-4..+1 mm| | ||
+ | |B4|longitudinal|-10..+55 mm| | ||
+ | |B4|pitch|-0.11..0.024 rad| | ||
==== Recoil tracking in SECAR ==== | ==== Recoil tracking in SECAR ==== | ||
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{{ : | {{ : | ||
+ | ** ±1 charge state **\\ | ||
+ | |||
+ | Added extra rays: | ||
+ | < | ||
+ | {Define special rays for different charge states} | ||
+ | SR 0 -AX 0 0 0 0.0 0 1/14 2; | ||
+ | SR 0 0 0 0 0 0.0 0 1/14 2; | ||
+ | SR 0 AX 0 0 0 0.0 0 1/14 2; | ||
+ | |||
+ | SR 0 -AX 0 0 0 0.0 0 -1/14 3; | ||
+ | SR 0 0 0 0 0 0.0 0 -1/14 3; | ||
+ | SR 0 AX 0 0 0 0.0 0 -1/14 3; | ||
+ | |||
+ | {Beam 45V14+} | ||
+ | SR 0 -AX 0 0 0 3/132 -1/46 0/14 5; | ||
+ | SR 0 0 0 0 0 3/132 -1/46 0/14 5; | ||
+ | SR 0 AX 0 0 0 3/132 -1/46 0/14 5; | ||
+ | </ | ||
+ | {{ : | ||
+ | One can see how Wien filter cleans the recoils from the projectile beam at FP2. | ||
---- | ---- | ||
+ | THANK YOU FOR VISITING OUR PAGE | ||