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--- group_secar2.0 [2018/09/13 16:01]
wagner [Optics misalignments]
+++ group_secar2.0 [2018/09/13 16:20]
plastun
@@ Line 122: / Line 122: @@
 {{ :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. \\
+**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**\\
-{{:transvers_shift_b4.jpg?450|}}\\
+{{ :transvers_shift_b4.jpg?450 |}}\\
 **Dipole 4 position. Longitudinal offset**\\
-{{:longitudinal_shift_b4.jpg?450|}}\\
+{{ :longitudinal_shift_b4.jpg?450 |}}\\
+|Element|Variable |Range of ±5%|
+|Beam|transverse|-5..+7 mm|
+|Beam|longitudinal|-0.8..+0.5 mm|
+|Beam|size|-x..+x|
+|B4|transverse|-4..+1 mm|
+|B4|longitudinal-10..+55 mm|
 ==== Recoil tracking in SECAR ====
@@ Line 147: / Line 162: @@
 {{ :46cr_recoil_in_secar.png?300 |}}
+** ±1 charge state **\\
+Added extra rays:
+<code>
+{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;
+</code>
+{{ :different_beams.png?400 |}}
+One can see how Wien filter cleans the recoils from the projectile beam.
 ----
 THANK YOU FOR VISITING OUR PAGE

JINA-CEE ION OPTICS SUMMER SCHOOL: JIOSS 2018

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