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--- group_5 [2018/09/13 16:04]
flowerdew
+++ group_5 [2018/09/14 09:06]
surbrook
@@ Line 11: / Line 11: @@
 {{group5_screen_shot_2018-09-10_at_15.03.08.png }}
 Question 4:
   * Used website to calculate θ<sub>max</sub> and ΔE/E
-    ** Opening angle = 10 mrad which is less than the θ<sub>max</sub>=25 mrad so we're good. \\
+    ** Opening angle = 0.59 deg = 10 mrad which is less than the θ<sub>max</sub>=25 mrad so we're good. \\
-    ** ΔE/E = ~2% which is less than the 3.1% threshold so this also works.\\
+    ** ΔE/E = (12.083-11.593)/(12.083+11.593) ~2% which is less than the 3.1% threshold so this also works.\\
+{{:eandangle15oalpha.png?400|}}
 Question 5:
   * <sup>15</sup>O + α reaction plays a role in the ignition of type I x-ray bursts on accreting neutron stars \\
 Question 6:
@@ Line 26: / Line 31: @@
   * Using 'WRITE 6 VMAX(RAY(1))' x<sub>max</sub> was calculated to be 0.2909704181068736E-002 m
   * Plotting COSY beam size (x) and the quadrupole field strength(divided by aperture radius) and arrived at the graph below. Data doesn't appear to fit the quadratic form too closely.
-  * Calculated emittance is around 50% larger than the 'real' emittance.
+  * Calculated emittance is about 0.3 mm mrad, which is 50% larger than the 'real' emittance.
+{{emittanceexample7.png}}
-{{::emittanceexample7.png?400|}}
 Question 7:
@@ Line 41: / Line 47: @@
 {{Group5_screen_shot_2018-09-13_at_15.48.23.png }}
+  * This optimisation improved the mass resolution from 640.86349 to 724.66207, while still focusing.
+Question 8:
+  * Tolerance for the beam size was found to be 0.00075 +/- 0.00004 m
+  * Tolerance for the beam position was found to be +/- 0.007 m

JINA-CEE ION OPTICS SUMMER SCHOOL: JIOSS 2018

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