Differences

This shows you the differences between two versions of the page.

--- modes_of_operation [2016/01/19 12:33]
pereira [Focus Mode]
+++ modes_of_operation [2016/01/19 12:33]
pereira [Focus Mode]
@@ Line 6: / Line 6: @@
-{{:wiki:focused.png?700|Ion optics diagram for S800 in focus mode.}}
+{{:wiki:focused.png?750|Ion optics diagram for S800 in focus mode.}}
 ===== Dispersion-matching Mode =====
 In the dispersion-matching mode the whole system ([[Introduction#Analysis Line|analysis line]] + [[Introduction#Spectrograph|spectrograph]])  is achromatic in the focal plane (see [[Fig. xxx]]). The analysis line has a 2D focus (in the dispersive //x// and non-dispersive //y// directions ) in the target point and has a high dispersion of about 11 cm/%, limiting the momentum acceptance to ±0.5%. The intermediate image plane has also a 2D focus and a dispersion of 1.5 cm/%. This mode provides the highest possible energy resolution (1 part in 5000 for a 1-mm wide beam spot), since it does not require momentum tracking.

S800 Documentation