CHIPS IAC Run 5-27-08

Beam Tuning pictures:

Smallest beam spot at 0 Degree port

The beam appears to light up a 3 mm diameter circle on the Phosphorus screen.

Smallest beam spot at 90 Degree port

The beam appears to light up a [math]8mm \time \frac (3.5 cm}{7.5cm) = 4 mm[/math] diameter circle on the Phosphorus screen with [math]20 \pm 10 \mu A[/math] of beam current.

Max Transmission

Retune machine to maximize transmission between the FC collar and the FC.