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 \times \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.

Device	setting
RS1	0+
RS2	0-
FS1	0+
FS2	0-
0Q1	-2.62
0Q2	+4.04
45Q1	-1.88
45Q2	+1.74
L90Q1	-0
L90Q2	+2.87
Bend1	3.5
Bend2	0.86
Gun HV	3 kV
Grid	0.43
802	16 kV

Max Transmission

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

Using FrameGrabber

Device	setting
RS1	0+
RS2	0-
FS1	0+
FS2	0-
0Q1	-0.20
0Q2	+2.86
45Q1	-0.004
45Q2	+2.24
L90Q1	-1.33
L90Q2	+2.42
Bend1	3.5
Bend2	0.86
Gun HV	13 kV
Grid	2.31
802	16 kV	-	SOL1	0.39	-	SOL2	0.40