Log entry time 10:11:42 on November 05, 2008

Entry number 246857

This entry is a followup to: 246724

Figure 1: Showing laser level is aligned to beam height. There is a fiducial scratch on the vertical post in center frame. Also cross checked against the RHRS entrance window on the right. NOTE: the _bottom_ of the laser line is at the nominal beam height.

Figure 2: Laser on holey carbon. Hole is 1mm in diam. so it looks like the hole is ~2.5mm high, consistent with the offset between the hole and the BeO BPM positions measured during 1 pass running. It looks like the BeO cross hairs are the best way to determine the correct vertical beam position.

Figure 3: Best effort alignment check when in the Reference cell position. Looks OK. (Note the cell doesn't look nearly as dark when illuminated from behind.)

Figure 4: Reference cell again, zoomed in. Note the red dot reflecting back from the cell end-cap looks pretty centered with the cell axis. That's good.

Figure 5: Best effort alignment check of the Optics target position. Looks OK, possibly a little low?

Figure 6: Optics target again. The foil platform looks like it is nice and parallel with the laser. That's good.

Figure 7: BeO target. You can just see the cross hairs. The alignment with the laser looks dead on.

Fig.1 Laser level is aligned to beam height

Figure 2

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Figure 7