Where, oh, where should the Tevatron collimators go?

or

Determining if the collimators did not move to a good position during Halo Removal

How can one check if the collimators end up in a "good" position after scraping?

• Use the C23 compare done at the end of the "Remove Halo" sequencer aggregate.  Collimators far away from nominal positions should be flagged as out of tolerance.

• Compare the collimator LVDT positions to the following history plots:  proton   pbar

• Look at the "Current Position" (CP) device readings available using the SDA Viewer application with the  views "MCR/tev_prot_coll.xml"  and "MCR/tev_pbar_coll.xml".  With SDA Viewer, you can see the collimator positions over several stores at once.