Page History

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• Takashi described the HPS-specific applications requiring stepper motor control.
  • Target (new stage)
    • 2 foils and out position. May increase the number of foils to 5.
    • 2 limit switches, low precisions, ~100um, always use reset with limit switch on power loss
    • May need to put a wire on the stick for a harp scan after first chicane
  • Collimator Target(new stage)
    • 2 collimators and out position. May increase to 4.
    • adjustable 50um, need to monitor some rates to find optimal position. Can implement a scan also, 
    • adjustment will need to be redone every time the collimator is retracted.
    • Hovanes wanted to have specs of the stage (uni- and bi-directional reproducibility, accuracy, smallest increment)
  • SVT motion
  • SVT scan

• Krister and Stepan discussed the magnet power supply controls
  • We will need the power supplies for: Moeller quads, Tagger magnet, minitorus, Pair spectrometer.
  • Krister pointed out that a lot of controls cabling, including magnet power supplies have been taken apart.
  • It might be easier to create new controls for some of them rather than to try to recreate what was there before.

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