Luminosity Scans - Low Rate (Target Boiling)

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Ebeam [GeV] P0 [GeV/c] θe [deg] Collimator Target Fast Raster
X x Y
Beam Current
7.3 3.056 25 6 mSr Carbon Optics 1 mm x 1 mm variable

Perform luminosity scans with targets and beam currents listed below. For the Dummy target, we might have to stay below 40 μA. These combined with a low rate scan should allow us to determine if there is any rate dependent systematic. A 90 μA, the hydrogen electron rates should be ~ 1.4 kHz.

  1. Make sure the info (fan speed, temp, ...) for both loops are in the end/start run epics scripts.
  2. Hydrogen scan. Take HRS runs at 10, 20, 30, 45, 60, 75 and 90 μA.
  3. Carbon scan. Take HRS runs at 10, 20, 30, 45, 60, 75 and 90 μA.
  4. Aluminum dummy scan. Take Take HRS runs at 10, 20, 30, 40 μA.