Luminosity Scans - Low Rate (Target Boiling)
From Hall A Wiki
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.
- Make sure the info (fan speed, temp, ...) for both loops are in the end/start run epics scripts.
- Hydrogen scan. Take HRS runs at 10, 20, 30, 45, 60, 75 and 90 μA.
- Carbon scan. Take HRS runs at 10, 20, 30, 45, 60, 75 and 90 μA.
- Aluminum dummy scan. Take Take HRS runs at 10, 20, 30, 40 μA.