Run Plan

Run Plan.

Setup.

Set coincidence gate of two paddles to fall within 15-20 ns

Verify that scalars are set: singles from front and back + coincidence.

The zero point is where the laser beam intersects the feedthrough trumpet. I figure at 50 Hz, we can get ample statististics for a 2-min run at each setting. This is to be confirmed by the scalars.

x: along wire and y: vertical distance from sense wire 4.

Run

Plateauing

o Move chamber horizontally to 5cm.

o Move chamber up 2mm

o Set:
   sense: +1375 to +1550V in steps of 25V
   field  -688  to -750V  in steps of 12.5V
   guard  +688  to +750V  in steps of 12.5V

o Once we find the "sweet spot" fix settings of field, guard, and
   sense wires.  move chamber to +1mm, -1mm, and -2mm. Verify signals.

Efficiency tests + charge/evt

o Positions (reckoned in mm) x:  20, 15, 10, 5, 0 ; y:  3, 2, 1, -1, -2, -3.