Positron
Setup:
- trigger: two 1x1x0.2cm finger counters (FF and FB) have been installed and cabled on 18/8; place them in the beam line and adjust the timing with the main trigger coincidence (S0, S2, C1, C2). Include their coincidence in the main trigger coincidence. Move the CU so that beam hits the top tile at an angle and goes in tower 2. Place the fingers with the MMS as close as possible to the top ACD tiles with the MMS target in the centre of the tile
- dump: extend the dump with pb bricks by 16cm
- switch magnet ON and determine current to shoot through MMS target
Take the following data:
part |
energy |
trigger |
events |
note |
|---|---|---|---|---|
e+ |
1 |
S0&S2&C1&C2&FF&FB |
1M |
100k evt runs |
e |
1 |
S0&S2&C1&C2&FF&FB |
1M |
100k evt runs |