Positrons Using 40Mev Linac
Detector Calibrations
Electron and Positron dE/dx for NaI
| Energy (MeV) | dE/dx for e- (MeV/cm) | dE/dx for e+ (MeV/cm) |
| 8 | 4.54 +/- 1.05 | 4.40 +/- 1.03 |
| 5 | 4.36 +/- 1.11 | 4.22 +/- 1.08 |
| 3 | 4.12 +/- 1.19 | 4.03 +/- 1.16 |
10/13/13
Run configuration
- calibrate the NaI detector by sending 5->10 MeV electrons from the 44 machine directly into the NaI detector while the electron current is just above dark current. Use the magnet to deflect the electrons away from the crystal to measure the photon background.
MSC from Air -vs- He
Kinematics
The energy and angular correlation distribution of electrons exiting a 2mm thick Tungsten Target for 1 million 42 MeV incident beam. (Zoomed in to the less than 12 MeV range)
Run list
10/14/13
12/09/13
12/10/13