Difference between revisions of "Positrons Using 40Mev Linac"
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=Detector Calibrations= | =Detector Calibrations= | ||
| + | == Electron and Positron dE/dx for NaI== | ||
| + | |||
| + | |||
| + | {| border="1" |cellpadding="20" cellspacing="0 | ||
| + | |- | ||
| + | |energy|| 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== | ==10/13/13== | ||
[[PositronDetectorCal_4_40MeV]] | [[PositronDetectorCal_4_40MeV]] | ||
| − | |||
=Run configuration= | =Run configuration= | ||
Revision as of 19:55, 17 October 2013
Detector Calibrations
Electron and Positron dE/dx for NaI
| energy | 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
