| Efficiency vs. threshold calculations for the neutron energies listed in the proposal. | |||||||
|---|---|---|---|---|---|---|---|
| Energy (MeV) | e(%) @ 1 | e(%) @ 5 | e(%) @ 10 | e(%) @ 15 | e(%) @ 20 | e(%) @ 25 | e(%) @ 40 |
| 267 | 11.3 | 10.2 | 9.4 | 8.6 | 7.8 | 7.1 | 5.0 |
| 533 | 11.4 | 10.2 | 9.2 | 8.3 | 7.3 | 6.4 | 3.9 |
| 799 | 11.3 | 10.0 | 8.9 | 7.7 | 6.6 | 5.6 | 3.4 |
| 1065 | 10.9 | 9.6 | 8.2 | 7.0 | 5.9 | 4.9 | 3.0 |
Note: I used the code written at Kent State University by Madey et al. [NIM 161 (1979) 439-447]. Efficiencies are shown for various thresholds between one and forty MeV (electron equivalent). These calculations are done for a neutron bar measuring 10 cm x 10 cm x 160 cm.
Calculations by Tom Eden.