Standard A1900 Targets and Aperture Plates
Targets
The list below gives the thickness options (in mg/cm²) currently available
for beryllium targets used at the A1900 production target position. Each target
is 50 mm wide by 25 mm tall.
| 47 |
352 |
540 |
775 |
1175 |
1645 |
2021 |
| 94 |
376 |
564 |
846 |
1222 |
1692 |
2068 |
| 141 |
399 |
610 |
893 |
1269 |
1763 |
2139 |
| 188 |
423 |
611 |
940 |
1316 |
1810 |
2233 |
| 235 |
446 |
658 |
987 |
1363 |
1857 |
2350 |
| 282 |
470 |
681 |
1034 |
1410 |
1904 |
2609 |
| 305 |
493 |
705 |
1081 |
1480 |
1951 |
2938 |
| 329 |
517 |
752 |
1151 |
1551 |
1998 |
3526 |
Aperture Plates
The aperture plates used at the A1900 target position are 50 mm wide
by 25 mm tall. The circular apertures are centered horizontally and vertically
within the plate so that they coincide with the optical axis. The aperture
plates are 13 mm thick and are available in both copper and heavymet.
The available aperture diameters are 2 mm and 4 mm.
