11. The primary collimator is positioned after the electron beam has reached a vertical orientation. 12. Most collimators have grid patterns for rechecking the zero after the barrel is sighted. 13. I . e . format size, slot collimator position, dose rate etc. 14. A carbon steel collimator assembly is located just outboard of the beam tube window. 15. Collimators can be employed for satellite borne instruments but they are not exactly lenses.16. As the inventor of the floating collimator , Kater rendered a service to practical astronomy. 17. The conventional method is to place a collimator over the detection crystal / PMT array. 18. The treatment head of a linear accelerator consists of both a primary and secondary collimator . 19. An internal collimator is installed in the outboard end of the HB-4 tube. 20. As standard, the gun is sold with US made C-More Systems'collimator .
